EP0956165B1 - Method and multipurpose equipment for maintaining metastable liquids - Google Patents
Method and multipurpose equipment for maintaining metastable liquids Download PDFInfo
- Publication number
- EP0956165B1 EP0956165B1 EP98956968A EP98956968A EP0956165B1 EP 0956165 B1 EP0956165 B1 EP 0956165B1 EP 98956968 A EP98956968 A EP 98956968A EP 98956968 A EP98956968 A EP 98956968A EP 0956165 B1 EP0956165 B1 EP 0956165B1
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- EP
- European Patent Office
- Prior art keywords
- suction
- injection
- pipe
- tank
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
- B08B9/0933—Removing sludge or the like from tank bottoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
- B01F25/212—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers the injectors being movable, e.g. rotating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
- B01F25/212—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers the injectors being movable, e.g. rotating
- B01F25/2122—Rotating during jetting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/65—Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/65—Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column
- B01F31/651—Mixing by successively aspirating a part of the mixture in a conduit, e.g. a piston, and reinjecting it through the same conduit into the receptacle
Definitions
- the present invention relates to a method and an apparatus with functions multiple for the maintenance of metastable liquids, the action of these processes and equipment can be curative (removal of sediment layers already formed), or preventive (prevent the formation of such layers).
- Metal denotes a characteristic property of certain liquid phases whose physico-chemical stability is subject to modifications. Example: segregation or sedimentation due to gravity and / or temperature.
- Metastable liquids stored and their deposits show special physico-chemical characteristics, with segregation effects difficult to avoid.
- the present invention proposes to remedy the problems of segregation or homogeneity posed, during their storage in tanks, by certain liquid phases comprising elements of weight or nature different molecular.
- Atmospheric releases caused by the extraction operations of these sediments, executed under forced ventilation (for the protection of men used for manual or semi-manual tasks in unsanitary or even dangerous) are, for the most part, invisible, but they are nevertheless considerable volumes on a global scale which are thus issued without control or treatment, which have only recently been evaluated and taken into account.
- An object of the invention is to provide industry with a means relatively simple in its application and ultimately less expensive for all the views that an unnecessary squandering of raw materials becoming economically valuable, while preserving human health and their natural heritage.
- Hydrodynamic processes currently used for treatment curative of certain deposits (these are "corrective" procedures) presenting the following disadvantages: they work on deposits already formed and more or less stabilized. They require stopping or significantly slowing down the exploitation of capacities or tanks, transfers, the use of equipment often heavy, to which must be added assembly and disassembly operations pipes, conduits, cables, resulting in a relatively long delay at a cost Student.
- the tubes suction and injection are introduced vertically into the metastable product at treat.
- the autonomous module according to the invention is remarkable in that it includes at least one module comprising two concentric tubes, i.e. a first tube of larger section (outer tube) comprising in its portion lower, at least one and, preferably, a plurality of suction ports and the upper portion of which is connected to the suction port of a pump, and a second duct (inner duct) whose upper portion is connected to the discharge port of said pump and the lower end of which is connected injection nozzles, preferably rotary.
- a first tube of larger section comprising in its portion lower, at least one and, preferably, a plurality of suction ports and the upper portion of which is connected to the suction port of a pump
- a second duct inner duct
- each module is equipped with means allowing its vertical positioning in a tank or tank containing the metastable product to be treated.
- the suction light (s) which is fitted with the suction tube is or are placed above and at a distance from the lower end of the module including the lower end of the injection tube.
- the method and the apparatus according to the invention respond to the different above objectives.
- the invention proposes to meet these objectives by the use of autonomous modules whose particularity is to realize in a single device, the functions of suction of the liquid contained in the tank and its discharge under pressure therein, within which flows will be directed and distributed throughout the volume contained in the tank, these flow rates being adapted to goals to be achieved depending on the nature of the operation: resuspension, fluxing, liquefaction - pumpability, homogenization, washing, decontamination.
- the "multifunctional" nature of the apparatus claimed provides attack power in one device essential for dispersion in the contained volume of the most sediment compact and / or the most agglutinative; and a successive mixing essential complement, of the same volume, for its homogenization, if that is the aim sought.
- the module according to the invention has multiple functions since it allows, in providing prior to assembly, the specific adaptations to the operation, distribute flows suitable either for specific corrective operations or for preventive implementation. This is a considerable advantage, as well for the service responsible for the works, inside an industrial installation, that for an entrepreneur mandated by the industrialist.
- Each module is autonomous in the sense that it can be mounted directly on the available opening (s), in the roof or the side wall of the tanks, by means of a base or a cover adapted to the dimensions thereof.
- the number of modules and their dimensions are a function of both the liquid and the deposit to be treated and the geometry of the tank itself. No other mounting is necessary, only the hydraulic supply piping and its connection to hydraulic power packs or power stations located either on the ground, outside the tanks, or any other location chosen according to the site, then being necessary.
- the suction of the liquid product contained in the tank, its pressurization and the injection of this flow within the volume contained in the reservoir are carried out at from one and the same set, which can be placed directly on the (or them) existing port (s) of the tank in question.
- the apparatus according to the invention comprises at least one module M suction-injection and, preferably, a plurality of autonomous M modules including the number and dimensions are, for example, a function of both the liquid and the deposit to be treated and the capacity and geometry of the tank containing these liquid and deposit, as previously indicated.
- Each module comprises two tubes 1 and 2, arranged coaxially.
- reservoir used in the following description also designates a container of variable dimensions and capacities (for example up to 130,000 tonnes or more) covered by a fixed or floating roof, only basins open air of different types (lagoons, lakes, etc.).
- the outer tube 1 or suction tube has a passage or conduit 3 larger annular section than the circular section of the duct 4 defined by the inner tube or discharge tube 2.
- the suction tube 1 has, in its lower portion, at least one and, preferably, a plurality of distributed lights or openings 5 distributed, of preferably regularly, in its side wall. These openings can be advantageously provided with a strainer (not shown) opposing the entry of sediments detached by the impact of pressurized flows, which wander inside the volume of the liquid product contained in the tank, before being stirred and rendered homogeneous.
- the suction port (s) 5 with which the suction tube 1 is provided is or are placed above and at a distance from the lower end of the module M, which includes the lower end of the delivery tube or injection tube 2.
- the assembly constituted by the two aforementioned tubes is intended to be positioned vertically in the tank containing the product to be treated, so that a more or less important part of its length is immersed in said product.
- the length of the suction tube 1 is sufficient to ensure a regular and constant suction by its section or its opening plunging into the liquid contained in the tank and / or through lights made at height of the chosen liquid phase.
- the length of the delivery tube 2 depends on the nature of the operation to be carried out, said tube being either interchangeable in its sections lower, either telescopic or extendable.
- the length of the delivery tube will be determined by the level of the sedimentary layer to be treated already formed, its nature and its consistency, in order to penetrate and disintegrate this sedimentary phase.
- the suction tube 1 can be consisting of several sections 1a, 1b, ..., assembled by means of threaded connections 1 n. The same goes for the delivery tube 2 and for the shaft 9.
- the upper end of the outer tube 1 is connected to the orifice suction 01 of a pump 6 whose casing or body can be rigidly attached at the upper part of the assembly consisting of tubes 1 and 2, said pump can be placed axially or laterally with respect to said assembly.
- a filter 20 is placed in front of the suction port 01 of the pump 6.
- the upper end of the inner tube is connected to the orifice discharge 02 of pump 6.
- This pump thus ensures suction, pressurization (for example under a pressure of the order of 5 to 25 bars) and the injection of a flow which will be brought into permanent circulation throughout the duration of the operation, until the goals fixed: liquefaction, fluxing and / or homogeneous resuspension of sediment elements, have been reached.
- the pump 6 is driven by hydraulic energy, the generator and hydraulic power supply being installed on the ground or on any other location chosen according to the industrial site, outside the reservoir containing the product to be treated.
- the power of this hydraulic energy is function of the number of modules used for the considered treatment and it is adapted to the volume and nature of the liquid or sediment to be treated.
- any other type of energy chosen by the operator for operational reasons local, could be used for the operation of pump 6.
- the lower end of the discharge tube is connected to nozzles of hydro-dynamic injection 7, preferably rotary.
- the rotary drive of these rotating nozzles can be provided at by means of a hydraulic motor or turbine 8. Any other energy can however be substituted for hydraulic power, at the option of the operator, without this in no way modifies the principle and the procedure for applying the invention.
- the motor 8 drives a shaft 9 housed in the discharge tube 2, which it crosses from one end to the other.
- the shaft 9 opens into a rotating casing 10 to which it is rigidly connected, this casing 10 being, for example, arranged in the extension of the lower end of the suction tube to which it is advantageously connected by means of a fitting turning 11.
- the rotary nozzles 7 are arranged laterally on the casing 10, so that the rotational drive of the latter causes a circular movement said nozzles around the vertical axis of the module (arrow F1).
- Nozzle rotation 7 around the longitudinal axis of the module is carried out at slow speed (for example 0.5 to 10 rpm), depending on the nature of the product treated and the phase operational), the motor or turbine 8 being connected to the shaft 9 by through a reducer (not shown).
- the lower end of the discharge tube 2 is provided with a fixed bevel gear 12 engaged with a bevel gear 13 integral in rotation with a adjustable satellite pinion 14 itself meshing with a pinion 15.
- This pinion 15 is wedged on the end of a small conduit 16 oriented perpendicular to the axis of the injection tube 2.
- This conduit 16 is mounted rotating in a bearing 17 which is provided, laterally, the casing 10 and the nozzles 7 are mounted on the distal end of this conduit which is outside said casing.
- the nozzles 7 are also rotatably mounted in planes parallel to the injection tube (arrow F2), at a speed which is also a function of the nature of the product treated and the operational phase in progress, for example at a speed between 0.5 and 10 t / min.
- the nozzles 7 are mounted at the lower end of the module, with an ability to rotate in two perpendicular planes.
- the number and flow of nozzles 7 and the level at which they are located placed in the tank, are determined according to the nature, volume and the viscosity of the product to be treated, as well as the technical lessons obtained by samples and analyzes indicating prior to the implementation of the process and system, the areas planned for the intervention.
- the nozzles are advantageously mounted on the nozzle threads disposed at the outlet of the conduit 16, these threads being able to receive nozzles of section, geometry and orientation determined. If the number of nozzles available is not fully used, unused nozzles may be closed by means of threaded plugs.
- the positioning structures of the modules with a view to their implementation works can be very different depending on the configuration of the tanks containing the products to be treated.
- the upper part of the external element (tube 1) of the module can be arranged to allow the position of the latter to be adjusted in the axial direction, that is, therefore, adjusting the position, in height, of the lights (5) and the rotary nozzle holder 10.
- the vertical external element 1 of the module can be provided, laterally, in its upper part, with a rack 19 called to cooperate with a locking device (not shown) fitted the entry of the passage P formed in the roof T of the tank for the engagement of said module.
- the module can have a length adjustable; in this case, its longitudinal components (suction tube 1, tube injection 2, shaft 9) may consist of sections assembled with the means adequate screw connections.
- the module according to the invention can also be used in a horizontal position. In this case, it is engaged horizontally in one of the manholes provided at the base of the side wall of the tanks.
- the duration of treatment operations is determined by surveys and analyzes carried out at specified intervals (or continuously), indicating the evolution of treatment.
- the implementation during preventive interventions preferably includes the permanent installation of the modules on the tanks provided. Modules are then protected by a rigid cover, sheltering them from the elements, installation and removal requiring no special handling.
- one of them may be only the first phase of an intervention plan, intended first of all to eliminate and / or recover the sediments already formed, then, in a second phase, using the same system, after having possibly adjusted it to the specific needs of a preventive intervention: level and number of nozzles, their section and geometry, number of modules, flow rates, pressures, etc., in particular for large tanks hydrocarbons.
- the flow put into circulation by the module represents the main parameter, more important than the pressure under which it is dispersed in the volume in which the formation of sedimentation must be warned, these factors are almost reversed when it comes to a corrective intervention, on a formed, adherent and compact deposit.
- the only hydrodynamic energy organized by the nozzles with the discharge tubes is sufficient to disturb and keep the volume in the tank moving.
- this hydrodynamic energy remains the "engine” of the system but, in addition to the flows injected by the nozzles into the volume contained in the tank, the delivery tube can, and sometimes, must be provided, to its lower part, more aggressive elements in the form of arms 21 (FIG. 3) mounted with tilting ability in vertical planes, these arms extending the radius of action of these submerged jets increasing both their radius of action and the impact caused by the extension of the submerged turbulence.
- Arms 21, the free end of which is provided with an injection nozzle, are mounted with a ability to rotate about the axis of the delivery tube 2 at the lower end to which they are connected.
- the injection tube in its lower part, will dislocate the sediment by the means of his arms 21; then (in its middle and upper part) will brew it by through the nozzles. Its rotational movement will ensure movement of the entire volume contained in the tank.
- a rinsing liquid is chosen depending on the nature of the deposit from which the tank is to be removed.
- the suction port will be opened at the lowest level so as to save the amount of rinse aid.
- the internal surfaces are then washed in accordance with operation described in the preceding titles.
- the liquid is pumped out of the tank to be either recovered, treated or disposed of by any method adapted to its nature (treatment plant, neutralization, centrifugation, filtering, etc.).
- Such washing can be renewed, if necessary, and the rinse aid modified according to the results observed until obtaining the desired cleanliness and the elimination of any dangerous, harmful or explosive indoor atmosphere.
- the washing method Being liquid whose gaseous fumes can be explosive or toxic, the washing method will be forced to brewing submerged, ie a level of liquid appreciably higher than the rotary jets.
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Abstract
Description
La présente invention concerne un procédé et un appareillage à fonctions multiples pour la maintenance des liquides métastables, l'action de ces procédé et appareillage pouvant être curative (élimination des couches de sédiments déjà formées), ou préventive (empêcher la formation de telles couches).The present invention relates to a method and an apparatus with functions multiple for the maintenance of metastable liquids, the action of these processes and equipment can be curative (removal of sediment layers already formed), or preventive (prevent the formation of such layers).
On désigne par "métastable" une propriété caractéristique de certaines phases liquides dont la stabilité physico-chimique est sujette à des modifications. Exemple : la ségrégation ou la sédimentation dues à la pesanteur et/ou à la température."Metastable" denotes a characteristic property of certain liquid phases whose physico-chemical stability is subject to modifications. Example: segregation or sedimentation due to gravity and / or temperature.
Les liquides métastables stockés et leurs dépôts présentent des caractéristiques physico-chimiques particulières, aux effets de ségrégation difficilement évitables.Metastable liquids stored and their deposits show special physico-chemical characteristics, with segregation effects difficult to avoid.
On sait que les plus lourds des éléments qu'ils contiennent, se déposent peu à peu, au cours de leur exploitation, en s'accumulant sur le fond et parfois sur les parois des réservoirs.We know that the heaviest of the elements they contain, settle little by little, during their exploitation, accumulating on the bottom and sometimes on the walls of the tanks.
Ce phénomène physico-chimique et ses conséquences sur la bonne marche des exploitations industrielles, est toujours actuellement la cause de coûts, de pertes, directes ou induites, et parfois aussi, de nuisances matérielles humaines et écologiques.This physico-chemical phenomenon and its consequences on the good market for industrial operations, is still currently the cause of costs, losses, direct or induced, and sometimes also, of human material nuisance and ecological.
Ces sédimentations dépendent de divers facteurs en ce qui concerne leur abondance ou leur composition. On citera par exemple :
- La nature même du produit stocké et, plus particulièrement, les différences de poids moléculaire de ses divers composants.
- Les conditions climatiques et les variations de températures.
- La fréquence des mouvements de remplissage et de vidange dans le réservoir considéré au cours de sa période de service.
- The very nature of the product stored and, more particularly, the differences in molecular weight of its various components.
- Climatic conditions and temperature variations.
- The frequency of filling and emptying movements in the tank in question during its period of service.
Les indications susmentionnées n'étant aucunement limitatives.The above indications are in no way limiting.
Une fois le processus de sédimentation engagé, sous forme, à son début, d'un simple épaississement des couches inférieures du liquide stocké, il va s'accentuant avec le temps ; le sédiment qui se forme devient de plus en plus compact, incluant dans certains cas des liaisons moléculaires formant des strates. Il gêne l'exploitation du réservoir et de son contenu, il diminue la capacité disponible.Once the sedimentation process has started, in form, at its beginning, by simply thickening the lower layers of the stored liquid, it will increasing over time; the sediment that forms becomes more and more compact, in some cases including molecular bonds forming strata. he interferes with the operation of the reservoir and its contents, it reduces the available capacity.
- Stockage en réservoirs de produits chimiques composés, d'hydrocarbures, de dérivés pétrochimiques et des matières premières liquides.Storage in tanks of compound chemicals, hydrocarbons, petrochemical derivatives and liquid raw materials.
- Stockage en bassins ou lagunes de rejets industriels en attente de traitement.Storage in industrial waste tanks or lagoons pending treatment.
On pense également à des opérations particulières en raison des dimensions ou du milieu : opérations curatives devenues indispensables en raison de l'accumulation sous peine d'arrêt d'exploitation, concernant par exemple les grands réservoirs, équipant les plates-formes de forage et d'extraction offshore, on pense également aux stockages souterrains et aux stockages à bords de pétroliers désaffectés, on pense aux innombrables lagunes contenant des rejets pratiqués en attente de solutions techniques, écologiques et économiques.We also think of particular operations because of the dimensions or environment: curative operations which have become essential due to accumulation under penalty of cessation of operation, for example concerning large tanks, fitted to offshore drilling and extraction platforms, we also think of underground storage and storage on board tankers disused, we think of the countless lagoons containing discharges practiced in waiting for technical, ecological and economical solutions.
La présente invention se propose de porter remèdes aux problèmes de ségrégation ou d'homogénéité posés, lors de leurs stockage en réservoirs, par certaines phases liquides comportant des éléments de poids ou de natures moléculaires différents.The present invention proposes to remedy the problems of segregation or homogeneity posed, during their storage in tanks, by certain liquid phases comprising elements of weight or nature different molecular.
Ces dépôts présentent des consistances allant de celle d'une boue molle à celle d'une masse compacte évoluant, à terme, vers leur solidification.These deposits have consistencies ranging from that of soft mud to that of a compact mass evolving, eventually, towards their solidification.
Ces dépôts ont été considérés au cours des décennies écoulées comme les retombées, fâcheuses, mais plus ou moins inévitables des processus industriels à leur origine. These deposits have been considered over the past decades as the repercussions, annoying, but more or less inevitable of industrial processes at their origin.
Leur nocivité pour l'environnement, pour la santé publique et, surtout, pour celle des hommes employés à leur extraction n'a été que récemment évaluée et prise en considération.Their harmfulness for the environment, for public health and, above all, for that of the men employed in their extraction was only recently evaluated and taken into account.
Leur devenir n'a en général été prévu que récemment, et pose toujours problème. Il était bien souvent plus simple et surtout moins onéreux de rejeter, d'abandonner voire d'enfouir ces résidus gênants une fois extraits, plutôt que de les soumettre à des traitements inévitablement coûteux.Their future has generally only been planned recently, and still poses problem. It was often simpler and above all less expensive to reject, to abandon or even bury these annoying residues once extracted, rather than to subject to inevitably expensive treatments.
Leur réutilisation ou revalorisation éventuelle a été longtemps considérée comme secondaire du fait, d'une part, du moindre coût des matières premières les ayant générées, d'autre part, par un manque de prise de conscience écologique en raison des impératifs économiques d'une industrie soumise à des résultats financiers. Cette dernière, est actuellement bien consciente de l'importance de la préservation du cadre de vie, une motivation à laquelle s'ajoutent les coûts accrus des traitements de déchets et matières premières, mettant fin à l'illusion d'économies se révélant, à terme, fallacieuses.Their reuse or possible revaluation has long been considered as secondary due, on the one hand, to the lower cost of raw materials having generated, on the other hand, by a lack of ecological awareness in because of the economic imperatives of an industry subject to results Financial. The latter is currently well aware of the importance of preservation of the living environment, a motivation to which are added the increased costs waste and raw material treatments, ending the illusion savings that ultimately prove to be fallacious.
Des rejets atmosphériques provoqués par les opérations d'extraction de ces sédiments, exécutées sous ventilation forcée (pour la protection des hommes utilisés à des tâches manuelles ou semi manuelles en milieu insalubre voire même dangereux) sont, certes, pour la plupart invisibles, mais ce sont cependant des volumes considérables à l'échelle du globe qui sont ainsi émis sans contrôle ni traitement, lesquels n'ont été évalués et pris en compte que récemment.Atmospheric releases caused by the extraction operations of these sediments, executed under forced ventilation (for the protection of men used for manual or semi-manual tasks in unsanitary or even dangerous) are, for the most part, invisible, but they are nevertheless considerable volumes on a global scale which are thus issued without control or treatment, which have only recently been evaluated and taken into account.
La plupart de ces extractions de dépôts sédimentés sont encore, à travers le monde, effectuées manuellement. Elles sont aussi insalubres et parfois dangereuses pour les hommes au travail, que pour l'environnement.Most of these sediment deposition extractions are still, through the world, done manually. They are also unsanitary and sometimes dangerous for men at work, than for the environment.
Un but de l'invention est de mettre à la disposition de l'industrie, un moyen relativement simple dans son application et en fin de compte, moins coûteux à tous les points de vue qu'une dilapidation inutile de matières premières devenant économiquement précieuses, tout en préservant la santé de l'homme et leur héritage naturel.An object of the invention is to provide industry with a means relatively simple in its application and ultimately less expensive for all the views that an unnecessary squandering of raw materials becoming economically valuable, while preserving human health and their natural heritage.
D'autre part, l'invention se propose d'utiliser un appareillage multifonctions présentant les caractéristiques de fonctionnement suivantes :
- Pouvoir être employé sous les divers types proposés aussi bien pour une action curative sur des couches de sédiments déjà formées, que pour une mise en oeuvre préventive, supprimant à la fois la cause et ses effets, le même appareillage pouvant en outre, être utilisé pour assurer la décontamination finale des capacités traitées.
- Pouvoir être, soit monté de manière rapide et quasi autonome, pour des interventions ponctuelles, soit installé à demeure et mis en action aux intervalles et fréquences définis par l'exploitant.
- Eviter des modifications sur le réservoir existant ou sur ses tuyauteries..
- Autoriser la poursuite de l'exploitation du réservoir durant les opérations préventives ou l'emploi correctif, sans interruption significative de service.
- Utiliser une énergie propre au système, ou disponible sur site ; et qui soit d'une mise en place et d'une mise en oeuvre rapides.
- Pouvoir être utilisé dans des liquides de natures différentes tout en satisfaisant aux obligations de sécurité pour les produits soumis à des réglementations particulières en raison de leurs caractéristiques, de leur corrosivité, de leurs émanations ou de leur toxicité.
- Assurer des conditions de sécurité optimales dans les réservoirs contenant des produits ou des gaz inflammables.
- Assurer une protection maximale de l'environnement, excluant tout rejet atmosphérique ou terrestre causé par sa mise en oeuvre.
- Dispenser la main d'oeuvre de tout contact avec le sédiment et le liquide duquel il provient ou avec ses émanations.
- Permettre (si la nature du produit et la composition du sédiment le rendent possible ou souhaitable) une réutilisation des composants utilisables du sédiment, rendus homogènes, propres à une revalorisation.
- Eviter à l'exploitant, en cas d'utilisation préventive de l'invention, des opérations de maintenance curative coûteuses.
- Etre, en cas d'emploi préventif, d'un coût opérationnel modéré, comparable à ceux courants dans les installations industrielles.
- Etre modulable en ce qui concerne leurs fonctions de base : débits, pression, rotation, etc.
- To be able to be used under the various types proposed as well for a curative action on layers of sediments already formed, as for a preventive implementation, suppressing both the cause and its effects, the same apparatus being able moreover, to be used for ensure the final decontamination of the treated capacities.
- Can be either mounted quickly and almost autonomously for occasional interventions, or permanently installed and activated at the intervals and frequencies defined by the operator.
- Avoid modifications to the existing tank or its piping.
- Authorize the continued operation of the tank during preventive operations or corrective use, without significant interruption of service.
- Use energy specific to the system, or available on site; and which is quick to set up and implement.
- Can be used in liquids of different natures while meeting the safety requirements for products subject to specific regulations due to their characteristics, their corrosivity, their fumes or their toxicity.
- Ensure optimum safety conditions in tanks containing flammable products or gases.
- Ensure maximum environmental protection, excluding any atmospheric or terrestrial release caused by its implementation.
- Exempt the labor force from any contact with the sediment and the liquid from which it comes or with its emanations.
- Allow (if the nature of the product and the composition of the sediment make it possible or desirable) a reuse of the usable components of the sediment, made homogeneous, suitable for upgrading.
- Avoid costly curative maintenance operations for the operator, in the event of preventive use of the invention.
- Be, in the case of preventive use, of a moderate operational cost, comparable to those common in industrial installations.
- Be flexible with regard to their basic functions: flow rates, pressure, rotation, etc.
Certains dépôts, du fait de leur caractère inerte et de la technique utilisée, ainsi que de leur consistance, font depuis longtemps l'objet de traitements bien connus (injection de liquide sous pression, d'air comprimé, brassage, etc.) pour faciliter leur extraction. Ils n'entrent pas dans le cadre prévu pour les applications de l'invention.Certain deposits, due to their inert nature and the technique used, as well as their consistency, have long been treated well known (injection of pressurized liquid, compressed air, stirring, etc.) for facilitate their extraction. They do not fall within the framework provided for the applications of the invention.
Afin de remédier aux inconvénients causés par le stockage de phases liquides ayant provoqué des dépôts physico-chimiquement non inertes, l'exploitant fait procéder, en fonction de ses propres besoins ou des obligations techniques contractuelles et règlementaires, à l'extraction de ces dépôts dont la consistance limite en général les pompages ou transferts efficaces.To overcome the inconvenience caused by phase storage liquids having caused physico-chemically non-inert deposits, the operator commission, according to their own needs or technical obligations contractual and regulatory, to the extraction of these deposits whose consistency generally limits efficient pumping or transfer.
Divers moyens ou procédures sont employés ou proposés pour cette extraction, ils sont, en général, spécifiques au produit stocké et aux dépôts qu'il a formés, qui peuvent, dans certains cas, être réutilisables ou revalorisables.Various means or procedures are used or proposed for this extraction, they are, in general, specific to the stored product and the deposits it has trained, which can, in some cases, be reusable or upgradeable.
Ces moyens sont le plus souvent manuels ou semi-manuels. Certains dépôts rendent le travail des hommes pénible, insalubre ou dangereux, ces méthodes n'assurant pas toujours aux sédiments extraits un devenir protégeant l'environnement et peuvent exiger des traitements complémentaires coûteux (extériorisation, transport, incinération, centrifugation...).These means are most often manual or semi-manual. Some deposits make men's work arduous, unhealthy or dangerous, these methods that do not always ensure that the extracted sediments become protective the environment and may require expensive additional treatments (externalization, transport, incineration, centrifugation ...).
Des procédés hydrodynamiques actuellement utilisés pour le traitement curatif de certains dépôts (ce sont des procédures "correctives") présentant les inconvénients suivants : ils interviennent sur les dépôts déjà formés et plus ou moins stabilisés. Ils nécessitent l'arrêt ou un important ralentissement de l'exploitation des capacités ou réservoirs, des transferts, l'emploi d'un matériel souvent lourd, auxquels il faut ajouter des opérations de montage et de démontage de tuyauteries, canalisations, câbles, entraínant un délai relativement long d'un coût élevé. Hydrodynamic processes currently used for treatment curative of certain deposits (these are "corrective" procedures) presenting the following disadvantages: they work on deposits already formed and more or less stabilized. They require stopping or significantly slowing down the exploitation of capacities or tanks, transfers, the use of equipment often heavy, to which must be added assembly and disassembly operations pipes, conduits, cables, resulting in a relatively long delay at a cost Student.
Ces coûts élevés et ces pertes de temps limitent l'emploi de telles procédures à des opérations correctives devenues indispensables. De telles méthodes ne sauraient en raison des coûts et de la complication de leur mise en oeuvre constituer une solution permettant, non plus de porter remède aux inconvénients de sédimentations existantes, mais d'en prévenir la formation, seule solution permettant d'éliminer les gênes et les pertes causées par ce phénomène.These high costs and wasted time limit the use of such corrective operations procedures which have become essential. Such methods could not because of the costs and the complication of their implementation work constitute a solution allowing, either to remedy the disadvantages of existing sedimentation, but to prevent its formation, only solution to eliminate discomfort and losses caused by this phenomenon.
Les procédures actuelles et leurs équipements sont "rigides" dans leur utilisation. Il n'est pas question de les voir utilisés pour atteindre le meilleur but valable en la matière : la prévention de la formation de ces dépôts sédimentés, tant pour des motifs d'exploitation que pour des raisons économiques.Current procedures and their equipment are "rigid" in their use. There is no question of seeing them used to achieve the best goal valid in this area: the prevention of the formation of these sedimented deposits, both for operational reasons than for economic reasons.
Dans le document US 4.426.233, sont par exemple décrits un procédé et une installation d'évacuation des boues d'un réservoir de stockage de pétrole, suivant lesquels du pétrole en phase liquide est prélevé à la base du réservoir, par l'intermédiaire de conduites horizontales connectées aux orifices de prélèvement de produit agencés dans la paroi latérale dudit réservoir, et ensuite réinjecté sous pression au moyen d'une machine de pompage et de dispositifs de projection de liquide suspendus au toit du réservoir, de sorte à désintégrer et à dissoudre la couche de boue. In the document US 4,426,233, for example, a method and a sludge evacuation installation from an oil storage tank, according to which liquid phase oil is taken from the base of the reservoir, by through horizontal pipes connected to the sampling ports of product arranged in the side wall of said tank, and then reinjected under pressure by means of a pumping machine and projection devices liquid suspended from the roof of the tank, so as to disintegrate and dissolve the layer of mud.
Le procédé de l'invention est notamment remarquable en ce que :
- on introduit verticalement dans le produit métastable contenu dans un réservoir un tube d'aspiration et un tube d'injection logé, de préférence concentriquement, dans ledit tube d'aspiration ;
- on aspire le produit métastable à un niveau déterminé du volume de la phase liquide dudit produit, au moyen du tube d'aspiration raccordé à l'aspiration d'une pompe et ;
- on réinjecte immédiatement sous pression le produit liquide aspiré, au sein dudit volume de produit contenu dans ledit réservoir, au moyen de cette pompe et de buses d'injection raccordées au refoulement de cette dernière par l'intermédiaire dudit tube d'injection.
- a suction tube and an injection tube housed, preferably concentrically, in said suction tube are introduced vertically into the metastable product contained in a reservoir;
- the metastable product is aspirated at a determined level of the volume of the liquid phase of said product, by means of the suction tube connected to the suction of a pump and;
- the sucked liquid product is immediately reintroduced under pressure into said volume of product contained in said reservoir, by means of this pump and injection nozzles connected to the discharge of the latter via said injection tube.
Selon une autre disposition caractéristique de ce procédé, les tubes d'aspiration et d'injection sont introduits verticalement dans le produit métastable à traiter.According to another characteristic arrangement of this process, the tubes suction and injection are introduced vertically into the metastable product at treat.
Le module autonome selon l'invention est remarquable en ce qu'il comprend au moins un module comprenant deux tubes concentriques, soit un premier tube de section plus importante (tube extérieur) comportant dans sa portion inférieure, au moins une et, de préférence, une pluralité de lumières d'aspiration et dont la portion supérieure est raccordée à l'orifice d'aspiration d'une pompe, et, un deuxième conduit (conduit intérieur) dont la portion supérieure est raccordée à l'orifice de refoulement de ladite pompe et dont l'extrémité inférieure est raccordée à des buses d'injection, de préférence rotatives. The autonomous module according to the invention is remarkable in that it includes at least one module comprising two concentric tubes, i.e. a first tube of larger section (outer tube) comprising in its portion lower, at least one and, preferably, a plurality of suction ports and the upper portion of which is connected to the suction port of a pump, and a second duct (inner duct) whose upper portion is connected to the discharge port of said pump and the lower end of which is connected injection nozzles, preferably rotary.
Selon une autre disposition caractéristique de cet appareillage, chaque module est équipé de moyens permettant son positionnement vertical dans un bac ou réservoir contenant le produit métastable à traiter.According to another characteristic arrangement of this apparatus, each module is equipped with means allowing its vertical positioning in a tank or tank containing the metastable product to be treated.
Selon une autre disposition caractéristique, la ou les lumière(s) d'aspiration dont est pourvu le tube d'aspiration, est ou sont placée(s) au-dessus et à distance de l'extrémité inférieure du module incluant l'extrémité inférieure du tube d'injection.According to another characteristic arrangement, the suction light (s) which is fitted with the suction tube, is or are placed above and at a distance from the lower end of the module including the lower end of the injection tube.
Le procédé et l'appareillage selon l'invention répondent aux différents objectifs susmentionnés.The method and the apparatus according to the invention respond to the different above objectives.
D'autre part, l'invention propose de satisfaire à ces objectifs par l'emploi de modules autonomes dont la particularité est de réaliser en un seul appareil, les fonctions d'aspiration du liquide contenu dans le réservoir et de son refoulement sous pression dans celui-ci, à l'intérieur duquel des flux seront orientés et distribués dans l'ensemble du volume contenu dans le réservoir, ces débits étant adaptés aux buts à atteindre en fonction de la nature de l'opération : remise en suspension, fluxage,liquéfaction - pompabilité, homogénéisation, lavage, décontamination.On the other hand, the invention proposes to meet these objectives by the use of autonomous modules whose particularity is to realize in a single device, the functions of suction of the liquid contained in the tank and its discharge under pressure therein, within which flows will be directed and distributed throughout the volume contained in the tank, these flow rates being adapted to goals to be achieved depending on the nature of the operation: resuspension, fluxing, liquefaction - pumpability, homogenization, washing, decontamination.
En outre, le caractère "à fonctions multiples" de l'appareillage revendiqué permet de disposer en un même appareil, aussi bien d'une puissance d'attaque indispensable à la dispersion dans le volume contenu des sédimentations les plus compactes et/ou les plus agglutinantes ; et d'un brassage successif complémentaire indispensable, de ce même volume, en vue de son homogénéisation, si tel est le but recherché.Furthermore, the "multifunctional" nature of the apparatus claimed provides attack power in one device essential for dispersion in the contained volume of the most sediment compact and / or the most agglutinative; and a successive mixing essential complement, of the same volume, for its homogenization, if that is the aim sought.
Le module selon l'invention est à fonctions multiples puisqu'il permet, en y prévoyant avant son montage, les adaptations spécifiques à l'opération, de distribuer des flux convenant, soit aux opérations spécifiques correctives, soit à la mise en oeuvre préventive. Ceci constitue un avantage considérable, aussi bien pour le service chargé des travaux, à l'intérieur d'une installation industrielle, que pour un entrepreneur mandaté par l'industriel.The module according to the invention has multiple functions since it allows, in providing prior to assembly, the specific adaptations to the operation, distribute flows suitable either for specific corrective operations or for preventive implementation. This is a considerable advantage, as well for the service responsible for the works, inside an industrial installation, that for an entrepreneur mandated by the industrialist.
L'énergie nécessaire aux fonctions des modules : aspiration, mise sous pression, refoulement, rotations, peut être assurée soit par un groupe hydraulique, soit par un groupe pneumatique, soit électriquement. Sans exclure ces dernières possibilités, on décrira ci-après l'ensemble d'un équipement mû par pression hydraulique selon un exemple de mise en oeuvre préféré. On évitera ainsi les problèmes et contraintes normalisées liées à l'emploi de l'électricité dans certaines installations ou certains liquides sensibles ainsi que ceux éventuellement causés par l'emploi d'air comprimé.The energy necessary for the functions of the modules: suction, placing under pressure, discharge, rotations, can be ensured either by a hydraulic group, either by a pneumatic group, or electrically. Without excluding the latter possibilities, a set of pressure-driven equipment will be described below hydraulics according to an example of preferred implementation. This will avoid standardized problems and constraints related to the use of electricity in some installations or certain sensitive liquids as well as those possibly caused by the use of compressed air.
Chaque module est autonome en ce sens qu'il peut être monté directement sur le (ou les) orifice(s) disponible(s), dans le toit ou la paroi latérale des réservoirs, par l'intermédiaire d'un socle ou d'un couvercle adapté aux dimensions de ceux-ci. Le nombre des modules et leurs dimensions sont fonction à la fois du liquide et du dépôt à traiter et de la géométrie du réservoir lui-même. Aucun autre montage n'est nécessaire, seule la tuyauterie d'alimentation hydraulique et son raccordement aux groupes ou centrales hydrauliques situées, soit au sol, hors des réservoirs, soit à tout autre emplacement choisi en fonction du site, étant ensuite nécessaire.Each module is autonomous in the sense that it can be mounted directly on the available opening (s), in the roof or the side wall of the tanks, by means of a base or a cover adapted to the dimensions thereof. The number of modules and their dimensions are a function of both the liquid and the deposit to be treated and the geometry of the tank itself. No other mounting is necessary, only the hydraulic supply piping and its connection to hydraulic power packs or power stations located either on the ground, outside the tanks, or any other location chosen according to the site, then being necessary.
Les buts, caractéristiques et avantages ci-dessus, et d'autre encore,
ressortiront mieux de la description qui suit et des dessins annexés dans lesquels :
On se réfère aux dessins annexés pour décrire des exemples intéressants, bien que nullement limitatifs, de mises en oeuvre du procédé et de réalisations de l'appareillage à fonctions multiples pour la maintenance de liquides métastables, selon l'invention.Reference is made to the accompanying drawings to describe interesting examples, although in no way limitative, of implementations of the method and of realizations of multifunction equipment for the maintenance of metastable liquids, according to the invention.
Ainsi qu'il a été indiqué ci-dessus, selon le procédé de l'invention, l'aspiration du produit liquide contenu dans le réservoir, sa mise sous pression et l'injection de ce flux au sein du volume contenu dans le réservoir, sont réalisées à partir d'un seul et même ensemble, qui peut être placé directement sur le (ou les) orifice(s) existants du réservoir considéré.As indicated above, according to the method of the invention, the suction of the liquid product contained in the tank, its pressurization and the injection of this flow within the volume contained in the reservoir, are carried out at from one and the same set, which can be placed directly on the (or them) existing port (s) of the tank in question.
L'appareillage selon l'invention comprend au moins un module M d'aspiration-injection et, de préférence, une pluralité de modules M autonomes dont le nombre et les dimensions sont, par exemple, fonction à la fois du liquide et du dépôt à traiter et de la capacité et de la géométrie du réservoir contenant ces liquide et dépôt, comme indiqué précédemment.The apparatus according to the invention comprises at least one module M suction-injection and, preferably, a plurality of autonomous M modules including the number and dimensions are, for example, a function of both the liquid and the deposit to be treated and the capacity and geometry of the tank containing these liquid and deposit, as previously indicated.
Chaque module comprend deux tubes 1 et 2, disposés coaxialement.Each module comprises two
Compte tenu du fait que ces tubes sont le plus souvent et de manière particulièrement avantageuse, appelés à être utilisés verticalement, on utilisera conventionnellement ci-après les mots "inférieure" et "supérieure" pour distinguer leurs extrémités ou portions extrêmes opposées.Given the fact that these tubes are most often and so particularly advantageous, called to be used vertically, we will use conventionally below the words "lower" and "upper" to distinguish their opposite ends or end portions.
De même, on souligne que le mot "réservoir" utilisé dans l'exposé qui suit désigne aussi bien un bac de dimensions et capacités variables (par exemple jusqu'à 130 000 tonnes ou plus) couvert par un toit fixe ou flottant, que des bassins à ciel ouvert de différents types (lagunes, lacs, etc.).Similarly, it is pointed out that the word "reservoir" used in the following description also designates a container of variable dimensions and capacities (for example up to 130,000 tonnes or more) covered by a fixed or floating roof, only basins open air of different types (lagoons, lakes, etc.).
Le tube extérieur 1 ou tube d'aspiration, présente un passage ou conduit 3
de section annulaire plus importante que la section circulaire du conduit 4 défini par
le tube intérieur ou tube de refoulement 2. The
Le tube d'aspiration 1 comporte, dans sa portion inférieure, au moins une
et, de préférence, une pluralité de lumières ou ouvertures étagées 5 réparties, de
préférence régulièrement, dans sa paroi latérale. Ces ouvertures peuvent être
avantageusement munies d'une crépine (non représentée) s'opposant à l'entrée de
sédiments détachés par l'impact des flux sous pression, et qui errent à l'intérieur du
volume du produit liquide contenu dans le réservoir, avant d'être brassés et rendus
homogènes.The
La ou les lumières d'aspiration 5 dont est pourvu le tube d'aspiration 1 est
ou sont placée(s) au-dessus et à distance de l'extrémité inférieure du module M,
laquelle inclut l'extrémité inférieure du tube de refoulement ou tube d'injection 2.The suction port (s) 5 with which the
L'ensemble constitué par les deux tubes susmentionnés est destiné à être positionné verticalement dans le réservoir contenant le produit à traiter, de façon qu'une partie plus ou moins importante de sa longueur se trouve plongée dans ledit produit.The assembly constituted by the two aforementioned tubes is intended to be positioned vertically in the tank containing the product to be treated, so that a more or less important part of its length is immersed in said product.
La longueur du tube d'aspiration 1 est suffisante pour assurer une
aspiration régulière et constante par sa section ou son orifice plongeant dans le
liquide contenu dans le réservoir et/ou au travers de lumières pratiquées à hauteur
de la phase liquide choisie.The length of the
La longueur du tube de refoulement 2 est fonction de la nature de
l'opération à réaliser, ledit tube pouvant être soit interchangeable dans ses tronçons
inférieurs, soit télescopique, soit rallongeable. Par exemple, dans le cas d'une
opération corrective, la longueur du tube de refoulement sera déterminée par le
niveau de la couche sédimentaire à traiter déjà constituée, de sa nature et de sa
consistance, afin de pénétrer et désagréger cette phase sédimentaire.The length of the
Comme le montre, par exemple, la figure 3, le tube d'aspiration 1, peut être
constitué de plusieurs tronçons 1a, 1b, ..., assemblés au moyen de raccords filetés
1 n. Il en va de même pour le tube de refoulement 2 et pour l'arbre 9.As shown, for example, in Figure 3, the
L'extrémité supérieure du tube extérieur 1 est raccordée à l'orifice
d'aspiration 01 d'une pompe 6 dont le carter ou corps peut être rigidement rattaché
à la partie supérieure de l'ensemble constitué par les tubes 1 et 2, ladite pompe
pouvant être placée axialement ou latéralement par rapport audit ensemble. Un
filtre 20 est placé devant l'orifice d'aspiration 01 de la pompe 6.The upper end of the
D'autre part, l'extrémité supérieure du tube intérieur est raccordée à l'orifice
de refoulement 02 de la pompe 6.On the other hand, the upper end of the inner tube is connected to the
La pompe 6 sera choisie en fonction de :
- sa construction, compatible avec les produits à traiter ;
- son bon pouvoir d'aspiration ; elle sera autoamorçante ;
- son couple débit/pression performant.
- its construction, compatible with the products to be treated;
- its good suction power; it will be self-priming;
- its efficient flow / pressure couple.
Cette pompe assure ainsi l'aspiration, la mise sous pression (par exemple sous une pression de l'ordre de 5 à 25 bars) et l'injection d'un flux qui va être mis en circulation permanente durant toute la durée de l'opération, jusqu'à ce que les buts fixés : la liquéfaction, le fluxage et/ou la remise en suspension homogène des éléments sédiments, aient été atteints.This pump thus ensures suction, pressurization (for example under a pressure of the order of 5 to 25 bars) and the injection of a flow which will be brought into permanent circulation throughout the duration of the operation, until the goals fixed: liquefaction, fluxing and / or homogeneous resuspension of sediment elements, have been reached.
Suivant l'exemple illustré, la pompe 6 est mue par l'énergie hydraulique, le
générateur et l'alimentation de l'énergie hydraulique étant installés au sol ou sur
tout autre emplacement choisi en fonction du site industriel, hors du réservoir
renfermant le produit à traiter. La puissance de cette énergie hydraulique est
fonction du nombre de modules utilisés pour le traitement considéré et elle est
adaptée au volume et à la nature du liquide ou du sédiment à traiter. Bien entendu,
tout autre type d'énergie choisie par l'opérateur pour des raisons d'exploitation
locale, pourrait être utilisé pour le fonctionnement de la pompe 6.According to the example illustrated, the
L'extrémité inférieure du tube de refoulement est raccordée à des buses
d'injection hydro-dynamiques 7, de préférence rotatives.The lower end of the discharge tube is connected to nozzles
of hydro-
L'entraínement en rotation de ces buses tournantes peut être assuré au
moyen d'un moteur ou turbine hydraulique 8. Toute autre énergie peut cependant
être substituée à l'énergie hydraulique, au gré de l'opérateur, sans que cela ne
modifie en rien le principe et la procédure d'application de l'invention.The rotary drive of these rotating nozzles can be provided at
by means of a hydraulic motor or
Selon le mode d'exécution représenté (figure 1), le moteur 8 entraíne un
arbre 9 logé dans le tube de refoulement 2, qu'il traverse d'une extrémité à l'autre.
L'arbre 9 débouche dans un carter tournant 10 auquel il est relié rigidement, ce
carter 10 étant, par exemple, disposé dans le prolongement de l'extrémité inférieure
du tube d'aspiration à laquelle il est avantageusement relié au moyen d'un raccord
tournant 11.According to the embodiment shown (Figure 1), the
Les buses rotatives 7 sont disposées latéralement sur le carter 10, de sorte
que l'entraínement en rotation de ce dernier entraíne un mouvement circulaire
desdites buses autour de l'axe vertical du module (flèche F1). La rotation des buses
7 autour de l'axe longitudinal du module s'effectue à vitesse lente (par exemple de
l'ordre de 0,5 à 10 t/mn), en fonction de la nature du produit traité et de la phase
opérationnelle en cours), le moteur ou turbine 8 étant relié à l'arbre 9 par
l'intermédiaire d'un réducteur (non représenté).The
D'autre part, l'extrémité inférieure du tube de refoulement 2 est munie d'un
pignon conique fixe 12 en prise avec un pignon conique 13 solidaire en rotation d'un
pignon satellite réglable 14 lui-même engrenant avec un pignon 15. Ce pignon 15
est calé sur l'extrémité d'un petit conduit 16 orienté perpendiculairement à l'axe du
tube d'injection 2. Ce conduit 16 est monté tournant dans un palier 17 dont est
muni, latéralement, le carter 10 et les buses 7 sont montées sur l'extrémité distale
de ce conduit qui se trouve hors dudit carter. De la sorte, les buses 7 sont
également montées tournantes dans des plans parallèles au tube d'injection (flèche
F2), à une vitesse qui est également fonction de la nature du produit traité et de la
phase opérationnelle en cours, par exemple à une vitesse comprise entre 0,5 et 10
t/mn. Autrement dit, selon le mode d'exécution décrit ci-dessus, les buses 7 sont
montées à l'extrémité inférieure du module, avec une aptitude de rotation dans deux
plans perpendiculaires.On the other hand, the lower end of the
Le nombre et le débit des buses 7 ainsi que le niveau où elles se trouvent
placées dans le réservoir, sont déterminés en fonction de la nature, du volume et de
la viscosité du produit à traiter, ainsi que des enseignements techniques obtenus
par des prélèvements et analyses indiquant préalablement à la mise en oeuvre du
procédé et du système, les zones prévues pour l'intervention.The number and flow of
La longueur minimale du rayon d'action des jets hydrodynamiques jaillissant des buses doit obéir aux règles suivantes :
- toutes les zones à traiter doivent être fluxées par l'impact du jet ; aucune zone ne doit demeurer exclue du brassage ;
- en conséquence, en fonction du rayon d'impact hydronynamique obtenu, on multipliera le nombre de modules à mettre en oeuvre pour des réservoirs de grandes dimensions et/ou des fortes viscosités des produits à traiter, de manière à obtenir un recouvrement des rayons d'actions entre eux.
- all the areas to be treated must be fluxed by the impact of the jet; no zone must remain excluded from mixing;
- consequently, as a function of the hydronynamic impact radius obtained, the number of modules to be implemented will be multiplied for large tanks and / or high viscosities of the products to be treated, so as to obtain an overlap of the radii of actions between them.
Les buses sont avantageusement montées sur les filetages d'ajutages
disposés à la sortie du conduit 16, ces filetages pouvant recevoir des buses de
section, de géométrie et d'orientation déterminées. Si le nombre d'ajutages
disponibles n'est pas totalement utilisé, les ajutages non utilisés peuvent être
obturés au moyen de bouchons filetés.The nozzles are advantageously mounted on the nozzle threads
disposed at the outlet of the
Toutes les caractéristiques fondamentales du module : débit, pression, rotation, ..., sont modulables et ajustables en fonction des observations, études et analyses effectuées préalablement à l'opération de traitement et, si nécessaire, au cours de celle-ci.All the basic characteristics of the module: flow, pressure, rotation, ..., are modular and adjustable according to observations, studies and analyzes carried out prior to the treatment operation and, if necessary, course of it.
Les structures de positionnement des modules en vue de leur mise en oeuvre peuvent être très différentes en fonction de la configuration des réservoirs contenant les produits à traiter.The positioning structures of the modules with a view to their implementation works can be very different depending on the configuration of the tanks containing the products to be treated.
Par exemple :
- pour le traitement des produits contenus dans des réservoirs R' à toit fixe
T2, le ou les modules M (figure 5) peuvent traverser des ouvertures généralement
ménagées d'origine dans ledit toit et être soutenus par ce dernier ; dans ce cas, la
longueur des modules est adaptée à la hauteur des réservoirs; ils peuvent
éventuellement reposer sur le fond des réservoirs, de façon à assurer leur rigidité,
en prenant appui soit sur des embases tournantes, soit sur des petits socles fixes
18 (figure 2) équipés de roulements étanches permettant la rotation du porte-
buses rotatif 10 ; - pour le traitement de produits contenus dans des réservoirs R à toit
flottant T1, les modules M (figure 4), peuvent être montés de façon similaire, en
prenant appui dans le fond desdits réservoirs ; dans ce cas, les cotes et
spécifications du
tube 2 et, surtout,du tube extérieur 1, sont déterminées de façon à assurer la même tenue aux contraintes que les béquilles équipant les toits flottants d'origine ; ces tubes sont donc capables de supporter ces toits flottants, lorsque le réservoir a été vidé de son contenu ; - pour le traitement des produits contenus dans des bassins B à ciel ouvert (installations de lagunage), les modules M (figure 6) peuvent être installés fixement sur des passerelles ou sur des chariots se déplaçant sur ces dernières.
- for the treatment of the products contained in reservoirs R 'with fixed roof T2, the module or modules M (FIG. 5) can pass through openings generally provided in the original in said roof and be supported by the latter; in this case, the length of the modules is adapted to the height of the tanks; they can possibly rest on the bottom of the tanks, so as to ensure their rigidity, by resting either on rotating bases, or on small fixed bases 18 (FIG. 2) equipped with sealed bearings allowing the rotation of the
rotary nozzle holder 10 ; - for the treatment of products contained in tanks R with a floating roof T1, the modules M (FIG. 4), can be mounted in a similar way, by resting on the bottom of said tanks; in this case, the dimensions and specifications of the
tube 2 and, above all, of theouter tube 1, are determined so as to ensure the same resistance to stresses as the crutches equipping the original floating roofs; these tubes are therefore capable of supporting these floating roofs, when the tank has been emptied of its contents; - for the treatment of the products contained in open ponds B (lagoon installations), the modules M (figure 6) can be fixedly installed on walkways or on trolleys moving on these.
La partie supérieure de l'élément extérieur (tube 1) du module peut être
agencée pour permettre le réglage de la position de celui-ci en direction axiale,
c'est-à-dire, par conséquent, le réglage de la position, en hauteur, des lumières
d'aspiration (5) et du porte-buses rotatif 10. Par exemple, l'élément extérieur vertical
1 du module peut être muni, latéralement, dans sa partie haute, d'une crémaillère
19 appelée à coopérer avec un dispositif de verrouillage (non représenté) équipant
l'entrée du passage P ménagé dans le toit T du réservoir pour l'engagement dudit
module.The upper part of the external element (tube 1) of the module can be
arranged to allow the position of the latter to be adjusted in the axial direction,
that is, therefore, adjusting the position, in height, of the lights
(5) and the
Comme indiqué précédemment, le module peut avoir une longueur
réglable ; dans ce cas, ses composants longitudinaux (tube d'aspiration 1, tube
d'injection 2, arbre 9) peuvent être constitués de tronçons assemblés aux moyens
de raccords vissés adéquats.As indicated previously, the module can have a length
adjustable; in this case, its longitudinal components (
Le module selon l'invention peut aussi s'utiliser en position horizontale. Dans ce cas, il est engagé horizontalement dans l'un des trous d'homme ménagés à la base de la paroi latérale des réservoirs.The module according to the invention can also be used in a horizontal position. In this case, it is engaged horizontally in one of the manholes provided at the base of the side wall of the tanks.
Bien évidemment, tous les accessoires, pièces, etc... sont conformes aux normes et aux obligations techniques et de sécurité s'appliquant à la nature du contenu du réservoir et du site dans lequel l'opération est prévue.Obviously, all accessories, parts, etc ... comply with standards and technical and safety requirements applying to the nature of the contents of the reservoir and the site where the operation is planned.
- Primo, sécurité intrinsèque, les risques d'électricité statique sont rendus impossibles ; par l'équipotentialité du système mis à la "terre".First, intrinsic safety, the risks of static electricity are returned impossible; by the equipotentiality of the "earthed" system.
- Secundo, le fait que les fluxages n'aient lieu que de manière immergée, exclut toute autre création d'électricité statique.Secondly, the fact that fluxes take place only immersed, excludes any other creation of static electricity.
La répartition régulière des flux en circulation, leur dispersion, leur orientation sont assurées, en cas d'opération préventive, par la poussée des jets hydrodynamiques submergés à l'intérieur du volume contenu dans le réservoir.The regular distribution of flows in circulation, their dispersion, their orientation is ensured, in case of preventive operation, by the thrust of the jets hydrodynamics submerged inside the volume contained in the tank.
La durée des opérations de traitement est déterminée par les sondages et les analyses effectuées à intervalles déterminés (ou en permanence), indiquant l'évolution du traitement.The duration of treatment operations is determined by surveys and analyzes carried out at specified intervals (or continuously), indicating the evolution of treatment.
Il en est de même pour la fréquence des interventions, qui ne peut être déterminée que par les observations de l'exploitant du réservoir. A la limite extrême, dans certains cas, on peut prévoir une mise en oeuvre, permanente ou séquentielle, de l'intervention, effectuée par tout ou partie des modules suivant les résultats constatés.It is the same for the frequency of interventions, which cannot be determined only by observations of the tank operator. At the extreme limit, in some cases, provision may be made for permanent or sequential, intervention, carried out by all or part of the modules according to the results observed.
La mise en oeuvre, lors d'interventions préventives inclut de préférence la mise en place permanente des modules sur les réservoirs prévus. Les modules sont alors protégés par une couverture rigide les mettant à l'abri des intempéries, d'une pose et d'une dépose ne nécessitant aucune manutention particulière.The implementation, during preventive interventions preferably includes the permanent installation of the modules on the tanks provided. Modules are then protected by a rigid cover, sheltering them from the elements, installation and removal requiring no special handling.
Leur mise en action ne nécessitera que le raccordement aux groupes hydrauliques des flexibles d'alimentation et de distribution, les manifolds de distribution demeurant eux aussi à poste fixe. Si l'ensemble est installé à demeure, sa commande peut être programmée, informatisée et effectuée à distance à partir d'un poste centralisateur.Putting them into action will only require connection to the groups hydraulic supply and distribution hoses, manifolds distribution also staying at fixed stations. If the unit is permanently installed, his order can be programmed, computerized and carried out remotely from a centralizing station.
S'il s'agit d'opérations correctives, l'une de celles-ci peut n'être que la première phase d'un plan d'intervention, destinée tout d'abord à éliminer et/ou récupérer les sédiments déjà formés, puis, dans une deuxième phase, en utilisant le même système, après l'avoir éventuellement réglé aux besoins spécifiques d'une intervention préventive : niveau et nombre des buses, leur section et leur géométrie, nombre de modules, débits, pressions, etc...., en particulier pour les grands bacs d'hydrocarbures.In the case of corrective operations, one of them may be only the first phase of an intervention plan, intended first of all to eliminate and / or recover the sediments already formed, then, in a second phase, using the same system, after having possibly adjusted it to the specific needs of a preventive intervention: level and number of nozzles, their section and geometry, number of modules, flow rates, pressures, etc., in particular for large tanks hydrocarbons.
On a précédemment insisté sur le caractère multifonctions de l'invention. Il en est deux, fondamentales qui, dans le cas d'une opération curative sont à la fois différentes et, sauf exception, indissociables : We have previously insisted on the multifunctional nature of the invention. he there are two fundamental ones which, in the case of a curative operation are both different and, without exception, inseparable:
La dislocation au sens propre du terme du sédiment est en effet un préalable indispensable dès que les dépôts présentent un caractère compact ; un résultat que de simples turbulences de brassage ne sauraient accomplir efficacement.Dislocation in the literal sense of the term sediment is indeed a prerequisite as soon as the deposits have a compact character; a result that simple stirring turbulence cannot accomplish effectively.
Le brassage, tout aussi indispensable, dès que les dépôts ont été délogés, détachés du fond ou des parois du réservoir auxquels ils adhèrent fréquemment.Brewing, just as essential, as soon as the deposits have been dislodged, detached from the bottom or walls of the tank to which they frequently adhere.
Ces fonctions complémentaires vont être satisfaites par l'adaptabilité du module :These additional functions will be satisfied by the adaptability of the module:
Si, dans le cas de l'action préventive, le débit mis en circulation par le module représente le paramètre principal, plus important que la pression sous laquelle il est dispersé dans le volume dans lequel la formation de la sédimentation doit être prévenue, ces facteurs sont quasiment inversés lorsqu'il s'agit d'une intervention corrective, sur un dépôt formé, adhérent et compact.If, in the case of preventive action, the flow put into circulation by the module represents the main parameter, more important than the pressure under which it is dispersed in the volume in which the formation of sedimentation must be warned, these factors are almost reversed when it comes to a corrective intervention, on a formed, adherent and compact deposit.
Dans le premier cas, la seule énergie hydrodynamique organisée par les buses dont sont munis les tubes de refoulement est suffisante pour perturber et maintenir en mouvement le volume contenu dans le réservoir.In the first case, the only hydrodynamic energy organized by the nozzles with the discharge tubes is sufficient to disturb and keep the volume in the tank moving.
Lors d'une intervention curative, cette énergie hydrodynamique demeure le
"moteur" du système mais, outre les flux injectés par les buses dans le volume
contenu dans le réservoir, le tube de refoulement peut, et parfois, doit être muni, à
sa partie inférieure, d'éléments plus agressifs sous formes de bras 21 (figure 3)
montés avec une aptitude de basculement dans des plans verticaux, ces bras
prolongeant le rayon d'action de ces jets submergés accroissant à la fois leur rayon
d'action et l'impact provoqué par l'extension des turbulences submergées. Les bras
21 dont l'extrémité libre est munie d'une buse d'injection, sont montés avec une
aptitude de rotation autour de l'axe du tube de refoulement 2 à l'extrémité inférieure
duquel ils sont raccordés.During a curative intervention, this hydrodynamic energy remains the
"engine" of the system but, in addition to the flows injected by the nozzles into the volume
contained in the tank, the delivery tube can, and sometimes, must be provided, to
its lower part, more aggressive elements in the form of arms 21 (FIG. 3)
mounted with tilting ability in vertical planes, these arms
extending the radius of action of these submerged jets increasing both their radius
of action and the impact caused by the extension of the submerged turbulence.
Lorsque cela est rendu possible par la nature du liquide contenu dans le
réservoir et par celle des sédiments, par les dimensions du réservoir, on tentera de
réunir les deux fonctions de dislocation et de brassage, dans le même module.
Ainsi, le tube d'injection, dans sa partie basse, disloquera le sédiment par le moyen
de ses bras 21 ; puis (dans sa partie moyenne et haute) le brassera par
l'intermédiaire des buses. Son mouvement de rotation assurera une mise en
mouvement de l'ensemble du volume contenu dans le réservoir.When this is made possible by the nature of the liquid contained in the
reservoir and that of sediment, by the dimensions of the reservoir, we will try to
combine the two functions of dislocation and mixing, in the same module.
Thus, the injection tube, in its lower part, will dislocate the sediment by the means
of his
Le procédé suivant l'invention ne serait pas complet s'il ne restituait à leur exploitant, des réservoirs dont l'état des surfaces intérieures (fond, parois, structures) autorisent, suivant ses besoins et à son choix :
- la pénétration de la main d'oeuvre et du personnel d'inspection dans une atmosphère dépourvue de nocivité, respirable sans masque ou appareil de protection ;
- les travaux de maintenance nécessaires, y compris les travaux de réparations à la flamme.
- mise en classe du réservoir, s'il est destiné à recevoir par la suite, d'autres produits.
- penetration of labor and inspection personnel into an atmosphere devoid of harmfulness, breathable without mask or protective device;
- required maintenance work, including flame repair work.
- classification of the tank, if it is intended to receive subsequently, other products.
Lorsque le traitement nécessite un rinçage, un liquide de rinçage est choisi en fonction de la nature du dépôt dont le réservoir doit être débarrassé. Dans ce cas, l'orifice d'aspiration sera ouvert au niveau le plus bas de manière à économiser la quantité de liquide de rinçage.When the treatment requires rinsing, a rinsing liquid is chosen depending on the nature of the deposit from which the tank is to be removed. In this case, the suction port will be opened at the lowest level so as to save the amount of rinse aid.
Le lavage des surfaces internes est alors mis en oeuvre conformément au fonctionnement décrit aux titres précédents. Après brassage et contrôles, le liquide de lavage est pompé hors du réservoir pour être, soit récupéré, soit traité ou éliminé par toute méthode adaptée à sa nature (station d'épuration, neutralisation, centrifugation, filtrage, etc...).The internal surfaces are then washed in accordance with operation described in the preceding titles. After mixing and checks, the liquid is pumped out of the tank to be either recovered, treated or disposed of by any method adapted to its nature (treatment plant, neutralization, centrifugation, filtering, etc.).
Un tel lavage peut être renouvelé, si nécessaire, et le liquide de rinçage modifié en fonction des résultats constatés jusqu'à obtention de la propreté désirée et de l'élimination de toute atmosphère intérieure dangereuse, nocive ou explosive.Such washing can be renewed, if necessary, and the rinse aid modified according to the results observed until obtaining the desired cleanliness and the elimination of any dangerous, harmful or explosive indoor atmosphere.
S'agissant de liquide dont les émanations gazeuses peuvent être explosives ou toxiques, la méthode de lavage sera contrainte à des brassages immergés, soit un niveau de liquide sensiblement supérieur aux jets rotatifs.Being liquid whose gaseous fumes can be explosive or toxic, the washing method will be forced to brewing submerged, ie a level of liquid appreciably higher than the rotary jets.
S'agissant de produits ne présentant pas ces risques, on peut procéder par projections directes des jets rotatifs sur les parois internes du réservoir. In the case of products not presenting these risks, we can proceed by direct projections of rotary jets on the internal walls of the tank.
Choix du liquide: il sera fonction des objectifs de résultats (performances techniques, économiques et écologiques) mais il devra toujours être conforme aux règlement et consignes de sécurité.Choice of liquid: it will depend on the results objectives (performance technical, economic and ecological) but it must always comply with regulations and safety instructions.
Nonobstant la possibilité de procéder à des finitions manuelles (la pénétration des hommes étant devenue possible grâce aux phases précédentes), on pourra multiplier les phases de lavage et les produits utilisés, jusqu'à obtention du degré de propreté requis.Notwithstanding the possibility of manual finishing (the penetration of men having become possible thanks to the previous phases), we can multiply the washing phases and the products used, until obtaining the level of cleanliness required.
Ce sont donc les mêmes modules et leur mode de fonctionnement spécifique, qui assurent l'extraction du sédiment rendu pompable, puis les nettoyages, sans nécessiter d'installation ou de montages supplémentaires.So these are the same modules and how they work specific, which extract the rendered pumpable sediment, then cleaning, without requiring additional installation or assemblies.
Claims (19)
- Method for maintenance of metastable liquids contained in tanks, both for curative action on layers of sediments which have already formed, and for preventative implementation, eliminating both the cause and its effects, characterised in that:there are introduced vertically into the metastable product contained in a tank, a suction pipe (1) and an injection pipe (2) accommodated preferably concentrically in the said suction pipe (1);the metastable product is sucked up to a predetermined level of the volume of the liquid phase of the said product, by means of the suction pipe (1) which is connected to the suction aperture (01) of a pump (6); andthe liquid product sucked up is immediately reinjected under pressure into the said volume of product contained in the said tank, by means of this same pump and injection nozzles (7) which are connected to the delivery aperture (02) of the latter by means of the said injection pipe (2).
- Method according to claim 1, characterised in that the injection nozzles (7) are driven by movement of rotation (F1) around the axis of the concentric suction (1) and injection (2) pipes.
- Method according to claim 1 or claim 2, characterised in that the injection nozzles (7) are driven by movement of rotation (F2) on a plane which is parallel to the axis of the concentric suction (1) and injection (2) pipes.
- Method according to claim 2, characterised in that the injection nozzles (7) are fitted at the end of arms (21) which can be pivoted on vertical planes.
- Method according to any one of claims 2 to 4, characterised in that the injection nozzles (7) are driven by movement of rotation (F2) on planes which are parallel to the axis of the concentric suction (1) and injection (2) pipes.
- Autonomous module with multiple functions for maintenance of metastable liquids, both for curative action on layers of sediments already formed, and for preventative implementation, eliminating both the cause and its effects, characterised in that this module (M) comprises:a pump (6); andtwo concentric pipes, i.e. a first, outer pipe (1) comprising in its lower portion at least one suction opening (5) and the upper portion of which is connected to the suction aperture (01) of the said pump (6), and a second pipe (2), the upper portion of which is connected to the delivery aperture (02) of the said pump, and the lower end of which is connected to injection nozzles (7) which can generate hydrodynamic jets.
- Autonomous module according to claim 6, characterised in that the said module (M) is equipped with means which allow it to be positioned vertically or substantially vertically in a container or tank which contains the metastable product to be processed, through one of the openings (P) provided in the roof (T) of the said container or tank.
- Autonomous module according to claim 6 or claim 7, characterised in that the suction opening(s) (5) with which the suction pipe (1) is provided is or are placed above and spaced from the lower end of the module (M) which includes the lower end of the delivery pipe or injection pipe (2).
- Autonomous module according to claim 6, characterised in that a filter (20) is placed in front of the suction aperture (01) of the pump (6).
- Autonomous module according to claim 6, characterised in that the injection nozzles (7) are fitted such that they can rotate on a plane which is perpendicular to the axis of the concentric pipes (1,2), and are connected to a motor (8) which assures their rotation.
- Autonomous module according to claim 6 or claim 10, characterised in that the injection nozzles (7) are fitted such that they can rotate on a plane parallel to the axis of the concentric pipes (1,2), and are connected to a motor (8) which assures their rotation.
- Autonomous module according to claim 6 or claim 10, characterised in that the injection nozzles (7) are fitted at the free end of arms (21) which pivot on vertical planes.
- Autonomous module according to any one of claims 6 to 12, characterised in that the outer suction pipe (1) comprises in its lower portion a plurality of stepped openings (7) which are provided in its lateral wall.
- Autonomous module according to claim 6 or claim 13, characterised in that the suction opening (7) or the set of suction openings (7) is or are provided with a strainer.
- Autonomous module according to any one of claims 6 to 14, characterised in that its lower end is equipped with a base (18) for support on the ground, which is disposed below the rotary nozzle-holder (10) and is connected to the latter by means of a bearing.
- Autonomous module according to any one of claims 10, 11 or 12, characterised in that the rotary nozzles (7) are connected to the motor (8) by means of a reduction gear.
- Autonomous module according to any one of claims 6 to 16, characterised in that its length is adjustable, the outer pipe (1), the inner pipe (2) and the shaft (9) consisting for example of sections (1a, 1b, etc) which are assembled by means of screwed connections (1n).
- Device according to any one of claims 6 to 14 with multiple functions for maintenance of metastable liquids comprising at least one module (M), designed to be positioned vertically or substantially vertically in an opening (P) provided in the roof (T) of the tanks, or in any other support, characterised in that the upper portion of the outer element (1) of the module (M) and the intake of the said opening are arranged in a complementary manner, such as to permit adjustment of the position of the said module in the axial direction.
- Device according to claim 18 with multiple functions for maintenance of metastable liquids, characterised in that the vertical outer element (1) of the module (M) or of each module (M) is provided laterally with a rack (19), which is required to co-operate with a locking device which equips the intake of the passage (P) or of each passage (P) provided in the roof (T,T1,T2) of the tank.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9715252 | 1997-11-28 | ||
FR9715252A FR2771654B1 (en) | 1997-11-28 | 1997-11-28 | MULTI-FUNCTION METHOD AND APPARATUS FOR THE MAINTENANCE OF METASTABLE LIQUIDS |
PCT/FR1998/002549 WO1999028058A1 (en) | 1997-11-28 | 1998-11-27 | Method and multipurpose equipment for maintaining metastable liquids |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0956165A1 EP0956165A1 (en) | 1999-11-17 |
EP0956165B1 true EP0956165B1 (en) | 2004-03-03 |
Family
ID=9514125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98956968A Expired - Lifetime EP0956165B1 (en) | 1997-11-28 | 1998-11-27 | Method and multipurpose equipment for maintaining metastable liquids |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0956165B1 (en) |
AT (1) | ATE260717T1 (en) |
DE (1) | DE69822131T2 (en) |
ES (1) | ES2217602T3 (en) |
FR (1) | FR2771654B1 (en) |
OA (1) | OA11080A (en) |
PT (1) | PT956165E (en) |
WO (1) | WO1999028058A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108714608A (en) * | 2018-06-05 | 2018-10-30 | 马鞍山市三川机械制造有限公司 | A kind of cylindrical shape auto parts and components cleaning device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU1958399A (en) * | 1998-01-22 | 1999-08-09 | Lindenport S.A. | Fluidising lances and their arrangement |
FR2809974B1 (en) * | 2000-05-26 | 2003-12-05 | Bernard Fernand Paringaux | HIGH POWER MULTIFUNCTIONAL INDUSTRIAL APPARATUS AND PREVENTIVE OR CURATIVE DEVICES FOR THE ONLINE PROCESSING OF DEPOSITS AND SEDIMENTATIONS OF ANY ACCUMULATED NATURE IN RESERVOIRS OR BASINS |
FR2819435B1 (en) * | 2001-01-12 | 2004-07-02 | Petrojet Internat | DEVICE FOR CLEANING A FLUID PRODUCT TANK, ESPECIALLY OIL OR OIL PRODUCTS |
DE50205361D1 (en) * | 2001-07-19 | 2006-01-26 | Lindenport S A | METHOD AND DEVICE FOR PRODUCING TURBULENCE AND THEIR DISTRIBUTION |
US11123698B2 (en) * | 2017-06-21 | 2021-09-21 | Alfa Laval Corporate Ab | Fluid handling apparatus and fluid tank system |
WO2020088733A1 (en) * | 2018-10-29 | 2020-05-07 | Scanjet Marine Ab | Method and system for cleaning a surface of a receptacle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE520442C (en) * | 1931-03-11 | Explosionssicherer Gefaesse Sa | Sump water pump for introduction into the sounding pipe of a storage container | |
FR672837A (en) * | 1928-10-15 | 1930-01-07 | Liquid Measurements Ltd | Improvements in means for cleaning liquid storage tanks and the like |
US4426233A (en) * | 1981-09-11 | 1984-01-17 | Taiho Industries Co. Ltd. | Method for disposal of sludge in floating roof type oil tank |
GB2145344B (en) * | 1983-08-24 | 1987-12-02 | Butterworth System Inc | Agitating settled sludge in a storage tank |
DE3584789D1 (en) * | 1984-03-13 | 1992-01-16 | Fiprosa Holding | METHOD FOR RECOVERY OF RAW OIL OR REFINERY PRODUCTS FROM MUDDY THICKEN TO COMPACT, SEDIMENTED RAW OIL OR REFINE PRODUCTS, AND APPARATUS FOR CARRYING OUT THE METHOD. |
US4772401A (en) * | 1986-08-21 | 1988-09-20 | Rawlins P J Thomas | Method of reducing contaminants in a fuel tank |
US4828625A (en) * | 1987-03-09 | 1989-05-09 | Nalco Chemical Company | Apparatus and method for removal of sludge from tanks |
FR2638107B1 (en) * | 1988-10-21 | 1991-07-26 | Duflos Tech Indles Sarl | IMPROVEMENTS IN DEVICES FOR TREATING CAVITY AND IN PARTICULAR FOR CLEANING TANKS BY SPRAYING PRESSURE FLUID |
US5172710A (en) * | 1989-02-06 | 1992-12-22 | Sybron Chemicals Inc. | Apparatus for spraying a liquid in vessel |
DE29501036U1 (en) * | 1995-01-24 | 1995-04-06 | Frank, Reiner Jakob, 74226 Nordheim | Device for cleaning the inside wall of a wine barrel |
-
1997
- 1997-11-28 FR FR9715252A patent/FR2771654B1/en not_active Expired - Fee Related
-
1998
- 1998-11-27 EP EP98956968A patent/EP0956165B1/en not_active Expired - Lifetime
- 1998-11-27 PT PT98956968T patent/PT956165E/en unknown
- 1998-11-27 WO PCT/FR1998/002549 patent/WO1999028058A1/en active IP Right Grant
- 1998-11-27 ES ES98956968T patent/ES2217602T3/en not_active Expired - Lifetime
- 1998-11-27 AT AT98956968T patent/ATE260717T1/en not_active IP Right Cessation
- 1998-11-27 DE DE69822131T patent/DE69822131T2/en not_active Expired - Fee Related
-
1999
- 1999-07-28 OA OA9900166A patent/OA11080A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108714608A (en) * | 2018-06-05 | 2018-10-30 | 马鞍山市三川机械制造有限公司 | A kind of cylindrical shape auto parts and components cleaning device |
Also Published As
Publication number | Publication date |
---|---|
OA11080A (en) | 2003-03-13 |
FR2771654A1 (en) | 1999-06-04 |
ATE260717T1 (en) | 2004-03-15 |
FR2771654B1 (en) | 2000-01-07 |
PT956165E (en) | 2004-07-30 |
EP0956165A1 (en) | 1999-11-17 |
ES2217602T3 (en) | 2004-11-01 |
DE69822131T2 (en) | 2005-03-03 |
DE69822131D1 (en) | 2004-04-08 |
WO1999028058A1 (en) | 1999-06-10 |
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