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FR2827526A1 - Interface band in thin sheet metal, e.g. for air distillation unit, has for corrugated packing band in packing module where corrugations are at angle to general direction of fluid circulation - Google Patents

Interface band in thin sheet metal, e.g. for air distillation unit, has for corrugated packing band in packing module where corrugations are at angle to general direction of fluid circulation Download PDF

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Publication number
FR2827526A1
FR2827526A1 FR0109745A FR0109745A FR2827526A1 FR 2827526 A1 FR2827526 A1 FR 2827526A1 FR 0109745 A FR0109745 A FR 0109745A FR 0109745 A FR0109745 A FR 0109745A FR 2827526 A1 FR2827526 A1 FR 2827526A1
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France
Prior art keywords
interface
packing
strip
corrugation
band
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.)
Withdrawn
Application number
FR0109745A
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French (fr)
Inventor
Etienne Werlen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to FR0109745A priority Critical patent/FR2827526A1/en
Publication of FR2827526A1 publication Critical patent/FR2827526A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • F25J3/04909—Structured packings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/3221—Corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B01J2219/32217—Plurality of essentially parallel sheets with sheets having corrugations which intersect at an angle of 90 degrees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32237—Sheets comprising apertures or perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32255—Other details of the sheets
    • B01J2219/32258—Details relating to the extremities of the sheets, such as a change in corrugation geometry or sawtooth edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32255—Other details of the sheets
    • B01J2219/32262—Dimensions or size aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32265—Sheets characterised by the orientation of blocks of sheets
    • B01J2219/32272—Sheets characterised by the orientation of blocks of sheets relating to blocks in superimposed layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32408—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/328—Manufacturing aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/332—Details relating to the flow of the phases
    • B01J2219/3325—Counter-current flow

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The interface band has a connecting zone (32) with a corrugation complementary to the corrugation of the packing band (20). An interface zone (34) connected to the connecting zone has a corrugation (36) which changes from the inclination of the packing band to the general direction of circulation of the fluid (D) The cross-corrugated packing module (16) contains bands which have a corrugation that is generally inclined to the general direction of circulation of fluid (D). The corrugations in the interface zone extend parallel to the general direction of circulation of fluid on the opposite side of the connecting zone. The band contains a perforation. The opposite edge of the connecting zone is turned down when mounted and is crenellated. The radius of curvature of the peaks of the corrugations is around three times the hydraulic diameter of the channels formed by the corrugations. An equalization nick or relief in each peak in the connecting zone fits against a convex peak in the corrugations of the packing band when the interface band is mounted. An Independent claim is included for a packing for a fluid treatment device, such as an air distillation unit, containing at least two cross-corrugated packing modules with two interface modules as described above, one on the top edge of the bottom module and one on the bottom edge of the top module.

Description

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La présente invention concerne une bande d'interface en matière en feuille, notamment en tôle, pour bande ondulée de garnissage d'un module de garnissage ondulé-croisé, cette bande de garnissage présentant une ondulation d'orientation générale inclinée par rapport à une direction générale de circulation de fluide.  The present invention relates to an interface strip made of sheet material, in particular sheet metal, for a corrugated strip for filling a cross-corrugated packing module, this filling strip having a corrugation of general orientation inclined with respect to a direction. general fluid circulation.

On entend par garnissage un dispositif destiné au mélange d'une phase et/ou à la mise en contact de plusieurs phases circulant à co-courant ou à contre-courant. Dans le garnissage peut en particulier se produire un échange de chaleur et/ou de matière et/ou une réaction chimique. Une application particulière de l'invention réside dans les colonnes séparant de mélanges gazeux, notamment les colonnes de distillation d'air.  The term “packing” is intended to mean a device intended for mixing a phase and / or for bringing several phases flowing in co-current or against the current into contact. In the lining, in particular, heat and / or material exchange and / or a chemical reaction can take place. A particular application of the invention lies in the columns separating from gas mixtures, in particular the air distillation columns.

On connaît dans l'état de la technique des installations de distillation d'air comprenant des modules de garnissage ondulé-croisé, également appelés packs .  There are known in the state of the art air distillation installations comprising corrugated-cross packing modules, also called packs.

Les modules comprennent des tôles ondulées disposées parallèlement, tôles dont les ondulations sont obliques par rapport à une direction générale de circulation de fluide dans l'installation, et inclinées alternativement, généralement croisées de 900, d'une tôle à l'autre. The modules include corrugated sheets arranged in parallel, sheets whose corrugations are oblique with respect to a general direction of circulation of fluid in the installation, and inclined alternately, generally crossed by 900, from one sheet to the other.

Les modules de garnissage sont enfilés dans la colonne de distillation de façon à ce que les tôles d'un module sont décalées angulairement par rapport aux tôles d'un module adjacent autour de l'axe de la colonne, généralement de 900 d'un module à l'autre.  The packing modules are threaded into the distillation column so that the sheets of a module are angularly offset with respect to the sheets of an adjacent module around the axis of the column, generally 900 of a module to the other.

Pendant l'utilisation, le gaz est contraint de changer de direction selon un tel angle pour passer d'un module à l'autre, avec une perte de charge correspondante à cet emplacement. Cette perte de charge provoque une accumulation de liquide dans la zone inférieure du module supérieur et un engorgement de la colonne à cet emplacement, tandis que la partie centrale des modules n'a pas encore  During use, the gas is forced to change direction at such an angle to pass from one module to another, with a corresponding pressure drop at this location. This pressure drop causes an accumulation of liquid in the lower zone of the upper module and engorgement of the column at this location, while the central part of the modules has not yet

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atteint son point d'engorgement. Ce phénomène diminue la capacité de traitement de la colonne.  reaches its engorgement point. This phenomenon decreases the processing capacity of the column.

Afin de réduire cet effet, on a proposé dans l'état de la technique des modules de garnissage ayant une zone d'interface structurée.  In order to reduce this effect, there have been proposed in the state of the art packing modules having a structured interface zone.

Un tel module de garnissage est décrit par exemple dans le WO-A-97/16 247.  Such a packing module is described for example in WO-A-97/16 247.

Dans ce module, les bandes de garnissage comprennent des ondulations à sommets courbes qui s'étendent, sur le bord faisant face à un module adjacent, parallèlement à l'axe de circulation général du fluide.  In this module, the packing strips include corrugations with curved vertices which extend, on the edge facing an adjacent module, parallel to the general axis of circulation of the fluid.

Ces ondulations courbes raccordent ce bord de la bande aux ondulations se trouvant vers le milieu du module, lesquelles s'étendent obliquement par rapport à la direction générale de circulation.  These curved undulations connect this edge of the strip to the undulations lying towards the middle of the module, which extend obliquely to the general direction of circulation.

Les bandes de garnissage décrites dans le WO-A précité sont fabriquées à partir d'une tôle et d'un seul tenant. De telles bandes sont difficiles à fabriquer étant donné qu'elles nécessitent de grandes énergies de déformation et des outils spécialisés.  The packing strips described in the aforementioned WO-A are manufactured from a sheet and in one piece. Such bands are difficult to manufacture since they require large deformation energies and specialized tools.

L'invention a pour but de proposer un module de garnissage à faible perte de charge qui soit facile à fabriquer.  The object of the invention is to propose a packing module with low pressure drop which is easy to manufacture.

A cet effet, l'invention a pour objet une bande d'interface du type précité, caractérisée en ce que la bande d'interface comporte une zone de raccordement comportant une ondulation complémentaire de l'ondulation de la bande de garnissage, et une zone d'interface qui se raccorde à la zone de raccordement, cette zone d'interface présentant une ondulation dont la direction change de l'inclinaison de l'ondulation de la bande de garnissage sensiblement à la direction générale de circulation de fluide.  To this end, the subject of the invention is an interface strip of the aforementioned type, characterized in that the interface strip comprises a connection zone comprising a corrugation complementary to the corrugation of the lining strip, and a zone interface which is connected to the connection zone, this interface zone having a corrugation whose direction changes from the inclination of the corrugation of the packing strip substantially to the general direction of fluid circulation.

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Suivant des modes particuliers de réalisation, l'invention peut comporter une ou plusieurs des caractéristiques suivantes : - les ondulations de la zone d'interface s'étendent parallèlement à la direction générale de circulation de fluide sur le bord opposé à la zone de raccordement ; - la bande comporte une perforation ; - le bord opposé à la zone de raccordement est tourné vers le bas, à l'état monté, et ce bord est crénelé ; - le rayon de courbure des sommets des ondulations de la bande d'interface est environ trois fois le diamètre hydraulique des canaux formés par l'ondulation ; - la bande comporte une encoche d'égalisation ménagée dans chaque sommet de la zone de raccordement qui s'applique contre un sommet convexe de l'ondulation de la bande de garnissage, à l'état monté ; et - la bande comporte un relief d'égalisation en creux embouti ménagé dans chaque sommet de la zone de raccordement qui s'applique contre un sommet concave de l'ondulation de la bande de garnissage à l'état monté.  According to particular embodiments, the invention may include one or more of the following characteristics: - the undulations of the interface zone extend parallel to the general direction of fluid circulation on the edge opposite to the connection zone; - the strip has a perforation; - The edge opposite to the connection zone is turned downwards, in the assembled state, and this edge is crenellated; the radius of curvature of the vertices of the undulations of the interface strip is approximately three times the hydraulic diameter of the channels formed by the undulation; - The strip has an equalization notch formed in each top of the connection zone which is applied against a convex top of the undulation of the lining strip, in the assembled state; and the strip includes a stamped hollow equalization relief formed in each top of the connection zone which is applied against a concave top of the undulation of the packing strip in the mounted state.

L'invention a en outre pour objet un garnissage pour un appareil de traitement de fluide (s), notamment pour colonne de distillation cryogénique, ce garnissage comportant au moins deux modules de garnissage ondulé-croisé ayant des orientations différentes, notamment décalées angulairement de 900, et deux empilements de bandes d'interface tels que définis plus haut étant prévus respectivement sur le bord inférieur du module de garnissage supérieur et sur le bord supérieur du module de garnissage inférieur.  The invention further relates to a packing for a fluid treatment device (s), in particular for a cryogenic distillation column, this packing comprising at least two corrugated-cross packing modules having different orientations, in particular angularly offset by 900 , and two stacks of interface strips as defined above being provided respectively on the lower edge of the upper lining module and on the upper edge of the lower lining module.

L'invention a encore pour objet un appareil de traitement de fluide (s), caractérisé en ce qu'il comprend au moins un module de garnissage comportant des bandes  The invention also relates to a fluid treatment device (s), characterized in that it comprises at least one packing module comprising strips

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ondulées de garnissage, munies chacune d'une bande d'interface telle que définie plus haut.  corrugated lining, each provided with an interface strip as defined above.

Selon des modes particuliers de réalisation, l'appareil peut comporter les caractéristiques suivantes : - les bandes ondulées de garnissage sont décalées angulairement autour de l'axe central de l'appareil par rapport à celles des modules de garnissage adjacents ; et - l'appareil constitue une colonne d'échange de matière et/ou de chaleur, notamment de séparation d'un mélange de gaz et en particulier une colonne de distillation d'air.  According to particular embodiments, the device can include the following characteristics: - the corrugated packing strips are angularly offset around the central axis of the device with respect to those of the adjacent packing modules; and the device constitutes a column for exchanging material and / or heat, in particular for separating a mixture of gases and in particular an air distillation column.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels : - la Figure 1 est une vue schématique en coupe longitudinale d'une colonne comprenant des modules selon l'invention ; - la Figure 2 représente le détail II de la Figure 1 à plus grande échelle ; - la Figure 3 est une vue en perspective d'une bande de garnissage et d'une bande d'interface selon l'invention.  The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the accompanying drawings, in which: - Figure 1 is a schematic view in longitudinal section of a column comprising modules according to the invention; - Figure 2 shows the detail II of Figure 1 on a larger scale; - Figure 3 is a perspective view of a lining strip and an interface strip according to the invention.

Sur la Figure 1, on a représente une colonne d'échange de matière 2 à axe général vertical X-X. La colonne 2 comprend, à son extrémité supérieure 4, une entrée de liquide 6 ainsi qu'une sortie de vapeur 8. A son extrémité inférieure 10, elle comprend une entrée de vapeur 12 et une sortie de liquide 14.  In Figure 1, we have a material exchange column 2 with a general vertical axis X-X. Column 2 comprises, at its upper end 4, a liquid inlet 6 as well as a steam outlet 8. At its lower end 10, it comprises a steam inlet 12 and a liquid outlet 14.

Une pluralité de modules de garnissage 16 est disposée dans une virole V de la colonne 2. Un support 18 maintient les modules de garnissage 16. Chaque module de garnissage 16 comprend une multitude de bandes ondulées de garnissage 20 comprenant chacune des ondulations parallèles 22, ici à section triangulaire (voir Figure 3). Les bandes  A plurality of packing modules 16 is arranged in a ferrule V of the column 2. A support 18 holds the packing modules 16. Each packing module 16 comprises a multitude of corrugated strips of filling 20 each comprising parallel corrugations 22, here with triangular section (see Figure 3). Groups

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sont disposées chacune parallèlement à une direction générale D de circulation des fluides dans la colonne 2, à savoir verticalement, et les unes contre les autres. Ces ondulations 22 s'étendent obliquement par rapport à l'axe vertical de la colonne 2 et définissent des canaux 23 de section transversale triangulaire. Les canaux sont ouverts sur un côté et fermés sur deux côtés. Les ondulations 22 d'une bande sont décalées angulairement de 900 par rapport aux ondulations 22 des bandes voisines, c'est-à-dire qu'elle sont inclinées alternativement à 450 dans un sens et dans l'autre d'une bande 20 à l'autre.  are each arranged parallel to a general direction D of circulation of the fluids in column 2, namely vertically, and one against the other. These undulations 22 extend obliquely to the vertical axis of the column 2 and define channels 23 of triangular cross section. The channels are open on one side and closed on two sides. The corrugations 22 of a strip are angularly offset by 900 relative to the corrugations 22 of the neighboring strips, that is to say that they are inclined alternately at 450 in one direction and in the other by a strip 20 to the other.

Les bandes 20 ondulées du module de garnissage 16 comportent chacune sur leurs parties supérieure et inférieure, faisant face à un module de garnissage 16 adjacent, une bande d'interface 30, par exemple en tôle.  The corrugated strips 20 of the lining module 16 each have on their upper and lower parts, facing an adjacent lining module 16, an interface strip 30, for example made of sheet metal.

La bande d'interface 30 comporte une zone de raccordement 32 comportant une ondulation 31 complémentaire de l'ondulation 22 de la bande de garnissage 20. En outre, elle comporte une zone d'interface 34 qui se raccorde à la zone de raccordement 32, cette zone d'interface 34 présentant une ondulation 36 de même forme et de même pas que l'ondulation 31 et dont la direction change de l'inclinaison de l'ondulation 31 à la direction générale de circulation des fluides D.  The interface strip 30 comprises a connection zone 32 comprising a corrugation 31 complementary to the corrugation 22 of the lining strip 20. In addition, it comprises an interface zone 34 which is connected to the connection zone 32, this interface zone 34 having a ripple 36 of the same shape and not the same as the ripple 31 and the direction of which changes from the inclination of the ripple 31 to the general direction of circulation of the fluids D.

En se référant aux Figures 2 et 3, on voit que la bande d'interface 30 comporte aux sommets de l'ondulation 31 des encoches d'égalisation 40 afin d'éviter une surépaisseur par rapport à la bande ondulée de garnissage 20. Les encoches 40 assurent que les extrémités des sommets 41 de l'ondulation 22 de la bande de garnissage 20 adjacente s'appliquent au fond des encoches 40, et que ces sommets 41 prolongent les sommets de l'ondulation 31 de la bande d'interface 30. Chaque encoche d'égalisation 40 s'étend ainsi, à l'état monté, du bord 42 de la bande d'interface 30  With reference to FIGS. 2 and 3, it can be seen that the interface strip 30 has at the apexes of the corrugation 31 equalization notches 40 in order to avoid an excess thickness relative to the corrugated lining strip 20. The notches 40 ensure that the ends of the vertices 41 of the corrugation 22 of the adjacent lining strip 20 apply to the bottom of the notches 40, and that these vertices 41 extend the vertices of the corrugation 31 of the interface strip 30. Each equalization notch 40 thus extends, in the assembled state, from the edge 42 of the interface strip 30

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tourné vers la bande de garnissage 20 jusqu'au bord d'extrémité 44 de cette dernière.  facing the trim strip 20 up to the end edge 44 of the latter.

Les modules de garnissage 16 sont cerclés d'une bande de cerclage 45 en tôle qui maintient les bandes de garnissage 20 et les bandes d'interface 30 par serrage.  The lining modules 16 are encircled by a sheet metal strapping band 45 which holds the lining strips 20 and the interface strips 30 by tightening.

La bande d'interface ainsi que les bandes de garnissage 20 peuvent être munies d'une perforation.  The interface strip as well as the trim strips 20 can be provided with a perforation.

Les bords inférieurs 46 des bandes d'interface 30 inférieures sont crénelées afin de créer des points bas qui aident à la formation de gouttes de liquide et évitent ainsi que le liquide soit collecté par capillarité sur le bord inférieur 46 de ces bandes d'interface 30.  The lower edges 46 of the lower interface strips 30 are crenellated in order to create low points which aid in the formation of drops of liquid and thus prevent the liquid from being collected by capillarity on the lower edge 46 of these interface strips 30 .

Il est à noter que le rayon de courbure des plis des bandes d'interface 30 est de l'ordre de trois fois le diamètre hydraulique d'un des canaux 23.  It should be noted that the radius of curvature of the folds of the interface strips 30 is of the order of three times the hydraulic diameter of one of the channels 23.

Les modules de garnissage 16 comprenant des bandes d'interface selon l'invention sont fabriqués de la façon suivante :
Tout d'abord, on fabrique en continu les bandes d'interface 30 à partir d'une bande en tôle plate en utilisant un outil de pliage coudé classique. Puis on découpe les encoches d'égalisation 40 dans la bande d'interface ondulée. Pour la bande de garnissage 20, on peut utiliser une tôle ondulée de garnissage classique. The lining modules 16 comprising interface strips according to the invention are manufactured in the following manner:
First, the interface strips 30 are continuously fabricated from a flat sheet strip using a conventional bent bending tool. Then the equalization notches 40 are cut from the corrugated interface strip. For the packing strip 20, it is possible to use a corrugated sheet of conventional packing.

Ensuite, on découpe des segments de bandes d'interface 30 et de bandes de garnissage 20 aux longueurs nécessaires pour réaliser le module de garnissage 16.  Then, segments of interface strips 30 and lining strips 20 are cut to the lengths necessary to produce the lining module 16.

Ensuite, on emboîte les bandes d'interface 30 sur les deux côtés de la bande de garnissage 20, pour les modules de garnissage 16 disposés entre deux modules de garnissage adjacents, supérieurs et inférieurs respectivement, à l'état monté. Afin de créer un module de garnissage 16 d'extrémité, on emboîte la bande d'interface 30 seulement sur un côté de la bande de garnissage 20.  Then, the interface strips 30 are fitted on the two sides of the lining strip 20, for the lining modules 16 arranged between two adjacent lining modules, upper and lower respectively, in the assembled state. In order to create an end trim module 16, the interface strip 30 is fitted only on one side of the trim strip 20.

<Desc/Clms Page number 7> <Desc / Clms Page number 7>

Puis on empile les ensembles bandes d'interface 30/bandes de garnissage 20, et on entoure l'ensemble par une bande de cerclage 45 de façon classique.  Then the interface strip 30 / lining strip 20 assemblies are stacked, and the assembly is surrounded by a strapping band 45 in a conventional manner.

On constate que la fabrication du module d'interface 16 peut être effectuée à une cadence élevée grâce à la fabrication en continu de la bande d'interface 30. En outre, étant donné qu'on peut utiliser une tôle de garnissage standard pour la partie médiane de chaque module de garnissage 16, celui-ci est peu coûteux.  It is noted that the manufacture of the interface module 16 can be carried out at a high rate thanks to the continuous manufacture of the interface strip 30. Furthermore, since a standard lining sheet can be used for the part median of each lining module 16, it is inexpensive.

En variante, c'est la bande de garnissage 20 qui peut être munie des évidements d'égalisation aux emplacements qui coopèrent avec la bande d'interface 30.  As a variant, it is the packing strip 20 which can be provided with equalization recesses at the locations which cooperate with the interface strip 30.

En variante encore, les encoches 40 peuvent être remplacées par des reliefs en creux emboutis prévus dans la bande 20 ou 30 qui est recouverte par l'autre. In another variant, the notches 40 can be replaced by stamped hollow reliefs provided in the strip 20 or 30 which is covered by the other.

Claims (10)

REVENDICATIONS 1. Bande d'interface en matière en feuille, notamment en tôle, pour bande ondulée de garnissage (20) d'un module de garnissage ondulé-croisé (16), cette bande de garnissage (20) présentant une ondulation (22) d'orientation générale inclinée par rapport à une direction générale (D) de circulation de fluide, caractérisée en ce que la bande d'interface (30) comporte une zone de raccordement (32) comportant une ondulation complémentaire de l'ondulation (22) de la bande de garnissage (20), et une zone d'interface (34) qui se raccorde à la zone de raccordement (32), cette zone d'interface (34) présentant une ondulation (36) dont la direction change de l'inclinaison de l'ondulation (22) de la bande de garnissage sensiblement à la direction générale (D) de circulation de fluide. 1. Interface strip made of sheet material, in particular sheet metal, for corrugated lining strip (20) of a corrugated-cross lining module (16), this lining strip (20) having a corrugation (22) d general orientation inclined with respect to a general direction (D) of fluid circulation, characterized in that the interface strip (30) comprises a connection zone (32) comprising a corrugation complementary to the corrugation (22) of the trim strip (20), and an interface zone (34) which is connected to the connection zone (32), this interface zone (34) having a ripple (36) whose direction changes from inclination of the corrugation (22) of the packing strip substantially in the general direction (D) of fluid circulation. 2. Bande d'interface selon la revendication 1, caractérisée en ce que les ondulations (36) de la zone d'interface (34) s'étendent parallèlement à la direction générale (D) de circulation de fluide sur le bord opposé à la zone de raccordement (32).  2. Interface strip according to claim 1, characterized in that the undulations (36) of the interface zone (34) extend parallel to the general direction (D) of fluid circulation on the edge opposite to the connection area (32). 3. Bande d'interface selon la revendication 1 ou la revendication 2, caractérisée en ce qu'elle comporte une perforation.  3. Interface strip according to claim 1 or claim 2, characterized in that it comprises a perforation. 4. Bande d'interface selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le bord opposé à la zone de raccordement (32) est tourné vers le bas, à l'état monté, et en ce que ce bord est crénelé (46).  4. Interface strip according to any one of claims 1 to 3, characterized in that the edge opposite the connection zone (32) is turned downwards, in the assembled state, and in that this edge is crenellated (46). 5. Bande d'interface selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le rayon de courbure des sommets des ondulations (31, 36) de la bande d'interface est environ trois fois le diamètre hydraulique des canaux (23) formés par l'ondulation (22).  5. Interface strip according to any one of claims 1 to 4, characterized in that the radius of curvature of the vertices of the undulations (31, 36) of the interface strip is approximately three times the hydraulic diameter of the channels ( 23) formed by the ripple (22). 6. Bande d'interface selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comporte  6. Interface strip according to any one of claims 1 to 5, characterized in that it comprises <Desc/Clms Page number 9><Desc / Clms Page number 9> une encoche d'égalisation (40) ménagée dans chaque sommet de la zone de raccordement (32) qui s'applique contre un sommet convexe (41) de l'ondulation (22) de la bande de garnissage (20), à l'état monté.  an equalization notch (40) formed in each top of the connection zone (32) which is applied against a convex top (41) of the corrugation (22) of the filling strip (20), at the mounted state. 7. Bande d'interface selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comporte un relief d'égalisation en creux embouti ménagé dans chaque sommet de la zone de raccordement (32) qui s'applique contre un sommet concave de l'ondulation (22) de la bande de garnissage (20) à l'état monté.  7. Interface strip according to any one of claims 1 to 5, characterized in that it includes a stamped hollow equalization relief formed in each vertex of the connection zone (32) which is applied against a concave top of the corrugation (22) of the packing strip (20) in the assembled state. 8. Garnissage pour un appareil de traitement de fluide (s), notamment pour colonne de distillation cryogénique, ce garnissage comportant au moins deux modules de garnissage ondulé-croisé (16) ayant des orientations différentes, notamment décalées angulairement de 900, et deux empilements de bandes d'interface (30) selon l'une quelconque des revendications 1 à 7 étant prévus respectivement sur le bord inférieur du module de garnissage (16) supérieur et sur le bord supérieur du module de garnissage (16) inférieur.  8. Packing for a fluid processing device (s), in particular for cryogenic distillation column, this packing comprising at least two corrugated-cross packing modules (16) having different orientations, in particular angularly offset by 900, and two stacks interface strips (30) according to any one of claims 1 to 7 being provided respectively on the lower edge of the upper trim module (16) and on the upper edge of the lower trim module (16). 9. Appareil de traitement de fluide (s), caractérisé en ce qu'il comprend au moins un module de garnissage (16) comportant des bandes ondulées de garnissage (20), munies chacune d'une bande d'interface (30) selon l'une quelconque des revendications 1 à 7.  9. Fluid treatment device (s), characterized in that it comprises at least one packing module (16) comprising corrugated packing strips (20), each provided with an interface strip (30) according to any one of claims 1 to 7. 10. Appareil suivant la revendication 9, caractérisé en ce que les bandes ondulées de garnissage (20) sont décalées angulairement autour de l'axe central (X-X) de l'appareil (2) par rapport à celles des modules de garnissage (16) adjacents.  10. Apparatus according to claim 9, characterized in that the corrugated packing strips (20) are angularly offset around the central axis (XX) of the device (2) relative to those of the packing modules (16) adjacent. Il. Appareil suivant la revendication 10 ou la revendication 9, caractérisé en ce qu'il constitue une colonne d'échange de matière et/ou de chaleur, notamment de  He. Apparatus according to claim 10 or claim 9, characterized in that it constitutes a column for the exchange of material and / or heat, in particular of <Desc/Clms Page number 10><Desc / Clms Page number 10> séparation d'un mélange de gaz et en particulier une colonne de distillation d'air. separation of a gas mixture and in particular an air distillation column.
FR0109745A 2001-07-20 2001-07-20 Interface band in thin sheet metal, e.g. for air distillation unit, has for corrugated packing band in packing module where corrugations are at angle to general direction of fluid circulation Withdrawn FR2827526A1 (en)

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FR0109745A FR2827526A1 (en) 2001-07-20 2001-07-20 Interface band in thin sheet metal, e.g. for air distillation unit, has for corrugated packing band in packing module where corrugations are at angle to general direction of fluid circulation

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FR0109745A FR2827526A1 (en) 2001-07-20 2001-07-20 Interface band in thin sheet metal, e.g. for air distillation unit, has for corrugated packing band in packing module where corrugations are at angle to general direction of fluid circulation

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Publication number Priority date Publication date Assignee Title
FR2929532A1 (en) * 2008-04-07 2009-10-09 Air Liquide COLUMN WITH HEAT EXCHANGE TRIM AND / OR MATERIAL
FR2947188A1 (en) * 2009-06-24 2010-12-31 Air Liquide Process for distilling fluid using cross-corrugated packing module comprising stack of sheet strips, which comprise edges extending perpendicular to the general orientation and corrugations that alternately form first and second main peaks

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US2042127A (en) * 1933-10-03 1936-05-26 Ici Ltd Apparatus for the treatment of gases or vapors with liquids
US5124087A (en) * 1990-10-04 1992-06-23 Evapco International, Inc. Gas and liquid contact body
WO1997016247A1 (en) * 1995-10-31 1997-05-09 Sulzer Chemtech Ag Structured packing
EP1078684A1 (en) * 1999-08-24 2001-02-28 Sulzer Chemtech AG Structured packing for separation columns

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2042127A (en) * 1933-10-03 1936-05-26 Ici Ltd Apparatus for the treatment of gases or vapors with liquids
US5124087A (en) * 1990-10-04 1992-06-23 Evapco International, Inc. Gas and liquid contact body
WO1997016247A1 (en) * 1995-10-31 1997-05-09 Sulzer Chemtech Ag Structured packing
EP1078684A1 (en) * 1999-08-24 2001-02-28 Sulzer Chemtech AG Structured packing for separation columns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2929532A1 (en) * 2008-04-07 2009-10-09 Air Liquide COLUMN WITH HEAT EXCHANGE TRIM AND / OR MATERIAL
WO2009136061A3 (en) * 2008-04-07 2010-04-08 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Column with heat and/or material exchange packing
US9108179B2 (en) 2008-04-07 2015-08-18 L′Air Liquide Société Anonyme Pour L′ Étude Et L′ Exploitation Des Procedes Georges Claude Column with heat and/or material exchange packing
FR2947188A1 (en) * 2009-06-24 2010-12-31 Air Liquide Process for distilling fluid using cross-corrugated packing module comprising stack of sheet strips, which comprise edges extending perpendicular to the general orientation and corrugations that alternately form first and second main peaks

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