EP3624952A1 - Distributeur de fluide multiphasique - Google Patents
Distributeur de fluide multiphasiqueInfo
- Publication number
- EP3624952A1 EP3624952A1 EP18718596.2A EP18718596A EP3624952A1 EP 3624952 A1 EP3624952 A1 EP 3624952A1 EP 18718596 A EP18718596 A EP 18718596A EP 3624952 A1 EP3624952 A1 EP 3624952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- enclosure
- fluid
- dispenser according
- longitudinal axis
- inlet
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 64
- 230000003628 erosive effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 31
- 239000007789 gas Substances 0.000 description 25
- 239000012071 phase Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 4
- 239000007792 gaseous phase Substances 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- -1 tungsten carbides Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
- B04C3/06—Construction of inlets or outlets to the vortex chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
- B04C2003/006—Construction of elements by which the vortex flow is generated or degenerated
Definitions
- the present invention relates to the general field of multiphase fluid distributors for dividing in equal parts a fluid flow composed of several different phases into several fluid flows having the same flow rate and the same composition.
- a particular field of application of the invention relates to submarine effluent treatment equipment used in the production of hydrocarbons, for example oil and gas, from submarine production wells.
- submarine gravity separators of the gas / liquid type called multi-pipe separators or condensate traps, which make it possible to optimize well protection as well as managing production shutdowns and restart by depressurizing the production lines.
- underwater gravity separators of the liquid / liquid type namely here oil / water
- Yet another particular field of application of the invention relates to the equitable distribution of a production gas in the multiple branches of a condenser or in multiple condensers which operate in parallel, for the purpose of drying or condensing the light phases of the gas, in order to condition it prior to transport along a low-temperature pipeline.
- Distributors known in the prior art generally comprise a cylindrical inlet, of size close to that of the feed pipe, at the bottom of which opens a succession of small orifices arranged axisymmetrically.
- the distributor is generally arranged vertically, with the inlet at the bottom and the outlet openings at the top, in order to cancel the effects that gravity could have on the location of the phases. just before the distribution.
- the supply pipe will advantageously be positioned vertically and with a length greater than ten times its diameter so that the multiphase flow has an axisymmetric facies (at least on average over a period of a few seconds), a guarantee of equity. of distribution.
- these distributors may have certain limitations.
- the present invention therefore has the main purpose of providing a multiphasic fluid dispenser that does not have the aforementioned drawbacks.
- a multiphase fluid distributor comprising a cylindrical enclosure having at one longitudinal end an inlet orifice and at an opposite longitudinal end a plurality of cylindrical outlet orifices of the same cross-section, regularly distributed around a longitudinal axis of the enclosure and aligned in a same plane transverse to the enclosure, the inlet and outlet ports each opening inside the enclosure in a substantially tangential direction to the enclosure.
- the multiphasic fluid penetrates inside the chamber through the inlet orifice being injected tangentially thereto. Thanks to the centrifugal force, the liquid phase of a gas / liquid fluid will press against the inner wall of the chamber to form a liquid film flowing in a helical gyratory movement, while the gaseous part of the gas / liquid medium liquid will form a central gas flow flowing longitudinally from bottom to top in the center of the liquid film.
- the multiphasic fluid entering the chamber is directed towards the opposite end of the chamber, so that the particles of the liquid film thus created follow ascending helical paths.
- the liquid film is ejected by the centrifugal force out of the enclosure through the outlets.
- the gas phase of the multiphasic fluid As for the gas phase of the multiphasic fluid, it will accumulate in the center of the upper part of the enclosure and may flow through the upper part of the outlet orifices. If the liquid film however occupies the entire section of these orifices, this gas phase will see its pressure increase until it escapes periodically through the outlet orifices. passing through the liquid film when its pressure becomes greater than that of the output ports (rapid pulsation phenomenon).
- the equidistribution of different phases of the multiphase fluid thus results from the axial symmetry of the distributor and from the axial symmetry of the flow within the enclosure. Furthermore, it has been found that the multiphasic fluid is equitably discharged through the various outlet orifices, provided that the centrifugation speed of the fluid is sufficient and the pulsation of the intermittent expulsion of the gas phase of the multiphasic fluid is effected. equally.
- a minimum tangential velocity of 0.8m / s and a minimum axial velocity of O.lm / s for all the combined phases are necessary in the enclosure. These speeds are obtained by the appropriate dimensioning of the enclosure and its internal elements as a function of the fluid flow rates to be considered.
- the pulsation of the expulsion of the gas phase through the liquid film in front of the outlet orifices it is carried out equitably provided that the pressures in each of the outlet orifices are substantially balanced.
- the dispenser further comprises fluid guiding means for imparting a helical movement to fluid flowing within the enclosure from the inlet port to the outlet ports.
- the fluid guiding means may advantageously comprise a guide ramp having a helical shape centered on the longitudinal axis of the enclosure.
- the guide ramp may be carried by a cylinder centered on the longitudinal axis of the enclosure or by an inner wall of the enclosure.
- the latter advantageously also has a deflector positioned facing the inlet to help the fluid to borrow the guide ramp.
- the inlet orifice advantageously opens inside the enclosure by forming an inclined angle towards the outlet orifices.
- the inlet orifice may form an angle with a transverse axis of the enclosure which is substantially equal to an angle of the helix of the guide ramp.
- the angle made by the inlet orifice and the helix of the guide ramp with the transverse axis of the enclosure is between 5 ° and 30 °.
- the dispenser may further comprise a ring of erosion-resistant material centered on the longitudinal axis of the enclosure and positioned inside thereof, said ring being provided with a plurality of fluid passage slots each positioned opposite an outlet port.
- the enclosure may further comprise a gaseous exhaust orifice centered on the longitudinal axis of the enclosure and located at the longitudinal end of the enclosure. enclosure at which the outlets are positioned. This exhaust port makes it possible to extract as much gas as possible upstream of the distribution so as to minimize the gas content of the dispensed fluid.
- the enclosure may be formed by sealing assembly between a box and a lid, the inlet being formed in the box and the outlet ports being formed in the lid.
- the fluid guiding means is configured to allow the fluid to perform two turns around the longitudinal axis of the enclosure from the inlet port to the outlet ports. This feature provides a compact enclosure by reducing the travel distance between the inlet port and the outlet ports.
- FIG. 1 is a perspective view of a dispenser according to one embodiment of the invention.
- Figure 2 is a side view of the dispenser of Figure 1;
- FIGS. 3 to 5 are sectional views of Figure 2 respectively along III-III, IV-IV and V-V;
- FIG. 6 is a side view of a dispenser according to another embodiment of the invention
- - Figure 7 is a sectional view along VII-VII of the distributor of Figure 7;
- FIG. 8 is a cross-sectional view of the dispenser showing its outlet orifices.
- FIG. 9 is a perspective view showing a guide ramp that can equip the dispensers of FIGS. 1 and 6.
- the invention relates to a multiphase fluid distributor for submarine effluent treatment equipment, in particular segmented gravity separators which are used in the production of hydrocarbons in deep offshore.
- multiphase fluid is meant here a fluid comprising at least two different phases, for example a liquid phase and a gaseous phase.
- Figures 1 to 5 show a distributor 2 according to a first embodiment of the invention.
- the distributor 2 comprises in particular a cylindrical chamber 4 of longitudinal axis X-X positioned vertically. At its lower longitudinal end, the chamber 4 comprises an inlet port 6 for the multiphase fluid. At its upper longitudinal end opposite the lower end, the enclosure has a plurality of cylindrical outlet orifices 8.
- the inlet port 6 opens inside the enclosure 4, firstly in a direction substantially tangential thereto, and secondly by forming an angle with an axis transverse YY of the enclosure which is inclined towards the outlet orifices 8.
- This angle a is preferably between 5 ° and 30 °.
- the multiphasic fluid enters the enclosure of the distributor in its lower part being animated by an ascending helical movement around the longitudinal axis XX of the enclosure.
- the tangential orientation of the inlet orifice makes it possible in particular to limit the impact of the multiphasic fluid jet against the inner wall of the enclosure and facilitates the rapid formation of a liquid film in helical rotation, pressed against the inner wall of the distributor body 4.
- the outlet orifices 8 they are on the embodiment of Figures 1 to 5, eight in number and are regularly distributed around the longitudinal axis XX of the enclosure.
- outlet orifices 8 each have a cylindrical shape with a respective longitudinal axis 8a, these longitudinal axes 8a being all located in the same transverse plane P of the enclosure 4.
- the cross section (of circular shape) of the orifices output is identical for all the outlets and they open inside the enclosure in a direction substantially tangential thereto.
- the respective longitudinal axes 8a of two adjacent outlet orifices 8 form between them an angle ⁇ which is preferably less than 30 °, this angle ⁇ being the same for all the orifices of FIG. exit.
- the distribution of the outlet orifices 8 has an axial symmetry with respect to the longitudinal axis X-X. It follows that when the liquid pressed against the inner wall of the enclosure and animated by an ascending helical movement around the longitudinal axis XX of the enclosure reaches the transverse plane P, it is ejected, under the effect of the centrifugal force, in the set of outlet orifices, the flow ejected fluid by each outlet orifice being substantially the same for all of the outlet orifices due to the regularity of the thickness of the liquid film and of its ascending helical movement.
- the dispenser according to the invention further comprises fluid guiding means for imparting a helical movement to fluid flowing within the enclosure from the inlet port to the outlet ports.
- a guide ramp 10 having a helical shape centered on the longitudinal axis XX of the chamber 4 of the distributor is positioned inside the chamber between the inlet orifice 6 and the orifices. output 8.
- this guide ramp 10 in the form of a helix may be more precisely carried by a cylinder 12 which is centered on the longitudinal axis XX of the enclosure.
- this guide ramp could be carried by the inner wall of the enclosure.
- the orientation and the angle formed by the helix of the guide ramp 10 with a transverse axis YY of the enclosure are identical to the orientation and the angle a that forms the inlet orifice 6 with this transverse axis.
- the multiphasic fluid penetrates from below into the chamber 4 of the distributor tangentially to it and is directed towards the top of the distributor with an angle between 5 ° and 30 ° relative to the horizontal.
- the liquid phase of the multiphase fluid will develop a liquid film pressed against the inner wall of the chamber, this liquid film possibly taking the guide ramp 10 to be directed towards the upper part of the chamber.
- the enclosure where the outlet orifices 8 are positioned As for the gaseous phase of the multiphase fluid, it will concentrate in the center of the enclosure to go up towards the top of the enclosure.
- the liquid film flowing helically around the longitudinal axis XX is ejected under the effect of the centrifugal force out of the enclosure in each outlet orifice 8. being evenly distributed for all the outlets.
- the gas phase of the multiphasic fluid it will accumulate in the center of the upper part of the enclosure and may flow through the upper part of the outlet orifices. If the liquid film however occupies the entire section of these orifices, this gas phase will see its pressure increase until it escapes periodically through the outlet orifices 8 when its pressure exceeds that of the outlet orifices (phenomenon of pulsation).
- the distributor 2 further comprises a ring 14 which is centered on the longitudinal axis XX of the enclosure and which is positioned inside thereof. ring being provided with a plurality of fluid passage slots 16 which are each positioned facing an outlet port 8.
- this ring 14 with its fluid passage slots 16 upstream of the outlet orifices 8 has the advantage of allowing the use of erosion-resistant materials, such as ceramic, tungsten carbides, etc. in areas with sharp edges to preserve erosion that can be induced by high flow velocities and solid particles possibly driven by the fluid, while retaining for other parts of the distributor the use of more conventional materials, less expensive and easier to machine, such as carbon steel, iron-nickel alloys, etc.
- the enclosure 4 is formed by the assembly between a caisson 18 and a cover 20, the inlet orifice 6 being formed in the caisson 18 and the outlet ports 8 being formed in the lid. This assembly is sealed by means of an annular weld joint 22 between these two elements.
- the dispenser is for example used in an underwater gravity separator of the oil / water type, or a multitubes heat exchanger.
- the enclosure 4 'of the distributor 2' of this second embodiment further comprises a gaseous exhaust orifice 24 which is centered on the longitudinal axis XX of the enclosure and which is located at the longitudinal end of the enclosure at which are positioned the outlet ports 8 '.
- a buffer zone 26 is arranged within the enclosure 4 'between the outlet orifices 8' and the gaseous exhaust orifice 24.
- this distributor 2 ' is as follows.
- the multiphase fluid enters the chamber 4 'of the distributor tangentially to it and is directed towards the top of the distributor with an angle of between 5 ° and 30 ° relative to the horizontal.
- the liquid phase of the fluid will develop a liquid film pressed against the inner wall of the chamber, this liquid film possibly taking the guide ramp 10 'to be directed towards the upper part of the chamber.
- the enclosure where are positioned the outlet ports 8 '.
- the phase gaseous multiphase fluid it will focus in the center of the enclosure to go up the enclosure.
- the gaseous phase of the multiphase fluid As for the gaseous phase of the multiphase fluid, it will accumulate at the buffer zone 26 in the upper part of the chamber 4 '. In this buffer zone, the gas will get rid of the last drops of liquid which are driven radially by the centrifugal force and vertically by their own weight to join the liquid film and be discharged through the outlets 8 '.
- the pressure of the gas in this buffer zone exceeds that of the gas exhaust port 24, the gaseous phase of the multiphase fluid will be discharged through the gaseous exhaust orifice but also through the outlet orifices, provided that the pressure which There reign remains strictly lower than that prevailing in the outlets 8 '.
- coalescer system (grid or other) at the inlet of the gaseous exhaust port to filter the liquid particles or to position diaphragms at different heights above the outlet ports 8 '.
- the cylinder 12, 12 ' which carries the guide ramp 10, 10' also bears a deflector 28 which is positioned opposite of the inlet port. This deflector makes it possible to help the fluid to borrow the guide ramp.
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Cyclones (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1754301A FR3066414B1 (fr) | 2017-05-16 | 2017-05-16 | Distributeur de fluide multiphasique |
PCT/FR2018/050777 WO2018211183A1 (fr) | 2017-05-16 | 2018-03-29 | Distributeur de fluide multiphasique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3624952A1 true EP3624952A1 (fr) | 2020-03-25 |
EP3624952B1 EP3624952B1 (fr) | 2021-06-16 |
Family
ID=59325484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18718596.2A Active EP3624952B1 (fr) | 2017-05-16 | 2018-03-29 | Distributeur de fluide multiphasique |
Country Status (5)
Country | Link |
---|---|
US (1) | US11305296B2 (fr) |
EP (1) | EP3624952B1 (fr) |
BR (1) | BR112019022597B1 (fr) |
FR (1) | FR3066414B1 (fr) |
WO (1) | WO2018211183A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114320256B (zh) * | 2022-03-10 | 2022-05-31 | 东营宝业石油技术开发有限责任公司 | 井下配注器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2154779A (en) * | 1937-02-24 | 1939-04-18 | Shepherd Thomas Lambert | Method of and means for classifying and separating suspended solids |
US3010579A (en) * | 1959-08-17 | 1961-11-28 | Duesling Clarence Lehi | Mineral desliming concentrating and separating apparatus |
US4053291A (en) * | 1976-08-18 | 1977-10-11 | The United States Of America As Represented By The Secretary Of The Air Force | Cylindrical deaerator |
IT1171172B (it) * | 1983-06-03 | 1987-06-10 | Umberto Manola | Dispositivo particolarmente adatto per impianti adibiti alla separazione fisica dei componenti di farine ad uso alimentare o per altri usi |
FR2660214B1 (fr) * | 1990-03-28 | 1993-10-29 | Hispano Suiza | Dispositif desaerateur d'huile. |
US7185765B2 (en) * | 2003-11-19 | 2007-03-06 | Hakola Gordon R | Cyclone with in-situ replaceable liner system and method for accomplishing same |
JP2006272322A (ja) * | 2005-03-29 | 2006-10-12 | Samsung Kwangju Electronics Co Ltd | サイクロン集塵装置 |
GB2462213B (en) * | 2006-06-16 | 2010-12-22 | Cameron Int Corp | Separator and method of separation |
NL2000429C2 (nl) * | 2007-01-11 | 2008-07-14 | Schinfa Engineering | Inrichting en werkwijze voor het met een stationaire cycloon separeren van een stromend mediummengsel. |
JP5132476B2 (ja) | 2008-08-12 | 2013-01-30 | 株式会社東芝 | 使用済核燃料の再処理方法および遠心抽出装置 |
US8991622B2 (en) * | 2009-05-12 | 2015-03-31 | Advanced Technologies & Innovations B. V. | Separating device and method with a return flow of heavy fraction |
MA46853A (fr) * | 2016-11-17 | 2019-09-25 | Weir Minerals Australia Ltd | Dispositif distributeur d'appareil séparateur cyclone |
-
2017
- 2017-05-16 FR FR1754301A patent/FR3066414B1/fr not_active Expired - Fee Related
-
2018
- 2018-03-29 WO PCT/FR2018/050777 patent/WO2018211183A1/fr unknown
- 2018-03-29 BR BR112019022597-8A patent/BR112019022597B1/pt active IP Right Grant
- 2018-03-29 EP EP18718596.2A patent/EP3624952B1/fr active Active
- 2018-03-29 US US16/613,966 patent/US11305296B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3066414A1 (fr) | 2018-11-23 |
BR112019022597B1 (pt) | 2023-02-14 |
FR3066414B1 (fr) | 2020-11-06 |
WO2018211183A1 (fr) | 2018-11-22 |
EP3624952B1 (fr) | 2021-06-16 |
US20210069731A1 (en) | 2021-03-11 |
US11305296B2 (en) | 2022-04-19 |
BR112019022597A2 (pt) | 2020-05-19 |
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