EP0376823B2 - Procédé et dispositif de régulation d'un débit de CO2 liquide, et application à un tunnel de refroidissement - Google Patents
Procédé et dispositif de régulation d'un débit de CO2 liquide, et application à un tunnel de refroidissement Download PDFInfo
- Publication number
- EP0376823B2 EP0376823B2 EP89403619A EP89403619A EP0376823B2 EP 0376823 B2 EP0376823 B2 EP 0376823B2 EP 89403619 A EP89403619 A EP 89403619A EP 89403619 A EP89403619 A EP 89403619A EP 0376823 B2 EP0376823 B2 EP 0376823B2
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- EP
- European Patent Office
- Prior art keywords
- pressure
- pipe
- valve
- liquid
- downstream
- 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.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
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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
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
- B01F23/451—Mixing liquids with liquids; Emulsifying using flow mixing by injecting one liquid into another
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/48—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids
- B01F23/481—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids using liquefied or cryogenic gases
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/49—Mixing systems, i.e. flow charts or diagrams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/10—Arrangements for preventing freezing
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23762—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0335—Check-valves or non-return valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0338—Pressure regulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/013—Carbone dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/035—High pressure (>10 bar)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
- F17C2225/033—Small pressure, e.g. for liquefied gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0114—Propulsion of the fluid with vacuum injectors, e.g. venturi
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0636—Flow or movement of content
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/024—Improving metering
Definitions
- the present invention relates to a method and a device for regulating a flow of liquid CO 2 in a distribution pipe provided with a regulating valve and leading to at least one CO 2 injection station.
- CO 2 carbon dioxide
- CO 2 carbon dioxide
- the industrial field on the one hand for example: carbonation in chemistry, neutralization of basic agents and pH regulation in water treatment
- food industry on the other hand for example: rapid cooling and freezing, temperature control
- CO 2 is most often delivered in liquefied form and stored in this form in a tank.
- the characteristics of the processes require the ability to adapt the CO 2 flow rate to the load to be treated; it is therefore necessary to regulate the flow of CO 2 as a function of the characteristic parameters of the process: measurement of the pH in water treatments, measurement of temperature in cryogenic treatments, for example.
- the regulating method which is theoretically the most precise and economical with regard to the consumption of CO 2 is that of continuously regulating the flow of liquid CO 2 using a pilot valve with variable opening. , controlled by a proportional, derivative and integral regulator.
- the principle of such a valve is to present a restriction on the flow of the fluid.
- the section of this restriction is adjusted by means of a shutter element, moving continuously between two etreme positions under the effect of electrical or pneumatic energy.
- the CO 2 is present upstream of this valve at a pressure close to that of the reservoir, ie 11 to 60 ⁇ 10 5 Pa depending on the case.
- the section restriction causes, according to the laws of the flow of fluids, a loss of pressure all the more important as the section of passage to the shutter is low.
- the valve assumes a position close to its complete closure.
- the section restriction is then maximum, and the pressure drop at the passage of the shutter is large enough for the CO 2 pressure downstream of the valve to take values less than 5.2 ⁇ 10 5 Pa.
- This value of 5.2 x 10 5 Pa is the pressure of the triple point of CO 2, value below which the liquid CO 2 is instantly transforms into a mixture of CO 2 gas and solid CO 2 (dry ice) .
- control valves usable for these processes are such that the small diameter and the tortuous shape piping immediately downstream of the shutter lead to an immediate blockage as soon as carbon dioxide snow appears.
- Document FR-A-2,142,309 describes a device for atomizing liquid CO 2 comprising a line for dispensing liquid CO 2 provided with an all-or-nothing actuation valve, as mentioned above, operating alternately with an all-or-nothing valve of a gaseous CO 2 supply pipe supplying, at the outlet of the device, a gaseous stream of pre-pressurization of this outlet.
- the invention aims to allow in all cases, simply and reliably, the use of a continuously piloted valve.
- the method according to the invention is characterized in that one maintains, permanently during the whole operation of delivering the CO 2 flow, at least in the part of the pipe downstream of the valve, up to '' near the CO 2 injection point, an intermediate pressure higher than the pressure of the triple CO 2 point and in that before connecting the distribution line to a liquid CO 2 reservoir, we inject into this line, upstream and downstream of the valve, gaseous CO 2 at a pressure between the pressure of the triple point and said intermediate pressure.
- the invention also relates to a device for regulating a flow rate of liquid CO 2 for the implementation of such a method, as defined in claim 2.
- Document GB-A-807.088 describes a device for pressurizing a container with CO 2 from a source of liquid CO 2 , the device comprising a shutter cooperating with an orifice for expansion of the liquid CO 2 and coupled to a membrane so as to be kept normally open as long as the gas pressure in the container does not exceed a determined value.
- the regulating device shown in FIG. 1 is intended to supply a variable flow of CO 2 at an injection point A from a storage tank 2 in which a pressure PS is maintained which is clearly greater than the pressure PT at the point triple CO 2 (5.2 bars), and generally between 11 and 60 bars.
- the point A is at a determined pressure PO, for example substantially equal to the atmospheric pressure, but in any case less than PT.
- the regulating device 1 comprises a thermally insulated liquid line 3 extending from the bottom of the tank 2 to one overflow valve 4.
- a pilot-operated valve 5 is interposed in this pipe and defines in it a section upstream 6, from the tank to the valve, and a section downstream 7, from the valve to the overflow valve.
- This valve has a shutter whose position can vary continuously between an opening position maximum and a fully closed position, under the action of a motor 8.
- the latter is controlled by a regulator 9 which receives from a measure 10 (for example a pH meter or a thermometer) a signal representative of the quantity pilot.
- a measure 10 for example a pH meter or a thermometer
- the overflow valve 4 (FIG. 2) comprises a box 11 divided into two chambers by a membrane 12.
- a helical spring 13, the force of which is adjustable by means of a screw 14, is arranged in one of these rooms, while the other room (the lower chamber in Figure 2) receives the fluid contained in the pipe section 7.
- a shutter rod 15 is integral with the membrane and ends with a shutter 16 cooperating with a seat 17 located at the inlet of the outlet orifice 18 of the overflow.
- the elements 13 to 18 are all coaxial.
- the shutter 16 lifts from its seat if and only if the pressure in the lower spout chamber exceeds pressure corresponding to the force of the spring 13.
- a gaseous CO 2 pipe 19 leaves from the upper part of the tank 2 and comprises, from upstream to downstream, a stop valve 20 and a pressure reducer 21. The latter delivers downstream a pressure P2 greater than PT but less than PI . Downstream of the regulator 21, the pipe 19 is divided into two branches 22 and 23 ending respectively in the sections 6 and 7 respectively of the pipe 3. Each branch is equipped with a non-return valve 24 not authorizing the circulation of fluid than from regulator 21 to line 3.
- the liquid CO 2 is admitted into the pipe 3.
- the overflow valve 4 opens when the pressure in the section 7 is greater than the value PI, and a jet of carbon dioxide snow comes out then from the orifice 18.
- the evacuation of this snow is carried out without hindrance thanks to the arrangement of the orifice 18 in the axis of the membrane-obturator system.
- FIG. 4 An application of the variant of FIG. 3 is illustrated diagrammatically in FIG. 4. It is the regulation, from a pH measurement, of a flow of liquid CO 2 injected into a waste water pipe. 26 to neutralize a basic effluent.
- the pipe 25 opens into a venturi 27 intended for injecting and dispersing dry ice in the water flow.
- FIG. 5 a variant of the device of Figure 1 in which the pipe section 7 is divided into three branches 7A to 7C each leading to a respective overflow 4A to 4C. This makes it possible to supply CO 2 at several injection points and, by adopting different pressure settings for each outlet, to inject CO 2 flow rates that can be adjusted individually for each injection point.
- the regulation of the valve 5 is carried out on the basis of a single temperature measurement carried out near the exit of the tunnel.
- the CO 2 is injected in parallel by the overhangs 4A to 4C in order to distribute the refrigeration supply over the length of the tunnel 28.
- the overflow 4A located on the inlet side 29 of the products to be treated, conveyed by a belt conveyor 30, generates a CO 2 flow rate higher than the others due to its setting on a lower PI-A pressure.
- this first outlet may be the only one to flow.
- the invention can be applied to many other processes consuming CO 2 . It is particularly well suited for applications requiring a significant flow of CO 2 (at least 100 kg / h), delivered almost continuously and at a variable rate in a ratio of 1 to 5 approximately.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Motor Or Generator Cooling System (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Accessories For Mixers (AREA)
Description
- la figure 1 est une vue schématique d'un dispositif conforme à l'invention;
- la figure 2 est une vue en coupe longitudinale du déverseur de ce dispositif;
- la figure 3 est une vue partielle en coupe longitudinale, à plus grande échelle, d'une variante de ce déverseur;
- les figures 4 et 5 illustrent schématiquement des applications du procédé suivant l'invention.
Claims (7)
- Procédé de fourniture d'un débit variable de CO2 liquide à au moins un poste d'injection (A) via une conduite distributrice de CO2 liquide (3) pourvue d'une vanne régulatrice pilotée à section variable (5), dans lequel on délivre le débit de CO2 liquide au poste d'injection (A) au moyen d'un déverseur (4) s'ouvrant lorsque la pression en aval de la vanne (5) est supérieure à une pression déterminée (PI) supérieure à la pression (PT) du point triple du CO2, de façon à maintenir en permanence, au moins dans la partie de la conduite (3) en aval de la vanne (5) une pression supérieure à celle du point triple du CO2 et dans lequel avant de relier la conduite (3) à un réservoir (2) de CO2 liquide, on injecte dans cette conduite, en aval de la vanne (5), du CO2 gazeux à une pression (P2) comprise entre la pression (PT) du point triple et la pression déterminée (PI), et en ce qu'on injecte également du CO2 gazeux à ladite pression (P2) dans la partie de la conduite (3) en amont de la vanne (5).
- Dispositif de fourniture d'un débit variable de CO2 liquide à un poste d'injection de CO2 (A), comprenant un réservoir (2) de CO2 sous pression relié à une conduite (3) distributrice de CO2 liquide, comportant une vanne régulatrice pilotée à section variable (5), et à une conduite (19) de soutirage gazeux comportant un détendeur (21) et aboutissant, via un premier clapet anti-retour (24), dans une partie aval (7) de la conduite de distribution (3) en aval de la vanne (5), caractérisé en ce qu'il comporte, en amont du poste d'injection (A), au moins un déverseur (4) dans lequel aboutit la partie aval (7) de la conduite distributrice (3), le déverseur (4) étant du type à membrane (12) portant un obturateur (16) coopérant avec un siège (17) d'éjection de sortie de CO2, la membrane étant sollicitée dans le sens de fermeture du clapet par un ressort (13) réglable (en 14) taré de façon que l'obturateur (16) ne s'ouvre que lorsque la pression du CO2 dans la partie aval (7) de la conduite distributrice (3) est supérieure à une pression (PI) supérieure à la pression (PT) du point triple du CO2 et en ce que la conduite (19) de soutirage gazeux débouche également, via un second clapet anti-retour (24), dans une partie amont (6) de la conduite distributrice (3), en amont (6) de la vanne régulatrice (5).
- Dispositif selon la revendication 2 caractérisé en ce qu'un tuyau (25) ayant sensiblement le même diamètre intérieur que le siège de sortie (18) du déverseur s'étend de ce siège jusqu'au point d'injection du CO2 dans le poste d'injection.
- Dispositif selon la revendication 3, caractérisé en ce que le point d'injection est constitué par un venturi (27) disposé dans une canalisation d'eau résiduaire (26).
- Dispositif selon l'une des revendications 2 ou 3 caractérisé en ce que la partie aval (7) de la conduite distributrice (3) comporte au moins deux embranchements (7A, 7B, 7C) aboutissant chacun à un déverseur à membrane (4A, 4B, 4C).
- Dispositif selon la revendication 5, caractérisé en ce qu'au moins un (4A) des déverseurs (4A-4C) est réglé à une pression d'ouverture (Pl.A) plus faible que le ou les autres déverseurs.
- Tunnel de refroidissement de produits alimentaires (28), caractérisé en ce qu'il est alimenté en CO2 par un dispositif selon l'une des revendications 2 à 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89403619T ATE100921T1 (de) | 1988-12-28 | 1989-12-22 | Verfahren und vorrichtung zur mengenstromregelung von fluessigen co2 und deren anwendung fuer einen kuehltunnel. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8817305A FR2641854B1 (fr) | 1988-12-28 | 1988-12-28 | Procede et dispositif de regulation d'un debit de co2 liquide, et application a un tunnel de refroidissement |
FR8817305 | 1988-12-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0376823A1 EP0376823A1 (fr) | 1990-07-04 |
EP0376823B1 EP0376823B1 (fr) | 1994-01-26 |
EP0376823B2 true EP0376823B2 (fr) | 2001-04-11 |
Family
ID=9373521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89403619A Expired - Lifetime EP0376823B2 (fr) | 1988-12-28 | 1989-12-22 | Procédé et dispositif de régulation d'un débit de CO2 liquide, et application à un tunnel de refroidissement |
Country Status (8)
Country | Link |
---|---|
US (1) | US5040374A (fr) |
EP (1) | EP0376823B2 (fr) |
AT (1) | ATE100921T1 (fr) |
AU (1) | AU629584B2 (fr) |
CA (1) | CA2006789C (fr) |
DE (1) | DE68912755T3 (fr) |
ES (1) | ES2048312T5 (fr) |
FR (1) | FR2641854B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2179782A1 (fr) | 2008-10-22 | 2010-04-28 | Messer France S.A.S. | Agencement d'introduction de dioxyde de carbone liquide dans un milieu |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5267446A (en) * | 1992-11-27 | 1993-12-07 | Thermo King Corp. | Air conditioning and refrigeration systems utilizing a cryogen |
US5285644A (en) * | 1992-11-27 | 1994-02-15 | Thermo King Corporation | Air conditioning and refrigeration apparatus utilizing a cryogen |
US5259198A (en) * | 1992-11-27 | 1993-11-09 | Thermo King Corporation | Air conditioning and refrigeration systems utilizing a cryogen |
US5320167A (en) * | 1992-11-27 | 1994-06-14 | Thermo King Corporation | Air conditioning and refrigeration systems utilizing a cryogen and heat pipes |
US5315840A (en) * | 1992-11-27 | 1994-05-31 | Thermo King Corporation | Air conditioning and refrigeration methods and apparatus utilizing a cryogen |
US5305825A (en) * | 1992-11-27 | 1994-04-26 | Thermo King Corporation | Air conditioning and refrigeration apparatus utilizing a cryogen |
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US5363658A (en) * | 1993-07-09 | 1994-11-15 | The Boc Group, Inc. | Apparatus and process for chilling food products |
US5365744A (en) * | 1993-11-08 | 1994-11-22 | Thermo King Corporation | Air conditioning and refrigeration systems utilizing a cryogen |
FR2734624B1 (fr) * | 1995-05-24 | 1997-07-04 | Carboxyque Francaise | Dispositif d'injection de liquide sous pression dans une enceinte |
DE19621835A1 (de) * | 1996-05-31 | 1997-12-04 | Aga Ab | Expansionsdüse und Verfahren zur Erzeugung von Kohlendioxidschnee |
US5813237A (en) * | 1997-06-27 | 1998-09-29 | The Boc Group, Inc. | Cryogenic apparatus and method for spraying a cryogen incorporating generation of two phase flow |
US5868003A (en) * | 1997-07-14 | 1999-02-09 | Praxair Technology, Inc. | Apparatus for producing fine snow particles from a flow liquid carbon dioxide |
US5916246A (en) * | 1997-10-23 | 1999-06-29 | Thermo King Corporation | System and method for transferring liquid carbon dioxide from a high pressure storage tank to a lower pressure transportable tank |
FR2787862B1 (fr) * | 1998-12-29 | 2001-01-26 | Carboxyque Francaise | Procede et dispositif d'injection regulee de dioxyde de carbone liquide dans un liquide sous pression |
US6751966B2 (en) * | 2001-05-25 | 2004-06-22 | Thermo King Corporation | Hybrid temperature control system |
US6609382B2 (en) * | 2001-06-04 | 2003-08-26 | Thermo King Corporation | Control method for a self-powered cryogen based refrigeration system |
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US6895764B2 (en) * | 2003-05-02 | 2005-05-24 | Thermo King Corporation | Environmentally friendly method and apparatus for cooling a temperature controlled space |
FR2903482B1 (fr) | 2006-07-10 | 2008-08-22 | L'air Liquide | Systeme d'injection de fluide cryogenique permettant le traitement de produits en vrac |
ES2510290B2 (es) | 2013-03-20 | 2015-04-30 | Emilio PALOMO PINTO | Sistema de refrigeración autónomo, portátil y autorefrigerante, basado en la utilización de un depósito estanco, conteniente de un gas licuado a presión, empleado como vaporizador, como consecuencia de la evaporación controlada de dicho GLP |
US10512278B2 (en) | 2015-04-24 | 2019-12-24 | Messer Industries Usa, Inc. | Inline mixing injector for liquid products |
US20170038117A1 (en) * | 2015-08-03 | 2017-02-09 | Michael D. Newman | Pulsed liquid-gas entrained cryogen flow generator |
WO2021121652A1 (fr) | 2019-12-18 | 2021-06-24 | Linde Gmbh | Procédé et agencement pour l'introduction de gaz dans un milieu |
CN111254858B (zh) * | 2020-03-06 | 2021-09-21 | 西南交通大学 | 一种液态二氧化碳清洗机和清洗方法 |
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GB351839A (fr) * | 1929-09-23 | 1931-07-02 | Hugo Mestern | |
GB807088A (en) * | 1954-06-09 | 1959-01-07 | Pyrene Co Ltd | Improvements in valves for controlling the discharge of gas stored in the liquid state |
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US3661483A (en) * | 1969-08-08 | 1972-05-09 | Robert N Bose | Apparatus for controlling the flow of liquid |
US3708995A (en) * | 1971-03-08 | 1973-01-09 | D Berg | Carbon dioxide food freezing method and apparatus |
FR2142309A5 (en) * | 1971-06-18 | 1973-01-26 | Mille Gaston | Cryogenic liq spray - of carbon dioxide eliminates snow formation |
FR2368665A1 (fr) * | 1976-10-25 | 1978-05-19 | Carboxyque Francaise | Appareillage de fourniture de dioxyde de carbone ou d'hemioxyde d'azote liquides sous pression |
-
1988
- 1988-12-28 FR FR8817305A patent/FR2641854B1/fr not_active Expired - Fee Related
-
1989
- 1989-12-22 DE DE68912755T patent/DE68912755T3/de not_active Expired - Fee Related
- 1989-12-22 ES ES89403619T patent/ES2048312T5/es not_active Expired - Lifetime
- 1989-12-22 EP EP89403619A patent/EP0376823B2/fr not_active Expired - Lifetime
- 1989-12-22 AT AT89403619T patent/ATE100921T1/de not_active IP Right Cessation
- 1989-12-27 US US07/456,868 patent/US5040374A/en not_active Expired - Fee Related
- 1989-12-28 CA CA002006789A patent/CA2006789C/fr not_active Expired - Fee Related
- 1989-12-28 AU AU47328/89A patent/AU629584B2/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2179782A1 (fr) | 2008-10-22 | 2010-04-28 | Messer France S.A.S. | Agencement d'introduction de dioxyde de carbone liquide dans un milieu |
DE102008052802A1 (de) | 2008-10-22 | 2010-04-29 | Messer France S.A.S | Anordnung zum Eintragen von flüssigem Kohlendioxid in ein Medium |
Also Published As
Publication number | Publication date |
---|---|
EP0376823B1 (fr) | 1994-01-26 |
ES2048312T3 (es) | 1994-03-16 |
ATE100921T1 (de) | 1994-02-15 |
ES2048312T5 (es) | 2001-05-16 |
DE68912755T3 (de) | 2001-08-02 |
FR2641854A1 (fr) | 1990-07-20 |
CA2006789A1 (fr) | 1990-06-28 |
US5040374A (en) | 1991-08-20 |
CA2006789C (fr) | 1994-10-25 |
AU4732889A (en) | 1990-07-05 |
EP0376823A1 (fr) | 1990-07-04 |
DE68912755D1 (de) | 1994-03-10 |
AU629584B2 (en) | 1992-10-08 |
DE68912755T2 (de) | 1994-05-11 |
FR2641854B1 (fr) | 1994-01-14 |
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