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EP1776541B1 - Procede et dispositif permettant de remplir un contenant de gaz liquide issu d'un reservoir de stockage - Google Patents

Procede et dispositif permettant de remplir un contenant de gaz liquide issu d'un reservoir de stockage Download PDF

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Publication number
EP1776541B1
EP1776541B1 EP05776200A EP05776200A EP1776541B1 EP 1776541 B1 EP1776541 B1 EP 1776541B1 EP 05776200 A EP05776200 A EP 05776200A EP 05776200 A EP05776200 A EP 05776200A EP 1776541 B1 EP1776541 B1 EP 1776541B1
Authority
EP
European Patent Office
Prior art keywords
gas
container
storage tank
liquid
heat exchanger
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.)
Active
Application number
EP05776200A
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German (de)
English (en)
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EP1776541A1 (fr
Inventor
Patrick Matheoud
Jean-Claude Zimmer
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.)
Messer France SAS
Original Assignee
Messer France SAS
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Filing date
Publication date
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Publication of EP1776541A1 publication Critical patent/EP1776541A1/fr
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Classifications

    • 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • 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
    • 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
    • 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
    • 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
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • 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
    • 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
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0339—Heat exchange with the fluid by cooling using the same fluid
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F17C2227/0374—Localisation of heat exchange in or on a vessel in the liquid
    • 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
    • F17C2227/04—Methods for emptying or filling
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0443—Flow or movement of content
    • 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
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0171—Trucks

Definitions

  • the invention relates to a method and a device for filling a container with liquid gas from a storage container.
  • the refueling of a liquid gas container takes place in such a way that the liquid gas is pumped in liquid form from a storage tank into the container.
  • the gas phases of the liquid gas in the container and in the storage tank are at the same time flow-connected to one another via a separate gas line. In this way, a quantity of gas which corresponds to the volume of the liquid gas supplied to the container reaches the storage tank.
  • a disadvantage of this known filling method is that in the case of contamination of the container to be filled while the gas phase of the storage tank is contaminated. If more containers are filled from this storage tank, it also leads to contamination of these containers. In addition, during a subsequent refueling of the storage tank there is a risk that the main tank in the production site of the liquefied gas is contaminated.
  • a method and a device for filling a container with LPG from a storage tank is known in which the Liquefied gas is transferred in a liquid gas supply line by means of a multi-stage conveyor from the storage tank into the container.
  • Gas phase of the container to be filled is connected to a gas return line, which: opens in the area between two pump stages of the conveyor in the liquid gas inlet from the storage tank.
  • gas in the volume of the liquid gas supplied from the storage tank is taken from the container, liquefied and fed back into the container in liquid form, together with liquid gas from the storage tank. This results in an automatic Druckregutleiter in the container.
  • the gas phases of the container and storage tank are not in fluid communication, thereby precluding cross-contamination.
  • a disadvantage of this method is the high expenditure on equipment and the practical difficulty of adapting the pumping powers of the individual conveyor stages to the respective requirements.
  • the liquefied gas is then fed to an injector, for example a Venturi nozzle, which, in order to avoid cavitation caused by pressure drop, is arranged upstream of the pump in the liquid feed line.
  • an injector for example a Venturi nozzle
  • the liquefied gas flowing out of the heat exchanger is admixed with the liquid gas flowing in the liquid gas feed line.
  • the heat exchanger is according to the teaching of WO / 081963 preferably arranged in the interior of the storage tank; the cooling of the gas taken from the container to be filled thus simultaneously leads to the evaporation of liquid gas in the storage tank and thus to a pressure increase in the storage tank which promotes the filling.
  • a disadvantage of this system is that it usually fails to completely liquefy the gas introduced via the injector. There remains a more or less large part of gaseous substance, which significantly reduces the efficiency of the filling. As a result, the use of relatively strong and therefore more expensive and in use energy-intensive pumps is required. In particular, when used in mobile filling devices, such as road tankers, this leads to a considerably higher cost in the execution of the vehicles.
  • Object of the present invention is therefore to provide a way to fill a container with liquid gas from a storage tank, specify that manages with less equipment and yet reliably prevents cross-contamination between the container and storage tank.
  • a conveyor gas is supplied in the liquid state from a reservoir to the container to be filled and compresses the gas phase present in the container to be filled.
  • the container to be filled gas is removed, which is fed to a heat exchanger and at least largely liquefied.
  • the at least largely liquefied gas is added to the liquid gas from the reservoir suction side to the conveyor and then conveyed together with this in the container.
  • a further embodiment of the invention provides that the differential pressure between the pressure in the container and the pressure of the reservoir is detected directly or indirectly and the liquefied in the heat exchanger gas is supplied only in the presence of a predetermined, minimum differential pressure of the liquid feed line. As a result, the formation of cavitations in the liquid supply is suppressed.
  • the exact level of the minimum differential pressure depends on the choice of equipment used, in particular on the characteristics of the heat exchanger, the capacity of the pump and the ability of the pump to tolerate a certain proportion of gas in the pumped stream without significant drop in pumping power.
  • the minimum differential pressure to be selected for the respective equipment can be determined empirically, for example, before commissioning or delivery of a refueling unit operating according to the invention.
  • the detection of the pressure difference is expediently carried out continuously or at regular time intervals.
  • the detection of the pressure difference or of the pressure can take place in the containers themselves or in the region of the feed and discharge lines or at another point, provided that the measurement can clearly deduce the differential pressure at the blocking valve.
  • a preferred embodiment of the invention makes from the of WO 02/081963 A1 known and proven arrangement use to perform the heat exchanger such that a heat exchange between the gas to be liquefied and the liquefied gas in the reservoir. So it comes in this way to a transfer of heat from the container to the storage tank. The heat released in the condensation of the gas from the container heat is used to vaporize gas in the reservoir and in this way to maintain the gas pressure in the reservoir during the removal of the liquefied gas.
  • a further advantageous embodiment of the invention provides for the gas taken from the container to be filled to be supplied to a heat exchanger compacted. This can be done, for example, by means of a compressor arranged in the gas discharge.
  • the inventive device thus comprises connected to the reservoir and connectable to the container liquid supply line, which is equipped with a conveyor for conveying liquefied gas into the container, and with a connectable to the container gas discharge, which passes through a heat exchanger and on a suction side to the conveyor arranged connection point with the liquid supply is in flow communication.
  • the conveyor transports gas in the liquid state via the liquid supply line from the storage container into the container to be filled.
  • About the gas discharge gas is removed from the container and fed to the heat exchanger. In the heat exchanger, heat is withdrawn from the gas, thereby at least partially liquefying it.
  • the liquefied gas is fed into the liquid feed line.
  • the heat exchanger is expediently designed such that it produces a thermal contact between the gas which has been taken from the container and the gas which is present in the liquid and / or gaseous state in the storage container. Thus, there is a heat transfer from the gas in the storage container the gas from the container to be filled instead.
  • the heat exchanger can be arranged anywhere in the vicinity of the storage tank, a particularly good heat transfer is achieved, however, when the heat exchanger is disposed within the reservoir.
  • a control device in the gas discharge, consisting of a fluidically behind the heat exchanger arranged blocking valve and means for detecting the differential pressure in front of and behind this blocking device, which actuates the blocking valve upon reaching a predetermined pressure condition.
  • a control device is provided in the gas discharge, consisting of a fluidically behind the heat exchanger arranged blocking valve and means for detecting the differential pressure in front of and behind this blocking device, which actuates the blocking valve upon reaching a predetermined pressure condition.
  • Any suitable fitting can be used as a blocking fitting by means of which a pressure difference can be maintained, that is, for example, a throttle, a flap or a valve.
  • a calibrated or calibratable valve which opens or closes at a fixed or individually adjustable value of the differential pressure is particularly preferably used.
  • a further embodiment of the invention provides to arrange a compressor in the gas discharge, preferably in the region between the container to be filled and the heat exchanger.
  • An expedient development of the invention provides to provide a means for preventing the backflow of liquefied gas into the storage tank in the area between the storage tank and the connection point, for example a check valve. In particular, disturbances in the operation so that the risk of cross-contamination is avoided.
  • a yet further advantageous embodiment of the invention provides to provide a multistage pump as a delivery device and to provide the connection point in the liquid feed line between two pump stages.
  • An expedient embodiment of the invention provides that the storage tank and / or the container may be arranged in a mobile supply unit, such as a road tanker or a railroad tank car.
  • Fig. 1 shows a container 1, which is intended for the storage of liquefied petroleum gas, for example carbon dioxide.
  • the liquid gas stored in the container 1 is present both in a liquid phase 2 and in a gas phase 3.
  • the container 1 is further provided in this not interesting and therefore not shown manner with connections for supplying consumers with gas in the liquid or gaseous state.
  • the container 1 is equipped with a respective liquid connection line 4 and with a gas return line 5.
  • the container 1 is supplied with fresh liquefied gas from a storage tank 6.
  • storage tank 6 is part of a refueling system 10, which is mounted, for example, on a mobile tank unit, such as a road tanker or a railroad tank car.
  • the refueling system 10 can also be a fixed installation constructed approximately in the vicinity of a production facility for the liquefied gas, which is intended to fill a mobile container or refueling installation mounted on a road tanker or a railroad tank car;
  • the container 1 can also be a storage container for supplying liquid gas to further containers or customer tanks, which in turn is part of a refueling system of the type described here.
  • the refueling system 10 has the facilities described below.
  • a liquefied gas line 7 is arranged on the storage tank 6. As in the container 1, the liquid gas is also present in the storage tank 6 in a liquid phase 8 and a gas phase 9.
  • the liquefied gas line 7 opens into the storage tank 6 in a lower region and therefore establishes a flow connection with the liquid phase 8 of the liquefied gas stored in the storage tank 6.
  • the liquefied gas line 7 opens at its end facing away from the storage tank 7 end in a connecting piece 11, by means of which a releasable connection with a corresponding connection piece 12 on the liquid connection line 4 can be produced.
  • a gas line 13 is further provided, which is also connectable to a connector 14 with a connector 15 of the gas return line 5.
  • a pump 16 is arranged, which is intended for the promotion of liquid gas (in the liquid state) from the storage tank 6 into the container 1.
  • a flow meter 20 is provided downstream of the pump 16.
  • the gas line 13 opens at its end opposite the connection 14 into a heat exchanger 19.
  • the heat exchanger 19 establishes a thermal contact between the gas flowing from the gas line 13 into the heat exchanger 19 and the liquid gas inside the storage tank 6 and is arranged in the interior of the storage tank 6 in the exemplary embodiment, in such a way that the supply of the gas in the Heat exchanger 19 from above, that is through the gas phase 9 through and the heat exchange surfaces have a good thermal contact with the liquid phase 8.
  • the now cooled and at least partially liquefied gas passes into a conduit 17 which is connected to the liquid line 7 at a connection point 18 arranged on the suction side to the conveyor 16.
  • the gas flowing in from the line 17 mixes in the liquefied gas line 7 with the liquid gas withdrawn from the storage tank 6 and is then fed together with the liquid phase 2 of the gas in the container 1.
  • the connecting pieces 11 and 12 are connected to one another in order to establish a flow connection between the storage tank 6 and the container 1 to be filled.
  • the connecting pieces 14 and 15 are connected to each other.
  • liquid gas is pressed in the liquid state into the container 1, whereby the pressure in the container 1 increases.
  • Gas flows in the gaseous state from the gas phase 3 of the liquid gas present in the container 1 via the gas lines 5 and 13 in the heat exchanger 19 a.
  • the introduced in this heat exchange in the storage tank 6 heat leads to the evaporation of a portion of the liquid phase 8 and helps to maintain the pressure in the interior of the storage tank 6 despite the ongoing removal of liquid gas upright or even increase.
  • a multi-stage pump provided that the connection point 18 is arranged between two pump stages.
  • FIG. 2 differs from the previously described only by an additional control device 21 in the line 17, fluidly arranged in front of the connection point 18.
  • an additional control device 21 in the line 17, fluidly arranged in front of the connection point 18.
  • the control device 21 comprises a blocking device, such as a valve, a flap or a throttle, by means of which the flow through the line 17 can be influenced.
  • the control device 21 has a differential pressure measuring device, by means of which the pressure difference can be determined in terms of flow before and behind the blocking valve, and on the blocking valve in Dependent on the pressure difference acts, so for example at a certain value of the pressure difference, the blocking valve opens or closes.
  • the control device 21 can be realized in the simplest case: for example, by a calibrated or calibratable pressure valve, which releases the line 17 above a certain pressure difference, but including it.
  • the detection of the pressure difference can also take place by detecting the differential pressure between the lines 7 and 13 or the containers 1 and 6, or indirectly, by measuring the respective absolute pressures and calculating the difference thereof.
  • the control device 21 ensures that only above a certain pressure difference before and after the control device 21, a flow of the liquefied gas from the line 17 into the liquefied gas line 7 takes place;
  • the pressure upstream of the control device 21 is, for example, 1.5 to 2 bar greater than the pressure downstream of the control device 21 cavitations in the liquefied gas line 7, through which the performance of the pump 16 can be reduced, are thereby reduced so far that the Promotion of the liquefied gas is not affected by the pump 16.
  • the control device can also be set to a lower pressure difference value or close the line 17 even if a certain overpressure value is exceeded in order to prevent cross contamination in the reservoir 6.
  • the value for the minimum pressure difference depends on various sizes of equipment used, in particular the characteristics of the heat exchanger, the flow rate to be handled by the pump and the ability of the pump to tolerate some gas in the delivered stream without a significant reduction in flow rate.
  • the device according to the invention With the device according to the invention that is taken from the container 1. Gas in a circuit returned to the container 1. Thus, the container 1 can be filled without the risk of decontamination of the liquefied gas in the reservoir 6 is.
  • the device according to the invention is suitable for filling containers with any liquid gases or gas mixtures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Basic Packing Technique (AREA)

Claims (13)

  1. Procédé de remplissage d'un contenant (1) avec du gaz liquéfié provenant un réservoir (6), dans lequel
    du gaz liquéfié est prélevé du réservoir (6) et est acheminé au contenant (1) au moyen d'un dispositif de transport (16) par le biais d'une conduite d'amenée de fluide (7) et le gaz est comprimé dans le contenant (1) à remplir,
    du gaz sous forme gazeuse (3) est prélevé du contenant à remplir (1) et est liquéfié au moins en partie par refroidissement dans un échangeur de chaleur (19), et
    le gaz au moins en partie liquéfié est introduit dans la conduite d'amenée de fluide (7) du côté de l'aspiration par rapport au dispositif de transport (16).
  2. Procédé selon la revendication 1, caractérisé en ce que la pression différentielle entre la pression dans le contenant (1) et la pression du réservoir (6) est détectée directement ou indirectement et le gaz liquéfié dans l'échangeur de chaleur est seulement acheminé à la conduite d'amenée de fluide (7) en présence d'une pression différentielle minimale prédéfinie.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la liquéfaction du gaz s'effectue dans l'échangeur de chaleur (19) par échange thermique avec le gaz liquide dans le réservoir (6).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le gaz provenant du contenant à remplir (1) est comprimé avant son alimentation à l'échangeur de chaleur (19).
  5. Dispositif pour remplir un contenant (1) avec du gaz liquide provenant d'un réservoir (6), comprenant une conduite d'amenée de fluide (7) raccordée au réservoir (6) et pouvant être connectée au contenant (1), qui est munie d'un dispositif de transport (16) pour transporter le gaz liquide dans le contenant (1), et comprenant une conduite d'évacuation de gaz (13, 17) pouvant être connectée au contenant (1), qui traverse un échangeur de chaleur (19) et qui est en liaison fluidique avec la conduite d'amenée de fluide au niveau d'un point de connexion (18) disposé du côté de l'aspiration par rapport au dispositif de transport.
  6. Dispositif selon la revendication 5, caractérisé en ce que l'échangeur de chaleur est réalisé de telle sorte qu'il crée un contact thermique entre le gaz prélevé du contenant (1) et le gaz dans le réservoir.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'échangeur de chaleur (19) est disposé à l'intérieur du réservoir (6).
  8. Dispositif selon l'une quelconque des revendications 5 à 7,
    caractérisé par un dispositif de commande (21) qui comprend un robinet d'arrêt disposé dans la conduite d'évacuation de gaz (17) en aval de l'échangeur de chaleur (19) ainsi qu'un dispositif pour détecter la pression différentielle avant et après le robinet d'arrêt.
  9. Dispositif selon la revendication 8, caractérisé en ce que l'on prévoit en tant que dispositif de commande (21) une soupape calibrée ou calibrable qui ouvre la conduite d'évacuation de gaz (17) une fois qu'une pression différentielle prédéfinie ou ajustable est atteinte.
  10. Dispositif selon l'une quelconque des revendications 5 à 9, caractérisé en ce que l'on dispose dans la conduite d'évacuation de gaz (13) un dispositif pour comprimer le gaz, comme par exemple un compresseur (22).
  11. Dispositif selon l'une quelconque des revendications 5 à 10, caractérisé en ce que l'on prévoit dans la conduite d'amenée de fluide (7), entre le réservoir (6) et le point de connexion (18), un dispositif (23) pour empêcher le retour de gaz liquide dans le réservoir (6).
  12. Dispositif selon l'une quelconque des revendications 5 à 11, caractérisé en ce que l'on prévoit comme dispositif de transport (16) une pompe à plusieurs étages, et le point de connexion (18) est disposé dans la conduite d'amenée de fluide (7) entre deux étages de la pompe.
  13. Dispositif selon l'une quelconque des revendications 5 à 12, caractérisé en ce que le réservoir (6) et/ou le contenant (1) sont disposés dans une unité d'alimentation mobile, comme par exemple un camion-citerne.
EP05776200A 2004-08-07 2005-07-19 Procede et dispositif permettant de remplir un contenant de gaz liquide issu d'un reservoir de stockage Active EP1776541B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004038460A DE102004038460A1 (de) 2004-08-07 2004-08-07 Verfahren und Vorrichtung zum Befüllen eines Behälters mit Flüssiggas aus einem Vorratstank
PCT/EP2005/053485 WO2006015927A1 (fr) 2004-08-07 2005-07-19 Procede et dispositif permettant de remplir un contenant de gaz liquide issu d'un reservoir de stockage

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EP1776541A1 EP1776541A1 (fr) 2007-04-25
EP1776541B1 true EP1776541B1 (fr) 2008-01-16

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US (1) US7617848B2 (fr)
EP (1) EP1776541B1 (fr)
AT (1) ATE384224T1 (fr)
DE (2) DE102004038460A1 (fr)
WO (1) WO2006015927A1 (fr)

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Publication number Publication date
ATE384224T1 (de) 2008-02-15
US20080078188A1 (en) 2008-04-03
DE502005002586D1 (de) 2008-03-06
US7617848B2 (en) 2009-11-17
DE102004038460A1 (de) 2006-03-16
WO2006015927A1 (fr) 2006-02-16
EP1776541A1 (fr) 2007-04-25

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