EP2464563A1 - Installation comprenant un réservoir servant à stocker un gaz naturel liquéfié (lng) en tant que carburant marin - Google Patents

Installation comprenant un réservoir servant à stocker un gaz naturel liquéfié (lng) en tant que carburant marin

Info

Publication number
EP2464563A1
EP2464563A1 EP10808415A EP10808415A EP2464563A1 EP 2464563 A1 EP2464563 A1 EP 2464563A1 EP 10808415 A EP10808415 A EP 10808415A EP 10808415 A EP10808415 A EP 10808415A EP 2464563 A1 EP2464563 A1 EP 2464563A1
Authority
EP
European Patent Office
Prior art keywords
tank
lng
gas
cooling
loop
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Withdrawn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
EP10808415A
Other languages
German (de)
English (en)
Other versions
EP2464563A4 (fr
Inventor
Jørn. M. JONAS
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.)
Rondane Teknologi AS
Original Assignee
Rondane Teknologi AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rondane Teknologi AS filed Critical Rondane Teknologi AS
Publication of EP2464563A1 publication Critical patent/EP2464563A1/fr
Publication of EP2464563A4 publication Critical patent/EP2464563A4/fr
Withdrawn legal-status Critical Current

Links

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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • 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
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2223/0169—Liquefied gas, e.g. LPG, GPL subcooled
    • 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
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point 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
    • 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
    • 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
    • F17C2225/0169—Liquefied gas, e.g. LPG, GPL subcooled
    • 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
    • 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
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
    • 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
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0323—Heat exchange with the fluid by heating using another fluid in a closed loop
    • 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
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0327—Heat exchange with the fluid by heating with recovery of heat
    • 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
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0355—Heat exchange with the fluid by cooling using another fluid in a closed loop
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
    • F17C2227/0383—Localisation of heat exchange in or on a vessel in wall contact outside the vessel
    • F17C2227/0386—Localisation of heat exchange in or on a vessel in wall contact outside the vessel with a jacket
    • 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
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/039—Localisation of heat exchange separate on the pipes
    • 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
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • 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
    • F17C2260/021—Avoiding over pressurising
    • 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
    • F17C2260/025—Reducing transfer time
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/033—Treating the boil-off by recovery with cooling
    • F17C2265/035—Treating the boil-off by recovery with cooling with subcooling the liquid phase
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/05—Regasification
    • 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
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Definitions

  • a plant comprising a tank for storing of liquid natural gas (LNG) as marine fuel.
  • LNG liquid natural gas
  • the present invention relates to a plant comprising a tank for storing of liquid natural gas (LNG) as marine fuel for use in a propulsion engine or another consumer in a ship, and a heater for vapourizing of LNG discharged from the tank for such use.
  • LNG liquid natural gas
  • Liquid natural gas marine fuel is stored in very cold, boiling (saturated) condition. It is not possible to keep natural gas in liquid form only by pressure. Some of the stored, cold LNG is continuously transformed to vapour inside the tank. This vapour is called boil-off gas. Boil-off gas is created because LNG is colder than ambient air and thus there will always be a heat transfer into the LNG which vapourizes LNG to gas.
  • the LNG is sent to the consumer either by tank pressure or by a pump inside the tank.
  • Natural gas is supplied to the gas consumer in gaseous form. LNG fuel must thus be vapourized before being sent to the consumer.
  • the vapourization is achieved by a heating medium outside the tank. Variations in gas consume is adjusted by adjusting heat input outside the tank.
  • WO 2009/063127 describes a heat transfer process by circulation of LNG, using LNG as cooling medium at a temperature corresponding to the LNG temperature in the tank.
  • the LNG cooling medium is circulated inside the bunkering piping in which the LNG flows during filling of the tank.
  • a flammable cooling medium is used, namely LNG.
  • the content in the tank is used as cooling medium, namely LNG.
  • Flammable gas represents a hazard in respect of explosion in certain operational conditions.
  • WO 2009/063127 hence describes an arrangement (purge connection) for removal of the flammable cooling medium; cf. page 3, lines 27, 28, 29 (last chapter on page 3) of page 7 lines 22, 23, 24 (second last chapter page 7).
  • JP 405248599 A describes a process that obtains energy recovery as available cooling capacity and as power from a turbine by an arrangement of cooling and heating needs in a LNG tank storage, gasification and supply system.
  • the main function of the system in which the invention is to be used is to supply gas to consumers on shore by evaporating LNG, and this function will under all operational conditions be possible by sufficient supply of heat in an evaporator.
  • the present invention is a plant adapted to cool down certain parts of an LNG tank filling, storage and gasification system.
  • the main function of the system in which the invention is to be used is to supply gas fuel to consumers on a ship and the invention is a system that shall improve the operational conditions of the gas storage and supply system.
  • JP 405248599 A mainly describes an energy recovery system, while the present invention is a system for which the function is to operate a LNG fuel storage system in a best possible way.
  • Cooling down of the bunkering pipe for more efficient operation is the primary function of the present invention.
  • the fact that the cooling medium is non flammable and as such acts as a protecting gas against explosion hazard outside the bunkering pipe is a main difference from the teaching of WO 2009/063127.
  • Cooling process details e.g. how to pressurize or expand the cooling medium, is not described.
  • the expansion process could be Joule Thompson expansion or expansion by turbo expander.
  • the piping for filling the tank is not cooled.
  • the tank filling piping is not exposed to cold gas during operation of the ship and has ambient temperature.
  • the liquid level in a LNG fuel tank is in general low before bunkering and the upper part of the tank will hence be warmer than the lower part of the tank which contains LNG.
  • the warmer tank filling piping and warmer upper tank volume will cause flashing of gas when the tank filling starts.
  • the flash gases will cause pressure pulses and prevent free flow of LNG into the tank and will thus cause longer time for filling the tank than if all piping and the tank were colder.
  • the entire tank system should be as cold as the LNG at bottom of the tank or colder.
  • an additional system to handle boil-off gas is required and one way to handle the boil-off gas is to cool the inner of the tank to compensate for the heat transfer into the tank.
  • a closed cooling loop is provided for cooling of the tank filling piping before filling of LNG in the tank and preferably also during filling of LNG in the tank.
  • the cooling loop contains a non flammable gas, such as nitrogen,
  • the loop surrounds the filling piping or a part thereof and causes cooling of the piping prior to filling of the tank and possibly also during filling of the tank.
  • the loop may also have a branch in the tank.
  • the temperature of the gas in the cooling loop is lower than the temperature of the LNG in the tank due to adiabatic expansion after heat exchanging with vapourizing LNG to be sent to the consumer.
  • the loop leads back to the suction side of the compressing device.
  • the cooling loop can be used to cool the filling piping, the tank space above the LNG level and the LNG in the bottom of the tank.
  • FIG. 1 schematically shows a plant according to the invention.
  • a closed heat exchanging loop 1 containing a gas in gaseous form is provided, preferably using nitrogen gas as heat exchanging medium.
  • the gas in the loop 1 is pressurized in a compressing device 2. After compression the LNG coming from the tank 7 in a pipe 8 is heat exchanged with the gas in the loop 1 in a heat exchanger 3 and the gas in the loop 1 is cooled. Then the gas in the loop 1 is sent through a pressure reduction device 4 and is then sent through one or more heat exchangers and back to the suction side of the compressing device 2.
  • the heat exchangers may comprise a jacket 5a surrounding tank filling piping and ribbed piping 5b inside the tank 7.
  • the heat exchanger 6 is for vapourizing LNG for use as fuel.
  • the LNG coming from the tank is heated by exchanging heat with the gas in the loop 1 before coming into the heat exchanger 6.
  • an internal cooling loop is provided.
  • the cooling capacity of the cooling loop is proportional with the rate of LNG that is to be vapourized for
  • the temperature of the cooling loop is made lower than LNG in the tank by adiabatic expansion after heat exchanging with vapourizing LNG.
  • the present invention can be used to cool down tank filling piping 9, the tank space above LNG level and to sub cooling of LNG in the bottom of the tank.
  • the purpose is to reduce or avoid flash gases which are causing pressure pulses during tank filling and thus achieve free flow of LNG into the tank.
  • Additional use of the present invention will be to utilize the cooling capacity to reduce or eliminate boil-off gas from LNG fuel tanks with max pressure of 0.7 bar g or lower, however preferably with a separation process that enables to release non condensable N 2 gas out from the tank.
  • This separation process can be achieved with known separation methods utilizing the possibility for very low temperature in the cooling loop after the adiabatic expansion through the pressure reduction device 4.

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

Abstract

L'invention porte sur une installation comprenant un réservoir (7) destiné à stocker du gaz naturel liquéfié (LNG) en tant que carburant marin destiné à être utilisé dans un moteur de propulsion ou dans un autre consommateur porté par un navire, et un réchauffeur (6) destiné à vaporiser le LNG déchargé par le réservoir (7) pour cette utilisation. Pour refroidir la canalisation de remplissage du réservoir (9), l'installation comprend une boucle fermée d'échange de chaleur (1) qui contient un gaz non inflammable sous la forme gazeuse en tant que milieu d'échange de chaleur, un dispositif compresseur (2) destiné à comprimer le gaz, un échangeur de chaleur (3) destiné à refroidir le gaz comprimé par utilisation du LNG déchargé par le réservoir, un dispositif détendeur (4) pour le gaz et un ou plusieurs échangeurs de chaleur (5a, 5b) destinés à refroidir la conduite de remplissage du réservoir (9). La boucle (1) peut aussi être utilisée pour refroidir le LNG qui est chargé dans le réservoir (7) et pour refroidir l'intérieur du réservoir.
EP10808415.3A 2009-08-12 2010-08-06 Installation comprenant un réservoir servant à stocker un gaz naturel liquéfié (lng) en tant que carburant marin Withdrawn EP2464563A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20092829A NO336683B1 (no) 2009-08-12 2009-08-12 Anlegg som omfatter en tank for lagring av flytende naturgass
PCT/NO2010/000299 WO2011019284A1 (fr) 2009-08-12 2010-08-06 Installation comprenant un réservoir servant à stocker un gaz naturel liquéfié (lng) en tant que carburant marin

Publications (2)

Publication Number Publication Date
EP2464563A1 true EP2464563A1 (fr) 2012-06-20
EP2464563A4 EP2464563A4 (fr) 2017-11-29

Family

ID=43586301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10808415.3A Withdrawn EP2464563A4 (fr) 2009-08-12 2010-08-06 Installation comprenant un réservoir servant à stocker un gaz naturel liquéfié (lng) en tant que carburant marin

Country Status (3)

Country Link
EP (1) EP2464563A4 (fr)
NO (1) NO336683B1 (fr)
WO (1) WO2011019284A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11698169B2 (en) 2016-12-23 2023-07-11 Shell Usa, Inc. Vessel for the transport of liquefied gas and method of operating the vessel

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN106523194A (zh) * 2016-10-12 2017-03-22 成都九门科技有限公司 一种发动机系统及控制方法
KR102450533B1 (ko) * 2018-01-25 2022-10-05 한국조선해양 주식회사 휘발성 유기화합물 처리 시스템 및 선박
NO346152B1 (en) 2020-09-21 2022-03-28 Rondane Teknologi As A system for conditioning of LNG
CN113357537B (zh) * 2021-07-05 2023-02-21 江南造船(集团)有限责任公司 一种船用lng加注系统及操作方法

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US2538664A (en) * 1946-05-24 1951-01-16 Phillips Petroleum Co Method and apparatus for shipping and storing liquefied gases
JPH0711320B2 (ja) * 1992-03-03 1995-02-08 大阪瓦斯株式会社 液化天然ガス貯蔵システム
KR100804953B1 (ko) * 2007-02-13 2008-02-20 대우조선해양 주식회사 냉동 부하 가변 운전이 가능한 증발가스 재액화 장치 및방법
FI122608B (fi) * 2007-11-12 2012-04-13 Waertsilae Finland Oy Menetelmä LNG-käyttöisen vesialuksen käyttämiseksi ja LNG-käyttöisen vesialuksen käyttöjärjestelmä

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11698169B2 (en) 2016-12-23 2023-07-11 Shell Usa, Inc. Vessel for the transport of liquefied gas and method of operating the vessel

Also Published As

Publication number Publication date
NO336683B1 (no) 2015-10-19
EP2464563A4 (fr) 2017-11-29
WO2011019284A1 (fr) 2011-02-17
NO20092829A1 (no) 2011-02-14

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