EP3514466A2 - Appareil de reliquéfaction de gaz d'évaporation et système d'alimentation en gaz naturel liquéfié muni d'un tel appareil - Google Patents

Appareil de reliquéfaction de gaz d'évaporation et système d'alimentation en gaz naturel liquéfié muni d'un tel appareil Download PDF

Info

Publication number
EP3514466A2
EP3514466A2 EP19150672.4A EP19150672A EP3514466A2 EP 3514466 A2 EP3514466 A2 EP 3514466A2 EP 19150672 A EP19150672 A EP 19150672A EP 3514466 A2 EP3514466 A2 EP 3514466A2
Authority
EP
European Patent Office
Prior art keywords
bog
line
heat exchanger
lng
passes
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Withdrawn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
EP19150672.4A
Other languages
German (de)
English (en)
Other versions
EP3514466A3 (fr
Inventor
Oumar KHAN
Kenji Hirose
Maxime RANCHOUX
Loic Joly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP3514466A2 publication Critical patent/EP3514466A2/fr
Publication of EP3514466A3 publication Critical patent/EP3514466A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F25J1/0025—Boil-off gases "BOG" from storages
    • 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
    • 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
    • F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0035—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work
    • F25J1/0037—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work of a return stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0285—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings
    • F25J1/0288—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings using work extraction by mechanical coupling of compression and expansion of the refrigerant, so-called companders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0292—Refrigerant compression by cold or cryogenic suction of the refrigerant 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
    • 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
    • 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
    • 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
    • F17C2265/034—Treating the boil-off by recovery with cooling with condensing the gas phase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/62—Liquefied natural gas [LNG]; Natural gas liquids [NGL]; Liquefied petroleum gas [LPG]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/02—Recycle of a stream in general, e.g. a by-pass stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/04—Internal refrigeration with work-producing gas expansion loop
    • F25J2270/06—Internal refrigeration with work-producing gas expansion loop with multiple gas expansion loops

Definitions

  • the present invention relates to an apparatus that reliquefies BOG (Boil off Gas) generated from an LNG tank.
  • BOG Bit off Gas
  • an LNG tank In an LNG value chain, an LNG tank is required in every situation such as a liquefied natural gas (LNG) liquefying base, a receiving base, and a bunkering base.
  • LNG liquefied natural gas
  • BOG boil off gas
  • Non Patent Literature 1 discloses a BOG recycling process in an LNG liquefying base.
  • BOG is compressed by a compressor, and BOG is utilized as fuel gas for a natural gas refining apparatus.
  • Patent Literature 1 discloses a method for compressing BOG in an LNG receiving base by a multistage compressor, and using the compressed BOG as fuel for power generation.
  • Patent Literature 2 discloses a method for reliquefying BOG compressed by a compressor, by a refrigerating cycle using nitrogen as a refrigerant.
  • Patent Literature 3 discloses a process of an LNG liquefying cycle including an expander/booster, a BOG compressor (compressor), a heat exchanger, and a separator. An object of this process is to supply the compressed BOG to a motor of a ship.
  • the processing of BOG in the conventional technologies described above is either a method for utilizing BOG as fuel or the like, or a method for reliquefying and recovering BOG in a tank.
  • Non Patent Literature 1 and Patent Literature 1 A problem in the conventional technologies of the above Non Patent Literature 1 and Patent Literature 1 is that for example, in a case where there is no demand of fuel for power generation or the like, BOG cannot be pressure-fed by a compressor, and as a result, the BOG has to be discharged to atmosphere.
  • Patent Literature 2 A problem in Patent Literature 2 is high cost derived from a fact that a large number of apparatuses such as a BOG compressor and a nitrogen refrigerating cycle are needed.
  • Patent Literature 3 A problem in Patent Literature 3 is a process of supplying BOG to the motor of the ship, and a low efficiency process because optimum operation of the compressor cannot be performed, and an extra cooler is not provided. That is, a temperature at the time of manufacturing of liquid by decompression (flash) of high pressure BOG is high, and therefore a gasified amount at the time of decompression is increased, and an amount of BOG recycled in a system is increased. Therefore, a large amount of energy of compression is needed.
  • An object of the present invention is to provide a boil off gas reliquefying apparatus that reliquefies boil off gas (BOG) generated from a liquefied natural gas (LNG) tank, that is applicable to new and existing liquefied natural gas (LNG) tanks, and that attains an extremely inexpensive investment cost. Additionally, another object of the present invention is to provide an LNG supply system including the boil off gas reliquefying apparatus.
  • BOG boil off gas
  • the present invention is a boil off gas reliquefying apparatus for reliquefying BOG generated from an LNG tank, and is coupled to an LNG supply system.
  • a first LNG supply system includes:
  • a compression process line for performing at least one compression process on the BOG sent from the LNG tank may have the first pressure BOG line (L1), the second pressure BOG line (L2), and the third pressure BOG line (L3).
  • the above first boil off gas reliquefying apparatus includes:
  • the first boil off gas reliquefying apparatus may further have at least one expansion valve (15) in the second return line (L13) at an upstream position with respect to the second heat exchanger (11), or upstream with respect to a branch point at which the second return line (L13) is branched from the first line (L10) and downstream with respect to the second heat exchanger (11), in the first line (L10).
  • a second LNG supply system is similar to the first LNG supply system.
  • the second boil off gas reliquefying apparatus includes:
  • An LNG supply system having a third boil off gas reliquefying apparatus includes:
  • the LNG supply system may further have at least one expansion valve (15) in the second return line (L13) at an upstream position with respect to the second heat exchanger (11), or upstream with respect to a branch point at which the second return line (L13) is branched from the first line (L10) and downstream with respect to the second heat exchanger (11), in the first line (L10).
  • BOG compressed in order to perform recycling, power generation, or natural gas pipeline pressure-feeding can be directly reliquefied by a liquefaction cycle.
  • a BOG compressor used for recycling, power generation, or natural gas pipeline supply of BOG can also be used for a BOG reliquefaction cycle. That is, even in a case where there is no supply destination of BOG, reliquefaction of BOG is enabled by utilization of the compressor, exhaust of the BOG to atmosphere is eliminated. Additionally, because of a simple apparatus configuration, an apparatus can be introduced at a low cost.
  • the present invention is applicable to not only a new LNG facility but also remodeling utilizing a BOG compressor of an existing LNG facility, and has extremely high marketability. Compared to a conventional case where BOG is pressure-fed by a BOG compressor to be processed, the present invention can reliquefy BOG at a low cost while utilizing the BOG compressor, and can enhance flexibility in operation of an LNG facility without exhausting, to atmosphere, BOG having a strong greenhouse effect.
  • an automatic switching valve, a pressure regulating valve, or a flow regulating valve may be provided in each line.
  • a liquid feeding pump, or a pressurizer may be provided in each line.
  • the "pass through a whole of the heat exchanger” means that a state in which 100% of an expected heat exchange function is exerted, and the "pass through a part of the heat exchanger” means that an expected heat exchange function exceeds 0%, and is less than 100%. Unless otherwise mentioned, the "pass through the heat exchanger" has a configuration including both.
  • the LNG supply system has an LNG tank that stores LNG, a compressor 1 that compresses BOG having first pressure, which is sent from the LNG tank through a first pressure BOG line L1, to increase the pressure of the compressed BOG to second pressure, a first cooler 2 that is disposed downstream with respect to the compressor 1, and cools the BOG having the second pressure, which is sent through a second pressure BOG line L2, a BOG booster 3 that is disposed downstream with respect to the first cooler 2, and pressurizes the BOG sent through the second pressure BOG line L2 such that the BOG has third pressure higher than the second pressure, a second cooler 4 that is disposed downstream with respect to the BOG booster 3, and cools the BOG having the third pressure, which is sent through a third pressure BOG line L3, and a second pressure BOG supply line L4 for supplying the BOG having the second pressure, the second pressure BOG supply line being branched from the second pressure BOG line L2.
  • the third pressure BOG line L3 is used also as a line for supplying the BOG having
  • the boil off gas reliquefying apparatus has the following configurations.
  • a first line L10 is branched from the third pressure BOG line L3 at a downstream position with respect to the second cooler 4, and extends as far as a first heat exchanger 10, a second heat exchanger 11, and a gas-liquid separator 12.
  • the first heat exchanger 10 has a capacitor function, and functions in order to heat-exchange the BOG having the third pressure.
  • the second heat exchanger 11 has a subcooler function, and functions in order to heat-exchange the BOG that passes through the first heat exchanger 10.
  • a first expansion valve 15 and a second expansion valve 16 are disposed downstream with respect to the second heat exchanger 11.
  • the first expansion valve 15 and the second expansion valve 16 function in order to subject the BOG which passes through the second heat exchanger 11 to free expansion, and reliquefy the BOG.
  • the gas-liquid separator 12 separates the BOG expanded by the first and second expansion valves 15 and 16 into BOG having fourth pressure lower than the third pressure, and LNG.
  • a reliquefaction LNG line L15 sends the LNG from the gas-liquid separator 12 to the LNG tank or a use point.
  • a first return line L12 is branched from the first line L10 in the first heat exchanger, and joins the second pressure BOG line L2 at an upstream position with respect to the BOG booster 3.
  • a first branch line L11 is branched from the first line L10 at an upstream position with respect to the first heat exchanger 10, and joins the first return line L12 that comes out of the first heat exchanger 10.
  • an expander 13, and a booster 14 driven by the expander 13 are disposed in the first return line L12.
  • the expander 13 expands the BOG that passes through a part of the first heat exchanger 10.
  • the booster 14 pressurizes the BOG that is expanded by the expander 13 to pass through the first heat exchanger 10.
  • a third cooler 35 is disposed in the first return line L12, and cools the BOG pressurized by the booster 14.
  • the cooled BOG joins the second pressure BOG line L2 at the upstream position with respect to the BOG booster 3.
  • a second return line L13 is branched from the first line L10 at a downstream position with respect to the first expansion valve 15 and an upstream position with respect to the second expansion valve 16, passes through the second heat exchanger 11, then passes through a part of the first heat exchanger 10, and joins the first pressure BOG line L1 at an upstream position with respect to the compressor 1.
  • a second branch line L14 is branched from the second return line L13 at the upstream position with respect to the first heat exchanger 10, and joins the second return line L13 that comes out of the first heat exchanger 10.
  • a third branch line L16 is branched from the reliquefaction LNG line L15, and passes through the second heat exchanger 11 to allow a part of the LNG to join the second return line L13.
  • a fourth pressure BOG line L17 passes through the second heat exchanger 11 from the gas-liquid separator 12 to allow the BOG having the fourth pressure to join the second return line L13.
  • a gate valve 18 may be provided at a downstream position with respect to the second heat exchanger 11.
  • FIG. 1B An example of another embodiment of Embodiment 1 is illustrated in Figure 1B .
  • a point of difference from Figure 1A is that a second return line L13 passes through a whole of a first heat exchanger 10.
  • FIG. 1C An example of yet another embodiment of Embodiment 1 is illustrated in Figure 1C .
  • a point of difference from Figure 1A is that only a second expansion valve 16 is disposed in a first line L10, and a first expansion valve 15 is disposed in a second return line L13.
  • a gate valve 18 may not be disposed at the downstream position with respect to a second heat exchanger 11.
  • a first cooler 2 and/or a second cooler 4 is not essential, and a function stop, or a post-stage process through a bypass line may be performed in accordance with a process specification.
  • a first branch line L11 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a second branch line L14 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a third branch line L16 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a configuration in which the second return line L13 passes through a part or a whole of the first heat exchanger 10 is selectable in accordance with a process specification.
  • the first pressure, the second pressure, the third pressure, and the fourth pressure of the BOG may be designed in accordance with a process specification.
  • Embodiment 2 A boil off gas reliquefying apparatus and an LNG supply system of Embodiment 2 will be described with reference to Figure 2 .
  • an expander/booster has a two-stage configuration.
  • the LNG supply system has the same configuration as the LNG supply system of Embodiment 1, and therefore description thereof will be omitted.
  • the boil off gas reliquefying apparatus of Embodiment 2 has the following configuration.
  • a first line L10 is branched from a third pressure BOG line L3 at a downstream position with respect to a second cooler 4, and extends as far as a first heat exchanger 10, a second heat exchanger 11, and a gas-liquid separator 12.
  • the first heat exchanger 10 has a capacitor function, and functions in order to heat-exchange BOG having third pressure.
  • the second heat exchanger 11 has a subcooler function, and functions in order to heat-exchange the BOG that passes through the first heat exchanger 10.
  • an expansion valve 16 is disposed downstream with respect to the second heat exchanger 11.
  • the expansion valve 16 functions in order to subject the BOG that passes through the second heat exchanger 11 to free expansion, and reliquefy the BOG.
  • a gas-liquid separator (separator) 12 separates the BOG expanded by the expansion valve 16 into BOG having fourth pressure lower than the third pressure, and LNG.
  • a reliquefaction LNG line L15 sends the LNG from the gas-liquid separator 12 to an LNG tank or a use point.
  • a first return line L12 is branched from the first line L10 in the first heat exchanger, and joins a second pressure BOG line L2 at an upstream position with respect to a BOG booster 3.
  • a first branch line L11 is branched from the first line L10 at an upstream position with respect to the first heat exchanger 10, and joins the first return line L12 that comes out of the first heat exchanger 10.
  • a first expander 33 is disposed in the first return line L12, and expands the BOG that passes through a part of the first heat exchanger 10.
  • the first return line L12 passes through the first heat exchanger 10, and joins the second pressure BOG line L2 at a downstream position with respect to a first cooler 2.
  • the BOG expanded by the first expander 33 is heat-exchanged by the first heat exchanger 10 again.
  • a fourth branch line L121 is branched from the first return line L12 before joining the second pressure BOG line L2, and joins the first line L10 at an upstream position with respect to the first heat exchanger 10.
  • a first booster 34 is disposed in the fourth branch line L121. The first booster 34 pressurizes the BOG that is expanded by the first expander (33) to pass through the first heat exchanger 10. The first booster 34 is driven by the first expander (33).
  • a third cooler 35 is disposed in the fourth branch line L121, and cools the BOG pressurized by the first booster 34.
  • a second return line L122 is branched from the first return line L12 before joining the second pressure BOG line L2, passes through the first heat exchanger 10 twice, and joins a first pressure BOG line L1 at an upstream position with respect to a compressor 1.
  • a second expander 36 is disposed in the second return line L122. The second expander 36 expands the BOG that passes through a part of the first heat exchanger 10. The second return line L122 passes through a part (or a whole) of the first heat exchanger 10 to join the first pressure BOG line L1 at an upstream position with respect to the compressor 1. The BOG expanded by the second expander 36 is heat-exchanged by the first heat exchanger 10 again.
  • a second booster 37 is disposed in the fourth branch line L121.
  • the second booster 37 further pressurizes the BOG that passes through the third cooler 35.
  • the second booster 37 is driven by the second expander 36.
  • a fourth cooler 38 is disposed in the fourth branch line L121, and cools the BOG pressurized by the second booster 37.
  • a third branch line L16 is branched from the reliquefaction LNG line L15, passes through the second heat exchanger 11, then passes through a part or a whole of the first heat exchanger 10, and joins a part of the LNG to the second return line L122.
  • a fourth pressure BOG line L171 passes through a part or a whole of the first heat exchanger 10 from the gas-liquid separator 12, and allows the BOG to join the second return line L122.
  • a fifth branch line L172 is branched from the fourth pressure BOG line L171, passes through the second heat exchanger 11, then passes through a part or a whole of the first heat exchanger 10, and joins the second return line L122.
  • a fourth pressure BOG line L171, a fifth branch line L172, and a third branch line L16 may be configured as the same line on an upstream side with respect to a first heat exchanger 10, or may be configured as separate lines.
  • Joining of the fourth pressure BOG line L171, the fifth branch line L172 and the third branch line L16 to a second return line L122 may be performed at an upstream position with respect to the first heat exchanger 10, may be performed in the first heat exchanger 10, or may be performed after coming out of the first heat exchanger 10.
  • a first cooler 2 and/or a second cooler 4 is not essential, a function stop, or a post-stage process through a bypass line may be performed in accordance with a process specification.
  • a first branch line L11 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • the fifth branch line L172 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • the third branch line L16 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a configuration in which the second return line L122 passes through a part or a whole of the first heat exchanger 10 is selectable in accordance with a process specification.
  • a configuration in which the fourth pressure BOG line L171, the fifth branch line L172, and the third branch line L16 pass through a part or a whole of the first heat exchanger 10 is selectable in accordance with a process specification.
  • the first pressure, the second pressure, the third pressure, and the fourth pressure of the BOG may be designed in accordance with a process specification.
  • the LNG supply system has an LNG tank that stores LNG, a compressor 1 that compresses BOG sent from a second return line L13 to increase the pressure of the compressed BOG to second pressure (P2), a first cooler 2 that is disposed downstream with respect to the compressor 1, and cools the BOG having the second pressure, which is sent through a second pressure BOG line L2, a BOG booster 3 that is disposed downstream with respect to the first cooler 2, and pressurizes the BOG sent through the second pressure BOG line L2 such that the BOG has third pressure higher than the second pressure (P2), a second cooler 4 that is disposed downstream with respect to the BOG booster 3, and cools the BOG having the third pressure (P3), which is sent through a third pressure BOG line L3, and a second pressure BOG supply line L4 that is branched from the second pressure BOG line L2, and supplies the BOG having the second pressure (P2).
  • the third pressure BOG line L3 is used also as a line for supplying the BOG having the third pressure.
  • the boil off gas reliquefying apparatus has the following configurations.
  • a first line L10 is branched from the third pressure BOG line L3 at a downstream position with respect to the second cooler 4, and extends as far as a first heat exchanger 10, a second heat exchanger 11, and a gas-liquid separator 12.
  • the first heat exchanger 10 has a capacitor function, and functions in order to heat-exchange the BOG having the third pressure.
  • the second heat exchanger 11 has a subcooler function, and functions in order to heat-exchange the BOG that passes through the first heat exchanger 10.
  • the second heat exchanger 11 heat-exchanges BOG supplied from the LNG tank.
  • a first expansion valve 15 and a second expansion valve 16 are disposed downstream with respect to the second heat exchanger 11.
  • the first expansion valve 15 and the second expansion valve 16 function in order to subject the BOG which passes through the second heat exchanger 11 to free expansion, and reliquefy the BOG.
  • the gas-liquid separator (separator) 12 separates the BOG expanded by the first and second expansion valves 15 and 16 into BOG having fourth pressure lower than the third pressure, and LNG.
  • a reliquefaction LNG line L15 sends the LNG from the gas-liquid separator 12 to the LNG tank or a use point.
  • a first return line L12 is branched from the first line L10 in the first heat exchanger, and joins the second pressure BOG line L2 at an upstream position with respect to the BOG booster 3.
  • the first branch line L11 is branched from the first line L10 at an upstream position with respect to the first heat exchanger 10, and joins the first return line L12 that comes out of the first heat exchanger 10.
  • an expander 13, and a booster 14 driven by the expander 13 are disposed in the first return line L12.
  • the expander 13 expands the BOG that passes through a part of the first heat exchanger 10.
  • the booster 14 pressurizes the BOG that is expanded by the expander 13 to pass through the first heat exchanger 10.
  • a third cooler 35 is disposed in the first return line L12, and cools the BOG pressurized by the booster 14.
  • the cooled BOG joins the second pressure BOG line L2 at the upstream position with respect to the BOG booster 3.
  • a second return line L13 is branched from the first line L10 at a downstream position with respect to the first expansion valve 15 and an upstream position with respect to the second expansion valve 16, and passes through the second heat exchanger 11, and then passes through a part or a whole of the first heat exchanger 10, and joins the first pressure BOG line L1 at an upstream position with respect to the compressor 1.
  • the BOG supplied from the LNG tank passes through the second heat exchanger 11, and joins the second return line L13.
  • a second branch line L14 is branched from the second return line L13 at the upstream position with respect to the first heat exchanger 10, and joins the second return line L13 that comes out of the first heat exchanger 10.
  • a third branch line L16 is branched from the reliquefaction LNG line L15, and passes through the second heat exchanger 11 to allow a part of the LNG to join the second return line L13.
  • a fourth pressure BOG line L17 passes through the second heat exchanger 11 from the gas-liquid separator 12 to allow the BOG having the fourth pressure to join the second return line L13.
  • a gate valve 18 may be provided at a downstream position with respect to the second heat exchanger 11.
  • a second return line L13 may pass through a part of a first heat exchanger 10.
  • a second expansion valve 16 may be disposed in a first line L10, and a first expansion valve 15 may be disposed in the second return line L13.
  • a gate valve 18 may not be provided at the downstream position with respect to a second heat exchanger 11.
  • a first cooler 2 and/or a second cooler 4 is not essential, and a function stop, or a post-stage process through a bypass line may be performed in accordance with a process specification.
  • a first branch line L11 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a second branch line L14 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a third branch line L16 is not essential, and may not be provided in accordance with a process specification, or may be provided with a gate valve on the line to cause to function as needed.
  • a configuration in which the second return line L13 passes through a part or a whole of the first heat exchanger 10 is selectable in accordance with a process specification.
  • the first pressure, the second pressure, the third pressure, and the fourth pressure of the BOG may be designed in accordance with a process specification.
  • Embodiment 3 it has been confirmed that the temperature of high pressure BOG is reduced by leading BOG (for example, -160°C) generated from the LNG tank to the subcooler function in order to further reduce the gasified amount at the time of decompression of high pressure BOG, and the amount of BOG to be recycled can be reduced.
  • leading BOG for example, -160°C

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP19150672.4A 2018-01-17 2019-01-08 Appareil de reliquéfaction de gaz d'évaporation et système d'alimentation en gaz naturel liquéfié muni d'un tel appareil Withdrawn EP3514466A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018005304A JP6366870B1 (ja) 2018-01-17 2018-01-17 ボイルオフガス再液化装置およびそれを備えるｌｎｇ供給システム

Publications (2)

Publication Number Publication Date
EP3514466A2 true EP3514466A2 (fr) 2019-07-24
EP3514466A3 EP3514466A3 (fr) 2019-11-06

Family

ID=63036779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19150672.4A Withdrawn EP3514466A3 (fr) 2018-01-17 2019-01-08 Appareil de reliquéfaction de gaz d'évaporation et système d'alimentation en gaz naturel liquéfié muni d'un tel appareil

Country Status (5)

Country Link
EP (1) EP3514466A3 (fr)
JP (1) JP6366870B1 (fr)
KR (1) KR102057945B1 (fr)
CN (1) CN110044130B (fr)
TW (1) TWI677644B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11577191B1 (en) 2021-09-09 2023-02-14 ColdStream Energy IP, LLC Portable pressure swing adsorption method and system for fuel gas conditioning
WO2023091027A1 (fr) * 2021-11-19 2023-05-25 Econnect Energy As Système et procédé de refroidissement d'un produit gazeux liquéfié
US11717784B1 (en) 2020-11-10 2023-08-08 Solid State Separation Holdings, LLC Natural gas adsorptive separation system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3908881B2 (ja) 1999-11-08 2007-04-25 大阪瓦斯株式会社 ボイルオフガスの再液化方法
WO2015128903A1 (fr) 2014-02-28 2015-09-03 日揮株式会社 Équipement de réception pour gaz naturel liquéfié
KR101767557B1 (ko) 2016-09-01 2017-08-11 대우조선해양 주식회사 선박용 증발가스 재액화 시스템 및 방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3673127B2 (ja) * 1999-11-08 2005-07-20 大阪瓦斯株式会社 ボイルオフガスの再液化方法
MY122625A (en) * 1999-12-17 2006-04-29 Exxonmobil Upstream Res Co Process for making pressurized liquefied natural gas from pressured natural gas using expansion cooling
DE10108905A1 (de) * 2001-02-23 2002-09-05 Linde Ag Verfahren zum Verflüssigen eines wenigstens zweikomponentigen Gasgemisches
US6751985B2 (en) * 2002-03-20 2004-06-22 Exxonmobil Upstream Research Company Process for producing a pressurized liquefied gas product by cooling and expansion of a gas stream in the supercritical state
JP2005273681A (ja) * 2004-03-22 2005-10-06 Ebara Corp 低温液化ガス貯留システム
US20070283718A1 (en) * 2006-06-08 2007-12-13 Hulsey Kevin H Lng system with optimized heat exchanger configuration
BRPI0815707A2 (pt) * 2007-08-24 2015-02-10 Exxonmobil Upstream Res Co Processo para a liquefação de uma corrente gasosa, e, sistema para o tratamento de uma corrente de alimentação gasosa.
CN101406763B (zh) * 2008-10-31 2012-05-23 华南理工大学 一种船运液货蒸发气体的再液化方法
JP5737894B2 (ja) * 2010-09-30 2015-06-17 三菱重工業株式会社 ボイルオフガス再液化装置
JP6250519B2 (ja) * 2014-10-17 2017-12-20 三井造船株式会社 ボイルオフガス回収システム
EP3403038A1 (fr) * 2016-01-12 2018-11-21 Global LNG Services AS Procédé et installation de liquéfaction de gaz naturel prétraité
US10760850B2 (en) * 2016-02-05 2020-09-01 Ge Oil & Gas, Inc Gas liquefaction systems and methods
CN105627694B (zh) * 2016-03-14 2017-08-22 江苏德邦工程有限公司 Lng加气站bog压缩液化回收系统及方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3908881B2 (ja) 1999-11-08 2007-04-25 大阪瓦斯株式会社 ボイルオフガスの再液化方法
WO2015128903A1 (fr) 2014-02-28 2015-09-03 日揮株式会社 Équipement de réception pour gaz naturel liquéfié
KR101767557B1 (ko) 2016-09-01 2017-08-11 대우조선해양 주식회사 선박용 증발가스 재액화 시스템 및 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LNG TECHNOLOGY, LINDE ENGINEERING, 7 January 2018 (2018-01-07), Retrieved from the Internet <URL:https://www.linde-engineering.com/internet.global.lindeengineering.global/en/images/LNG_1_1_e_13_150dpi_ NB19_4577.pdf? v=8.0>

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11717784B1 (en) 2020-11-10 2023-08-08 Solid State Separation Holdings, LLC Natural gas adsorptive separation system and method
US11577191B1 (en) 2021-09-09 2023-02-14 ColdStream Energy IP, LLC Portable pressure swing adsorption method and system for fuel gas conditioning
WO2023091027A1 (fr) * 2021-11-19 2023-05-25 Econnect Energy As Système et procédé de refroidissement d'un produit gazeux liquéfié

Also Published As

Publication number Publication date
TW201932748A (zh) 2019-08-16
JP2019124293A (ja) 2019-07-25
CN110044130B (zh) 2021-01-08
TWI677644B (zh) 2019-11-21
CN110044130A (zh) 2019-07-23
KR102057945B1 (ko) 2019-12-20
KR20190088007A (ko) 2019-07-25
EP3514466A3 (fr) 2019-11-06
JP6366870B1 (ja) 2018-08-01

Similar Documents

Publication Publication Date Title
EP2185877B1 (fr) Procede et installation de liquefaction de gaz naturel
AU674813B2 (en) Process and apparatus for producing liquefied natural gas
EP3514466A2 (fr) Appareil de reliquéfaction de gaz d&#39;évaporation et système d&#39;alimentation en gaz naturel liquéfié muni d&#39;un tel appareil
US11774173B2 (en) Arctic cascade method for natural gas liquefaction in a high-pressure cycle with pre-cooling by ethane and sub-cooling by nitrogen, and a plant for its implementation
US9671160B2 (en) Multi nitrogen expansion process for LNG production
US6564578B1 (en) Self-refrigerated LNG process
EP2623414A1 (fr) Dispositif de reliquéfaction de gaz d&#39;évaporation
US20190049174A1 (en) Method and system for liquefying a natural gas feed stream
KR101966980B1 (ko) 냉매순환라인 및 이를 포함하는 냉각시스템
KR101593970B1 (ko) 증발가스의 다단 재액화 시스템 및 방법
GB2522421A (en) LNG production process
JP2008286211A (ja) Ｂｏｇ圧縮設備及びその運転方法
RU2018110349A (ru) Система и способ обработки газа, полученного при испарении криогенной жидкости
US9791209B2 (en) System and process for liquefying natural gas
KR20160074965A (ko) 선박의 연료가스 공급시스템
US8578734B2 (en) Method and apparatus for liquefying a hydrocarbon stream
CN114877619A (zh) 二氧化碳的液化系统及液化方法
KR20170101855A (ko) 증발가스 재액화 시스템 및 방법
JP7355979B2 (ja) ガス液化装置
KR102024772B1 (ko) Lng bog 재액화 시스템
US20160003526A1 (en) Methods and apparatuses for liquefying hydrocarbon streams
CA3184527A1 (fr) Systeme de gestion de gaz
AU2008294046B2 (en) Natural gas liquefaction process
CN115950205A (zh) 基于朗肯循环的液化天然气船蒸发气再液化系统及方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F25J 1/02 20060101ALI20190927BHEP

Ipc: F25J 1/00 20060101AFI20190927BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200506

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230125

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20230606