EP2715259A1 - Verwendung von flüssigerdgas zur verflüssigung eines einzuschmelzenden brennstoffs - Google Patents

Verwendung von flüssigerdgas zur verflüssigung eines einzuschmelzenden brennstoffs

Info

Publication number
EP2715259A1
EP2715259A1 EP12794038.5A EP12794038A EP2715259A1 EP 2715259 A1 EP2715259 A1 EP 2715259A1 EP 12794038 A EP12794038 A EP 12794038A EP 2715259 A1 EP2715259 A1 EP 2715259A1
Authority
EP
European Patent Office
Prior art keywords
lng
cargo
line
vaporizer
bog
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Withdrawn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
EP12794038.5A
Other languages
English (en)
French (fr)
Other versions
EP2715259A4 (de
Inventor
Carl Jørgen RUMMELHOFF
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.)
Wartsila Oil and Gas Systems AS
Original Assignee
Wartsila Oil and Gas Systems 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 Wartsila Oil and Gas Systems AS filed Critical Wartsila Oil and Gas Systems AS
Publication of EP2715259A1 publication Critical patent/EP2715259A1/de
Publication of EP2715259A4 publication Critical patent/EP2715259A4/de
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • 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
    • 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
    • F25J1/0221—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 the cold stored in an external cryogenic component in an open refrigeration loop
    • F25J1/0224—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 the cold stored in an external cryogenic component in an open refrigeration loop in combination with an internal quasi-closed 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
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0277—Offshore use, e.g. during shipping
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • 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
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, 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
    • 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
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
    • 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
    • F17C2223/03—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
    • 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
    • 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
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
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    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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    • F17C2227/0367—Localisation of heat exchange
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    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • 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
    • 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
    • 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
    • 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
    • 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
    • F25J2210/06—Splitting of the feed stream, e.g. for treating or cooling in different ways
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/64—Propane or propylene
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/66—Butane or mixed butanes
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/34—Details about subcooling of liquids

Definitions

  • the present invention relates to a system and method for utilizing LNG used for fuel to liquefy LPG boil off.
  • LPG carriers have normally up to four cargo tanks where the cargo tanks share common vapor atmosphere when carrying one type of cargo.
  • the LPG carriers are constructed so that they can carry two different cargoes at the same time. That means that the piping system on deck is duplicated enabling complete segregation of the two cargo systems.
  • An LPG carrier can for instance be loaded with propane in three tanks and butane in the fourth cargo tank.
  • the three tanks loaded with propane have a communicating vapor space, but totally isolated from the butane vapor space.
  • Each of the deck piping systems is connected to a number of reliquefaction units ensuring that the cargo tank pressure does not go above maximum allowable pressure.
  • the reliquefaction units compress the boil off gas to sufficient pressure so that the gas can be condensed against seawater.
  • the condensate is returned back to the cargo tanks. In this manner the cargo tank pressure is maintained low.
  • VLGC Very Large Gas Carrier, typically about 82.000 m 3 cargo carrying capacity
  • the fuel oil consumption (to generators) to liquefy the boil off gas is about 1900 kg / day.
  • LNG being approximately 50% less dens than marine diesel oil LNG will require twice the storage volume to hold the same amount of energy. It is important that an increased fuel storage volume is to the cost of the vessels cargo carrying capacity.
  • Another issue related to transport of LPG in e.g. the North Sea basin where the voyage duration is short and consequently the harbor time is a significant contributor to the total round trip duration, thus reductions in the harbor time is of importance.
  • the present invention discloses a system for liquefying LPG boil off gas (BOG), the system comprising a LNG fuel supply system, wherein the LNG fuel system comprises at least one LNG fuel tank 23, a LNG fuel line 5 and a second LNG fuel line 13; and a LPG cargo system, wherein the LPG cargo system comprises at least one LPG cargo tank 20, a BOG line 1 , at least one reliquefaction unit 100 and a condensate line 3; wherein the system further comprises: at least one vaporizer 15, 22 provided on the LNG fuel line 5 between the LNG fuel tank 23 and the second LNG fuel line 13, wherein the at least one vaporizer 15, 22 is in thermal exchange with the LPG cargo system.
  • BOG LPG boil off gas
  • the present invention also discloses a method of liquefying LPG boil off gas (BOG) in a system comprising a LNG fuel supply system, wherein the LNG fuel system comprises at least one LNG fuel tank 23, a first LNG fuel line 5 and a second LNG fuel line 13 and a LPG cargo system, wherein the LPG cargo system comprises at least one LPG cargo tank 20, a BOG line 1 , at least one reliquefaction unit 100 and a condensate line 3; wherein method comprises: providing at least one vaporizer 22, 1 positioned on the first LNG fuel line 5 between the LNG fuel tank and the second LNG fuel line 13; condensing BOG by vaporizing LNG flowing from the LNG fuel tank; and routing condensed BOG to the LPG cargo tank.
  • BOG LPG boil off gas
  • the number of vaporizers 22, 15 corresponds to the number of cargoes that can be transported at the same time. This is normally two.
  • Other favorable embodiments of the present invention are to be understood by the dependent patent claims and the detailed description herein after, with reference to the amended figures, wherein:
  • Fig. 1 is a schematic overview of a reliquefaction unit of prior art
  • Fig. 2 is a schematic overview of one embodiment of a system according to the present invention.
  • Fig. 3 is a schematic overview of another embodiment of a system according to the present invention.
  • LPG is to be understood as a range of different grades or products of petroleum gases stored and transported as liquid cargo.
  • Propane and Butane being the principal examples; Propane typically including any concentration of Ethane from 0 % by volume up to 5 % by volume, and Butane content in Propane including any concentration from 0 % by volume up to 20 % by volume.
  • This mixture consisting of mainly Propane, between typically 70 - 98 volume % is known as commercial Propane and hereinafter called Propane.
  • Butane can be any mixture of normal-Butane and iso-Butane with possible fractions of unsaturated hydrocarbons and hereinafter called Butane.
  • Propane and Butane LPG should as a minimum include the following grades:
  • a reliquefaction unit is hereinafter to be understood as a refrigeration unit liquefying said vapor, and the prefix "re" points to liquefaction of vapor from liquefied gases.
  • LPG' s are transported in liquid form either at pressures greater than atmospheric or at temperatures below ambient, or a combination of both.
  • This invention relates to LPG carriers transporting liquefied cargoes, LPG, at temperatures below ambient, known as fully refrigerated LPG carriers; and LPG carriers transporting liquefied cargoes, LPG, at pressures greater than atmospheric and temperatures below ambient. The latter is known as semi-refri gerated/semi -pressuri sed.
  • a cargo type is any of the LPG grades or products mentioned above.
  • Condensate shall be understood as liquefied boil off gas, where boil off gas is vapor emitting from the cargo due to a constant heat leakage into the cargo tanks.
  • Warm cargo is LPG loaded at a temperature above the LPG saturation temperature at a current cargo tank pressure.
  • KR 20100102872 discusses a method to be used on complex ships or Floating
  • KR 20100102872 deals with how to utilize the low temperature of the LNG boil off gas prior to compression and liquefaction to condense the LPG boil off gas in order to reduce the complexity of the LPG
  • KR 20100102872 uses the sensible heat of the LNG boil off gas in order to condense the LPG boil off gas opposed to this invention that are using the combination of latent heat and sensible heat of LNG to condense LPG boil off gas in combination with a LNG fuel gas system.
  • US 5860294 describes firstly a reliquefaction system identical to reliquefaction unit 100 in this invention but with a downstream second condenser system with purpose to recover gaseous hydrocarbons from a gas mixture that will not condense in the normal cargo condenser.
  • the main cargo condenser In order for the second condenser system in US 5860294 to function, the main cargo condenser must be in operation and part condensation must occur in this exchanger.
  • the second condenser system (22) is located upstream the cargo reliquefaction system and is not dependent on operation of the main cargo condenser.
  • KR 20010077227 describes a method for reliquefaction of LNG boil off gas where the LNG boil off gas is liquefied against a portion of a LNG stream routed to a vaporizer prior to send out to e.g. a national natural gas distribution grid.
  • Boil off gas condensate is mixed with the LNG export line. No condensate is returned back to the storage tank.
  • Liquid LNG is here used to control the pressure in the LNG storage tank by heat exchange / absorption of boil off gas into LNG prior to vaporization of the combined LNG and condensate stream.
  • EP 1990272 is in principle similar to KR 20010077227 but the condensate is returned back to the storage tank and the vaporized product is sent to a gas engine as fuel.
  • US 3306660 describes a method and system for storage of multi component cryogenic fluids where the more volatile components naturally boiling off are captured, condensed and reintroduced back to the storage tank. Pumped out cryogenic liquid is used to condense the boil off gas.
  • WO 201 1062505 describes a process to recover boil off gas from LNG storage tanks where LNG is routed to a re-condensing tank where it absorbs LNG boil off gas.
  • US 2795937 describes a process and apparatus for storage and transportation of liquefied gases where one tank holds liquefied natural gas (LNG) and one tank holds a liquid of higher boiling temperature.
  • LNG liquefied natural gas
  • the LNG is used as fuel onboard the vessel and vaporized and heated prior to entering the combustion engine by heat exchange in the tank liquid of the higher boiling temperature liquid.
  • US 2795937 teaches that this heat exchange prevents any boil off from the liquid surface and thus no boil off
  • US 3864918 describes a method where boil off gas from a LNG cargo tank is captured and separated into two component flows. The first flow is compressed, cooled and liquefied. The second flow is used as fuel to drive the vessel.
  • FIG. 1 shows for reference a typical prior art reliquefaction unit 100 connected to at least one cargo tank(s) 20. Cargo loading lines are not shown. Boil off gas from the cargo tank 20 flows via a boil off gas line 1 to a cargo compressor 40, the cargo compressor typically being the first stage of a multistage compressor, in which the vapor is compressed to an intermediate pressure. Any amount of vapor not being handled by the reliquefaction unit shown in figure 1 flows via a boil off gas line 5 1 to parallel operating units, not shown.
  • Boil off gas exiting the cargo compressor 40 via a line 46 enters an economizer 43 in which the boil off gas is brought close to its saturation temperature.
  • the boil off gas then flows via a line 47 from the economizer 43 to a cargo compressor 41 , wherein the boil off gas is compressed to bubble point pressure corresponding to an obtainable temperature in a cargo condenser 42.
  • the cargo compressor 41 is typically the second stage of a multistage compressor. Occasionally more than two compression stages are needed, and they will typically be in series with 41.
  • the compressed boil off gas then enters the cargo condenser 42 via a line 48 to be condensed against seawater or any cooling medium typically above seawater temperatures.
  • Sea-water is by far the most common used heat sink for the cargo condenser 42 but a mixture of water and an anti freeze agent is also possible.
  • Anti freeze agents can be any suitable glycol.
  • the remaining warm condensate to be returned to the cargo tank(s) 20 flows further from where 50 branches off via a coil 52 inside the economizer 43 and leaves the coil 52 at a sub cooled state.
  • the now sub cooled condensate flows via line 3 back to the cargo tanks.
  • a condensate production valve 45 regulates the amount of condensate flow back to the cargo tank(s) 20. Condensate from other parallel running reliquefaction units connects into line 3, not shown.
  • Fig. 2 illustrates two hitherto distinct, separate, systems, an LNG fuel gas supply system (over the stippled line) and a LPG cargo system.
  • the LNG fuel gas supply system is provided with one or more connected LNG fuel tanks 23.
  • the fuel gas supply system is further provided with a valve 27 controlling the amount of LNG to be vaporized in a pressure build-up heat exchanger 24 to ensure more or less constant vapor pressure in fuel tank 23, thus ensuring a sufficient fuel gas supply pressure in fuel line 5.
  • LNG is supplied to a vaporizer 25, wherein the LNG is vaporized and the resulting vapor flows to a super heater 26, where the vapor is heated to preferred fuel gas temperature, before being transferred to the main engines via line 13. Also shown in fig. 2 is a vapor line 8 and valve 28, allowing routing of LNG boil-off to the super heater 26 if pressure reduction in the fuel tank 23 is required.
  • vapor line 8 is routed to safe location or alternatively to a utility consumer, under most circumstances there is no flow in the vapor line 8.
  • the LPG cargo system of fig. 2 is provided with a reliquefaction unit 100 and at least one LPG cargo tank 20, a BOG line 1 flowing boil of gas to the reliquefaction unit 100 and a condensate line 3 returning condensate via valve 45 back to the cargo tank 20.
  • a typical VLGC Very Large Gas Carrier
  • a typical installed propulsion power on a VLGC is 14MW having a typical energy consumption of 7500 kJ/kWh at maximum continuous rating, the amount of LNG required at this condition is about 2120 kg/hr.
  • the refrigerant potential of the LNG will for all practical terms eliminate the need for running the reliquefaction units during the laden voyage and particularly for ambient temperatures below maximum design and/or speeds at maximum continuous rating. In fact, at these conditions reliquefaction operations can be eliminated completely.
  • a system for utilizing LNG used for fuel to liquefy LPG boil off therefore includes at least one vaporizer 15, 22 provided on the LNG fuel line 5, between the LNG fuel tank 23 and the second LNG fuel line 13, wherein the at least one vaporizer 15, 22 is in thermal exchange with the LPG cargo system, efficiently integrating the LNG fuel system into the LPG boil off gas system.
  • a dedicated blower installed on the boil off gas line feeding directly to vaporizer 22 is an obvious choice, but to the cost of additional equipment when there is already a cargo compressor installed. Thus this solution is likely not to be preferable, and hence not shown.
  • free flow of vapor to the vaporizer 22 is also possible, however, for this combination a return pump should be considered.
  • the least one vaporizer 22 is a BOG condenser adapted to condense BOG by vaporizing LNG flowing by pressure from fuel tank 23 via line 5.
  • the condensate is routed back to cargo tank 20 via a line 2.
  • the LNG is vaporized against the boil off gas, and dependent on amount of boil off and fuel consumption the LNG can be partly vaporized, fully vaporized or fully vaporized and super heated.
  • the resulting product leaves 22 and enters the vaporizer 25 where any residual LNG is vaporized.
  • the vapor from the vaporizer 25 flows to the super heater 26 where the vapor is heated to preferred fuel gas temperature.
  • valves 29, 30 is provided in front of, and in parallel with vaporizer 22, respectively, so that valve 29 being open and valve 30 being closed when there are no BOG in the BOG line 1 , and vice versa.
  • the valves 29, 30 adjust the amount of LNG flowing to the vaporizer 22, 15 to the amount of available BOG present in the BOG line 1 and current LNG
  • the at least one vaporizer 15 is a condensate sub cooler provided on the condensate line 3, between the reliquefaction unit 100 and the cargo tank 20, the condensate sub cooler 1 being adapted to sub cool LPG condensate by vaporizing LNG from the fuel tank 23.
  • the condensate sub cooler could be used alone in embodiments as described above with reference to the BOG condenser 22.
  • both vaporizer 15 and vaporizer 22 is provided increasing operational flexibility and utilization of excessive refrigerant capacity in the LNG when available, as will be disclosed in further detail below.
  • valves 16 and 17 is provided to enable bypass or pass-through of vaporizer 15.
  • boil off gas emitted from the LPG cargo tank 20 Rows in the line 1 directly to cargo compressor 40, 41 where the boil off gas is moderately lifted in pressure.
  • the piping system around the cargo compressor 40, 41 in the reliquefaction 100 unit is arranged such that it operates in a single stage compression modus.
  • Moderately compressed boil off gas from the cargo compressor 40, 41 flows via line 2 to the vaporizer 22 where the boil of gas is condensed and returned back to the cargo tank 20.
  • BOG is condensed by vaporizing LNG flowing by pressure from fuel tank 23 via line 5.
  • the condensed BOG is routed back to cargo tank 20 via a line 2.
  • the LNG is vaporized against the boil off gas, and dependent on amount of boil off present and current fuel consumption the LNG can be partly vaporized, fully vaporized or fully vaporized and super heated.
  • the resulting product leaves the vaporizer 22 and enters the vaporizer 25 where any residual LNG is vaporized.
  • the vapor from the vaporizer 25 is transferred via line 12 to the super heater 26 where the vapor is heated to a preferred fuel gas temperature.
  • the amount of boil off gas and the fuel consumption of LNG is such that the vapor leaving the at least one vaporizer 22 is superheated both the vaporizer 25 and the super heater could be omitted.
  • the amount of boil off and the fuel consumption of LNG is such that the vapor leaving the at least one vaporizer 22 is fully vaporized the vaporizer 25 could be omitted.
  • two valves 29, 30 is provided in front of, and in parallel with vaporizer 22, respectively, so that valve 29 is opened and valve 30 is closed when there are no BOG in the BOG line 1 , and vice versa.
  • the two valves 29, 30 can also adjusts the amount of LNG flowing to the vaporizer 22, 15 to the amount of available BOG present in the BOG line 1 and current LNG fuel consumption.
  • the LNG flowing to the vaporizer 22, 15 is fully vaporized, and the vapor is transferred to the super heater 26 where the vapor is heated to a preferred fuel gas temperature. Any excess LNG not needed in the vaporizer 22, 1 is transferred directly to the vaporizer 25, where the excess LNG is vaporized before being transferred to the super heater 26.
  • the two valves 29, 30 can be replaced by a three way valve providing the same functionality.
  • the exemplary embodiments disclosed above refer mainly to the usage of the system during laden voyage when the LNG fuel consumption is high. During loading, however, the boil off rate is at its maximum, and the LNG fuel consumption at is low end, hence there is limited amount of LNG available for liquefying the BOG. Hence the reliquefaction unit 100 must be put into operation.
  • sub cooling the condensate reduces the flash gas generation in cargo tank 20 and hence increases the system performance by not having to recycle the flash gas back to the cargo compressor.
  • the condensate sub cooler 15 is located using LNG as coolant.
  • the condensate is reduced in temperature preferably not below -50°C before it is returned back to the cargo tanks. Condensate temperature depends on type of cargo and can be higher for the warmer types of cargo.
  • LPG carriers are constructed so that they can carry two different cargoes at the same time, the two cargoes can be propane and butane.
  • the vaporizers 22, 15 will then operate in a series order so that firstly LNG is vaporized against propane in at least one vaporizer 22, then the vaporized LNG flows via line 74 to line 80 on the parallel unit operating on butane .
  • the resulting warmer vaporized LNG returns to the fuel gas system via line 5.
  • Figure 3 shows an arrangement on how this can be with one tank loaded with butane and three tanks loaded with propane.
  • four reliquefaction units 100 will be installed, but normally during voyage two will be in standby, and particularly when using LNG as fuel according to this invention.
  • Figure 3 does not show the standby reliquefaction units.

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)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP12794038.5A 2011-05-30 2012-05-30 Verwendung von flüssigerdgas zur verflüssigung eines einzuschmelzenden brennstoffs Withdrawn EP2715259A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20110783 2011-05-30
PCT/NO2012/000042 WO2012165967A1 (en) 2011-05-30 2012-05-30 Utilization of lng used for fuel to liquefy lpg boil off

Publications (2)

Publication Number Publication Date
EP2715259A1 true EP2715259A1 (de) 2014-04-09
EP2715259A4 EP2715259A4 (de) 2015-10-21

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EP (1) EP2715259A4 (de)
JP (1) JP5932985B2 (de)
KR (1) KR101904367B1 (de)
CN (1) CN103608632B (de)
WO (1) WO2012165967A1 (de)

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CN107449220A (zh) * 2017-09-19 2017-12-08 浙江大学常州工业技术研究院 Bog再液化回收系统及bog再液化回收工艺

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KR20150131860A (ko) * 2014-05-16 2015-11-25 대우조선해양 주식회사 Lpg 운반선의 연료공급 시스템 및 연료공급 방법
KR101807986B1 (ko) * 2014-05-30 2017-12-11 바르실라 핀랜드 오이 선박의 연료 탱크 배열체 및 선박의 탱크 컨테이너를 작동하는 방법
EP3160840A4 (de) * 2014-06-27 2018-03-07 Odense Maritime Technology A/S System zur bereitstellung von kühlung in einem wasserfahrzeug
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