DK2331897T3 - Fremgangsmåde og system til optimeret LNG-produktion - Google Patents
Fremgangsmåde og system til optimeret LNG-produktion Download PDFInfo
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- DK2331897T3 DK2331897T3 DK09788380.5T DK09788380T DK2331897T3 DK 2331897 T3 DK2331897 T3 DK 2331897T3 DK 09788380 T DK09788380 T DK 09788380T DK 2331897 T3 DK2331897 T3 DK 2331897T3
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- Denmark
- Prior art keywords
- expander
- unit
- expanders
- cooling
- compressor
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- 238000000034 method Methods 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 230000008569 process Effects 0.000 title claims description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 50
- 238000001816 cooling Methods 0.000 claims description 43
- 239000003507 refrigerant Substances 0.000 claims description 38
- 239000003345 natural gas Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 238000013021 overheating Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 description 33
- 239000003949 liquefied natural gas Substances 0.000 description 27
- 238000005057 refrigeration Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000872 buffer Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 description 1
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- 238000007667 floating Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/0047—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 an "external" refrigerant stream in a closed vapor compression cycle
- F25J1/005—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 an "external" refrigerant stream in a closed vapor compression cycle by expansion of a gaseous refrigerant stream with extraction of work
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/007—Primary atmospheric gases, mixtures thereof
- F25J1/0072—Nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/0203—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0204—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/0203—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0205—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a dual level SCR refrigeration cascade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/0203—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0207—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 a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as at least a three level SCR refrigeration cascade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J1/0244—Operation; Control and regulation; Instrumentation
- F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
- F25J1/0249—Controlling refrigerant inventory, i.e. composition or quantity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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.
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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.
- F25J1/0298—Safety aspects and control of the refrigerant compression system, e.g. anti-surge control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J2270/14—External refrigeration with work-producing gas expansion loop
- F25J2270/16—External refrigeration with work-producing gas expansion loop with mutliple gas expansion loops of the same refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J2270/60—Closed external refrigeration cycle with single component refrigerant [SCR], e.g. C1-, C2- or C3-hydrocarbons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/902—Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Claims (20)
1. Fremgangsmåde til produktion af underkølet naturgas, der er gjort flydende, ved hjælp af en køleenhed under anvendelse af et enkeltfaset gasformigt kølemiddel, omfattende: to eller tre ekspandere (1-3; 2-3); en kompressorenhed (5-7; 13-18; 5-7; 14-18); en varmevekslerenhed (8) til varmeabsorption fra naturgas; og en varmeafvisningsenhed (10-12; 19-24; 10-12; 20-24), kendetegnet ved: at anbringe ekspanderne (1-3; 2-3) i to eller tre ekspander-sløjfer, hvor hver ekspander styres uafhængigt; kun at anvende det ene og samme kølemiddel i alle sløjfer; at passere et udvidet kølemiddelflow fra den respektive ekspander (1-3; 2-3) og ind i varmevekslerenheden (8), hvor - hvis der er to ekspandere: kølemiddelflowet fra den første ekspander er ved et masseflow og temperaturniveau, der er tilpasset til afoverophedning, kondensering og afkøling af den tætte fase af naturgas, og kølemidlet fra den anden ekspander er ved et masseflow og temperaturniveau, der er tilpasset til underkøling af naturgas; - hvis der er tre ekspandere: kølemiddelflowet fra den første ekspander er ved et masseflow og temperaturniveau, der er tilpasset til afoverophedning af naturgas, kølemiddelflowet fra den anden ekspander er ved et masseflow og temperaturniveau, der er tilpasset til kondensering og afkøling af den tætte fase af naturgas, og kølemidlet fra den tredje ekspander er ved et masseflow og temperaturniveau, der er tilpasset til underkøling af naturgas; og tilvejebringe kølemidlet til den respektive ekspander (1-3; 2-3) i et komprimeret flow ved hjælp af kompressorenheden (5-7; 13-18; 5-7; 14-18) med kompressorer eller kompressortrin, der muliggør tilpassede indløbs- og udløbstryk til den respektive ekspander.
2. Fremgangsmåde ifølge krav 1, kendetegnet ved, at forbinde ekspanderne (1-3; 2-3) med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed med separate ekspander-sløjfer (52, 51, 56, 55, 60, 59; 56, 55, 60, 59).
3. Fremgangsmåde ifølge krav 1, kendetegnet ved, at forbinde ekspanderne (1-3; 2-3) med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at forene kolde strømme i ekspander-sløjferne (52, 56) i forbindelse med varmevekslerenheden (8).
4. Fremgangsmåde ifølge krav 1, kendetegnet ved, at forbinde ekspanderne (1-3; 2-3) med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at opdele varme strømme i ekspander-sløjferne (51, 56) i forbindelse med varmevekslerenheden (8) opstrøms for ekspanderne (1-3; 2-3).
5. Fremgangsmåde ifølge krav 1, kendetegnet ved, at forbinde ekspanderne (1-3; 2-3) med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at opdele varme strømme (51,55) opstrøms for ekspanderne (1-3; 2-3) og forene kolde strømme (52, 56) i forbindelse med varmevekslerenheden (8).
6. Fremgangsmåde ifølge krav 1, kendetegnet ved, at forbinde hver ekspander (1-3; 2-3) med kompressorenheden (13- 18; 14-18) for fluidisk at danne separate kølecyklusser.
7. Fremgangsmåde ifølge krav 1, 2 og 3, kendetegnet ved, at styre kølekapaciteter ved at variere en kølemiddelbeholdning.
8. Fremgangsmåde ifølge krav 1 og 4, kendetegnet ved, at variere kølekapaciteterne uafhængigt i hver cyklus ved separat beholdningsstyring.
9. Fremgangsmåde ifølge et af de foregående krav, kendetegnet ved, at styre kølekapaciteterne ved kompressorhastighedsstyring.
10. Fremgangsmåde ifølge et af de foregående krav, kendetegnet ved, at udskifte en hvilken som helst af ekspanderne med to eller flere ekspandere, der er serieforbundet med mellemkøling mellem ekspandertrinnene.
11. System til produktion af underkølet naturgas, der er gjort flydende, ved hjælp af en køleenhed under anvendelse af et enkeltfaset gasformigt kølemiddel, omfattende: to eller tre ekspandere (1-3; 2-3); en kompressorenhed (5-7; 13-18; 5-7; 14-18); en varmevekslerenhed (8) til varmeabsorption fra naturgas; og en varmeafvisningsenhed (10-12; 19-24; 10-12; 20-24), kendetegnet ved, at: ekspanderne (1-3; 2-3) er anbragt i to eller tre ekspander-sløjfer, hvor hver ekspander styres uafhængigt; alle ekspander-sløjferne omfatter det samme kølemiddel; et udvidet kølemiddelflowfra en respektiv ekspander (1-3; 2-3) passeres ind i varmevekslerenheden (8), hvor varmevekslerenheden (8) omfatter individuelle veje til afoverophedning, kondensering og afkøling af den tætte fase og underkøling, hvor hver vej er ved et masseflow og temperaturniveau, der er tilpasset til afoverophedning, kondensering eller afkøling af den tætte fase og underkøling af naturgas; og kølemidlet til den respektive ekspander (1-3; 2-3) tilvejebringes i et komprimeret flow ved hjælp af kompressorenheden (5-7; 13-18; 5-7; 14-18) med kompressorer eller kompressortrin, der muliggør tilpassede indløbs- og udløbstryk til den respektive ekspander.
12. System ifølge krav 11, kendetegnet ved, at ekspanderne (1-3; 2-3) er forbundet med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed med separate ekspander-sløjfer (52, 51, 56, 55, 60, 59; 56, 55, 60, 59).
13. System ifølge krav 11, kendetegnet ved, at ekspanderne (1-3; 2-3) er forbundet med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at forene kolde strømme i ekspander-sløjferne (52, 56) i forbindelse med varmevekslerenheden (8).
14. System ifølge krav 11, kendetegnet ved, at ekspanderne (1-3; 2-3) er forbundet med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at opdele varme strømme i ekspander-sløjferne (51, 56) i forbindelse med varmevekslerenheden (8) opstrøms for ekspanderne (1-3; 2-3).
15. System ifølge krav 11, kendetegnet ved, at ekspanderne (1-3; 2-3) er forbundet med kompressorenheden (5-7) for fluidisk at danne en integreret køleenhed ved at opdele varme strømme (51, 55) opstrøms for ekspanderne (1 -3; 2-3) og forene kolde strømme (52, 56) i forbindelse med varmevekslerenheden (8).
16. System ifølge krav 11, kendetegnet ved, at hver ekspander (1-3; 2-3) er forbundet med kompressorenheden (13- 18; 14-18) forfluidisk at danne separate kølecyklusser.
17. System ifølge krav 11, 12 og 13, kendetegnet ved at styre kølekapaciteter ved at variere en kølemiddelbeholdning.
18. System ifølge krav 11 og 12, kendetegnet ved at variere kølekapaciteterne uafhængigt i hver cyklus ved separat beholdningsstyring.
19. System ifølge et af de foregående krav, kendetegnet ved at styre kølekapaciteterne ved kompressorhastighedsstyring.
20. System ifølge et af de foregående krav, kendetegnet ved, at udskifte en hvilken som helst af ekspanderne med to eller flere ekspandere, der er serieforbundet med mellemkøling mellem ekspandertrinnene.
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NO20083740A NO331740B1 (no) | 2008-08-29 | 2008-08-29 | Fremgangsmate og system for optimalisert LNG produksjon |
PCT/NO2009/000302 WO2010024691A2 (en) | 2008-08-29 | 2009-08-27 | Method and system for optimized lng production |
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DK2331897T3 true DK2331897T3 (da) | 2016-08-22 |
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DK09788380.5T DK2331897T3 (da) | 2008-08-29 | 2009-08-27 | Fremgangsmåde og system til optimeret LNG-produktion |
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US (1) | US9163873B2 (da) |
EP (1) | EP2331897B1 (da) |
AU (1) | AU2009286189B2 (da) |
BR (1) | BRPI0917353B1 (da) |
DK (1) | DK2331897T3 (da) |
ES (1) | ES2586313T3 (da) |
NO (1) | NO331740B1 (da) |
PL (1) | PL2331897T3 (da) |
WO (1) | WO2010024691A2 (da) |
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Also Published As
Publication number | Publication date |
---|---|
WO2010024691A3 (en) | 2012-01-19 |
NO331740B1 (no) | 2012-03-12 |
US20110203312A1 (en) | 2011-08-25 |
NO20083740L (no) | 2010-03-01 |
BRPI0917353B1 (pt) | 2020-04-22 |
BRPI0917353A2 (pt) | 2015-11-17 |
PL2331897T3 (pl) | 2017-05-31 |
WO2010024691A2 (en) | 2010-03-04 |
ES2586313T3 (es) | 2016-10-13 |
AU2009286189B2 (en) | 2013-07-18 |
CN102239377A (zh) | 2011-11-09 |
EP2331897A2 (en) | 2011-06-15 |
US9163873B2 (en) | 2015-10-20 |
EP2331897B1 (en) | 2016-05-18 |
AU2009286189A1 (en) | 2010-03-04 |
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