CN204705105U - A kind of natural gas liquefaction device of sledge dress - Google Patents
A kind of natural gas liquefaction device of sledge dress Download PDFInfo
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- CN204705105U CN204705105U CN201520372401.XU CN201520372401U CN204705105U CN 204705105 U CN204705105 U CN 204705105U CN 201520372401 U CN201520372401 U CN 201520372401U CN 204705105 U CN204705105 U CN 204705105U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 239000003345 natural gas Substances 0.000 title claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 174
- 238000005057 refrigeration Methods 0.000 claims abstract description 74
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000003507 refrigerant Substances 0.000 claims description 83
- 239000004215 Carbon black (E152) Substances 0.000 claims description 20
- 229930195733 hydrocarbon Natural products 0.000 claims description 20
- 150000002430 hydrocarbons Chemical class 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- F25J1/003—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
- F25J1/003—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
- F25J1/0052—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 vaporising a liquid refrigerant stream
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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
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/008—Hydrocarbons
- F25J1/0092—Mixtures of hydrocarbons comprising possibly also minor amounts of 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
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0095—Oxides of carbon, e.g. CO2
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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
- F25J1/0211—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 multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
- F25J1/0217—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 multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as at least a three level refrigeration cascade with at least one MCR cycle
- F25J1/0218—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 multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as at least a three level refrigeration cascade with at least one MCR cycle with one or more SCR cycles, e.g. with a C3 pre-cooling 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
- F25J1/0243—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
- F25J1/0259—Modularity and arrangement of parts of the liquefaction unit and in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
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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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
Landscapes
- 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)
Abstract
The utility model relates to the natural gas liquefaction device of a kind of sledge dress, it is characterized in that: it comprises a chilldown system sled block, block prized by an ice chest, a liquefaction system sled block and crosses cooling system sled block, chilldown system sled block connects ice chest sled block by pipeline, and ice chest sled block connects liquefaction system sled block respectively by pipeline and crosses cooling system sled block, wherein, chilldown system sled block is that the equipment Pipe-Line comprised by pre-cooling cycle system assembles alone, ice chest sled block is that the equipment Pipe-Line comprised by natural gas liquefaction system assembles alone, liquefaction system sled block is that the equipment Pipe-Line comprised by liquid gas expansion refrigeration system assembles alone, crossing cooling system sled block is that the equipment Pipe-Line comprised by supercool gas expansion refrigeration system assembles alone, each independent sledge block is assembled into a whole set of skid-mounted unit again, therefore this skid-mounted unit is convenient to transport and is installed, can be widely used in the liquefaction production process of sea and land small gas fields natural gas.
Description
Technical field
The utility model relates to land and offshore natural gas production field, particularly about the natural gas liquefaction device that a kind of sledge fills.
Background technology
In recent years, growing along with clean energy resource consumption figures such as natural gases, the natural gas extraction field of China has extended to coal bed gas field and offshore natural gas field.But no matter be coal bed gas resource or offshore natural gas resource, all comprise quite a few dispersion source of the gas, for this part natural gas resource, develop according to traditional development scheme, exploitation will cannot be dropped into because of cost restriction in a lot of little gas field.Adopt novel natural gas production technique, can according to the production status flexible configuration liquefying plant in target gas field, process of first natural gas being liquefied on the spot, then be transported to destination, this, to the land and marine small gas fields exploitation of promotion China, improves energy utilization rate significant.For accelerating mini gas field exploitation paces, need to provide device that is land and natural gas liquefaction production and application on maritime floating platform.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of natural gas liquefaction device of the sledge dress being convenient to transport and install.
For achieving the above object, the utility model takes following technical scheme: a kind of natural gas liquefaction device of sledge dress, is characterized in that: it comprises a chilldown system sled block, block prized by an ice chest, a liquefaction system sled block and crosses cooling system sled block; Described chilldown system is prized block and is connected described ice chest sled block by pipeline, and described ice chest sled block connects described liquefaction system sled block respectively by pipeline and described cooling system of crossing prizes block; Wherein, described chilldown system sled block is that the equipment Pipe-Line comprised by pre-cooling cycle system assembles alone, described ice chest sled block is that the equipment Pipe-Line comprised by natural gas liquefaction system assembles alone, described liquefaction system sled block is that the equipment Pipe-Line comprised by liquid gas expansion refrigeration system assembles alone, and the described sled of cooling system excessively block is that the equipment Pipe-Line comprised by supercool gas expansion refrigeration system assembles alone.
Described pre-cooling cycle system comprises refrigerant compressor, the first compressor aftercooler, the first cryogen inlet buffer, the second cryogen inlet buffer, the second compressor aftercooler, cryogen outlet surge tank, the first cryogen separator and the second cryogen separator; Described refrigerant compressor is two-stage compressor, the outlet of the stage compressor of described refrigerant compressor connects the entrance of described second cryogen inlet buffer by described first compressor aftercooler, the outlet of described second cryogen inlet buffer connects the split-compressor entrance of described refrigerant compressor, and split-compressor outlet connects described cryogen outlet surge tank by described second compressor aftercooler; The cryogen export pipeline of described cryogen outlet surge tank connects described first cryogen separator by a choke valve, first export pipeline of described first cryogen separator is by getting back to described first cryogen separator after the precooling zone heat exchanger of described natural gas liquefaction system, the cryogen in pipeline provides cold for described natural gas liquefaction system; Second export pipeline of described first cryogen separator connects the entrance pipe of described second cryogen separator by a choke valve, the 3rd export pipeline of described first cryogen separator connects described second cryogen inlet buffer; Cryogen first export pipeline of described second cryogen separator is by getting back to described second cryogen separator after the precooling zone heat exchanger of described natural gas liquefaction system, the refrigerant medium in pipeline provides cold for described natural gas liquefaction system; Second export pipeline of described second cryogen separator connects the entrance of described first cryogen inlet buffer, an outlet of described first cryogen inlet buffer connects the stage compressor entrance of described refrigerant compressor, and another outlet connects described second compressor aftercooler; The top of described cryogen outlet surge tank is provided with an entrance pipe and an export pipeline for adding and discharge cryogen.
Described natural gas liquefaction system comprises precooling zone heat exchanger, liquefaction heat exchanger, crosses cold heat exchanger and heavy hydrocarbon separator, first gas inlet of described precooling zone heat exchanger connects outside gas plant, first gas outlet of described precooling zone heat exchanger connects the first gas inlet of described liquefaction heat exchanger, first gas outlet of described liquefaction heat exchanger connects the entrance of described heavy hydrocarbon separator by the first export pipeline of described liquefaction heat exchanger, first export pipeline of described heavy hydrocarbon separator connects external device, second export pipeline of described heavy hydrocarbon separator connects the second gas inlet of described liquefaction heat exchanger, second gas outlet pipeline of described liquefaction heat exchanger connects described the first gas inlet crossing cold heat exchanger, described the first gas outlet crossing cold heat exchanger connects extraneous storage facilities by LNG export pipeline, first entrance of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, first entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, second entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the second export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, 3rd entrance of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, and the 3rd export pipeline of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, 4th entrance connection of described liquefaction heat exchanger is described crosses cold heat exchanger, and the 4th outlet of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, described the first entrance crossing cold heat exchanger connected described cold air expansion refrigeration system, and described first outlet of crossing cold heat exchanger connects the 4th entrance of described liquefaction heat exchanger.
Described liquid gas expansion refrigeration system comprises refrigerant gas suction port of compressor surge tank, refrigerant gas compressor, the 3rd compressor aftercooler, the 4th compressor aftercooler, inlet buffer, turbo-expander, aftercooler, wherein, described refrigerant gas compressor is two-stage compressor, the outlet of the stage compressor of described refrigerant gas compressor connects the entrance of the split-compressor of described refrigerant gas compressor by described 3rd compressor aftercooler, the outlet of the split-compressor of described refrigerant gas compressor connects described 4th compressor aftercooler entrance, the export pipeline of described 4th compressor aftercooler connects the entrance of described inlet buffer, the outlet of described inlet buffer connects the first entrance of described turbo-expander, first export pipeline of described turbo-expander connects the entrance of described aftercooler, first export pipeline of described aftercooler connects the first entrance of described precooling zone heat exchanger, second export pipeline of described aftercooler connects the first entrance of described liquefaction heat exchanger, first export pipeline of described liquefaction heat exchanger connects the second entrance of described turbo-expander, second entrance of described turbo-expander is connected in parallel the first export pipeline of described precooling zone heat exchanger simultaneously, second export pipeline of described turbo-expander connects the second entrance of described liquefaction heat exchanger, and the second export pipeline of described liquefaction heat exchanger connects the entrance of described refrigerant gas suction port of compressor surge tank.
Described supercool gas expansion refrigeration system comprises super cooled sect refrigerant gas suction port of compressor surge tank, super cooled sect refrigerant gas compressor, the 5th compressor aftercooler, the 6th compressor aftercooler, super cooled sect inlet buffer, super cooled sect turbo-expander, super cooled sect aftercooler, wherein, described super cooled sect refrigerant gas compressor is two-stage compressor, the outlet of the stage compressor of described super cooled sect refrigerant gas compressor connects the entrance of the split-compressor of described super cooled sect refrigerant gas compressor by described 5th compressor aftercooler, the outlet of the split-compressor of described super cooled sect refrigerant gas compressor connects the entrance of described 6th compressor aftercooler, the export pipeline of described 6th compressor aftercooler connects the entrance of described super cooled sect inlet buffer, the outlet of described super cooled sect inlet buffer connects the first entrance of described super cooled sect turbo-expander, first export pipeline of described super cooled sect turbo-expander connects the entrance of described super cooled sect aftercooler, the outlet of described super cooled sect aftercooler connects the 3rd entrance of described liquefaction heat exchanger, 3rd export pipeline of described liquefaction heat exchanger connects the second entrance of described super cooled sect turbo-expander, second export pipeline of described super cooled sect turbo-expander connects described the first entrance crossing cold heat exchanger, the entrance of described super cooled sect refrigerant gas suction port of compressor surge tank connects the 4th outlet of described liquefaction heat exchanger, and the outlet of described super cooled sect refrigerant gas suction port of compressor surge tank connects the entrance of the stage compressor of described super cooled sect refrigerant gas compressor.
The intrasystem cryogen of described pre-cooling cycle adopts propane or carbon dioxide or freon.
Described precooling zone heat exchanger, liquefaction heat exchanger and mistake cold heat exchanger adopt plate-fin heat exchanger or wound tube heat exchanger.
Refrigerant gas in described liquid gas expansion refrigeration system and described supercool gas expansion refrigeration system adopts nitrogen or nitrogen and methane mixture.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model comprises chilldown system sled block, ice chest sled block, liquefaction system sled block and crosses cooling system sled block, the equipment that pre-cooling cycle system, natural gas liquefaction system, liquid gas expansion refrigeration system and supercool gas expansion refrigeration system comprise is assembled into separately sledge block, each independent sledge block is assembled into a whole set of skid-mounted unit again, and therefore this skid-mounted unit is convenient to transport and is installed.2, the utility model comprises pre-cooling cycle system, liquid gas expansion refrigeration system and supercool gas expansion refrigeration system three and overlaps refrigeration system, and it is separate between three cover refrigeration systems, be independent of each other, therefore the utility model has adaptable, the feature that liquefaction efficiency is high.3, the utility model comprises precooling zone heat exchanger, liquefaction heat exchanger and crosses cold heat exchanger, and therefore heat exchange area is larger, and the refrigerating efficiency of refrigeration system is higher.Therefore the utility model can be widely used in the liquefaction production process of sea and land small gas fields natural gas.
Accompanying drawing explanation
Fig. 1 is sledge of the present utility model dress natural gas liquefaction device structural representation.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the natural gas liquefaction device of sledge dress of the present utility model comprises a chilldown system sled block, block prized by an ice chest, a liquefaction system sled block and crosses cooling system sled block; Chilldown system sled block connects ice chest sled block by pipeline, and ice chest sled block connects liquefaction system sled block respectively by pipeline and crosses cooling system sled block; Wherein, chilldown system sled block is that the equipment Pipe-Line comprised by pre-cooling cycle system A assembles alone, ice chest sled block is that the equipment Pipe-Line comprised by natural gas liquefaction system B assembles alone, liquefaction system sled block is that the equipment Pipe-Line comprised by liquid gas expansion refrigeration system C assembles alone, and crossing cooling system sled block is that the equipment Pipe-Line comprised by supercool gas expansion refrigeration system D assembles alone.
In a preferred embodiment, pre-cooling cycle system A comprises refrigerant compressor 1, first compressor aftercooler 2, first cryogen inlet buffer 3, second cryogen inlet buffer 4, second compressor aftercooler 5, cryogen outlet surge tank 6, first cryogen separator 7 and the second cryogen separator 8; Refrigerant compressor 1 is two-stage compressor, the outlet of the stage compressor of refrigerant compressor 1 connects the entrance of the second cryogen inlet buffer 4 by the first compressor aftercooler 2, the outlet of the second cryogen inlet buffer 4 connects the split-compressor entrance of refrigerant compressor 1, and split-compressor outlet connects cryogen outlet surge tank 6 by the second compressor aftercooler 5; The cryogen export pipeline a of cryogen outlet surge tank 6 connects the first cryogen separator 7 by a choke valve, first export pipeline b of the first cryogen separator 7 is by getting back to the first cryogen separator 7 after the precooling zone heat exchanger 9 of natural gas liquefaction system B, and the cryogen in pipeline provides cold for natural gas liquefaction system B; Second export pipeline c of the first cryogen separator 7 connects the entrance pipe of the second cryogen separator 8 by a choke valve, the 3rd export pipeline d of the first cryogen separator 7 connects the second cryogen inlet buffer 4; The cryogen first export pipeline e of the second cryogen separator 8 is by getting back to the second cryogen separator 8 after the precooling zone heat exchanger 9 of natural gas liquefaction system B, and the refrigerant medium in pipeline provides cold for natural gas liquefaction system B; Second export pipeline f of the second cryogen separator 8 connects the entrance of the first cryogen inlet buffer 3, and an outlet of the first cryogen inlet buffer 3 connects the stage compressor entrance of refrigerant compressor 1, another outlet connection second compressor aftercooler 5; The top of cryogen outlet surge tank 6 is provided with an entrance pipe and an export pipeline for adding and discharge cryogen; Wherein, refrigerant compressor 1 is for compressing precooling cryogen, first compressor aftercooler 2 and the second compressor aftercooler 5 are for the high temperature cryogen after cooled compressed, first export pipeline b of the first cryogen separator 7 and the second cryogen separator 8 cryogen first export pipeline e is used for providing cold, the natural gas of precooling natural gas liquefaction system B inside and refrigerant gas for natural gas liquefaction system B.
In a preferred embodiment, natural gas liquefaction system B comprises precooling zone heat exchanger 9, liquefaction heat exchanger 10, crosses cold heat exchanger 11 and heavy hydrocarbon separator 12, first gas inlet of precooling zone heat exchanger 9 connects outside gas plant, first gas outlet of precooling zone heat exchanger 9 connects the first gas inlet of liquefaction heat exchanger 10, first gas outlet of liquefaction heat exchanger 10 connects the entrance of heavy hydrocarbon separator 12 by the first export pipeline g of liquefaction heat exchanger 10, first export pipeline i of heavy hydrocarbon separator 12 connects external device, second export pipeline h of heavy hydrocarbon separator 12 connects the second gas inlet of liquefaction heat exchanger 10, second gas outlet pipeline l of liquefaction heat exchanger 10 connected the first gas inlet of cold heat exchanger 11, the first gas outlet crossing cold heat exchanger 11 connects extraneous storage facilities by LNG export pipeline, first entrance connecting fluid oxidizing gases expansion refrigeration system C of precooling zone heat exchanger 9, the first export pipeline n connecting fluid oxidizing gases expansion refrigeration system C of precooling zone heat exchanger 9, first entrance connecting fluid oxidizing gases expansion refrigeration system C of liquefaction heat exchanger 10, the first export pipeline m connecting fluid oxidizing gases expansion refrigeration system C of liquefaction heat exchanger 10, second entrance connecting fluid oxidizing gases expansion refrigeration system C of liquefaction heat exchanger 10, the second export pipeline o connecting fluid oxidizing gases expansion refrigeration system C of liquefaction heat exchanger 10, 3rd entrance of liquefaction heat exchanger 10 connects supercool gas expansion refrigeration system D, and the 3rd export pipeline p of liquefaction heat exchanger 10 connects supercool gas expansion refrigeration system, 4th entrance of liquefaction heat exchanger 10 connected cold heat exchanger 11, and the 4th outlet of liquefaction heat exchanger 10 connects supercool gas expansion refrigeration system, the first entrance crossing cold heat exchanger 11 connects supercool gas expansion refrigeration system D, and first outlet of crossing cold heat exchanger 11 connects the 4th entrance of liquefaction heat exchanger 10, wherein, heavy hydrocarbon separator 12, for separating of falling heavy hydrocarbon composition in natural gas, prevents it from blocking follow-up heat exchanger runner.
In a preferred embodiment, liquid gas expansion refrigeration system C comprises refrigerant gas suction port of compressor surge tank 13, refrigerant gas compressor 14, the 3rd compressor aftercooler 15, the 4th compressor aftercooler 16, inlet buffer 17, turbo-expander 18, aftercooler 19, wherein, refrigerant gas compressor 14 is two-stage compressor, the outlet of the stage compressor of refrigerant gas compressor 14 connects the entrance of the split-compressor of refrigerant gas compressor 14 by the 3rd compressor aftercooler 15, the outlet of the split-compressor of refrigerant gas compressor 14 connects the 4th compressor aftercooler 16 entrance, the export pipeline q of the 4th compressor aftercooler 16 connects the entrance of inlet buffer 17, the outlet of inlet buffer 17 connects the first entrance of turbo-expander 18, first export pipeline r of turbo-expander 18 connects the entrance of aftercooler 19, first export pipeline t of aftercooler 19 connects the first entrance of precooling zone heat exchanger 9, second export pipeline u of aftercooler 19 connects the first entrance of liquefaction heat exchanger 10, first export pipeline m of liquefaction heat exchanger 10 connects the second entrance of turbo-expander 18, second entrance of turbo-expander 18 is connected in parallel the first export pipeline n of precooling zone heat exchanger 9 simultaneously, second export pipeline s of turbo-expander 18 connects the second entrance of liquefaction heat exchanger 10, and the second export pipeline o of liquefaction heat exchanger 10 connects the entrance of refrigerant gas suction port of compressor surge tank 13, wherein, turbo-expander 18 is booster expansion turbine, internal refrigeration storage element is turbo-expander, inner compressor is supercharger, the work done during compression of turbo-expander 18 comes from internal expansion machine, can save system energy consumption, the refrigerant gas in turbo-expander 18 export pipeline s provides cold for the refrigerant gas in natural gas, liquid gas expansion refrigeration system C and supercool gas expansion refrigeration system D in liquefaction heat exchanger 10.
In a preferred embodiment, supercool gas expansion refrigeration system D comprises super cooled sect refrigerant gas suction port of compressor surge tank 20, super cooled sect refrigerant gas compressor the 21, the 5th compressor aftercooler 22, the 6th compressor aftercooler 23, super cooled sect inlet buffer 24, super cooled sect turbo-expander 25, super cooled sect aftercooler 26, wherein, super cooled sect refrigerant gas compressor 21 is two-stage compressor, the outlet of the stage compressor of super cooled sect refrigerant gas compressor 21 connects the entrance of the split-compressor of super cooled sect refrigerant gas compressor 21 by the 5th compressor aftercooler 22, the outlet of the split-compressor of super cooled sect refrigerant gas compressor 21 connects the entrance of the 6th compressor aftercooler 23, the export pipeline v of the 6th compressor aftercooler 23 connects the entrance of super cooled sect inlet buffer 24, the outlet of super cooled sect inlet buffer 24 connects the first entrance of super cooled sect turbo-expander 25, first export pipeline w of super cooled sect turbo-expander 25 connects the entrance of super cooled sect aftercooler 26, the outlet of super cooled sect aftercooler 26 connects the 3rd entrance of liquefaction heat exchanger 10, 3rd export pipeline p of liquefaction heat exchanger 10 connects the second entrance of super cooled sect turbo-expander 25, second export pipeline x of super cooled sect turbo-expander 25 connected the first entrance of cold heat exchanger 11, the entrance of super cooled sect refrigerant gas suction port of compressor surge tank 20 connects the 4th outlet of liquefaction heat exchanger 10, and the outlet of super cooled sect refrigerant gas suction port of compressor surge tank 20 connects the entrance of the stage compressor of super cooled sect refrigerant gas compressor 21, wherein, the work done during compression of super cooled sect turbo-expander 25 comes from internal expansion machine, can save system energy consumption.
In a preferred embodiment, the cryogen in pre-cooling cycle system A can adopt propane or carbon dioxide or freon class material.
In a preferred embodiment, precooling zone heat exchanger 9, liquefaction heat exchanger 10 and mistake cold heat exchanger 11 can adopt plate-fin heat exchanger or wound tube heat exchanger.
In a preferred embodiment, the refrigerant gas in liquid gas expansion refrigeration system C and supercool gas expansion refrigeration system D can adopt nitrogen or nitrogen and methane mixture.
Be described in detail to the natural gas liquefaction device operation principle that sledge of the present utility model fills below pipeline pipeline pipeline, detailed process is:
By pipeline, chilldown system is prized block before using, block prized by ice chest, block prized by liquefaction system and cross cooling system sled block and be assembled into a whole set of natural gas liquefaction device.
Natural gas enters natural gas liquefaction system B by the first gas inlet of precooling zone heat exchanger 9, precooling is carried out in precooling zone heat exchanger 9, natural gas after precooling enters in liquefaction heat exchanger 10 lowers the temperature further, natural gas after cooling enters heavy hydrocarbon separator 12 and separates the natural gas that heavy hydrocarbon obtains light component, light component natural gas comes back in liquefaction heat exchanger 10 and carries out further cooling liquid, and the natural gas of cooling liquid entered after cold heat exchanger 11 carried out cold treatment and enters follow-up storage tank.
Pre-cooling cycle system A is two-stage throttle refrigeration system, cryogen through refrigerant compressor 1 compress and the first compressor aftercooler 2 and the second compressor aftercooler 5 cooling and after throttling refrigeration, enter the first cryogen separator 7 and the second cryogen separator 8, and provide cold by the precooling zone heat exchanger 9 that the first export pipeline e of the first cryogen separator 7 first export pipeline b and the second cryogen separator 8 is natural gas liquefaction system B;
Refrigerant gas in liquid gas expansion refrigeration system C in refrigerant gas compressor 14 and turbo-expander 18 supercharger compression and by the 3rd compressor aftercooler 15, after 4th compressor aftercooler 16 and aftercooler 19 cool, a part enters precooling zone heat exchanger 9 through the first export pipeline t of aftercooler 19 and cools, another part enters liquefaction heat exchanger 10 through the second export pipeline u of aftercooler 19 and cools, cooled two parts refrigerant gas enters turbo-expander 18 respectively through the first export pipeline n of precooling zone heat exchanger 9 and the first export pipeline m of liquefaction heat exchanger 10 and carries out expansion cooling, refrigerant gas after cooling enters liquefaction heat exchanger 10 for the natural gas in liquefaction heat exchanger 10 and refrigerant gas provides cold.
Refrigerant gas in supercool gas expansion refrigeration system D through the compressor compresses in super cooled sect refrigerant gas compressor 21 and super cooled sect turbo-expander 25 and through the 5th compressor aftercooler 22, the 6th compressor aftercooler 23 and super cooled sect aftercooler 26 cooling after, enter liquefaction heat exchanger 10 to cool, cooled refrigerant gas successively entered cold heat exchanger 11 and liquefaction heat exchanger 10 for its inside refrigerant gas through the second export pipeline x of super cooled sect turbo-expander 25 and provided cold after super cooled sect turbo-expander 25 expands cooling.
The various embodiments described above are only for illustration of the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (9)
1. a natural gas liquefaction device for sledge dress, is characterized in that: it comprises a chilldown system sled block, block prized by an ice chest, a liquefaction system sled block and crosses cooling system sled block; Described chilldown system is prized block and is connected described ice chest sled block by pipeline, and described ice chest sled block connects described liquefaction system sled block respectively by pipeline and described cooling system of crossing prizes block; Wherein, described chilldown system sled block is that the equipment Pipe-Line comprised by pre-cooling cycle system assembles alone, described ice chest sled block is that the equipment Pipe-Line comprised by natural gas liquefaction system assembles alone, described liquefaction system sled block is that the equipment Pipe-Line comprised by liquid gas expansion refrigeration system assembles alone, and the described sled of cooling system excessively block is that the equipment Pipe-Line comprised by supercool gas expansion refrigeration system assembles alone.
2. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1, is characterized in that: described pre-cooling cycle system comprises refrigerant compressor, the first compressor aftercooler, the first cryogen inlet buffer, the second cryogen inlet buffer, the second compressor aftercooler, cryogen outlet surge tank, the first cryogen separator and the second cryogen separator; Described refrigerant compressor is two-stage compressor, the outlet of the stage compressor of described refrigerant compressor connects the entrance of described second cryogen inlet buffer by described first compressor aftercooler, the outlet of described second cryogen inlet buffer connects the split-compressor entrance of described refrigerant compressor, and split-compressor outlet connects described cryogen outlet surge tank by described second compressor aftercooler; The cryogen export pipeline of described cryogen outlet surge tank connects described first cryogen separator by a choke valve, first export pipeline of described first cryogen separator is by getting back to described first cryogen separator after the precooling zone heat exchanger of described natural gas liquefaction system, the cryogen in pipeline provides cold for described natural gas liquefaction system; Second export pipeline of described first cryogen separator connects the entrance pipe of described second cryogen separator by a choke valve, the 3rd export pipeline of described first cryogen separator connects described second cryogen inlet buffer; Cryogen first export pipeline of described second cryogen separator is by getting back to described second cryogen separator after the precooling zone heat exchanger of described natural gas liquefaction system, the refrigerant medium in pipeline provides cold for described natural gas liquefaction system; Second export pipeline of described second cryogen separator connects the entrance of described first cryogen inlet buffer, an outlet of described first cryogen inlet buffer connects the stage compressor entrance of described refrigerant compressor, and another outlet connects described second compressor aftercooler; The top of described cryogen outlet surge tank is provided with an entrance pipe and an export pipeline for adding and discharge cryogen.
3. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1, is characterized in that: described natural gas liquefaction system comprises precooling zone heat exchanger, liquefaction heat exchanger, crosses cold heat exchanger and heavy hydrocarbon separator, first gas inlet of described precooling zone heat exchanger connects outside gas plant, first gas outlet of described precooling zone heat exchanger connects the first gas inlet of described liquefaction heat exchanger, first gas outlet of described liquefaction heat exchanger connects the entrance of described heavy hydrocarbon separator by the first export pipeline of described liquefaction heat exchanger, first export pipeline of described heavy hydrocarbon separator connects external device, second export pipeline of described heavy hydrocarbon separator connects the second gas inlet of described liquefaction heat exchanger, second gas outlet pipeline of described liquefaction heat exchanger connects described the first gas inlet crossing cold heat exchanger, described the first gas outlet crossing cold heat exchanger connects extraneous storage facilities by LNG export pipeline, first entrance of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, first entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, second entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the second export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, 3rd entrance of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, and the 3rd export pipeline of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, 4th entrance connection of described liquefaction heat exchanger is described crosses cold heat exchanger, and the 4th outlet of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, described the first entrance crossing cold heat exchanger connected described cold air expansion refrigeration system, and described first outlet of crossing cold heat exchanger connects the 4th entrance of described liquefaction heat exchanger.
4. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 2, is characterized in that: described natural gas liquefaction system comprises precooling zone heat exchanger, liquefaction heat exchanger, crosses cold heat exchanger and heavy hydrocarbon separator, first gas inlet of described precooling zone heat exchanger connects outside gas plant, first gas outlet of described precooling zone heat exchanger connects the first gas inlet of described liquefaction heat exchanger, first gas outlet of described liquefaction heat exchanger connects the entrance of described heavy hydrocarbon separator by the first export pipeline of described liquefaction heat exchanger, first export pipeline of described heavy hydrocarbon separator connects external device, second export pipeline of described heavy hydrocarbon separator connects the second gas inlet of described liquefaction heat exchanger, second gas outlet pipeline of described liquefaction heat exchanger connects described the first gas inlet crossing cold heat exchanger, described the first gas outlet crossing cold heat exchanger connects extraneous storage facilities by LNG export pipeline, first entrance of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described precooling zone heat exchanger connects described liquid gas expansion refrigeration system, first entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the first export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, second entrance of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, and the second export pipeline of described liquefaction heat exchanger connects described liquid gas expansion refrigeration system, 3rd entrance of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, and the 3rd export pipeline of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, 4th entrance connection of described liquefaction heat exchanger is described crosses cold heat exchanger, and the 4th outlet of described liquefaction heat exchanger connects described supercool gas expansion refrigeration system, described the first entrance crossing cold heat exchanger connected described cold air expansion refrigeration system, and described first outlet of crossing cold heat exchanger connects the 4th entrance of described liquefaction heat exchanger.
5. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described liquid gas expansion refrigeration system comprises refrigerant gas suction port of compressor surge tank, refrigerant gas compressor, the 3rd compressor aftercooler, the 4th compressor aftercooler, inlet buffer, turbo-expander, aftercooler, wherein, described refrigerant gas compressor is two-stage compressor, the outlet of the stage compressor of described refrigerant gas compressor connects the entrance of the split-compressor of described refrigerant gas compressor by described 3rd compressor aftercooler, the outlet of the split-compressor of described refrigerant gas compressor connects described 4th compressor aftercooler entrance, the export pipeline of described 4th compressor aftercooler connects the entrance of described inlet buffer, the outlet of described inlet buffer connects the first entrance of described turbo-expander, first export pipeline of described turbo-expander connects the entrance of described aftercooler, first export pipeline of described aftercooler connects the first entrance of described precooling zone heat exchanger, second export pipeline of described aftercooler connects the first entrance of described liquefaction heat exchanger, first export pipeline of described liquefaction heat exchanger connects the second entrance of described turbo-expander, second entrance of described turbo-expander is connected in parallel the first export pipeline of described precooling zone heat exchanger simultaneously, second export pipeline of described turbo-expander connects the second entrance of described liquefaction heat exchanger, and the second export pipeline of described liquefaction heat exchanger connects the entrance of described refrigerant gas suction port of compressor surge tank.
6. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1 or 2 or 3 or 4, is characterized in that: described supercool gas expansion refrigeration system comprises super cooled sect refrigerant gas suction port of compressor surge tank, super cooled sect refrigerant gas compressor, the 5th compressor aftercooler, the 6th compressor aftercooler, super cooled sect inlet buffer, super cooled sect turbo-expander, super cooled sect aftercooler, wherein, described super cooled sect refrigerant gas compressor is two-stage compressor, the outlet of the stage compressor of described super cooled sect refrigerant gas compressor connects the entrance of the split-compressor of described super cooled sect refrigerant gas compressor by described 5th compressor aftercooler, the outlet of the split-compressor of described super cooled sect refrigerant gas compressor connects the entrance of described 6th compressor aftercooler, the export pipeline of described 6th compressor aftercooler connects the entrance of described super cooled sect inlet buffer, the outlet of described super cooled sect inlet buffer connects the first entrance of described super cooled sect turbo-expander, first export pipeline of described super cooled sect turbo-expander connects the entrance of described super cooled sect aftercooler, the outlet of described super cooled sect aftercooler connects the 3rd entrance of described liquefaction heat exchanger, 3rd export pipeline of described liquefaction heat exchanger connects the second entrance of described super cooled sect turbo-expander, second export pipeline of described super cooled sect turbo-expander connects described the first entrance crossing cold heat exchanger, the entrance of described super cooled sect refrigerant gas suction port of compressor surge tank connects the 4th outlet of described liquefaction heat exchanger, and the outlet of described super cooled sect refrigerant gas suction port of compressor surge tank connects the entrance of the stage compressor of described super cooled sect refrigerant gas compressor.
7. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1 or 2 or 3 or 4, is characterized in that: the intrasystem cryogen of described pre-cooling cycle adopts propane or carbon dioxide or freon.
8. the natural gas liquefaction device of a kind of sledge dress as described in claim 3 or 4, is characterized in that: described precooling zone heat exchanger, liquefaction heat exchanger and mistake cold heat exchanger adopt plate-fin heat exchanger or wound tube heat exchanger.
9. the natural gas liquefaction device of a kind of sledge dress as claimed in claim 1 or 2 or 3 or 4, is characterized in that: the refrigerant gas in described liquid gas expansion refrigeration system and described supercool gas expansion refrigeration system adopts nitrogen or nitrogen and methane mixture.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880023A (en) * | 2015-04-16 | 2015-09-02 | 中国海洋石油总公司 | Skid-mounted natural gas liquefaction device |
| CN108731375A (en) * | 2018-06-24 | 2018-11-02 | 西南石油大学 | A kind of mini gas liquefaction system of carbon dioxide precooling single-stage nitrogen expansion |
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| CN105737515A (en) * | 2016-03-17 | 2016-07-06 | 上海交通大学 | Natural gas liquefaction system and method based on plate heat exchanger and modular mixed refrigerant |
| CN105890281A (en) * | 2016-04-19 | 2016-08-24 | 上海交通大学 | Skid-mounted natural gas liquefaction and purification integrated cold box |
| CN106440656B (en) * | 2016-11-02 | 2022-02-15 | 中国寰球工程有限公司 | Carbon dioxide precooling two-stage nitrogen expansion natural gas liquefaction system |
| CN108224898A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of prying gas reliquefaction installation |
| CN112392558B (en) * | 2019-08-13 | 2024-05-03 | 江苏国富氢能技术装备股份有限公司 | Turbine expansion device for low-temperature gas liquefaction |
| CN114674113A (en) * | 2022-02-27 | 2022-06-28 | 中国石油化工集团公司 | Sled dress formula carbon dioxide tail gas recovery unit |
| CN114777349B (en) * | 2022-06-16 | 2022-09-06 | 中海油能源发展股份有限公司采油服务分公司 | Expansion refrigeration cycle system for preparing supercooling medium |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5931021A (en) * | 1997-06-24 | 1999-08-03 | Shnaid; Isaac | Straightforward method and once-through apparatus for gas liquefaction |
| DE10355935A1 (en) * | 2003-11-29 | 2005-06-30 | Linde Ag | Liquefaction of natural gas comprises heat exchange with coolant or coolant mixture after coolant has been decompressed using two-phase expander |
| US20080141711A1 (en) * | 2006-12-18 | 2008-06-19 | Mark Julian Roberts | Hybrid cycle liquefaction of natural gas with propane pre-cooling |
| FR2938903B1 (en) * | 2008-11-25 | 2013-02-08 | Technip France | PROCESS FOR PRODUCING A LIQUEFIED NATURAL GAS CURRENT SUB-COOLED FROM A NATURAL GAS CHARGE CURRENT AND ASSOCIATED INSTALLATION |
| KR101037277B1 (en) * | 2010-12-02 | 2011-05-26 | 한국가스공사연구개발원 | Natural gas liquefaction process |
| CN103322769B (en) * | 2012-03-20 | 2015-07-08 | 中国海洋石油总公司 | Cascade connecting type liquidizing system of base load type natural gas liquefaction factories |
| CN204705105U (en) * | 2015-04-16 | 2015-10-14 | 中国海洋石油总公司 | A kind of natural gas liquefaction device of sledge dress |
-
2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880023A (en) * | 2015-04-16 | 2015-09-02 | 中国海洋石油总公司 | Skid-mounted natural gas liquefaction device |
| CN108731375A (en) * | 2018-06-24 | 2018-11-02 | 西南石油大学 | A kind of mini gas liquefaction system of carbon dioxide precooling single-stage nitrogen expansion |
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| CN104880023B (en) | 2017-06-23 |
| CN104880023A (en) | 2015-09-02 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: CNOOC Gas & Power Group Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: CNOOC Gas & Power Group |