CN106091574A - Gas liquefaction device with compression heat recovery function and liquefaction method thereof - Google Patents
Gas liquefaction device with compression heat recovery function and liquefaction method thereof Download PDFInfo
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- CN106091574A CN106091574A CN201610390586.6A CN201610390586A CN106091574A CN 106091574 A CN106091574 A CN 106091574A CN 201610390586 A CN201610390586 A CN 201610390586A CN 106091574 A CN106091574 A CN 106091574A
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- water
- gas
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- heat
- temperature water
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- 230000006835 compression Effects 0.000 title claims abstract description 56
- 238000007906 compression Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 288
- 239000003507 refrigerant Substances 0.000 claims abstract description 43
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 218
- 238000005057 refrigeration Methods 0.000 claims description 42
- 238000001816 cooling Methods 0.000 claims description 40
- 239000012530 fluid Substances 0.000 claims description 37
- 238000001704 evaporation Methods 0.000 claims description 16
- 230000008020 evaporation Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000003345 natural gas Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000002309 gasification Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- -1 Hydrogen Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste 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
- F25J1/02—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
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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
- F25J1/0012—Primary atmospheric gases, e.g. air
- F25J1/0015—Nitrogen
-
- 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
- F25J1/0012—Primary atmospheric gases, e.g. air
- F25J1/0017—Oxygen
-
- 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
- F25J1/0012—Primary atmospheric gases, e.g. air
- F25J1/002—Argon
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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
-
- 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
- F25J1/02—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
- F25J1/0225—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 other external refrigeration means not provided before, e.g. heat driven absorption chillers
- F25J1/0227—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 other external refrigeration means not provided before, e.g. heat driven absorption chillers within a 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
- F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
- F25J1/0235—Heat exchange integration
- F25J1/0242—Waste heat recovery, e.g. from heat of compression
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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
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
- F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
- F25J1/0265—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer
- F25J1/0268—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer using a dedicated refrigeration means
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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.
- F25J1/0296—Removal of the heat of compression, e.g. within an inter- or afterstage-cooler against an ambient heat sink
- F25J1/0297—Removal of the heat of compression, e.g. within an inter- or afterstage-cooler against an ambient heat sink using an externally chilled fluid, e.g. chilled water
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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
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
- F25J2220/64—Separating heavy hydrocarbons, e.g. NGL, LPG, C4+ hydrocarbons or heavy condensates in general
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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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/04—Compressor cooling arrangement, e.g. inter- or after-stage cooling or condensate removal
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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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/30—Compression of the feed 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
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/906—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by heat driven absorption chillers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (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 invention discloses a gas liquefaction device with compression heat recovery, which comprises a raw material gas treatment system, a refrigerant treatment system and a compression heat recovery system, and also discloses a liquefaction method of the gas liquefaction device with compression heat recovery. The invention has the beneficial effects that: the low-temperature water is prepared by recovering the compression heat, so that the energy consumption of the liquefaction device is greatly reduced; the low-temperature water tank can also be used for cold storage, low-temperature water or ice can be additionally prepared according to the electricity price difference, and the low-temperature water can be fed only at the peak or peak electricity price, so that the energy consumption of the liquefaction device is further reduced; the method has the advantages of simple operation, low energy consumption, accordance with the great trend of energy conservation and consumption reduction, and good social and economic benefits.
Description
Technical field
The present invention relates to the technical field of gas cryogenic liquefying, the gas liquefaction equipment of a kind of band compression recuperation of heat
And liquifying method.
Background technology
The volume of cryogenic liquid product (liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen and LNG etc.) is little (such as 1m3Liquid oxygen be equivalent to
800Nm3Oxygen, such as 1m3Liquid hydrogen be equivalent to 788Nm3Hydrogen, 1m3LNG be equivalent to 600Nm3Natural gas), it is simple to long
Extensively, liquid hydrogen, LNG etc. are longer as distance travelled during motor vehicle fuel simultaneously for distance transport, radiation areas.Therefore, produce liquid to produce
The liquefying plant of product industrially has very important effect.
The heat of compression of conventional gas liquefying plant is taken away by recirculated water, then is made by circulating water cooling tower cooling Posterior circle
With, the heat of compression wastes and needs to consume a large amount of recirculated water, and the energy consumption causing conventional gas liquefying plant is higher.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that the gas liquefaction equipment of a kind of band compression recuperation of heat
And liquifying method.
The purpose of the present invention is achieved through the following technical solutions: the gas liquefaction equipment of a kind of band compression recuperation of heat, it
Including unstripped gas processing system, refrigerant processes system, heat of compression recovery system；
Described unstripped gas processing system includes feed gas compressor, unstripped gas normal-temperature water cooler, unstripped gas water at low temperature
Cooler, raw material gas purifying unit and gas liquefaction heat exchanger, wherein, unstripped gas input channel is connected with feed gas compressor,
Feed gas compressor connects with unstripped gas normal-temperature water cooler, and unstripped gas normal-temperature water cooler is with unstripped gas water at low temperature cooler even
Logical, unstripped gas water at low temperature cooler connects with raw material gas purifying unit, and raw material gas purifying unit connects with gas liquefaction heat exchanger；
Described refrigerant processes system includes refrigerant compressor, cold-producing medium normal-temperature water cooler, cold-producing medium low temperature water-cooled
But device and gas liquefaction heat exchanger, described refrigerant compressor connects with cold-producing medium normal-temperature water cooler, cold-producing medium room temperature water-cooled
But device connects with cold-producing medium water at low temperature cooler, and cold-producing medium water at low temperature cooler connects with gas liquefaction heat exchanger, described gas
Body liquefaction heat exchanger connects with refrigerant compressor；
Described heat of compression recovery system includes room temperature water pot, room temperature water pump, refrigeration unit and water cooler, and described is normal
Being provided with a plurality of arm on the outlet pipe of warm water tank, wherein, the first arm is connected with room temperature water pump, the second arm and water cooler
Connection, the 3rd arm connects with refrigeration unit, and described cold-producing medium normal-temperature water cooler goes out with unstripped gas normal-temperature water cooler
Water pipe is all connected with refrigeration unit by same pipeline, and is provided with valve on this pipeline, described cold-producing medium low temperature water-cooled
But device is all connected with refrigeration unit by same pipeline with the oral siphon of unstripped gas water at low temperature cooler, and at this pipeline and entering
Being provided with valve on water pipe, described cold-producing medium normal-temperature water cooler all passes through with the oral siphon of unstripped gas normal-temperature water cooler
Same pipeline connects with room temperature water pump, and is provided with valve on this oral siphon, the water outlet of described unstripped gas water at low temperature cooler
Pipe connects with the oral siphon of unstripped gas normal-temperature water cooler, and the outlet pipe of described cold-producing medium water at low temperature cooler is normal with cold-producing medium
The oral siphon connection of warm water cooler.
Unstripped gas heat exchanger channels, high pressure cryogen heat exchanger channels and low pressure cryogen it is provided with in described gas liquefaction heat exchanger
Heat exchanger channels, the entrance of described unstripped gas heat exchanger channels connects with raw material gas purifying unit, the outlet of unstripped gas heat exchanger channels
Being connected with liquid storage tank, the entrance of described high pressure cryogen heat exchanger channels connects with cold-producing medium water at low temperature cooler, and high pressure is cold
The outlet of agent heat exchanger channels connects with the entrance of low pressure cryogen heat exchanger channels, and is provided with cryogen throttling on the pipeline of connection
Valve, the outlet of described low pressure cryogen heat exchanger channels connects with refrigerant compressor.
Being provided with generation side and evaporation side in described refrigeration unit, described one end that side occurs is with to connect cold-producing medium normal
, there is the other end and the water cooler of side in warm water cooler outlet pipe and the pipeline communication of unstripped gas normal-temperature water cooler outlet pipe
Connection, one end of described evaporation side connects with the 3rd arm, the other end of evaporation side with connect cold-producing medium water at low temperature cooler
Oral siphon and the pipeline communication of unstripped gas water at low temperature cooler oral siphon.
On the described pipeline connected with unstripped gas normal-temperature water cooler oral siphon with cryogen normal-temperature water cooler oral siphon
It is additionally provided with low temperature water pot and a low temperature water pump, on this pipeline, is front, described low temperature water pump with the conveying direction of water at low temperature
It is positioned at the downstream of low temperature water pot
A kind of band compresses the liquifying method of the gas liquefaction equipment of recuperation of heat, and it comprises the following steps,
The compression cooling of S1: unstripped gas, unstripped gas is after feed gas compressor supercharging, successively by unstripped gas normal-temperature water cooler
Cooling down with unstripped gas water at low temperature cooler, the heat of compression is taken away by heat transport fluid simultaneously；
S2: unstripped gas liquefies, by the unstripped gas after S1 pre-cooling through raw material gas purifying unit removing wherein easily frozen block or corrosion
Property impurity after, enter gas liquefaction heat exchanger unstripped gas heat exchanger channels in, by low pressure cold of backflowing in gas liquefaction heat exchanger
Agent pre-cooling, liquefaction and supercool after, be re-fed in fluid product basin or rectifying column；
S3: refrigerant compression, cold-producing medium, after refrigerant compressor supercharging, is cooled down by normal-temperature water cooler and water at low temperature successively
Device cools down, and the heat of compression is taken away by heat transport fluid simultaneously；
S4: refrigerant liquefaction, is entered the high pressure cryogen heat exchanger channels of gas liquefaction heat exchanger by the cold-producing medium after S3 pre-cooling
In, low pressure of being backflowed in gas liquefaction heat exchanger cryogen pre-cooling, liquefaction and supercool after, then through cryogen choke valve throttling refrigeration；
S5: cold-producing medium re-heat, the low pressure cryogen being throttled in S4 is back to the low pressure cryogen of gas liquefaction heat exchanger and changes
In the passage of heat, returned the entrance of refrigerant compressor after the gasification of hot-fluid stock, re-heat to room temperature wherein, form a refrigeration and follow
Ring；
S6: heat transport fluid cools down, and the heat transport fluid absorbing the heat of compression in S1 and S3 step enters sending out of refrigeration unit
In raw side, after release heat, the most water cooled but device is cooled and returned in room temperature water pot further；
S7, normal-temperature water, water at low temperature supply, the normal-temperature water come from room temperature water pot is divided into two strands, and one normal-temperature water is through normal-temperature water
Unstripped gas normal-temperature water cooler and the entrance of cold-producing medium normal-temperature water cooler is sent into after pump pressurization；Another burst of normal-temperature water enters refrigeration
In the evaporation side of unit, the water at low temperature that release heat is produced wherein is admitted to unstripped gas water at low temperature cooler and cold-producing medium is low
The entrance of warm water cooler.
A kind of band compresses the liquifying method of the gas liquefaction equipment of recuperation of heat, and it comprises the following steps,
The compression cooling of S1: unstripped gas, unstripped gas is after feed gas compressor supercharging, successively by unstripped gas normal-temperature water cooler
Cooling down with unstripped gas water at low temperature cooler, the heat of compression is taken away by heat transport fluid simultaneously；
S2: unstripped gas liquefies, by the unstripped gas after S1 pre-cooling through raw material gas purifying unit removing wherein easily frozen block or corrosion
Property impurity after, enter gas liquefaction heat exchanger unstripped gas heat exchanger channels in, by low pressure cold of backflowing in gas liquefaction heat exchanger
Agent pre-cooling, liquefaction and supercool after, be re-fed in fluid product basin or rectifying column；
S3: refrigerant compression, cold-producing medium, after refrigerant compressor supercharging, is cooled down by normal-temperature water cooler and water at low temperature successively
Device cools down, and the heat of compression is taken away by heat transport fluid simultaneously；
S4: refrigerant liquefaction, is entered the high pressure cryogen heat exchanger channels of gas liquefaction heat exchanger by the cold-producing medium after S3 pre-cooling
In, low pressure of being backflowed in gas liquefaction heat exchanger cryogen pre-cooling, liquefaction and supercool after, then through cryogen choke valve throttling refrigeration；
S5: cold-producing medium re-heat, the low pressure cryogen being throttled in S4 is back to the low pressure cryogen of gas liquefaction heat exchanger and changes
In the passage of heat, returned the entrance of refrigerant compressor after the gasification of hot-fluid stock, re-heat to room temperature wherein, form a refrigeration and follow
Ring；
S6: heat transport fluid cools down, and the heat transport fluid absorbing the heat of compression in S1 and S3 step enters sending out of refrigeration unit
In raw side, after release heat, the most water cooled but device is cooled and returned in room temperature water pot further；
S7, normal-temperature water supply, the normal-temperature water come from room temperature water pot is divided into two strands, after the pressurization of one normal-temperature water frequent warm water pump
Send into unstripped gas normal-temperature water cooler and the entrance of cold-producing medium normal-temperature water cooler；
S8, water at low temperature supply, another burst of normal-temperature water in S7 enters in the evaporation side of refrigeration unit, discharges heat wherein
The water at low temperature produced is admitted in low temperature water pot, and the water at low temperature in low temperature water pot, after low temperature water pump pressurizes, sends into unstripped gas
Water at low temperature cooler and the entrance of cold-producing medium water at low temperature cooler, be used for reducing compressor inlet temperature at different levels, thus reduce pressure
Contracting power consumption.
The operating temperature of the described high-temperature water after normal-temperature water, water at low temperature and heat transport fluid heat absorption is respectively 20～60
DEG C, 5～30 DEG C, 100～300 DEG C.
Described unstripped gas is one or more in oxygen, nitrogen, hydrogen, natural gas liquefaction or liquid space division, described
Cold-producing medium be air, nitrogen, natural gas, formylmerphalan alkane one or more.
Described feed gas compressor and the progression of refrigerant compressor be 1～4 grade or section, its level or intersegmental and outlet are all
Using normal-temperature water and the cooling of water at low temperature tandem, described refrigeration unit is lithium bromide absorption refrigerating set or absorption refrigeration
With the unit mahine of compression-type refrigeration, described water cooler is one or more of air-cooled, water-cooling type or absorption heat pump.
Described heat transport fluid is for softening water, desalted water, steam, conduction oil, ethylene glycol or methanol aqueous solution.
The invention have the advantages that
1, produce water at low temperature by the recovery heat of compression, the energy consumption of liquefying plant is greatly reduced；
2, low temperature water pot can be also used for cold-storage, can be according to producing water at low temperature or ice outside electricity price difference, it is also possible to only exist
Send into water at low temperature when spike or peak electricity tariff, reduce the energy consumption of liquefying plant further；
3, the present invention have simple to operate, energy consumption is low, meets energy-saving and cost-reducing main trend, have good social benefit and
Economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one；
Fig. 2 is the structural representation of embodiment two；
In figure, 1-low temperature water pump, 2-low temperature water pot, 3-feed gas compressor, 4-refrigerant compressor, 5-cold-producing medium normal-temperature water
Cooler, 6-cold-producing medium water at low temperature cooler, 7-unstripped gas heat exchanger channels, 8-high pressure cryogen heat exchanger channels, 9-low pressure cryogen changes
The passage of heat, 10-room temperature water pot, 11-room temperature water pump, there is side in 12-, 13-evaporation side, 14-refrigeration unit, 15-water cooler,
16-unstripped gas normal-temperature water cooler, 17-unstripped gas water at low temperature cooler, 18-raw material gas purifying unit, 19-gas liquefaction heat exchange
Device, 20-cryogen choke valve.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, and protection scope of the present invention is not limited to the following stated:
Embodiment one:
As it is shown in figure 1, the gas liquefaction equipment of a kind of band compression recuperation of heat, it includes unstripped gas processing system, cold-producing medium
Processing system, heat of compression recovery system；
In the present embodiment, described unstripped gas processing system includes feed gas compressor 3, unstripped gas normal-temperature water cooler
16, unstripped gas water at low temperature cooler 17, raw material gas purifying unit 18 and gas liquefaction heat exchanger 19, wherein, unstripped gas input pipe
Road is connected with feed gas compressor 3, and feed gas compressor 3 connects with unstripped gas normal-temperature water cooler 16, and feed compressor 3 with
One unstripped gas supply line connects, and in the present embodiment, described unstripped gas is oxygen, nitrogen, hydrogen, natural gas liquefaction or liquid
One or more in body space division, unstripped gas normal-temperature water cooler 16 connects with unstripped gas water at low temperature cooler 17, and unstripped gas is low
Warm water cooler 17 connects with raw material gas purifying unit 18, and raw material gas purifying unit 18 connects with gas liquefaction heat exchanger 19,
Being additionally provided with a discharge duct on raw material gas purifying unit 18, discharge duct is mainly used in the discharge of carbon dioxide and water；
In the present embodiment, described refrigerant processes system include refrigerant compressor 4, cold-producing medium normal-temperature water cooler 5,
Cold-producing medium water at low temperature cooler 6 and gas liquefaction heat exchanger 19, described refrigerant compressor 4 and cold-producing medium normal-temperature water cooler 5
Connection, described cold-producing medium be air, nitrogen, natural gas, formylmerphalan alkane one or more, cold-producing medium normal-temperature water cooler 5 with
Cold-producing medium water at low temperature cooler 6 connects, and cold-producing medium water at low temperature cooler 6 connects with gas liquefaction heat exchanger 19, described gas
Liquefaction heat exchanger 19 connects with refrigerant compressor 4；
In the present embodiment, described heat of compression recovery system includes room temperature water pot 10, room temperature water pump 11, refrigeration unit 14
With water cooler 15, the outlet pipe of described room temperature water pot 10 is provided with a plurality of arm, wherein, the first arm and room temperature water pump
11 connect, and the second arm connects with water cooler 15, and the 3rd arm connects with refrigeration unit 14, described cold-producing medium room temperature water-cooled
But device 5 is all connected with refrigeration unit 14 by same pipeline with the outlet pipe of unstripped gas normal-temperature water cooler 16, and at this pipeline
On be provided with valve, described cold-producing medium water at low temperature cooler 6 and the oral siphon of unstripped gas water at low temperature cooler 17 all by with
One pipeline connects with refrigeration unit 14, and is provided with valve on this pipeline and oral siphon, described cold-producing medium room temperature water-cooled
But device 5 is all connected with room temperature water pump 11 by same pipeline with the oral siphon of unstripped gas normal-temperature water cooler 16, and this oral siphon
On be provided with valve, the outlet pipe of described unstripped gas water at low temperature cooler 17 and the oral siphon of unstripped gas normal-temperature water cooler 16
Connection, the outlet pipe of described cold-producing medium water at low temperature cooler 6 connects with the oral siphon of cold-producing medium normal-temperature water cooler 5.
In the present embodiment, be provided with unstripped gas heat exchanger channels 7 in described gas liquefaction heat exchanger 19, high pressure cryogen changes
The passage of heat 8 and low pressure cryogen heat exchanger channels 9, the entrance of described unstripped gas heat exchanger channels 7 connects with raw material gas purifying unit 18,
The outlet liquid storage tank of unstripped gas heat exchanger channels 7 connects, and i.e. i.e. can lead to from unstripped gas heat exchanger channels 7 fluid product out
Cross liquid storage tank to store, it is also possible to enter directly in lower procedure, the entrance of described high pressure cryogen heat exchanger channels 8 and system
Cryogen water at low temperature cooler 6 connects, and the outlet of high pressure cryogen heat exchanger channels 8 connects with the entrance of low pressure cryogen heat exchanger channels 9, and
Being provided with cryogen choke valve 20 on the pipeline of connection, the outlet of described low pressure cryogen heat exchanger channels 9 is with refrigerant compressor 4 even
Logical.
In the present embodiment, the described combination that refrigeration unit 14 is lithium bromide absorption refrigerating set and compression-type refrigeration
Machine, is provided with generation side 12 and evaporation side 13 in it, described one end that side 12 occurs with connect cold-producing medium normal-temperature water cooler 5
, there is the other end of side 12 with water cooler 15 even in outlet pipe and the pipeline communication of unstripped gas normal-temperature water cooler 16 outlet pipe
Logical, one end of described evaporation side 13 connects with the 3rd arm, and the other end of evaporation side 13 cools down with connecting cold-producing medium water at low temperature
Device 6 oral siphon and the pipeline communication of unstripped gas water at low temperature cooler 17 oral siphon.
A kind of band compresses the liquifying method of the gas liquefaction equipment of recuperation of heat, and it comprises the following steps,
The compression cooling of S1: unstripped gas, unstripped gas, after feed gas compressor 3 supercharging, is cooled down by unstripped gas normal-temperature water successively
Device 16 and unstripped gas water at low temperature cooler 17 cool down, and the heat of compression is taken away by heat transport fluid simultaneously；
S2: unstripped gas liquefies, and is removed wherein easily frozen block or corruption by the unstripped gas after S1 pre-cooling through raw material gas purifying unit 18
After erosion property impurity, enter in the unstripped gas heat exchanger channels 7 of gas liquefaction heat exchanger 19, backflowed in gas liquefaction heat exchanger 19
Low pressure cryogen pre-cooling, liquefaction and supercool after, be re-fed in fluid product basin or rectifying column；
S3: refrigerant compression, cold-producing medium is after refrigerant compressor 4 supercharging, successively by normal-temperature water cooler 5 and low temperature water-cooled
But device 6 cools down, and the heat of compression is taken away by heat transport fluid simultaneously；
S4: refrigerant liquefaction, the high pressure cryogen heat exchange being entered gas liquefaction heat exchanger 19 by the cold-producing medium after S3 pre-cooling is led to
In road 8, low pressure of being backflowed in gas liquefaction heat exchanger 19 cryogen pre-cooling, liquefaction and supercool after, then save through cryogen choke valve 20
Stream refrigeration；
S5: cold-producing medium re-heat, the low pressure cryogen being throttled in S4 is back to the low pressure cryogen of gas liquefaction heat exchanger 19
In heat exchanger channels 9, returned the entrance of refrigerant compressor 4 after the gasification of hot-fluid stock, re-heat to room temperature wherein, formed a refrigeration
Circulation；
S6: heat transport fluid cools down, and the heat transport fluid absorbing the heat of compression in S1 and S3 step enters refrigeration unit 14
Occurring in side 12, after release heat, the most water cooled but device 15 is cooled and returned in room temperature water pot 10 further；
S7, normal-temperature water, water at low temperature supply, be divided into two strands from the normal-temperature water of room temperature water pot 10, and one normal-temperature water is through room temperature
Unstripped gas normal-temperature water cooler 16 and the entrance of cold-producing medium normal-temperature water cooler 5 is sent into after water pump 11 pressurization；Another burst of normal-temperature water
Entering in the evaporation side 13 of refrigeration unit 14, the water at low temperature that release heat is produced wherein is admitted to the cooling of unstripped gas water at low temperature
Device 17 and the entrance of cold-producing medium water at low temperature cooler 6, thus water at low temperature is continuously introduced into unstripped gas processing system and refrigerant processes
In system, reduce equipment investment and floor space.
In the present embodiment, the operating temperature of the described high-temperature water after normal-temperature water, water at low temperature and heat transport fluid heat absorption
It is respectively 20～60 DEG C, 5～30 DEG C, 100～300 DEG C.
In the present embodiment, the pressure at expulsion of raw air compressor 3 and refrigerant compressor 4 be respectively 0.5MPa.G and
3.7MPa.G, described feed gas compressor 3 and the progression of refrigerant compressor 4 be 1～4 grade or section, the most all use 2
Level, its level or intersegmental and outlet all employing normal-temperature water and the cooling of water at low temperature tandem.
In the present embodiment, described water cooler is one or more of air-cooled, water-cooling type or absorption heat pump.
In the present embodiment, described heat transport fluid is for softening water, desalted water, steam, conduction oil, ethylene glycol or methanol-water
Solution.
In the present embodiment, as a example by a set of KDON-3000Y/2000Y type liquid space division, with the energy of conventional liq space division
Consumption is compared, shown in day following table, and its energy consumption range of decrease 7.44%, save up to the electricity charge 1,260,000 yuan in year.
Embodiment two:
As in figure 2 it is shown, the device of the present embodiment and embodiment one is substantially the same, difference is, described is normal with cryogen
It is additionally provided with a low temperature water pot 2 on the pipeline that warm water cooler 5 oral siphon connects with unstripped gas normal-temperature water cooler 16 oral siphon
With low temperature water pump 1, on this pipeline, it is positioned at low temperature water pot 2 with the low temperature water pump 1 that the conveying direction of water at low temperature is front, described
Downstream, low temperature water pot 2 can supplement water at low temperature by a water at low temperature supply line, it is ensured that the lasting supply of water at low temperature, so that
Water at low temperature can be continuously introduced in liquefying plant, it is also possible to sends into when spike or peak electricity tariff, and also can be at trough-electricity
Produce water at low temperature by compression refrigerating machine during valency, supplement water at low temperature when spike or peak electricity tariff and send in liquefying plant, enter
One step reduces energy consumption, and the liquifying method of the gas liquefaction equipment of a kind of band compression recuperation of heat in the present embodiment, with reality
The method executing example one is compared, and its step S1～S6 are the most identical, adds two method steps on the basis of S1～S6, it may be assumed that
S7, normal-temperature water supply, be divided into two strands from the normal-temperature water of room temperature water pot 10, and the frequent warm water pump of one normal-temperature water 11 adds
Unstripped gas normal-temperature water cooler 16 and the entrance of cold-producing medium normal-temperature water cooler 5 is sent into after pressure；
S8, water at low temperature supply, another burst of normal-temperature water in S7 enters in the evaporation side 13 of refrigeration unit 14, discharges wherein
The water at low temperature that heat is produced is admitted in low temperature water pot 2, and the water at low temperature in low temperature water pot 2, after low temperature water pump 1 pressurizes, is sent into
Unstripped gas water at low temperature cooler 17 and the entrance of cold-producing medium water at low temperature cooler 6, be used for reducing compressor inlet temperature at different levels, from
And reduce compression power consumption.
Claims (10)
1. the gas liquefaction equipment of a band compression recuperation of heat, it is characterised in that: it includes at unstripped gas processing system, cold-producing medium
Reason system, heat of compression recovery system；
Described unstripped gas processing system includes feed gas compressor (3), unstripped gas normal-temperature water cooler (16), unstripped gas low temperature
Water cooler (17), raw material gas purifying unit (18) and gas liquefaction heat exchanger (19), wherein, unstripped gas input channel and raw material
Air compressor (3) connects, and feed gas compressor (3) connects with unstripped gas normal-temperature water cooler (16), and unstripped gas normal-temperature water cools down
Device (16) connects with unstripped gas water at low temperature cooler (17), unstripped gas water at low temperature cooler (17) and raw material gas purifying unit (18)
Connection, raw material gas purifying unit (18) connects with gas liquefaction heat exchanger (19)；
Described refrigerant processes system includes refrigerant compressor (4), cold-producing medium normal-temperature water cooler (5), cold-producing medium water at low temperature
Cooler (6) and gas liquefaction heat exchanger (19), described refrigerant compressor (4) connects with cold-producing medium normal-temperature water cooler (5),
Cold-producing medium normal-temperature water cooler (5) connects with cold-producing medium water at low temperature cooler (6), cold-producing medium water at low temperature cooler (6) and gas
Liquefaction heat exchanger (19) connects, and described gas liquefaction heat exchanger (19) connects with refrigerant compressor (4)；
Described heat of compression recovery system includes room temperature water pot (10), room temperature water pump (11), refrigeration unit (14) and water cooler
(15), the outlet pipe of described room temperature water pot (10) being provided with a plurality of arm, wherein, the first arm is with room temperature water pump (11) even
Connecing, the second arm connects with water cooler (15), and the 3rd arm connects with refrigeration unit (14), described cold-producing medium room temperature water-cooled
But device (5) is all connected with refrigeration unit (14) by same pipeline with the outlet pipe of unstripped gas normal-temperature water cooler (16), and
Be provided with valve, described cold-producing medium water at low temperature cooler (6) and unstripped gas water at low temperature cooler (17) on this pipeline enters water
Guan Jun is connected with refrigeration unit (14) by same pipeline, and is provided with valve on this pipeline and oral siphon, described system
The oral siphon of cryogen normal-temperature water cooler (5) and unstripped gas normal-temperature water cooler (16) is all by same pipeline and room temperature water pump
(11) connection, and on this oral siphon, it is provided with valve, the outlet pipe of described unstripped gas water at low temperature cooler (17) and unstripped gas
The oral siphon connection of normal-temperature water cooler (16), the outlet pipe of described cold-producing medium water at low temperature cooler (6) and cold-producing medium room temperature
The oral siphon connection of water cooler (5).
The gas liquefaction equipment of a kind of band the most according to claim 1 compression recuperation of heat, it is characterised in that: described gas
Unstripped gas heat exchanger channels (7), high pressure cryogen heat exchanger channels (8) and low pressure cryogen heat exchanger channels it is provided with in liquefaction heat exchanger (19)
(9), the entrance of described unstripped gas heat exchanger channels (7) connects with raw material gas purifying unit (18), unstripped gas heat exchanger channels (7)
Outlet is connected with liquid storage tank, and the entrance of described high pressure cryogen heat exchanger channels (8) is with cold-producing medium water at low temperature cooler (6) even
Logical, the outlet of high pressure cryogen heat exchanger channels (8) connects with the entrance of low pressure cryogen heat exchanger channels (9), and on the pipeline of connection
Being provided with cryogen choke valve (20), the outlet of described low pressure cryogen heat exchanger channels (9) connects with refrigerant compressor (4).
The gas liquefaction equipment of a kind of band the most according to claim 2 compression recuperation of heat, it is characterised in that: described refrigeration
Be provided with generation side (12) and evaporation side (13) in unit (14), one end of described generation side (12) with connect cold-producing medium room temperature
, there is the other end of side (12) in water cooler (5) outlet pipe and the pipeline communication of unstripped gas normal-temperature water cooler (16) outlet pipe
Connecting with water cooler (15), one end of described evaporation side (13) connects with the 3rd arm, the other end of evaporation side (13) with
Connection cold-producing medium water at low temperature cooler (6) oral siphon and the pipeline communication of unstripped gas water at low temperature cooler (17) oral siphon.
The gas liquefaction equipment of a kind of band the most according to claim 3 compression recuperation of heat, it is characterised in that: described with cold
It is additionally provided with one low on the pipeline that agent normal-temperature water cooler (5) oral siphon connects with unstripped gas normal-temperature water cooler (16) oral siphon
Warm water tank (2) and low temperature water pump (1), on this pipeline, be front, described low temperature water pump (1) position with the conveying direction of water at low temperature
Downstream in low temperature water pot (2).
5. the liquifying method of gas liquefaction equipment based on the compression recuperation of heat of a kind of band of any one described in claim 1 ~ 3,
It is characterized in that: it comprises the following steps,
The compression cooling of S1: unstripped gas, unstripped gas is after feed gas compressor (3) supercharging, successively by unstripped gas normal-temperature water cooler
(16) cooling down with unstripped gas water at low temperature cooler (17), the heat of compression is taken away by heat transport fluid simultaneously；
S2: unstripped gas liquefies, by the unstripped gas after S1 pre-cooling through raw material gas purifying unit (18) removing wherein easily frozen block or corrosion
Property impurity after, enter gas liquefaction heat exchanger (19) unstripped gas heat exchanger channels (7) in, quilt in gas liquefaction heat exchanger (19)
Low pressure of backflowing cryogen pre-cooling, liquefaction and supercool after, be re-fed in fluid product basin or rectifying column；
S3: refrigerant compression, cold-producing medium is after refrigerant compressor (4) supercharging, successively by normal-temperature water cooler (5) and low temperature water-cooled
But device (6) cooling, the heat of compression is taken away by heat transport fluid simultaneously；
S4: refrigerant liquefaction, is entered the high pressure cryogen heat exchanger channels of gas liquefaction heat exchanger (19) by the cold-producing medium after S3 pre-cooling
(8) in, low pressure of being backflowed in gas liquefaction heat exchanger (19) cryogen pre-cooling, liquefaction and supercool after, then through cryogen choke valve
(20) throttling refrigeration；
S5: cold-producing medium re-heat, the low pressure cryogen being throttled in S4 is back to the low pressure cryogen of gas liquefaction heat exchanger (19) and changes
In the passage of heat (9), returned the entrance of refrigerant compressor (4) after the gasification of hot-fluid stock, re-heat to room temperature wherein, formed a system
SAPMAC method；
S6: heat transport fluid cools down, and the heat transport fluid absorbing the heat of compression in S1 and S3 step enters sending out of refrigeration unit (14)
In raw side (12), after release heat, the most water cooled but device (15) is cooled and returned in room temperature water pot (10) further；
S7, normal-temperature water, water at low temperature supply, the normal-temperature water come from room temperature water pot (10) is divided into two strands, and one normal-temperature water is through normal-temperature water
Unstripped gas normal-temperature water cooler (16) and the entrance of cold-producing medium normal-temperature water cooler (5) is sent into after pump (11) pressurization；Another stock is normal
Warm water enters in the evaporation side (13) of refrigeration unit (14), and it is low that the water at low temperature that release heat is produced wherein is admitted to unstripped gas
Warm water cooler (17) and the entrance of cold-producing medium water at low temperature cooler (6).
6. the liquifying method of the gas liquefaction equipment of recuperation of heat is compressed based on a kind of band described in claim 4, it is characterised in that:
It comprises the following steps,
The compression cooling of S1: unstripped gas, unstripped gas is after feed gas compressor (3) supercharging, successively by unstripped gas normal-temperature water cooler
(16) cooling down with unstripped gas water at low temperature cooler (17), the heat of compression is taken away by heat transport fluid simultaneously；
S2: unstripped gas liquefies, by the unstripped gas after S1 pre-cooling through raw material gas purifying unit (18) removing wherein easily frozen block or corrosion
Property impurity after, enter gas liquefaction heat exchanger (19) unstripped gas heat exchanger channels (7) in, quilt in gas liquefaction heat exchanger (19)
Low pressure of backflowing cryogen pre-cooling, liquefaction and supercool after, be re-fed in fluid product basin or rectifying column；
S3: refrigerant compression, cold-producing medium is after refrigerant compressor (4) supercharging, successively by normal-temperature water cooler (5) and low temperature water-cooled
But device (6) cooling, the heat of compression is taken away by heat transport fluid simultaneously；
S4: refrigerant liquefaction, is entered the high pressure cryogen heat exchanger channels of gas liquefaction heat exchanger (19) by the cold-producing medium after S3 pre-cooling
(8) in, low pressure of being backflowed in gas liquefaction heat exchanger (19) cryogen pre-cooling, liquefaction and supercool after, then through cryogen choke valve
(20) throttling refrigeration；
S5: cold-producing medium re-heat, the low pressure cryogen being throttled in S4 is back to the low pressure cryogen of gas liquefaction heat exchanger (19) and changes
In the passage of heat (9), returned the entrance of refrigerant compressor (4) after the gasification of hot-fluid stock, re-heat to room temperature wherein, formed a system
SAPMAC method；
S6: heat transport fluid cools down, and the heat transport fluid absorbing the heat of compression in S1 and S3 step enters sending out of refrigeration unit (14)
In raw side (12), after release heat, the most water cooled but device (15) is cooled and returned in room temperature water pot (10) further；
S7, normal-temperature water supply, the normal-temperature water come from room temperature water pot (10) is divided into two strands, and the frequent warm water pump of one normal-temperature water (11) adds
Unstripped gas normal-temperature water cooler (16) and the entrance of cold-producing medium normal-temperature water cooler (5) is sent into after pressure；
S8, water at low temperature supply, another burst of normal-temperature water in S7 enters in the evaporation side (13) of refrigeration unit (14), discharges wherein
The water at low temperature that heat is produced is admitted in low temperature water pot (2), and the water at low temperature in low temperature water pot (2) is pressurizeed through low temperature water pump (1)
After, send into unstripped gas water at low temperature cooler (17) and the entrance of cold-producing medium water at low temperature cooler (6), be used for reducing compressor at different levels
Inlet temperature, thus reduce compression power consumption.
7. compress the liquifying method of the gas liquefaction equipment of recuperation of heat according to a kind of band described in claim 5 or 6, its feature exists
In: the operating temperature of the high-temperature water after described normal-temperature water, water at low temperature and heat transport fluid heat absorption be respectively 20 ~ 60 DEG C, 5 ~ 30
℃、100~300℃。
The liquifying method of the gas liquefaction equipment of a kind of band the most according to claim 7 compression recuperation of heat, it is characterised in that:
Described unstripped gas is one or more in oxygen, nitrogen, hydrogen, natural gas liquefaction or liquid space division, described cold-producing medium
For air, nitrogen, natural gas, formylmerphalan alkane one or more.
The liquifying method of the gas liquefaction equipment of a kind of band the most according to claim 8 compression recuperation of heat, it is characterised in that:
Described feed gas compressor (3) and the progression of refrigerant compressor (4) be 1 ~ 4 grade or section, its level or intersegmental and outlet all adopt
Cooling down by normal-temperature water and water at low temperature tandem, described refrigeration unit (14) is lithium bromide absorption refrigerating set or absorption refrigeration
With the unit mahine of compression-type refrigeration, described water cooler (15) is the one of air-cooled, water-cooling type or absorption heat pump or many
Kind.
The liquifying method of the gas liquefaction equipment of a kind of band the most according to claim 9 compression recuperation of heat, its feature exists
In: described heat transport fluid is for softening water, desalted water, steam, conduction oil, ethylene glycol or methanol aqueous solution.
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| CN110418929A (en) * | 2017-03-16 | 2019-11-05 | 诺瓦泰克公共股份公司 | Device and method for natural gas liquefaction |
| ES2736963A1 (en) * | 2018-07-03 | 2020-01-09 | Univ Coruna | Compression plant for air separation installations with conversion of residual energy into electrical power and cooling by absorption cycle (Machine-translation by Google Translate, not legally binding) |
| GB2582763A (en) * | 2019-04-01 | 2020-10-07 | Linde Ag | Method and device for the recovery of waste energy from refrigerant compression systems used in gas liquefaction processes |
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| US6220053B1 (en) * | 2000-01-10 | 2001-04-24 | Praxair Technology, Inc. | Cryogenic industrial gas liquefaction system |
| CN101228405B (en) * | 2005-08-09 | 2010-12-08 | 埃克森美孚上游研究公司 | Natural gas liquefaction process for producing LNG |
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| CN109210867A (en) * | 2018-08-28 | 2019-01-15 | 中国科学院理化技术研究所 | System for retrieve methane in follow oxygen-bearing coal bed gas |
| CN109210867B (en) * | 2018-08-28 | 2021-03-19 | 中国科学院理化技术研究所 | System for retrieve methane in follow oxygen-bearing coal bed gas |
| GB2582763A (en) * | 2019-04-01 | 2020-10-07 | Linde Ag | Method and device for the recovery of waste energy from refrigerant compression systems used in gas liquefaction processes |
| CN113606864A (en) * | 2021-08-19 | 2021-11-05 | 江苏科技大学 | BOG reliquefaction system adaptive to gas production fluctuation and working method thereof |
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Address after: 611700 north area of Chengdu modern industrial port, Pixian County, Chengdu City, Sichuan Province Patentee after: Sichuan Shudao Equipment Technology Co.,Ltd. Address before: 611700 north area of Chengdu modern industrial port, Pixian County, Chengdu City, Sichuan Province Patentee before: CHENGDU SHENLENG LIQUEFACTION PLANT Co.,Ltd. |
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