CN106288656A - A kind of air separation plant goes out tower nitrogen gas recovering apparatus - Google Patents

A kind of air separation plant goes out tower nitrogen gas recovering apparatus Download PDF

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Publication number
CN106288656A
CN106288656A CN201610883925.4A CN201610883925A CN106288656A CN 106288656 A CN106288656 A CN 106288656A CN 201610883925 A CN201610883925 A CN 201610883925A CN 106288656 A CN106288656 A CN 106288656A
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CN
China
Prior art keywords
nitrogen
passage
liquefaction
air separation
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610883925.4A
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Chinese (zh)
Inventor
陈崇文
林定标
陈辉
王培正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG HAICHANG GAS Co.,Ltd.
Original Assignee
ZHEJIANG HAITIAN GAS CO Ltd
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Application filed by ZHEJIANG HAITIAN GAS CO Ltd filed Critical ZHEJIANG HAITIAN GAS CO Ltd
Priority to CN201610883925.4A priority Critical patent/CN106288656A/en
Publication of CN106288656A publication Critical patent/CN106288656A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—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
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/0406—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of 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
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0035—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work
    • F25J1/0037—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work of a return stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0234—Integration with a cryogenic air separation unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0285—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings
    • F25J1/0288—Combination of different types of drivers mechanically coupled to the same refrigerant compressor, possibly split on multiple compressor casings using work extraction by mechanical coupling of compression and expansion of the refrigerant, so-called companders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/10—Processes or apparatus using other separation and/or other processing means using combined expansion and separation, e.g. in a vortex tube, "Ranque tube" or a "cyclonic fluid separator", i.e. combination of an isentropic nozzle and a cyclonic separator; Centrifugal separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
    • F25J2215/44—Ultra high purity nitrogen, i.e. generally less than 1 ppb impurities

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

A kind of air separation plant goes out tower nitrogen gas recovering apparatus, including for connecting the liquefaction of nitrogen passage of tower nitrogen outlet on air separation unit, it is characterized in that: liquefaction of nitrogen passage sequentially passes through nitrogen circulation machine, the pressurized end of booster expansion machine, Precooling unit, main heat exchanger, liquefier, knockout drum, gas-liquid separation pot bottom is provided with nitrogen products outlet, gas-liquid separation tank top is connected with hydrogen circulation passage, and hydrogen circulation passage is connected on the liquefaction of nitrogen passage of nitrogen circulation machine input after liquefier, main heat exchanger；Being connected with swelling pipeline between liquefaction of nitrogen passage and hydrogen circulation passage, swelling pipeline is through the expanding end of booster expansion machine.The invention provides a kind of air separation plant and go out tower nitrogen gas recovering apparatus, make space division product gas integrated utilize, nitrogen all reclaims, and improves high-purity liquid nitrogen yield.

Description

A kind of air separation plant goes out tower nitrogen gas recovering apparatus
Technical field
The invention belongs to equipment of making nitrogen technical field, refer in particular to a kind of air separation plant and go out tower nitrogen gas recovering apparatus.
Background technology
The liquid nitrogen that existing full liquid space division device is produced all extracts from lower tower, causes nitrogen yield the most on the low side, causes Top of tower low-pressure nitrogen empties, it is impossible to comprehensive utilization, the response rate only 50%, adds the comprehensive energy consumption of air separation unit.
Summary of the invention
It is an object of the invention to provide a kind of air separation plant and go out tower nitrogen gas recovering apparatus, make space division product gas integrated profit With, nitrogen all reclaims, and improves high-purity liquid nitrogen yield.
The object of the present invention is achieved like this: a kind of air separation plant goes out tower nitrogen gas recovering apparatus, including for connecting sky The liquefaction of nitrogen passage of tower nitrogen outlet on separating device, it is characterised in that: liquefaction of nitrogen passage sequentially pass through nitrogen circulation machine, The pressurized end of booster expansion machine, Precooling unit, main heat exchanger, liquefier, knockout drum, gas-liquid separation pot bottom is provided with product Liquid nitrogen outlet, gas-liquid separation tank top is connected with hydrogen circulation passage, and hydrogen circulation passage connects after liquefier, main heat exchanger It is connected on the liquefaction of nitrogen passage of nitrogen circulation machine input.
Preferably, being connected with swelling pipeline between described liquefaction of nitrogen passage and hydrogen circulation passage, swelling pipeline is through increasing The expanding end of compression swelling machine.
Preferably, the input of described swelling pipeline and the liquefaction of nitrogen channel connection in main heat exchanger, outfan connects Circulation canal between main heat exchanger and liquefier.
The present invention highlights and useful having the technical effect that compared to existing technology
Use nitrogen circulation compression, swell refrigeration liquefaction so that the nitrogen that upper tower diffuses realizes entirely reclaiming and generating high-purity Liquid nitrogen, the response rate is up to more than 95%, and liquid energy consumption processed declines more than 20%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Accompanying drawing illustrates: 1, liquefaction of nitrogen passage；2, swelling pipeline；3, hydrogen circulation passage；4, pressurized end；5, expanding end； NT1001, nitrogen circulation machine；RU, Precooling unit；ET, booster expansion machine；E1, main heat exchanger；E2, liquefier；LT, gas-liquid separation Tank.
Detailed description of the invention
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, sees Fig. 1:
A kind of air separation plant goes out tower nitrogen gas recovering apparatus, including for connecting the nitrogen of tower nitrogen outlet on air separation unit Liquefier channel 1, liquefaction of nitrogen passage 1 sequentially passes through nitrogen circulation machine NT1001, the pressurized end 4 of booster expansion machine ET, precooler Group RU, main heat exchanger E1, liquefier E2, knockout drum LT, be provided with nitrogen products outlet, gas-liquid bottom knockout drum LT Knockout drum LT top is connected with hydrogen circulation passage 3, and hydrogen circulation passage 3 is connected to nitrogen after liquefier E2, main heat exchanger E1 On the liquefaction of nitrogen passage 1 of gas circulator NT1001 input.
Wherein, being connected with swelling pipeline 2 between liquefaction of nitrogen passage 1 and hydrogen circulation passage 3, swelling pipeline 2 is through supercharging The expanding end 5 of decompressor ET；The input of swelling pipeline 2 connects with the liquefaction of nitrogen passage 1 on main heat exchanger E1, and outfan is even Logical circulation canal between main heat exchanger E1 and liquefier E2.
The operation principle of such scheme is as follows:
1, upper tower low-pressure nitrogen is drawn into liquefaction of nitrogen passage 1 through nitrogen circulation machine NT1001, and low-pressure nitrogen is in supercharging Under end 4 effect so that nitrogen pressure raises, then lower the temperature step by step liquefaction through Precooling unit RU, main heat exchanger E1, liquefier E2, Finally enter knockout drum LT；
2, the decline of the liquid nitrogen in knockout drum LT is discharged by liquid nitrogen outlet, and the nitrogen that part does not liquefies then is followed by nitrogen Ring passage 3 is returned to liquefaction of nitrogen passage 1 and is again liquefied；Hydrogen circulation passage 3 sequentially passes through liquefier E2 and main heat exchange Device E1, it is achieved cold recovery；
3, the nitrogen in swelling pipeline 2 expands through expanding end 5 so that nitrogen temperature reduces, and is mended by the nitrogen after cooling It is charged on nitrogen circulation pipeline supplement as the cold of liquefaction of nitrogen.
Above-described embodiment is only presently preferred embodiments of the present invention, limits the scope of the invention the most according to this, therefore: all depend on The equivalence change that the structure of the present invention, shape, principle are done, within all should being covered by protection scope of the present invention.

Claims (3)

1. air separation plant goes out a tower nitrogen gas recovering apparatus, including for connecting the Nitrogen Headspace of tower nitrogen outlet on air separation unit Change passage (1), it is characterised in that: liquefaction of nitrogen passage (1) sequentially passes through nitrogen circulation machine (NT1001), booster expansion machine (ET) Pressurized end (4), Precooling unit (RU), main heat exchanger (E1), liquefier (E2), knockout drum (LT), knockout drum (LT) bottom is provided with nitrogen products outlet, and knockout drum (LT) top is connected with hydrogen circulation passage (3), hydrogen circulation passage (3) after liquefier (E2), main heat exchanger (E1), it is connected to the liquefaction of nitrogen passage of nitrogen circulation machine (NT1001) input (1) on.
A kind of air separation plant the most according to claim 1 goes out tower nitrogen gas recovering apparatus, it is characterised in that: described liquefaction of nitrogen Being connected with swelling pipeline (2) between passage (1) and hydrogen circulation passage (3), swelling pipeline (2) is swollen through booster expansion machine (ET) Swollen end (5).
A kind of air separation plant the most according to claim 2 goes out tower nitrogen gas recovering apparatus, it is characterised in that: described swelling pipeline (2) input connects with the liquefaction of nitrogen passage (1) in main heat exchanger (E1), outfan connection main heat exchanger (E1) and liquefaction Circulation canal between device (E2).
CN201610883925.4A 2016-10-10 2016-10-10 A kind of air separation plant goes out tower nitrogen gas recovering apparatus Pending CN106288656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610883925.4A CN106288656A (en) 2016-10-10 2016-10-10 A kind of air separation plant goes out tower nitrogen gas recovering apparatus

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Application Number Priority Date Filing Date Title
CN201610883925.4A CN106288656A (en) 2016-10-10 2016-10-10 A kind of air separation plant goes out tower nitrogen gas recovering apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489194A (en) * 2018-05-28 2018-09-04 张家港富瑞氢能装备有限公司 Liquid nitrogen precooler device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201132A (en) * 1997-05-01 1998-12-09 普拉塞尔技术有限公司 System for producing low-temp. liquid
WO2010128466A2 (en) * 2009-05-08 2010-11-11 Corac Group Plc Production and distribution of natural gas
CN204240701U (en) * 2014-11-04 2015-04-01 四川空分设备(集团)有限责任公司 The oxygen liquefying plant that a kind of middle hydraulic fluid nitrogen backflows
CN206113508U (en) * 2016-10-10 2017-04-19 浙江海天气体有限公司 Air separation device goes out tower nitrogen gas recovery unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201132A (en) * 1997-05-01 1998-12-09 普拉塞尔技术有限公司 System for producing low-temp. liquid
WO2010128466A2 (en) * 2009-05-08 2010-11-11 Corac Group Plc Production and distribution of natural gas
CN204240701U (en) * 2014-11-04 2015-04-01 四川空分设备(集团)有限责任公司 The oxygen liquefying plant that a kind of middle hydraulic fluid nitrogen backflows
CN206113508U (en) * 2016-10-10 2017-04-19 浙江海天气体有限公司 Air separation device goes out tower nitrogen gas recovery unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489194A (en) * 2018-05-28 2018-09-04 张家港富瑞氢能装备有限公司 Liquid nitrogen precooler device

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Effective date of registration: 20220105

Address after: 317000 southeast of line A3, Linhai Park, chemical API base, Taizhou City, Zhejiang Province

Applicant after: ZHEJIANG HAICHANG GAS Co.,Ltd.

Address before: No. 391, Dongfang Avenue, Linhai, Taizhou, Zhejiang

Applicant before: ZHEJIANG HAITIAN GAS Co.,Ltd.

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Application publication date: 20170104