JPH03170785A - 極低温の空気分離方法およびその装置 - Google Patents

極低温の空気分離方法およびその装置

Info

Publication number: JPH03170785A
Authority: JP; Japan
Prior art keywords: column; fraction; nitrogen; oxygen; air
Prior art date: 1989-09-12
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

JP2241040A

Other languages

English (en)

Japanese (ja)

Inventor

Bao V Ha

バオ・ブイ・ハ

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.)

Liquid Air Engineering Corp Canada

Original Assignee

Liquid Air Engineering Corp Canada

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1989-09-12

Filing date

1990-09-11

Publication date

1991-07-24

1990-09-11 Application filed by Liquid Air Engineering Corp Canada filed Critical Liquid Air Engineering Corp Canada

1991-07-24 Publication of JPH03170785A publication Critical patent/JPH03170785A/ja

Status Pending legal-status Critical Current

Links

238000000926 separation method Methods 0.000 title claims description 27
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 220
229910052757 nitrogen Inorganic materials 0.000 claims abstract description 109
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 80
229910052760 oxygen Inorganic materials 0.000 claims abstract description 80
239000001301 oxygen Substances 0.000 claims abstract description 80
239000007788 liquid Substances 0.000 claims abstract description 34
238000001816 cooling Methods 0.000 claims abstract description 16
238000004821 distillation Methods 0.000 claims description 62
238000000034 method Methods 0.000 claims description 53
239000002699 waste material Substances 0.000 claims description 17
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
238000010992 reflux Methods 0.000 claims description 8
230000006835 compression Effects 0.000 claims description 7
238000007906 compression Methods 0.000 claims description 7
230000008016 vaporization Effects 0.000 claims description 7
229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
239000001569 carbon dioxide Substances 0.000 claims description 3
239000012535 impurity Substances 0.000 claims description 3
230000000630 rising effect Effects 0.000 claims description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
238000010792 warming Methods 0.000 claims description 2
238000007599 discharging Methods 0.000 claims 2
230000001174 ascending effect Effects 0.000 claims 1
230000008878 coupling Effects 0.000 claims 1
238000010168 coupling process Methods 0.000 claims 1
238000005859 coupling reaction Methods 0.000 claims 1
VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims 1
238000010438 heat treatment Methods 0.000 abstract description 6
238000009833 condensation Methods 0.000 abstract description 5
230000005494 condensation Effects 0.000 abstract description 5
238000005265 energy consumption Methods 0.000 abstract description 2
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
239000007789 gas Substances 0.000 description 12
239000000203 mixture Substances 0.000 description 7
229910052786 argon Inorganic materials 0.000 description 6
239000007791 liquid phase Substances 0.000 description 6
238000010586 diagram Methods 0.000 description 5
238000004519 manufacturing process Methods 0.000 description 5
239000012071 phase Substances 0.000 description 5
239000012141 concentrate Substances 0.000 description 4
239000002826 coolant Substances 0.000 description 4
238000011084 recovery Methods 0.000 description 4
239000012530 fluid Substances 0.000 description 3
238000009835 boiling Methods 0.000 description 2
238000007796 conventional method Methods 0.000 description 2
229910001873 dinitrogen Inorganic materials 0.000 description 2
238000005194 fractionation Methods 0.000 description 2
VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
230000002745 absorbent Effects 0.000 description 1
239000002250 absorbent Substances 0.000 description 1
238000007792 addition Methods 0.000 description 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
239000000356 contaminant Substances 0.000 description 1
238000001944 continuous distillation Methods 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
238000001914 filtration Methods 0.000 description 1
238000004508 fractional distillation Methods 0.000 description 1
239000000463 material Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
239000002609 medium Substances 0.000 description 1
238000002156 mixing Methods 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
239000002808 molecular sieve Substances 0.000 description 1
229910052756 noble gas Inorganic materials 0.000 description 1
150000002835 noble gases Chemical class 0.000 description 1
238000012856 packing Methods 0.000 description 1
239000013618 particulate matter Substances 0.000 description 1
239000000741 silica gel Substances 0.000 description 1
229910002027 silica gel Inorganic materials 0.000 description 1
URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
239000006163 transport media Substances 0.000 description 1

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
- 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04309—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of 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
- 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
- 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
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/04321—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of 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
- 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
- F25J3/04406—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 using a dual pressure main column system
- F25J3/04424—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 using a dual pressure main column system without thermally coupled high and low pressure columns, i.e. a so-called split columns
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/20—Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere
- 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
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/50—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column
- F25J2200/54—Processes or apparatus using separation by rectification using multiple (re-)boiler-condensers at different heights of the column in the low pressure column of a double pressure main column system
- 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
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity 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
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/40—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval
- F25J2240/42—Expansion without extracting work, i.e. isenthalpic throttling, e.g. JT valve, regulating valve or venturi, or isentropic nozzle, e.g. Laval the fluid being air

Landscapes

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)
Separation By Low-Temperature Treatments (AREA)

JP2241040A 1989-09-12 1990-09-11 極低温の空気分離方法およびその装置 Pending JPH03170785A (ja)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
PCT/US1989/003926 WO1993013373A1 (en)	1989-09-12	1989-09-12	Cryogenic air separation process and apparatus
US89/03926		1989-09-12

Publications (1)

Publication Number	Publication Date
JPH03170785A true JPH03170785A (ja)	1991-07-24

Family

ID=22215224

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP2241040A Pending JPH03170785A (ja)	1989-09-12	1990-09-11	極低温の空気分離方法およびその装置

Country Status (10)

Country	Link
EP (1)	EP0418139B1 (es)
JP (1)	JPH03170785A (es)
CN (1)	CN1050260A (es)
AU (1)	AU643232B2 (es)
CA (1)	CA2025013A1 (es)
DE (1)	DE69004647T2 (es)
ES (1)	ES2046740T3 (es)
RU (1)	RU2069293C1 (es)
WO (1)	WO1993013373A1 (es)
ZA (1)	ZA907188B (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5396269A (en) *	1991-02-20	1995-03-07	Hitachi, Ltd.	Television telephone
US5257504A (en) *	1992-02-18	1993-11-02	Air Products And Chemicals, Inc.	Multiple reboiler, double column, elevated pressure air separation cycles and their integration with gas turbines
US5251450A (en) *	1992-08-28	1993-10-12	Air Products And Chemicals, Inc.	Efficient single column air separation cycle and its integration with gas turbines
US5251451A (en) *	1992-08-28	1993-10-12	Air Products And Chemicals, Inc.	Multiple reboiler, double column, air boosted, elevated pressure air separation cycle and its integration with gas turbines
DE19819263C2 (de) *	1998-04-30	2003-08-21	Linde Ag	Verfahren und Vorrichtung zur Gewinnung von Druckstickstoff
US6978638B2 (en) *	2003-05-22	2005-12-27	Air Products And Chemicals, Inc.	Nitrogen rejection from condensed natural gas
RU2242267C1 (ru) *	2003-11-17	2004-12-20	Савинов Михаил Юрьевич	Способ очистки и разделения многокомпонентной смеси и устройство для его осуществления
FR2875588B1 (fr) *	2004-09-21	2007-04-27	Air Liquide	Procede de separation d'air par distillation cryogenique
EP2312247A1 (de) *	2009-10-09	2011-04-20	Linde AG	Verfahren und Vorrichtung zur Gewinnung von flüssigem Stickstoff durch Tieftemperatur-Luftzerlegung
EP3159648B1 (de) *	2015-10-20	2018-09-19	Linde Aktiengesellschaft	Plattenwärmetauscher-kondensatorverdampfer und verfahren zur tieftemperaturzerlegung von luft
US12158303B2 (en) *	2018-10-09	2024-12-03	Linde Gmbh	Method for obtaining one or more air products and air separation system
CN109297260A (zh) *	2018-10-17	2019-02-01	浙江海天气体有限公司	一种全制氮空分废气回收装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU523019B2 (en) *	1978-05-25	1982-07-08	Commonwealth Industrial Gases Limited, The	Separation of air
JPS58198677A (ja) *	1982-05-14	1983-11-18	株式会社日立製作所	空気分離方法及び装置
US4582518A (en) *	1984-09-26	1986-04-15	Erickson Donald C	Nitrogen production by low energy distillation
US4707994A (en) *	1986-03-10	1987-11-24	Air Products And Chemicals, Inc.	Gas separation process with single distillation column
GB8800842D0 (en) *	1988-01-14	1988-02-17	Boc Group Plc	Air separation

1989
- 1989-09-12 WO PCT/US1989/003926 patent/WO1993013373A1/en not_active Ceased
1990
- 1990-09-10 CA CA002025013A patent/CA2025013A1/en not_active Abandoned
- 1990-09-10 ZA ZA907188A patent/ZA907188B/xx unknown
- 1990-09-11 ES ES199090402488T patent/ES2046740T3/es not_active Expired - Lifetime
- 1990-09-11 AU AU62375/90A patent/AU643232B2/en not_active Ceased
- 1990-09-11 EP EP90402488A patent/EP0418139B1/en not_active Expired - Lifetime
- 1990-09-11 CN CN90107623A patent/CN1050260A/zh active Pending
- 1990-09-11 DE DE90402488T patent/DE69004647T2/de not_active Expired - Fee Related
- 1990-09-11 JP JP2241040A patent/JPH03170785A/ja active Pending
- 1990-09-11 RU SU904830924A patent/RU2069293C1/ru active

Also Published As

Publication number	Publication date
RU2069293C1 (ru)	1996-11-20
AU6237590A (en)	1991-03-21
CN1050260A (zh)	1991-03-27
DE69004647T2 (de)	1994-03-10
ZA907188B (en)	1991-09-25
EP0418139B1 (en)	1993-11-18
ES2046740T3 (es)	1994-02-01
DE69004647D1 (de)	1993-12-23
WO1993013373A1 (en)	1993-07-08
AU643232B2 (en)	1993-11-11
EP0418139A1 (en)	1991-03-20
CA2025013A1 (en)	1991-03-13

Publication	Publication Date	Title
KR100291684B1 (ko)	2001-09-17	공기의분리방법
US4560397A (en)	1985-12-24	Process to produce ultrahigh purity oxygen
US5245832A (en)	1993-09-21	Triple column cryogenic rectification system
KR100225681B1 (ko)	1999-10-15	저순도 산소 제조용 저온 정류 시스템
JPH08210769A (ja)	1996-08-20	低純度酸素生成のための側コラム付き極低温精留システム
CN100380079C (zh)	2008-04-09	带有混合塔和氪-氙回收装置的空气分馏工艺及设备
US5551258A (en)	1996-09-03	Air separation
US5303556A (en)	1994-04-19	Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
JPH0694361A (ja)	1994-04-05	空気の分離
KR100407184B1 (ko)	2003-11-28	초고순도 질소 및 초고순도 산소를 제조하기 위한 극저온 정류 시스템
JPH03170785A (ja)	1991-07-24	極低温の空気分離方法およびその装置
JP2002005569A (ja)	2002-01-09	分割釜型循環を有する低温空気分離方法と装置
US5385024A (en)	1995-01-31	Cryogenic rectification system with improved recovery
JPS6367637B2 (es)	1988-12-27
US5144808A (en)	1992-09-08	Cryogenic air separation process and apparatus
EP0660058B1 (en)	2001-04-11	Air separation
CA2094530C (en)	1996-06-18	Cryogenic rectification system with dual heat pump
EP0615105B1 (en)	1997-07-23	Air separation
JPH0650658A (ja)	1994-02-25	空気分離方法
KR100288569B1 (ko)	2001-05-02	저순도 산소를 제조하기 위한 단일 칼럼 극저온 정류 시스템
KR19990082696A (ko)	1999-11-25	액체공기가연속공급되는극저온정류시스템
US6170291B1 (en)	2001-01-09	Separation of air
EP0202843B1 (en)	1990-07-18	Air separation method and apparatus
KR19990023921A (ko)	1999-03-25	질소를 생성시키기 위한 이중 칼럼 극저온 정류 시스템