EP0716280A3 - Methods and apparatus for the low temperature air separation - Google Patents

Methods and apparatus for the low temperature air separation Download PDF

Info

Publication number: EP0716280A3
Authority: EP; European Patent Office
Prior art keywords: methods; low temperature; temperature air; air separation; separation
Prior art date: 1994-12-05
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.): Granted

Application number

EP95118951A

Other languages

German (de)

French (fr)

Other versions

EP0716280A2 (en

EP0716280B1 (en

Inventor

Gerhard Dipl-Ing Pompl

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.)

Linde GmbH

Original Assignee

Linde GmbH

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.)

1994-12-05

Filing date

1995-12-01

Publication date

1997-04-16

1995-12-01 Application filed by Linde GmbH filed Critical Linde GmbH

1996-06-12 Publication of EP0716280A2 publication Critical patent/EP0716280A2/en

1997-04-16 Publication of EP0716280A3 publication Critical patent/EP0716280A3/en

2001-05-16 Application granted granted Critical

2001-05-16 Publication of EP0716280B1 publication Critical patent/EP0716280B1/en

2015-12-01 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04103—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression using solely hydrostatic liquid head
- 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
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/04084—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression 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
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression 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
- F25J3/04248—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
- F25J3/04296—Claude expansion, i.e. expanded into the main or high 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
- F25J3/04406—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
- F25J3/04412—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 in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high 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
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04654—Producing crude argon in a crude argon column
- F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
- F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
- 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S62/00—Refrigeration
- Y10S62/923—Inert gas
- Y10S62/924—Argon

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)

EP95118951A 1994-12-05 1995-12-01 Method and apparatus for the low temperature air separation Expired - Lifetime EP0716280B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4443190		1994-12-05
DE4443190A DE4443190A1 (en)	1994-12-05	1994-12-05	Method and apparatus for the cryogenic separation of air

Publications (3)

Publication Number	Publication Date
EP0716280A2 EP0716280A2 (en)	1996-06-12
EP0716280A3 true EP0716280A3 (en)	1997-04-16
EP0716280B1 EP0716280B1 (en)	2001-05-16

Family

ID=6534925

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95118951A Expired - Lifetime EP0716280B1 (en)	1994-12-05	1995-12-01	Method and apparatus for the low temperature air separation

Country Status (7)

Country	Link
US (1)	US5644934A (en)
EP (1)	EP0716280B1 (en)
JP (1)	JPH08233458A (en)
KR (1)	KR960024196A (en)
CN (1)	CN1125838A (en)
DE (2)	DE4443190A1 (en)
TW (1)	TW299244B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19636306A1 (en)	1996-09-06	1998-02-05	Linde Ag	Method and device for the production of argon by low-temperature separation of air
US6196024B1 (en) *	1999-05-25	2001-03-06	L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude	Cryogenic distillation system for air separation
US6347534B1 (en) *	1999-05-25	2002-02-19	Air Liquide Process And Construction	Cryogenic distillation system for air separation
US6276170B1 (en)	1999-05-25	2001-08-21	Air Liquide Process And Construction	Cryogenic distillation system for air separation
US6202441B1 (en)	1999-05-25	2001-03-20	Air Liquide Process And Construction, Inc.	Cryogenic distillation system for air separation
DE102007031759A1 (en)	2007-07-07	2009-01-08	Linde Ag	Method and apparatus for producing gaseous pressure product by cryogenic separation of air
DE102007031765A1 (en)	2007-07-07	2009-01-08	Linde Ag	Process for the cryogenic separation of air
DE102009034979A1 (en)	2009-04-28	2010-11-04	Linde Aktiengesellschaft	Method for producing pressurized oxygen by evaporating liquid oxygen using a copper and nickel heat exchanger block
EP2312248A1 (en)	2009-10-07	2011-04-20	Linde Aktiengesellschaft	Method and device for obtaining pressurised oxygen and krypton/xenon
DE102010052544A1 (en)	2010-11-25	2012-05-31	Linde Ag	Process for obtaining a gaseous product by cryogenic separation of air
DE102010052545A1 (en)	2010-11-25	2012-05-31	Linde Aktiengesellschaft	Method and apparatus for recovering a gaseous product by cryogenic separation of air
EP2520886A1 (en)	2011-05-05	2012-11-07	Linde AG	Method and device for creating gaseous oxygen pressurised product by the cryogenic decomposition of air
DE102011112909A1 (en)	2011-09-08	2013-03-14	Linde Aktiengesellschaft	Process and apparatus for recovering steel
CN104185767B (en) *	2011-09-20	2016-08-24	林德股份公司	For the method and apparatus producing two strands of partial air flow purified
EP2600090B1 (en)	2011-12-01	2014-07-16	Linde Aktiengesellschaft	Method and device for generating pressurised oxygen by cryogenic decomposition of air
DE102011121314A1 (en)	2011-12-16	2013-06-20	Linde Aktiengesellschaft	Method for producing gaseous oxygen product in main heat exchanger system in distillation column system, involves providing turbines, where one of turbines drives compressor, and other turbine drives generator
DE102012017488A1 (en)	2012-09-04	2014-03-06	Linde Aktiengesellschaft	Method for building air separation plant, involves selecting air separation modules on basis of product specification of module set with different air pressure requirements
WO2014154339A2 (en)	2013-03-26	2014-10-02	Linde Aktiengesellschaft	Method for air separation and air separation plant
EP2784420A1 (en)	2013-03-26	2014-10-01	Linde Aktiengesellschaft	Method for air separation and air separation plant
EP2801777A1 (en)	2013-05-08	2014-11-12	Linde Aktiengesellschaft	Air separation plant with main compressor drive
DE102013017590A1 (en)	2013-10-22	2014-01-02	Linde Aktiengesellschaft	Method for recovering methane-poor fluids in liquid air separation system to manufacture air product, involves vaporizing oxygen, krypton and xenon containing sump liquid in low pressure column by using multi-storey bath vaporizer
EP2963369B1 (en)	2014-07-05	2018-05-02	Linde Aktiengesellschaft	Method and device for the cryogenic decomposition of air
EP2963370B1 (en)	2014-07-05	2018-06-13	Linde Aktiengesellschaft	Method and device for the cryogenic decomposition of air
EP2963367A1 (en)	2014-07-05	2016-01-06	Linde Aktiengesellschaft	Method and device for cryogenic air separation with variable power consumption
EP2963371B1 (en)	2014-07-05	2018-05-02	Linde Aktiengesellschaft	Method and device for creating a pressurised gas product by the cryogenic decomposition of air
CN105758114A (en) *	2014-12-19	2016-07-13	常熟市永安工业气体制造有限公司	Argon preparation device
JP6440232B1 (en) *	2018-03-20	2018-12-19	レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード	Product nitrogen gas and product argon production method and production apparatus thereof

Citations (5)

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Publication number	Priority date	Publication date	Assignee	Title
US4715873A (en) *	1986-04-24	1987-12-29	Air Products And Chemicals, Inc.	Liquefied gases using an air recycle liquefier
US5049174A (en) *	1990-06-18	1991-09-17	Air Products And Chemicals, Inc.	Hybrid membrane - cryogenic generation of argon concurrently with nitrogen
US5245831A (en) *	1992-02-13	1993-09-21	Air Products And Chemicals, Inc.	Single heat pump cycle for increased argon recovery
US5469710A (en) *	1994-10-26	1995-11-28	Praxair Technology, Inc.	Cryogenic rectification system with enhanced argon recovery
EP0684438A1 (en) *	1994-05-27	1995-11-29	The BOC Group plc	Air separation

Family Cites Families (12)

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EP0093448B1 (en) *	1982-05-03	1986-10-15	Linde Aktiengesellschaft	Process and apparatus for obtaining gaseous oxygen at elevated pressure
DE3428968A1 (en) *	1984-08-06	1986-02-13	Linde Ag, 6200 Wiesbaden	METHOD AND DEVICE FOR DISASSEMBLING ROHARGON
US4871382A (en) *	1987-12-14	1989-10-03	Air Products And Chemicals, Inc.	Air separation process using packed columns for oxygen and argon recovery
DE3840506A1 (en) *	1988-12-01	1990-06-07	Linde Ag	METHOD AND DEVICE FOR AIR DISASSEMBLY
US5049173A (en) *	1990-03-06	1991-09-17	Air Products And Chemicals, Inc.	Production of ultra-high purity oxygen from cryogenic air separation plants
US5108476A (en) *	1990-06-27	1992-04-28	Union Carbide Industrial Gases Technology Corporation	Cryogenic air separation system with dual temperature feed turboexpansion
US5159816A (en) *	1991-05-14	1992-11-03	Air Products And Chemicals, Inc.	Method of purifying argon through cryogenic adsorption
US5315833A (en) *	1991-10-15	1994-05-31	Liquid Air Engineering Corporation	Process for the mixed production of high and low purity oxygen
US5365741A (en) *	1993-05-13	1994-11-22	Praxair Technology, Inc.	Cryogenic rectification system with liquid oxygen boiler
DE4317916A1 (en) *	1993-05-28	1994-12-01	Linde Ag	Process and apparatus for the isolation of argon
US5440884A (en) *	1994-07-14	1995-08-15	Praxair Technology, Inc.	Cryogenic air separation system with liquid air stripping
US5522224A (en) *	1994-08-15	1996-06-04	Praxair Technology, Inc.	Model predictive control method for an air-separation system

1994
- 1994-12-05 DE DE4443190A patent/DE4443190A1/en not_active Withdrawn
1995
- 1995-11-29 JP JP7332550A patent/JPH08233458A/en active Pending
- 1995-12-01 TW TW084112821A patent/TW299244B/zh active
- 1995-12-01 EP EP95118951A patent/EP0716280B1/en not_active Expired - Lifetime
- 1995-12-01 DE DE59509262T patent/DE59509262D1/en not_active Expired - Fee Related
- 1995-12-04 US US08/566,701 patent/US5644934A/en not_active Expired - Fee Related
- 1995-12-05 CN CN95117579A patent/CN1125838A/en active Pending
- 1995-12-05 KR KR1019950046689A patent/KR960024196A/en not_active Application Discontinuation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4715873A (en) *	1986-04-24	1987-12-29	Air Products And Chemicals, Inc.	Liquefied gases using an air recycle liquefier
US5049174A (en) *	1990-06-18	1991-09-17	Air Products And Chemicals, Inc.	Hybrid membrane - cryogenic generation of argon concurrently with nitrogen
US5245831A (en) *	1992-02-13	1993-09-21	Air Products And Chemicals, Inc.	Single heat pump cycle for increased argon recovery
EP0684438A1 (en) *	1994-05-27	1995-11-29	The BOC Group plc	Air separation
US5469710A (en) *	1994-10-26	1995-11-28	Praxair Technology, Inc.	Cryogenic rectification system with enhanced argon recovery

Also Published As

Publication number	Publication date
JPH08233458A (en)	1996-09-13
DE4443190A1 (en)	1996-06-13
EP0716280A2 (en)	1996-06-12
US5644934A (en)	1997-07-08
KR960024196A (en)	1996-07-20
EP0716280B1 (en)	2001-05-16
TW299244B (en)	1997-03-01
CN1125838A (en)	1996-07-03
DE59509262D1 (en)	2001-06-21

Publication	Publication Date	Title
EP0716280A3 (en)	1997-04-16	Methods and apparatus for the low temperature air separation
ZA956082B (en)	1996-02-27	Air separation method and apparatus
EP0758733A3 (en)	1997-07-30	Air separation process and apparatus by low temperature rectification
GB9425484D0 (en)	1995-02-15	Air separation
GB9405072D0 (en)	1994-04-27	Air separation
ZA954357B (en)	1996-02-05	Air separation
ZA955845B (en)	1996-02-21	Air separation
GB9410696D0 (en)	1994-07-13	Air separation
PL307668A1 (en)	1995-09-18	Apparatus for separating freezing air
GB9412182D0 (en)	1994-08-10	Air separation
ZA955844B (en)	1996-02-21	Air separation
SG50888A1 (en)	1998-07-20	Air conditioning apparatus
GR3025534T3 (en)	1998-02-27	Process and apparatus for the low temperature separation of air.
IL113996A0 (en)	1995-10-31	Air cooling apparatus
ZA959626B (en)	1996-06-20	Air separation method and apparatus
GB9504496D0 (en)	1995-04-26	Air filtering apparatus
GB9607792D0 (en)	1996-06-19	Air separation apparatus
ZA959838B (en)	1996-05-29	Air separation
SG33480A1 (en)	1996-10-18	Air separation method and apparatus
AU2557495A (en)	1996-01-04	Air cooling apparatus
GB9414359D0 (en)	1994-09-07	Apparatus for cooling and humidifying air
KR100253751B1 (en)	2000-04-15	Method and apparatus for air separation
IL115986A0 (en)	1996-01-31	Air separation process
AUPM609394A0 (en)	1994-06-30	Air cooling apparatus
KR970006861Y1 (en)	1997-07-09	Device for removing the air

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2000-10-11	RTI1	Title (correction)	Free format text: METHOD AND APPARATUS FOR THE LOW TEMPERATURE AIR SEPARATION
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