BR9501196A - Processo e aparelho de retificação criogênica para a produção de nitrogênio gasoso de elevada pressão - Google Patents
Processo e aparelho de retificação criogênica para a produção de nitrogênio gasoso de elevada pressãoInfo
- Publication number
- BR9501196A BR9501196A BR9501196A BR9501196A BR9501196A BR 9501196 A BR9501196 A BR 9501196A BR 9501196 A BR9501196 A BR 9501196A BR 9501196 A BR9501196 A BR 9501196A BR 9501196 A BR9501196 A BR 9501196A
- Authority
- BR
- Brazil
- Prior art keywords
- production
- nitrogen gas
- pressure nitrogen
- rectification process
- cryogenic rectification
- Prior art date
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title 1
- 229910001873 dinitrogen Inorganic materials 0.000 title 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
- F25J3/0429—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
-
- 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
-
- 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
- F25J3/04436—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 at least a triple pressure main column system
- F25J3/04454—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 at least a triple pressure main column system a main column system not otherwise provided, e.g. serially coupling of columns or more than three pressure levels
-
- 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
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
-
- 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
- F25J2200/34—Processes or apparatus using separation by rectification using a side column fed by a stream from the 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
- 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
-
- 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
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/42—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being 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
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/52—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen enriched compared to air ("crude 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/02—Recycle of a stream in general, e.g. a by-pass 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
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/42—Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/217,812 US5402647A (en) | 1994-03-25 | 1994-03-25 | Cryogenic rectification system for producing elevated pressure nitrogen |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9501196A true BR9501196A (pt) | 1995-11-28 |
Family
ID=22812635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9501196A BR9501196A (pt) | 1994-03-25 | 1995-03-24 | Processo e aparelho de retificação criogênica para a produção de nitrogênio gasoso de elevada pressão |
Country Status (9)
Country | Link |
---|---|
US (1) | US5402647A (pt) |
EP (1) | EP0674144B1 (pt) |
JP (1) | JP2989516B2 (pt) |
KR (1) | KR100208459B1 (pt) |
CN (1) | CN1075193C (pt) |
BR (1) | BR9501196A (pt) |
CA (1) | CA2145445C (pt) |
DE (1) | DE69502328T2 (pt) |
ES (1) | ES2116005T3 (pt) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5655388A (en) * | 1995-07-27 | 1997-08-12 | Praxair Technology, Inc. | Cryogenic rectification system for producing high pressure gaseous oxygen and liquid product |
US5600970A (en) * | 1995-12-19 | 1997-02-11 | Praxair Technology, Inc. | Cryogenic rectification system with nitrogen turboexpander heat pump |
US5596886A (en) * | 1996-04-05 | 1997-01-28 | Praxair Technology, Inc. | Cryogenic rectification system for producing gaseous oxygen and high purity nitrogen |
US5697229A (en) * | 1996-08-07 | 1997-12-16 | Air Products And Chemicals, Inc. | Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone |
US5682762A (en) * | 1996-10-01 | 1997-11-04 | Air Products And Chemicals, Inc. | Process to produce high pressure nitrogen using a high pressure column and one or more lower pressure columns |
DE19735154A1 (de) * | 1996-10-30 | 1998-05-07 | Linde Ag | Verfahren und Vorrichtung zur Gewinnung von Druckstickstoff |
US5836175A (en) * | 1997-08-29 | 1998-11-17 | Praxair Technology, Inc. | Dual column cryogenic rectification system for producing nitrogen |
US5806342A (en) * | 1997-10-15 | 1998-09-15 | Praxair Technology, Inc. | Cryogenic rectification system for producing low purity oxygen and high purity oxygen |
GB9724787D0 (en) * | 1997-11-24 | 1998-01-21 | Boc Group Plc | Production of nitrogen |
GB9726954D0 (en) * | 1997-12-19 | 1998-02-18 | Wickham Michael | Air separation |
US5906113A (en) * | 1998-04-08 | 1999-05-25 | Praxair Technology, Inc. | Serial column cryogenic rectification system for producing high purity nitrogen |
US5934104A (en) * | 1998-06-02 | 1999-08-10 | Air Products And Chemicals, Inc. | Multiple column nitrogen generators with oxygen coproduction |
DE19933558C5 (de) * | 1999-07-16 | 2010-04-15 | Linde Ag | Dreisäulenverfahren und -vorrichtung zur Tieftemperaturzerlegung von Luft |
US6230519B1 (en) | 1999-11-03 | 2001-05-15 | Praxair Technology, Inc. | Cryogenic air separation process for producing gaseous nitrogen and gaseous oxygen |
US6260380B1 (en) | 2000-03-23 | 2001-07-17 | Praxair Technology, Inc. | Cryogenic air separation process for producing liquid oxygen |
DE10045128A1 (de) * | 2000-09-13 | 2002-03-21 | Linde Ag | Verfahren und Vorrichtung zur Erzeugung hoch reinen Stickstoffs durch Tieftemperatur-Luftzerlegung |
US6397631B1 (en) * | 2001-06-12 | 2002-06-04 | Air Products And Chemicals, Inc. | Air separation process |
US6499312B1 (en) | 2001-12-04 | 2002-12-31 | Praxair Technology, Inc. | Cryogenic rectification system for producing high purity nitrogen |
US6494060B1 (en) * | 2001-12-04 | 2002-12-17 | Praxair Technology, Inc. | Cryogenic rectification system for producing high purity nitrogen using high pressure turboexpansion |
GB2407372B (en) * | 2002-04-11 | 2007-02-14 | Richard A Haase | Water combustion technology-methods,processes,systems and apparatus for the combustion of hydrogen and oxygen |
US7284395B2 (en) * | 2004-09-02 | 2007-10-23 | Praxair Technology, Inc. | Cryogenic air separation plant with reduced liquid drain loss |
US8268269B2 (en) * | 2006-01-24 | 2012-09-18 | Clearvalue Technologies, Inc. | Manufacture of water chemistries |
US20100115992A1 (en) * | 2006-12-18 | 2010-05-13 | Shirley Arthur I | Methods for recovering argon |
JP5417054B2 (ja) * | 2009-06-15 | 2014-02-12 | 大陽日酸株式会社 | 空気分離方法及び装置 |
JP5307055B2 (ja) * | 2010-03-04 | 2013-10-02 | 大陽日酸株式会社 | 窒素及び酸素の製造方法並びに窒素及び酸素の製造装置。 |
US20130000351A1 (en) * | 2011-06-28 | 2013-01-03 | Air Liquide Process & Construction, Inc. | Production Of High-Pressure Gaseous Nitrogen |
US9097459B2 (en) * | 2011-08-17 | 2015-08-04 | Air Liquide Process & Construction, Inc. | Production of high-pressure gaseous nitrogen |
EP2634517B1 (en) * | 2012-02-29 | 2018-04-04 | L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Process and apparatus for the separation of air by cryogenic distillation |
CN102809261B (zh) * | 2012-04-19 | 2014-07-23 | 四川空分设备(集团)有限责任公司 | 从空气中制取低纯度氧气的深冷法分离方法及其装置 |
US10443603B2 (en) * | 2012-10-03 | 2019-10-15 | Praxair Technology, Inc. | Method for compressing an incoming feed air stream in a cryogenic air separation plant |
CN103845914B (zh) * | 2013-10-12 | 2015-05-20 | 洛阳瑞泽石化工程有限公司 | 双重沸器的布置方法及双重沸器设备 |
JP6194280B2 (ja) * | 2014-05-23 | 2017-09-06 | 株式会社神戸製鋼所 | 蒸留装置 |
CN104048478B (zh) * | 2014-06-23 | 2016-03-30 | 浙江大川空分设备有限公司 | 高提取率和低能耗污氮气提纯氮气的设备及其提取方法 |
CN105445046B (zh) * | 2014-08-06 | 2018-06-26 | 天津航天瑞莱科技有限公司 | 一种用于管路结构环境模拟的制冷及增压系统 |
CN113310282A (zh) * | 2021-05-26 | 2021-08-27 | 中国空分工程有限公司 | 一种带泵双塔精馏及低温正流膨胀制氮系统及制氮方法 |
CN113566495B (zh) * | 2021-07-28 | 2022-04-26 | 杭州特盈能源技术发展有限公司 | 一种玻璃窑炉用低能耗氮氧制取工艺 |
CN114777415B (zh) * | 2022-04-22 | 2023-08-15 | 杭州特盈能源技术发展有限公司 | 一种低能耗双塔双过冷正流膨胀制氮工艺 |
CN115096043A (zh) * | 2022-07-12 | 2022-09-23 | 杭氧集团股份有限公司 | 一种利用三塔耦合制取高纯氮和超纯液氧的装置及方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1576910A (en) * | 1978-05-12 | 1980-10-15 | Air Prod & Chem | Process and apparatus for producing gaseous nitrogen |
DE2903089A1 (de) * | 1979-01-26 | 1980-07-31 | Linde Ag | Verfahren zur gewinnung von sauerstoff aus luft |
US4448595A (en) * | 1982-12-02 | 1984-05-15 | Union Carbide Corporation | Split column multiple condenser-reboiler air separation process |
US4453957A (en) * | 1982-12-02 | 1984-06-12 | Union Carbide Corporation | Double column multiple condenser-reboiler high pressure nitrogen process |
US4605427A (en) * | 1983-03-31 | 1986-08-12 | Erickson Donald C | Cryogenic triple-pressure air separation with LP-to-MP latent-heat-exchange |
FR2578532B1 (fr) * | 1985-03-11 | 1990-05-04 | Air Liquide | Procede et installation de production d'azote |
US4854954A (en) * | 1988-05-17 | 1989-08-08 | Erickson Donald C | Rectifier liquid generated intermediate reflux for subambient cascades |
US4927441A (en) * | 1989-10-27 | 1990-05-22 | Air Products And Chemicals, Inc. | High pressure nitrogen production cryogenic process |
US5006139A (en) * | 1990-03-09 | 1991-04-09 | Air Products And Chemicals, Inc. | Cryogenic air separation process for the production of nitrogen |
US5069699A (en) * | 1990-09-20 | 1991-12-03 | Air Products And Chemicals, Inc. | Triple distillation column nitrogen generator with plural reboiler/condensers |
US5098457A (en) * | 1991-01-22 | 1992-03-24 | Union Carbide Industrial Gases Technology Corporation | Method and apparatus for producing elevated pressure nitrogen |
US5231837A (en) * | 1991-10-15 | 1993-08-03 | Liquid Air Engineering Corporation | Cryogenic distillation process for the production of oxygen and nitrogen |
US5222365A (en) * | 1992-02-24 | 1993-06-29 | Praxair Technology, Inc. | Cryogenic rectification system for producing high pressure nitrogen product |
US5245832A (en) * | 1992-04-20 | 1993-09-21 | Praxair Technology, Inc. | Triple column cryogenic rectification system |
US5233838A (en) * | 1992-06-01 | 1993-08-10 | Praxair Technology, Inc. | Auxiliary column cryogenic rectification system |
GB9213776D0 (en) * | 1992-06-29 | 1992-08-12 | Boc Group Plc | Air separation |
US5309719A (en) * | 1993-02-16 | 1994-05-10 | Air Products And Chemicals, Inc. | Process to produce a krypton/xenon enriched stream from a cryogenic nitrogen generator |
US5341646A (en) * | 1993-07-15 | 1994-08-30 | Air Products And Chemicals, Inc. | Triple column distillation system for oxygen and pressurized nitrogen production |
-
1994
- 1994-03-25 US US08/217,812 patent/US5402647A/en not_active Expired - Lifetime
-
1995
- 1995-03-24 CA CA002145445A patent/CA2145445C/en not_active Expired - Fee Related
- 1995-03-24 KR KR1019950006296A patent/KR100208459B1/ko not_active IP Right Cessation
- 1995-03-24 ES ES95104401T patent/ES2116005T3/es not_active Expired - Lifetime
- 1995-03-24 DE DE69502328T patent/DE69502328T2/de not_active Expired - Fee Related
- 1995-03-24 CN CN95103548A patent/CN1075193C/zh not_active Expired - Fee Related
- 1995-03-24 BR BR9501196A patent/BR9501196A/pt not_active IP Right Cessation
- 1995-03-24 EP EP95104401A patent/EP0674144B1/en not_active Expired - Lifetime
- 1995-03-24 JP JP7090095A patent/JP2989516B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5402647A (en) | 1995-04-04 |
KR100208459B1 (ko) | 1999-07-15 |
EP0674144B1 (en) | 1998-05-06 |
ES2116005T3 (es) | 1998-07-01 |
JPH07270066A (ja) | 1995-10-20 |
CN1126304A (zh) | 1996-07-10 |
DE69502328T2 (de) | 1998-10-01 |
KR950033378A (ko) | 1995-12-22 |
EP0674144A1 (en) | 1995-09-27 |
CA2145445C (en) | 1998-07-07 |
CN1075193C (zh) | 2001-11-21 |
DE69502328D1 (de) | 1998-06-10 |
CA2145445A1 (en) | 1995-09-26 |
JP2989516B2 (ja) | 1999-12-13 |
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