BR9002220A - Sistema e processo aperfeicoados para a producao de nitrogenio e/ou oxigenio seco de alta pureza a partir do ar - Google Patents

Sistema e processo aperfeicoados para a producao de nitrogenio e/ou oxigenio seco de alta pureza a partir do ar

Info

Publication number
BR9002220A
BR9002220A BR909002220A BR9002220A BR9002220A BR 9002220 A BR9002220 A BR 9002220A BR 909002220 A BR909002220 A BR 909002220A BR 9002220 A BR9002220 A BR 9002220A BR 9002220 A BR9002220 A BR 9002220A
Authority
BR
Brazil
Prior art keywords
air
high purity
purity nitrogen
production
dry oxygen
Prior art date
Application number
BR909002220A
Other languages
English (en)
Inventor
Ravi Prasad
Oscar William Haas
Harry Cheung
Original Assignee
Union Carbide Ind Gases Tech
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23378448&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9002220(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Union Carbide Ind Gases Tech filed Critical Union Carbide Ind Gases Tech
Publication of BR9002220A publication Critical patent/BR9002220A/pt

Links

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
    • F25J3/04636—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 hybrid air separation unit, e.g. combined process by cryogenic separation and non-cryogenic separation techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/225—Multiple stage diffusion
    • B01D53/226—Multiple stage diffusion in serial connexion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/268—Drying gases or vapours by diffusion
    • 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
    • F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
    • 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
    • F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
    • 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
    • F25J2205/80—Processes or apparatus using other separation and/or other processing means using membrane, i.e. including a permeation step
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Drying Of Gases (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Treating Waste Gases (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
BR909002220A 1989-05-12 1990-05-11 Sistema e processo aperfeicoados para a producao de nitrogenio e/ou oxigenio seco de alta pureza a partir do ar BR9002220A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/350,848 US4934148A (en) 1989-05-12 1989-05-12 Dry, high purity nitrogen production process and system

Publications (1)

Publication Number Publication Date
BR9002220A true BR9002220A (pt) 1991-08-13

Family

ID=23378448

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909002220A BR9002220A (pt) 1989-05-12 1990-05-11 Sistema e processo aperfeicoados para a producao de nitrogenio e/ou oxigenio seco de alta pureza a partir do ar

Country Status (10)

Country Link
US (1) US4934148A (pt)
EP (1) EP0397192B2 (pt)
JP (2) JPH0317489A (pt)
KR (1) KR950007915B1 (pt)
CN (1) CN1023103C (pt)
AT (1) ATE108086T1 (pt)
BR (1) BR9002220A (pt)
CA (1) CA2016569A1 (pt)
DE (1) DE69010398T2 (pt)
ES (1) ES2056295T3 (pt)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5064447A (en) * 1976-11-19 1991-11-12 E. I. Du Pont De Nemours And Company Process for recovering organic vapors from air
US5116396A (en) * 1989-05-12 1992-05-26 Union Carbide Industrial Gases Technology Corporation Hybrid prepurifier for cryogenic air separation plants
US5032148A (en) * 1989-11-07 1991-07-16 Membrane Technology & Research, Inc. Membrane fractionation process
US5354547A (en) * 1989-11-14 1994-10-11 Air Products And Chemicals, Inc. Hydrogen recovery by adsorbent membranes
US5507856A (en) * 1989-11-14 1996-04-16 Air Products And Chemicals, Inc. Hydrogen recovery by adsorbent membranes
US5035726A (en) * 1990-05-24 1991-07-30 Air Products And Chemicals, Inc. Process for removing oxygen from crude argon
US5069686A (en) * 1990-08-07 1991-12-03 Membrane Technology & Research, Inc. Process for reducing emissions from industrial sterilizers
US5084073A (en) * 1990-10-11 1992-01-28 Union Carbide Industrial Gases Technology Corporation Membrane drying process and system
US5102432A (en) * 1990-12-10 1992-04-07 Union Carbide Industrial Gases Technology Corporation Three-stage membrane gas separation process and system
US5226932A (en) * 1991-10-07 1993-07-13 Praxair Technology, Inc. Enhanced meambrane gas separations
US5226931A (en) * 1991-10-24 1993-07-13 Canadian Liquid Air Ltd. -Air Liquide Canada Ltee. Process for supplying nitrogen from an on-site plant
US5169412A (en) * 1991-11-20 1992-12-08 Praxair Technology Inc. Membrane air drying and separation operations
DE4203634A1 (de) * 1992-02-08 1993-08-12 Geesthacht Gkss Forschung Verfahren zur trennung von organischen bestandteilen aus gasgemischen
US5205842A (en) * 1992-02-13 1993-04-27 Praxair Technology, Inc. Two stage membrane dryer
US5344480A (en) * 1992-05-05 1994-09-06 Praxair Technology, Inc. Pressurizing with and recovering helium
US5240472A (en) * 1992-05-29 1993-08-31 Air Products And Chemicls, Inc. Moisture removal from a wet gas
US5332424A (en) * 1993-07-28 1994-07-26 Air Products And Chemicals, Inc. Hydrocarbon fractionation by adsorbent membranes
US5463869A (en) * 1994-08-12 1995-11-07 Air Products And Chemicals, Inc. Integrated adsorption/cryogenic distillation process for the separation of an air feed
DE4435702C2 (de) * 1994-10-06 1998-11-26 Druckluft Dannoehl Gmbh Verfahren und Vorrichtung zum Erzeugen von Stickstoff
US5961692A (en) * 1997-01-30 1999-10-05 Howell Laboratories, Inc. System and method of improving performance of a gas membrane dehydrator
EP0860194A1 (en) * 1997-02-21 1998-08-26 Aquilo Gas Separation B.V. A process for drying compressed air
US5944874A (en) * 1997-06-23 1999-08-31 Praxair Technology, Inc. Solid electrolyte ionic conductor systems for the production of high purity nitrogen
US6087029A (en) * 1998-01-06 2000-07-11 Aer Energy Resources, Inc. Water recovery using a bi-directional air exchanger for a metal-air battery
FR2778581B1 (fr) * 1998-05-12 2000-06-09 Commissariat Energie Atomique Procede de purification, et de concentration en un constituant minoritaire, d'un melange gazeux, procede de detection de ce constituant, et installation
US6346138B1 (en) * 1999-09-01 2002-02-12 Praxair Technology, Inc. Purification of hexafluoroethane
DE10100114A1 (de) * 2001-01-03 2002-07-04 Linde Ag Verfahren und Vorrichtung zum Regenerieren eines Adsorbers
US6610122B1 (en) * 2002-04-30 2003-08-26 Hamilton Sundstrand Corp. Water recuperation for a carbon dioxide (CO2) removal system
GB0214412D0 (en) * 2002-06-21 2002-07-31 Svonja George Method and apparatus for drying
US6881245B2 (en) * 2002-10-18 2005-04-19 Bendix Commercial Vehicle Systems Llc Membrane air dryer and method of mounting a membrane dryer to a vehicle
US7025803B2 (en) * 2002-12-02 2006-04-11 L'Air Liquide Societe Anonyme A Directoire et Counsel de Surveillance Pour L'Etude et L'Exploration des Procedes Georges Claude Methane recovery process
US20060231099A1 (en) * 2005-04-19 2006-10-19 Generon Igs, Inc. System and method for making dry and hydrocarbon-free compressed air
JP4547673B2 (ja) * 2005-05-11 2010-09-22 Ｓｍｃ株式会社 空気圧回路におけるエアドライヤの水分パージ方法及びそのシステム
TWI326691B (en) * 2005-07-22 2010-07-01 Kraton Polymers Res Bv Sulfonated block copolymers, method for making same, and various uses for such block copolymers
JP4521373B2 (ja) * 2006-04-04 2010-08-11 エア・ウォーター株式会社 高純度窒素ガスの製造方法
US7384297B2 (en) * 2006-11-07 2008-06-10 King Jr Lloyd Herbert Wire connector
US7780768B2 (en) * 2006-11-28 2010-08-24 Inogen, Inc. Gas concentrator with improved water rejection capability
US8012539B2 (en) * 2008-05-09 2011-09-06 Kraton Polymers U.S. Llc Method for making sulfonated block copolymers, method for making membranes from such block copolymers and membrane structures
CA2728244A1 (en) * 2008-06-19 2009-12-23 William Brigham Hybrid air seperation method with noncryogenic preliminary enrichment and cryogenic purification based on a single component gas or liquid generator
US8152898B2 (en) * 2008-10-24 2012-04-10 Praxair Technology, Inc. Helium recovery process
FR2938320B1 (fr) * 2008-11-10 2013-03-15 Air Liquide Installation integree de separation d'air et de chauffage d'eau destinee a une chaudiere
US7972415B2 (en) * 2008-12-11 2011-07-05 Spx Corporation Membrane-based compressed air breathing system
US8263713B2 (en) * 2009-10-13 2012-09-11 Kraton Polymers U.S. Llc Amine neutralized sulfonated block copolymers and method for making same
US8445631B2 (en) * 2009-10-13 2013-05-21 Kraton Polymers U.S. Llc Metal-neutralized sulfonated block copolymers, process for making them and their use
US20110185891A1 (en) 2010-02-02 2011-08-04 Generon Igs, Inc. Sweep gas for membrane-based dehydration modules
US9429366B2 (en) 2010-09-29 2016-08-30 Kraton Polymers U.S. Llc Energy recovery ventilation sulfonated block copolymer laminate membrane
US9394414B2 (en) 2010-09-29 2016-07-19 Kraton Polymers U.S. Llc Elastic, moisture-vapor permeable films, their preparation and their use
US9365662B2 (en) 2010-10-18 2016-06-14 Kraton Polymers U.S. Llc Method for producing a sulfonated block copolymer composition
US9861941B2 (en) 2011-07-12 2018-01-09 Kraton Polymers U.S. Llc Modified sulfonated block copolymers and the preparation thereof
FR2985437A1 (fr) * 2012-01-10 2013-07-12 Alstom Technology Ltd Procede de filtration d'effluents gazeux d'une installation industrielle
US20150203359A1 (en) * 2014-01-17 2015-07-23 Air Products And Chemicals, Inc. System and Process for Producing Ammonia Using an Ion Transport Membrane, Gasifier, and Ammonia Synthesis Unit
CN106000107B (zh) * 2016-05-26 2019-01-25 天邦膜技术国家工程研究中心有限责任公司 一种真空膜渗透法水溶氦提取系统
CN105879594B (zh) * 2016-05-26 2018-11-20 天邦膜技术国家工程研究中心有限责任公司 一种没有氦气损失的含氦水溶气脱湿方法
AU2018269511A1 (en) 2017-05-16 2019-11-28 Terrence J. Ebert Apparatus and process for liquefying gases
JP7277801B2 (ja) * 2021-03-15 2023-05-19 ダイキン工業株式会社 吸着システム

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940071B1 (pt) * 1970-01-09 1974-10-30
US3735558A (en) * 1971-06-29 1973-05-29 Perma Pure Process Inc Process for separating fluids and apparatus
US3967464A (en) * 1974-07-22 1976-07-06 Air Products And Chemicals, Inc. Air separation process and system utilizing pressure-swing driers
JPS5263178A (en) * 1975-11-17 1977-05-25 Toshiba Corp Gas separation unit
US4264340A (en) * 1979-02-28 1981-04-28 Air Products And Chemicals, Inc. Vacuum swing adsorption for air fractionation
US4375367A (en) * 1981-04-20 1983-03-01 Air Products And Chemicals, Inc. Lower power, freon refrigeration assisted air separation
JPS58150788A (ja) * 1982-03-03 1983-09-07 日本酸素株式会社 空気利用装置の水、炭酸ガスの分離除去方法
US4466946A (en) * 1982-03-12 1984-08-21 Standard Oil Company (Indiana) CO2 Removal from high CO2 content hydrocarbon containing streams
US4453957A (en) * 1982-12-02 1984-06-12 Union Carbide Corporation Double column multiple condenser-reboiler high pressure nitrogen process
US4448595A (en) * 1982-12-02 1984-05-15 Union Carbide Corporation Split column multiple condenser-reboiler air separation process
JPS60238120A (ja) * 1984-05-11 1985-11-27 Takuma Sogo Kenkyusho:Kk 空気の除湿装置
US4589888A (en) * 1984-10-05 1986-05-20 Union Carbide Corporation Pressure swing adsorption process
US4594085A (en) * 1984-11-15 1986-06-10 Union Carbide Corporation Hybrid nitrogen generator with auxiliary reboiler drive
US4654063A (en) * 1984-12-21 1987-03-31 Air Products And Chemicals, Inc. Process for recovering hydrogen from a multi-component gas stream
US4645516A (en) * 1985-05-24 1987-02-24 Union Carbide Corporation Enhanced gas separation process
US4654047A (en) * 1985-08-23 1987-03-31 Air Products And Chemicals, Inc. Hybrid membrane/cryogenic process for hydrogen purification
GB2181528B (en) * 1985-09-30 1989-09-06 Boc Group Plc Air separation
EG18145A (en) * 1985-12-10 1992-08-30 Albany Int Corp Hollow fiber separatory modul with encased fiber bundle
US4687498A (en) * 1986-02-24 1987-08-18 The Boc Group, Inc. Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means
US4690695A (en) * 1986-04-10 1987-09-01 Union Carbide Corporation Enhanced gas separation process
EP0263212B1 (en) * 1986-10-08 1990-12-27 Ube Industries, Ltd. Method for removing water vapor from water vapor-containing gas
US4701187A (en) * 1986-11-03 1987-10-20 Air Products And Chemicals, Inc. Process for separating components of a gas stream
US4761167A (en) * 1986-12-12 1988-08-02 Air Products And Chemicals, Inc. Hydrocarbon recovery from fuel gas
FR2636341A1 (fr) * 1988-09-12 1990-03-16 Air Liquide Procede et installation de recuperation des hydrocarbures les plus lourds d'un melange gazeux

Also Published As

Publication number Publication date
JPH0732483U (ja) 1995-06-16
JPH0317489A (ja) 1991-01-25
DE69010398D1 (de) 1994-08-11
DE69010398T2 (de) 1994-12-22
EP0397192A2 (en) 1990-11-14
EP0397192A3 (en) 1991-01-23
US4934148A (en) 1990-06-19
CN1023103C (zh) 1993-12-15
KR950007915B1 (ko) 1995-07-21
ES2056295T3 (es) 1994-10-01
CA2016569A1 (en) 1990-11-12
CN1048683A (zh) 1991-01-23
KR900017903A (ko) 1990-12-20
ATE108086T1 (de) 1994-07-15
EP0397192B2 (en) 1996-12-18
EP0397192B1 (en) 1994-07-06

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Legal Events

Date Code Title Description
FF Decision: intention to grant
KD Notifcation of receipt (letter patent)
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law