BR9402590A - Membrana composta para a separação de fluidos, processo para sua produção e processo para separar pelo menos um componente gasoso de uma mistura de gases - Google Patents

Membrana composta para a separação de fluidos, processo para sua produção e processo para separar pelo menos um componente gasoso de uma mistura de gases

Info

Publication number
BR9402590A
BR9402590A BR9402590A BR9402590A BR9402590A BR 9402590 A BR9402590 A BR 9402590A BR 9402590 A BR9402590 A BR 9402590A BR 9402590 A BR9402590 A BR 9402590A BR 9402590 A BR9402590 A BR 9402590A
Authority
BR
Brazil
Prior art keywords
gases
separating
mixture
production
composite membrane
Prior art date
Application number
BR9402590A
Other languages
English (en)
Inventor
Benjamin Bikson
Joyce Katz Nelson
Original Assignee
Praxair Technology Inc
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
Application filed by Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of BR9402590A publication Critical patent/BR9402590A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1213—Laminated layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/52—Polyethers
    • B01D71/522—Aromatic polyethers
    • B01D71/5222—Polyetherketone, polyetheretherketone, or polyaryletherketone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/52—Polyethers
    • 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
    • B01D53/228—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 characterised by specific membranes
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0095—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/105—Support pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/107—Organic support material
    • B01D69/1071—Woven, non-woven or net mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/82—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/218—Additive materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/219—Specific solvent system

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
BR9402590A 1993-06-30 1994-06-29 Membrana composta para a separação de fluidos, processo para sua produção e processo para separar pelo menos um componente gasoso de uma mistura de gases BR9402590A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/083,598 US5364454A (en) 1993-06-30 1993-06-30 Fluid separation composite membranes prepared from sulfonated aromatic polymers in lithium salt form

Publications (1)

Publication Number Publication Date
BR9402590A true BR9402590A (pt) 1995-05-30

Family

ID=22179406

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9402590A BR9402590A (pt) 1993-06-30 1994-06-29 Membrana composta para a separação de fluidos, processo para sua produção e processo para separar pelo menos um componente gasoso de uma mistura de gases

Country Status (7)

Country Link
US (1) US5364454A (pt)
EP (1) EP0631808A1 (pt)
JP (1) JPH0724277A (pt)
KR (1) KR950000203A (pt)
CN (1) CN1100338A (pt)
BR (1) BR9402590A (pt)
CA (1) CA2127034A1 (pt)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275637A (ja) * 1994-04-08 1995-10-24 Asahi Glass Co Ltd 除湿方法
CA2125840A1 (en) * 1994-06-14 1995-12-15 Universite D'ottawa/ University Of Ottawa Thin film composite membrane as battery separator
US5725633A (en) * 1995-06-30 1998-03-10 Praxair Technology, Inc. Sulfonated polyimide gas separation membranes
US5618334A (en) * 1995-06-30 1997-04-08 Praxair Technology, Inc. Sulfonated polyimide gas separation membranes
US5611843A (en) * 1995-07-07 1997-03-18 Exxon Research And Engineering Company Membranes comprising salts of aminoacids in hydrophilic polymers
US5989742A (en) * 1996-10-04 1999-11-23 The Research Foundation Of State University Of New York Blend membranes based on sulfonated poly(phenylene oxide) for enhanced polymer electrochemical cells
US6103414A (en) * 1995-12-28 2000-08-15 The Research Foundation Of State University Of The New York Blend membranes based on sulfonated poly(phenylene oxide) for polymer electrochemical cells
US6026968A (en) * 1996-05-13 2000-02-22 Nitto Denko Corporation Reverse osmosis composite membrane
US5779897A (en) * 1996-11-08 1998-07-14 Permea, Inc. Hollow fiber membrane device with inert filaments randomly distributed in the inter-fiber voids
CA2320263C (en) * 1998-02-18 2003-04-08 Bg Intellectual Property Limited Process of forming a permeable gas separation material
DE19909028A1 (de) 1999-03-02 2000-09-07 Aventis Res & Tech Gmbh & Co Sulfonierte aromatische Polymere, Membran enthaltend diese Polymeren, Verfahren zu deren Herstellung und deren Verwendung
KR100668798B1 (ko) * 2004-04-22 2007-01-12 한양대학교 산학협력단 폴리스티렌술폰산이 그라프트된 폴리아릴렌 에테르 공중합물
US7297753B2 (en) * 2004-07-20 2007-11-20 Raytheon Company Reduction of permeation through a polymer
KR100728162B1 (ko) * 2005-10-06 2007-06-13 삼성에스디아이 주식회사 연료전지용 고분자 전해질막, 이의 제조방법, 및 이를이용한 연료전지용 막-전극 어셈블리
US8455557B2 (en) 2006-05-24 2013-06-04 Ben Gurion University Of The Negev R&D Authority Membranes, coatings and films and methods for their preparation
CN102405094A (zh) 2009-02-19 2012-04-04 内盖夫研究与发展部本-古里安大学 耐化学性膜、涂层和膜层及它们的制备方法
US9457318B2 (en) 2010-12-12 2016-10-04 Ben-Gurion University Of The Negev Research And Development Authority Anion exchange membranes, methods of preparation and uses
AU2015278210B2 (en) * 2014-06-16 2019-06-20 Core Energy Recovery Solutions Inc. Blended membranes for water vapor transport and methods for preparing same
CN107106995A (zh) * 2014-10-30 2017-08-29 Nok株式会社 碳膜用制膜原液及使用其的碳中空纤维膜的制备方法
CN105903361B (zh) * 2016-05-13 2018-04-20 郑州大学 一种锂离子选择性透过膜及其制备方法
US11872532B2 (en) 2018-09-05 2024-01-16 Campbell Membrane Technologies, Inc. Ultrafiltration membranes for dairy protein separation

Family Cites Families (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259592A (en) * 1961-11-29 1966-07-05 Gen Electric Sulfonated polyphenylene ether cation exchange resin
US3219698A (en) * 1962-01-26 1965-11-23 Borden Co Polyhaloxylenol quaternary ammonium salts
NL295748A (pt) * 1962-07-24
BE635350A (pt) * 1962-07-24
US3350844A (en) * 1964-09-21 1967-11-07 Gen Electric Process for the separation or enrichment of gases
US3510387A (en) * 1965-06-24 1970-05-05 Gen Electric Thin,substantially defect-free organopolysiloxane membrane
US3551244A (en) * 1968-04-03 1970-12-29 North Star Research & Dev Inst Method of producing an ultrathin polymer film laminate
FR2040950A5 (pt) * 1969-04-30 1971-01-22 Rhone Poulenc Sa
US3677976A (en) * 1970-04-09 1972-07-18 Hughes Aircraft Co Commercially useful polyphenylene polymers and method of production thereof
US3631130A (en) * 1970-06-26 1971-12-28 Gen Electric Method for sulfonating poly-(aryleneoxide)
FR2138333B1 (pt) * 1971-05-24 1974-03-08 Rhone Poulenc Sa
US3733307A (en) * 1971-10-14 1973-05-15 Gen Electric Copolymers of polyphenylene ethers
US3735559A (en) * 1972-02-02 1973-05-29 Gen Electric Sulfonated polyxylylene oxide as a permselective membrane for water vapor transport
US3780496A (en) * 1972-07-31 1973-12-25 Gen Electric Sulfonated polyxylene oxide as a permselective membrane for gas separations
US4073724A (en) * 1973-02-27 1978-02-14 Rhone-Poulenc, S.A. Anisotropic phenolic polyether membrane
US3875096A (en) * 1974-03-20 1975-04-01 Us Interior Process for the preparation of a stable salt form of a sulfonated polyarylether sulfone
US3980456A (en) * 1975-03-31 1976-09-14 General Electric Company Method for sealing breaches in multi-layer ultrathin membrane composites
US4035337A (en) * 1976-06-11 1977-07-12 Armstrong Cork Company Sulfide compositions as inhibiting agents for amine-induced yellowing
US4192842A (en) * 1977-07-21 1980-03-11 General Electric Company Method for casting ultrathin methylpentene polymer membranes
US4155793A (en) * 1977-11-21 1979-05-22 General Electric Company Continuous preparation of ultrathin polymeric membrane laminates
JPS5837024A (ja) * 1981-08-29 1983-03-04 Nitto Electric Ind Co Ltd 気体分離用複合膜
US4467001A (en) * 1982-12-27 1984-08-21 Albany International Corp. Process and device for applying, drying and curing a coating on filaments
US4468502A (en) * 1983-06-30 1984-08-28 Monsanto Company Cross-linked polyphenylene oxide
US4468501A (en) * 1983-06-30 1984-08-28 Monsanto Company Cross-linked polyphenylene oxide
US4636314A (en) * 1984-03-16 1987-01-13 Uop Inc. Polymer blended membranes
JPS60216802A (ja) * 1984-04-11 1985-10-30 Mitsubishi Gas Chem Co Inc 気体分離膜
DE3442141A1 (de) * 1984-05-25 1985-12-05 Hüls AG, 4370 Marl Verfahren zur herstellung eines gegen molekulargewichtsabbau geschuetzten polyphenylenethers, bei dem das bei der kupplungsreaktion eingesetzte kupfersalz wiederverwendet werden kann
CA1263572A (en) * 1984-06-15 1989-12-05 Kenichi Ikeda Sulfonated polysulfone composite semipermeable membranes and process for producing the same
JPS6154204A (ja) * 1984-08-13 1986-03-18 モンサイト　コンパニー 複合流体分離膜
US4673717A (en) * 1984-10-03 1987-06-16 Standard Oil Company Process for the modification of aromatic polymers via Friedel-Crafts reactions to produce novel polymers and the use thereof
US4650501A (en) * 1984-10-05 1987-03-17 Union Carbide Corporation Pressure swing adsorption process
US4602922A (en) * 1984-11-09 1986-07-29 Research Foundation Of State University Of New York Method of making membranes for gas separation and the composite membranes
US4824916A (en) * 1985-03-15 1989-04-25 The Dow Chemical Company Water-insoluble, crosslinked, sulfonated aromatic polyamide
GB8512764D0 (en) * 1985-05-21 1985-06-26 Ici Plc Gas separation
GB8513114D0 (en) * 1985-05-23 1985-06-26 Ici Plc Membranes
GB8605817D0 (en) * 1986-03-10 1986-04-16 Ici Plc Membrane
US4717395A (en) * 1986-08-07 1988-01-05 The Dow Chemical Company Gas separations using membranes comprising sulphonated polyether sulphone
EP0256530B1 (en) * 1986-08-14 1991-04-10 Toray Industries, Inc. Gas separation membrane
EP0263212B1 (en) * 1986-10-08 1990-12-27 Ube Industries, Ltd. Method for removing water vapor from water vapor-containing gas
JPS63100917A (ja) * 1986-10-15 1988-05-06 Sumitomo Electric Ind Ltd ガス選択透過性膜及びその製造方法
JPH08175B2 (ja) * 1986-11-28 1996-01-10 エヌオーケー株式会社 スルホン化ポリサルホン膜形成材料の製造法
JP2694341B2 (ja) * 1987-02-04 1997-12-24 ハイドロノーティクス 改良された耐酸化性膜およびその製造方法
US4767422A (en) * 1987-04-08 1988-08-30 Union Carbide Corporation Composite separation membranes and the preparation and use thereof
JPS63264102A (ja) * 1987-04-22 1988-11-01 Agency Of Ind Science & Technol 液体混合物分離膜およびその使用方法
JPS63305904A (ja) * 1987-06-08 1988-12-13 Asahi Chem Ind Co Ltd スルホン酸型半透膜の改質方法
NL8701598A (nl) * 1987-07-07 1989-02-01 Delair Droogtech & Lucht Gasscheidingsinrichting alsmede werkwijze voor het scheiden van gassen met behulp van een dergelijke inrichting.
US4990165A (en) * 1987-07-31 1991-02-05 Union Carbide Industrial Gases Technology Corporation Permeable membranes for enhanced gas separation
WO1989002447A1 (en) * 1987-09-10 1989-03-23 Hewlett-Packard Company Water-vapour permeable material
DE68915554T2 (de) * 1988-01-26 1995-01-12 Asahi Glass Co Ltd Für Dampf permselektive Membran.
JPH01199625A (ja) * 1988-02-04 1989-08-11 Asahi Glass Co Ltd 改良された除湿膜
US4880440A (en) * 1988-09-12 1989-11-14 Union Carbide Corporation Hollow fiber multimembrane cells and permeators
US5062866A (en) * 1988-10-13 1991-11-05 Exxon Research And Engineering Co. Polymeric membrane and process for separation of aliphatically unsaturated hydrocarbons
CA2018418A1 (en) * 1989-06-21 1990-12-21 David D. Andison Transition metal-exchanged ionomer membrane for hydrocarbon separation
US5002590A (en) * 1989-09-19 1991-03-26 Bend Research, Inc. Countercurrent dehydration by hollow fibers
US5009678A (en) * 1989-10-31 1991-04-23 Union Carbide Industrial Gases Technology Corporation Process for recovery of ammonia from an ammonia-containing gas mixture
US4971695A (en) * 1989-10-31 1990-11-20 Union Carbide Industrial Gases Technology Corporation Sulfonated hexafluoro bis-a polysulfone membranes and process for fluid separations
IT1237531B (it) * 1989-12-12 1993-06-08 Snam Spa Procedimento perfezionato per la preparazione di poli(2,6-dimetil-p- ossifenilene) modificato
BR9100570A (pt) * 1990-02-12 1991-10-29 Union Carbide Ind Gases Tech Processo para a desidratacao de gases e membranas composito para o mesmo
US5026479A (en) * 1990-02-13 1991-06-25 Union Carbide Industrial Gases Technology Corporation Fluid separation device
DE4112508A1 (de) * 1991-04-17 1992-10-22 Akzo Nv Synthetische hydrophile membranen und verfahren zu deren herstellung

Also Published As

Publication number Publication date
EP0631808A1 (en) 1995-01-04
KR950000203A (ko) 1995-01-03
CN1100338A (zh) 1995-03-22
JPH0724277A (ja) 1995-01-27
CA2127034A1 (en) 1994-12-31
US5364454A (en) 1994-11-15

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FA8 Dismissal: dismissal - article 36, par. 1 of industrial property law