ES2050691T3 - Membranas de separacion de gas de acetato butirato de celulosa. - Google Patents

Membranas de separacion de gas de acetato butirato de celulosa.

Info

Publication number
ES2050691T3
ES2050691T3 ES88117189T ES88117189T ES2050691T3 ES 2050691 T3 ES2050691 T3 ES 2050691T3 ES 88117189 T ES88117189 T ES 88117189T ES 88117189 T ES88117189 T ES 88117189T ES 2050691 T3 ES2050691 T3 ES 2050691T3
Authority
ES
Spain
Prior art keywords
cellulose acetate
gas
percent
ammonia
membranes
Prior art date
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.)
Expired - Lifetime
Application number
ES88117189T
Other languages
English (en)
Inventor
Bhupender Singh Minhas
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.)
WR Grace and Co Conn
WR Grace and Co
Original Assignee
WR Grace and Co Conn
WR Grace and Co
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 WR Grace and Co Conn, WR Grace and Co filed Critical WR Grace and Co Conn
Application granted granted Critical
Publication of ES2050691T3 publication Critical patent/ES2050691T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • B01D71/18—Mixed esters, e.g. cellulose acetate-butyrate
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0476—Purge gas treatment, e.g. for removal of inert gases or recovery of H2
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

MEMBRANAS DE SEPARACION DE GASES DE ACETATO BUTIRATO DE CELULOSA SE PREPARAN A PARTIR DE UNA DISOLUCION EN MOLDE, QUE CONTIENE DE 10-30 % APROXIMADAMENTE DE POLIMERO, 35-70 % DE DISOLVENTE, Y 15-30 % DE AGENTES FORMADORES DE POROS. UNA DISOLUCION PARA MOLDEAR PELICULAS SE VIERTE SOBRE UNA SUPERFICIE SOPORTE PRACTICAMENTE LISA Y SE FORMA UNA CAPA DENSA SOBRE LA SUPERFIICE DE PELICULA EXPUESTA. LA PELICULA SE SOLIDIFICA, LAVA Y SECA PARA PRODUCIR UNA MEMBRANA DE SEPARACION DE GASES ESPECIALMENTE UTIL. LOS POLIMEROS DE ACETATO DE CELULOSA UTILEZADOS EN ESTA PREPARACION TIENEN PESOS MOLECULARES DE 20000 APROXIMADAMENTE POR LO MENOS, Y APROXIMADAMENTE 10-45 % DE GRUPOS BUTIRILO, APROXIMADAMENTE 2-35 % DE GRUPOS ACETILO Y APROXIMADAMENTE 0,8-2 % DE GRUPOS HIDROXILO, EN PESO. LAS MEMBRANAS SE PUEDEN UTILIZAR PARA SEPARAR LA ALIMENTACION GASEOSA EN UNA FRACCION INFILTRADA Y UNA FRACCION RESIDUAL, Y SON ESPECIALMENTE UTILES PARA SEPARAR GASES EN LA CORRIENTE DE GAS DE PURGA DE PLANTAS DE AMONIACOPARA RECUPERAR UN IMPREGNADO QUE ES RELATIVAMENTE RICO EN HIDROGENO. LAS MEMBRANAS DE ACETATO BUTIRATO DE CELULOSA SE PUEDEN USAR PARA MEJORAR LA SEPARACION DE GASES DE PURGA DE PLANTAS DE AMONIACO QUE CONTIENEN AMONIACO ASI COMO HIDROGENO Y NITROGENO, ESPECIALMENTE CUANDO NO HAY PRETRATAMIENTO DEL GAS DE PURGA PARA ELIMINAR EL GAS AMONIACO.
ES88117189T 1987-10-19 1988-10-15 Membranas de separacion de gas de acetato butirato de celulosa. Expired - Lifetime ES2050691T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10964887A 1987-10-19 1987-10-19

Publications (1)

Publication Number Publication Date
ES2050691T3 true ES2050691T3 (es) 1994-06-01

Family

ID=22328813

Family Applications (1)

Application Number Title Priority Date Filing Date
ES88117189T Expired - Lifetime ES2050691T3 (es) 1987-10-19 1988-10-15 Membranas de separacion de gas de acetato butirato de celulosa.

Country Status (5)

Country Link
EP (1) EP0312943B1 (es)
AT (1) ATE103205T1 (es)
CA (1) CA1317423C (es)
DE (1) DE3888623T2 (es)
ES (1) ES2050691T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020092018A1 (en) * 2018-10-31 2020-05-07 Fluid Technology Solutions (Fts), Inc. Amine functional cellulose substrate for thin film composite membranes and methods of preparing the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483282A (en) * 1967-12-21 1969-12-09 Universal Water Corp Production of semipermeable membranes
US3607329A (en) * 1969-04-22 1971-09-21 Us Interior Cellulose acetate butyrate semipermeable membranes and their production
US3593855A (en) * 1969-05-13 1971-07-20 Westinghouse Electric Corp High flow porous reverse osmosis membranes containing lipids
DE3525235C1 (de) * 1985-07-15 1986-11-27 Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht Verfahren zur Herstellung und Erhoehung der Selektivitaet einer integralasymmetrischen Membran
US4746475A (en) * 1986-10-10 1988-05-24 Hoechst Celanese Corporation Ultrathin cellulose ester polymer films and their preparation

Also Published As

Publication number Publication date
ATE103205T1 (de) 1994-04-15
DE3888623T2 (de) 1994-07-21
CA1317423C (en) 1993-05-11
EP0312943B1 (en) 1994-03-23
DE3888623D1 (de) 1994-04-28
EP0312943A3 (en) 1990-01-10
EP0312943A2 (en) 1989-04-26

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