ES2192276T3 - Proceso para la recuperacion de cf4 y c2f6 a partir de un gas. - Google Patents

Proceso para la recuperacion de cf4 y c2f6 a partir de un gas.

Info

Publication number
ES2192276T3
ES2192276T3 ES97952294T ES97952294T ES2192276T3 ES 2192276 T3 ES2192276 T3 ES 2192276T3 ES 97952294 T ES97952294 T ES 97952294T ES 97952294 T ES97952294 T ES 97952294T ES 2192276 T3 ES2192276 T3 ES 2192276T3
Authority
ES
Spain
Prior art keywords
vent gas
gas
recovery
purified
inorganic fluorides
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
ES97952294T
Other languages
English (en)
Inventor
Yao-En Li
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Application granted granted Critical
Publication of ES2192276T3 publication Critical patent/ES2192276T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/22—Collecting emitted gases
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds

Abstract

UN PROCEDIMIENTO PARA LA RECUPERACION DE AL MENOS UNO DE ENTRE CF 4 Y C 2 F 6 DE UN GAS DE ESCAPE DE UNA CUBA ELECTROLITICA DE ALUMINIO. EL PROCEDIMIENTO CONSISTE EN LOS PASOS SIGUIENTES: (A) SE RETIRAN LOS FLUORUROS INORGANICOS DE UN GAS DE ESCAPE QUE COMPRENDE FLUORUROS INORGANICOS Y AL MENOS UNO DE ENTRE CF 4 Y C 2 F 6 PARA OBTENER UN GAS DE ESCAPE PURIFICADO; Y (B) SE PONE EN CONTACTO EL GAS DE ESCAPE PURIFICADO CON UNA MEMBRANA BAJO CONDICIONES EFECTIVAS PARA OBTENER UNA CORRIENTE DE CONCENTRADOS RICA EN AL MENOS UNO DE ENTRE CF 4 Y C 2 F 6 Y UNA CORRIENTE DE PERMEADOS POBRE EN AL MENOS UNO DE ENTRE CF 4 Y C 2 F SUB ,6 .
ES97952294T 1996-12-23 1997-12-16 Proceso para la recuperacion de cf4 y c2f6 a partir de un gas. Expired - Lifetime ES2192276T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/772,469 US5814127A (en) 1996-12-23 1996-12-23 Process for recovering CF4 and C2 F6 from a gas

Publications (1)

Publication Number Publication Date
ES2192276T3 true ES2192276T3 (es) 2003-10-01

Family

ID=25095170

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97952294T Expired - Lifetime ES2192276T3 (es) 1996-12-23 1997-12-16 Proceso para la recuperacion de cf4 y c2f6 a partir de un gas.

Country Status (13)

Country Link
US (2) US5814127A (es)
EP (1) EP0951337B1 (es)
JP (1) JP3274474B2 (es)
CN (1) CN1244813A (es)
AT (1) ATE232132T1 (es)
AU (1) AU715057B2 (es)
BR (1) BR9713633A (es)
CA (1) CA2275907C (es)
DE (1) DE69718933T2 (es)
ES (1) ES2192276T3 (es)
NO (1) NO321288B1 (es)
PL (1) PL334243A1 (es)
WO (1) WO1998028062A1 (es)

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EP2832421B1 (en) 2013-07-30 2016-05-25 Haldor Topsøe A/S Process for producing high purity co by membrane purification of soec-produced co
CN106149008A (zh) * 2015-04-22 2016-11-23 沈阳铝镁科技有限公司 铝电解槽烟道自动清灰装置
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Also Published As

Publication number Publication date
CA2275907C (en) 2005-11-15
NO321288B1 (no) 2006-04-18
ATE232132T1 (de) 2003-02-15
CA2275907A1 (en) 1998-07-02
BR9713633A (pt) 2000-04-11
NO992990D0 (no) 1999-06-18
AU5593798A (en) 1998-07-17
EP0951337A1 (en) 1999-10-27
US5968334A (en) 1999-10-19
NO992990L (no) 1999-08-20
DE69718933D1 (de) 2003-03-13
EP0951337B1 (en) 2003-02-05
DE69718933T2 (de) 2003-12-24
PL334243A1 (en) 2000-02-14
US5814127A (en) 1998-09-29
JP3274474B2 (ja) 2002-04-15
AU715057B2 (en) 2000-01-13
CN1244813A (zh) 2000-02-16
WO1998028062A1 (en) 1998-07-02
JP2000509653A (ja) 2000-08-02

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