GB902798A - Process for the preparation of aluminium fluoride from gases containing hydrofluoric acid - Google Patents

Process for the preparation of aluminium fluoride from gases containing hydrofluoric acid

Info

Publication number
GB902798A
GB902798A GB2261459A GB2261459A GB902798A GB 902798 A GB902798 A GB 902798A GB 2261459 A GB2261459 A GB 2261459A GB 2261459 A GB2261459 A GB 2261459A GB 902798 A GB902798 A GB 902798A
Authority
GB
United Kingdom
Prior art keywords
al2o3
gas
less
preparation
aluminium fluoride
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
Application number
GB2261459A
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.)
Pechiney SA
Original Assignee
Pechiney SA
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 Pechiney SA filed Critical Pechiney SA
Publication of GB902798A publication Critical patent/GB902798A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/19—Fluorine; Hydrogen fluoride
    • C01B7/191—Hydrogen fluoride
    • C01B7/195—Separation; Purification
    • C01B7/197—Separation; Purification by adsorption
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/50—Fluorides
    • 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
    • Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A gas mixture containing less than 1% HF is contacted at less than 650 DEG C. with activated alumina to remove HF as aluminium fluoride. The Al2O3 should have a surface area more than 150 m2/g, combined water content 0,1 to 0,2 mole per mole Al2O3, and water absorption less than 20 g. per 100 g. Al2O3 at 15 DEG -25 DEG C. under atmospheric conditions. The gas may flow in countercurrent to the Al2O3 at a rate less than 1500 v/v/hr., and the temperature may be 15 DEG C. or above. The gas treated may be gas containing heavy hydro carbons evolved in Soderberg anode cells for the preparation of Al by electrolysis of Al2O3 in cryolite, which gas has been burned with O2-containing gas in a chamber containing sintered Al2O3 at above 800 DEG C.
GB2261459A 1958-07-03 1959-07-01 Process for the preparation of aluminium fluoride from gases containing hydrofluoric acid Expired GB902798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR769395 1958-07-03

Publications (1)

Publication Number Publication Date
GB902798A true GB902798A (en) 1962-08-09

Family

ID=8706887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2261459A Expired GB902798A (en) 1958-07-03 1959-07-01 Process for the preparation of aluminium fluoride from gases containing hydrofluoric acid

Country Status (8)

Country Link
BE (1) BE580324A (en)
CH (1) CH381651A (en)
DE (1) DE1091994B (en)
ES (1) ES250481A1 (en)
FR (1) FR1209223A (en)
GB (1) GB902798A (en)
LU (1) LU37380A1 (en)
NL (1) NL240850A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955266A1 (en) * 1998-05-07 1999-11-10 Ausimont S.p.A. Process for preparing aluminum fluoride
US6187280B1 (en) * 1997-05-22 2001-02-13 Ausimont S.P.A. Process for the preparation of aluminum fluoride

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009214A (en) * 1975-04-25 1977-02-22 The Lummus Company Separation of hydrogen fluoride from hydrogen chloride gas
US4113832A (en) * 1977-11-28 1978-09-12 Kaiser Aluminum & Chemical Corporation Process for the utilization of waste materials from electrolytic aluminum reduction systems
FR2440222A1 (en) * 1978-10-31 1980-05-30 Air Ind Regenerating particulate adsorbent material - charged with volatile cpds. of different thermal stabilities, partic. particles of alumina which have adsorbed tars and fluorinated cpds.
EP0011027B1 (en) * 1978-10-31 1984-02-15 Air Industrie Process for treating an adsorbent material in the form of particles loaded with at least two volatile compounds of differing thermal stability

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6187280B1 (en) * 1997-05-22 2001-02-13 Ausimont S.P.A. Process for the preparation of aluminum fluoride
EP0955266A1 (en) * 1998-05-07 1999-11-10 Ausimont S.p.A. Process for preparing aluminum fluoride
US6436362B1 (en) 1998-05-07 2002-08-20 Ausimont S.P.A. Process for preparing aluminum fluoride

Also Published As

Publication number Publication date
NL240850A (en) 1964-01-27
CH381651A (en) 1964-09-15
DE1091994B (en) 1960-11-03
LU37380A1 (en) 1959-09-02
BE580324A (en) 1960-01-04
ES250481A1 (en) 1960-04-16
FR1209223A (en) 1960-02-29

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