ES415060A1 - Hydrogen fluoride removal proces - Google Patents

Hydrogen fluoride removal proces

Info

Publication number
ES415060A1
ES415060A1 ES415060A ES415060A ES415060A1 ES 415060 A1 ES415060 A1 ES 415060A1 ES 415060 A ES415060 A ES 415060A ES 415060 A ES415060 A ES 415060A ES 415060 A1 ES415060 A1 ES 415060A1
Authority
ES
Spain
Prior art keywords
fluoride
alkali metal
hydrogen fluoride
gas
aqueous
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
ES415060A
Other languages
Spanish (es)
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.)
Universal Oil Products Co
Original Assignee
Universal Oil Products 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 Universal Oil Products Co filed Critical Universal Oil Products Co
Publication of ES415060A1 publication Critical patent/ES415060A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

A method of extracting hydrogen fluoride from a gas containing it, to produce calcium fluoride and hydrogen fluoride-free gas, comprising the steps of: (a) sweeping said hydrogen fluoride-containing gas in a sweep zone with an aqueous solution of alkali metal hydroxide, and recovering, from said scanning zone, a gas free of hydrogen fluoride and an aqueous stream containing alkali metal fluoride, (b) mixing at least a part of said aqueous stream containing alkali metal fluoride with a calcium hydroxide containing medium, in a regeneration zone where the amount of said aqueous alkali metal fluoride containing stream is in excess relative to the stoichiometric amount of alkali metal fluoride re intended to react with said medium containing calcium hydroxide, and to recover a liquid phase of aqueous alkali metal hydroxide solution and a solid phase containing calcium fluoride; (c) recovering said solid phase as said calcium fluoride product; and (d) passing at least a part of said liquid phase to said sweep zone. (Machine-translation by Google Translate, not legally binding)
ES415060A 1972-05-24 1973-05-23 Hydrogen fluoride removal proces Expired ES415060A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25623872A 1972-05-24 1972-05-24

Publications (1)

Publication Number Publication Date
ES415060A1 true ES415060A1 (en) 1976-05-01

Family

ID=22971506

Family Applications (1)

Application Number Title Priority Date Filing Date
ES415060A Expired ES415060A1 (en) 1972-05-24 1973-05-23 Hydrogen fluoride removal proces

Country Status (8)

Country Link
JP (1) JPS5620895B2 (en)
CA (1) CA983241A (en)
CS (1) CS178902B2 (en)
DE (1) DE2325145C3 (en)
ES (1) ES415060A1 (en)
FR (1) FR2185590B1 (en)
GB (1) GB1422363A (en)
IT (1) IT986093B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52143971A (en) * 1976-05-27 1977-11-30 Dainippon Ink & Chem Inc Treatment of exhaust gas containing hydrogen fluorid e etc.
DE19917610A1 (en) * 1999-04-19 2000-10-26 Bayer Ag Process for recycling alkali metal fluorides or bifluorides
US8710282B2 (en) * 2008-03-14 2014-04-29 Honeywell International Inc. Integrated process for the manufacture of fluorinated olefins

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699209A (en) * 1971-02-26 1972-10-17 Universal Oil Prod Co Hf removal system

Also Published As

Publication number Publication date
JPS4949896A (en) 1974-05-15
FR2185590B1 (en) 1976-04-23
IT986093B (en) 1975-01-10
DE2325145C3 (en) 1979-05-31
DE2325145A1 (en) 1973-12-20
JPS5620895B2 (en) 1981-05-16
DE2325145B2 (en) 1978-10-05
CA983241A (en) 1976-02-10
FR2185590A1 (en) 1974-01-04
CS178902B2 (en) 1977-10-31
GB1422363A (en) 1976-01-28

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