ES452056A1 - Purifying hydroflouric acid - Google Patents

Purifying hydroflouric acid

Info

Publication number
ES452056A1
ES452056A1 ES452056A ES452056A ES452056A1 ES 452056 A1 ES452056 A1 ES 452056A1 ES 452056 A ES452056 A ES 452056A ES 452056 A ES452056 A ES 452056A ES 452056 A1 ES452056 A1 ES 452056A1
Authority
ES
Spain
Prior art keywords
h2so4
preliminary
sulfuric acid
washing
acid
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
ES452056A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of ES452056A1 publication Critical patent/ES452056A1/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
    • 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
    • B01D53/14—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 absorption
    • B01D53/1456—Removing acid components
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

Procedure for obtaining highly pure concentrated hydrofluoric acid, characterized in that the crude HF gases, obtained from the reaction of fluorite with sulfuric acid, are purified in at least two preliminary H2-SO4 washing steps, followed by HF washing, water coolers and at least two brine coolers and a H2SO4 waste gas wash, passing the total amount of the sulfuric acid necessary for the reaction with fluorite, including the amount of oleum additionally used through the waste gas wash of H2SO4 then introducing this sulfuric acid in the two preliminary H2SO4 washing stages together with a part of the amount of oleum necessary to adjust the charge acid in such proportions, so that the water content in each of the two stages of preliminary H2SO4 washes are kept within the range of 6 to 10% by weight. (Machine-translation by Google Translate, not legally binding)
ES452056A 1975-10-02 1976-10-01 Purifying hydroflouric acid Expired ES452056A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2543965A DE2543965C3 (en) 1975-10-02 1975-10-02 Process for the purification of reaction gases in hydrofluoric acid production

Publications (1)

Publication Number Publication Date
ES452056A1 true ES452056A1 (en) 1977-10-01

Family

ID=5958042

Family Applications (1)

Application Number Title Priority Date Filing Date
ES452056A Expired ES452056A1 (en) 1975-10-02 1976-10-01 Purifying hydroflouric acid

Country Status (10)

Country Link
BE (1) BE846827A (en)
BR (1) BR7606566A (en)
CS (1) CS196325B2 (en)
DE (1) DE2543965C3 (en)
ES (1) ES452056A1 (en)
FR (1) FR2326378A1 (en)
GB (1) GB1567778A (en)
IT (1) IT1066315B (en)
NL (1) NL7610844A (en)
ZA (1) ZA765894B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11325063B2 (en) * 2020-08-31 2022-05-10 Beijing University Of Chemical Technology Production device and production method of electronic grade hydrofluoric acid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5032371A (en) * 1989-02-27 1991-07-16 Mallinckrodt Specialty Chemicals Co. Process for the continuous recovery of hydrogen fluoride gas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725536A (en) 1968-02-26 1973-04-03 R Gentili Method of the continuous production of hydrofluoric acid
DE2209960C3 (en) 1972-03-02 1979-10-11 Bayer Ag, 5090 Leverkusen Process for the processing of raw gases containing hydrogen fluoride from hydrofluoric acid production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11325063B2 (en) * 2020-08-31 2022-05-10 Beijing University Of Chemical Technology Production device and production method of electronic grade hydrofluoric acid

Also Published As

Publication number Publication date
DE2543965C3 (en) 1981-07-09
DE2543965A1 (en) 1977-04-07
FR2326378A1 (en) 1977-04-29
GB1567778A (en) 1980-05-21
NL7610844A (en) 1977-04-05
CS196325B2 (en) 1980-03-31
FR2326378B1 (en) 1980-05-30
IT1066315B (en) 1985-03-04
DE2543965B2 (en) 1980-10-16
BE846827A (en) 1977-04-01
ZA765894B (en) 1977-09-28
BR7606566A (en) 1977-05-31

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