GB1156560A - Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride - Google Patents

Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride

Info

Publication number
GB1156560A
GB1156560A GB5455366A GB5455366A GB1156560A GB 1156560 A GB1156560 A GB 1156560A GB 5455366 A GB5455366 A GB 5455366A GB 5455366 A GB5455366 A GB 5455366A GB 1156560 A GB1156560 A GB 1156560A
Authority
GB
United Kingdom
Prior art keywords
scrubbing
gas
suitably
hydrogen
hydrochloric 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
GB5455366A
Inventor
Peter Frisch
Jurgen Korinth
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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
Priority to DE19641567504 priority Critical patent/DE1567504B1/en
Priority to NL6615605A priority patent/NL154431B/en
Priority to FR83601A priority patent/FR1507252A/en
Priority to BE689762D priority patent/BE689762A/xx
Application filed by Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Priority to GB5455366A priority patent/GB1156560A/en
Priority to US678763A priority patent/US3402525A/en
Publication of GB1156560A publication Critical patent/GB1156560A/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
    • C01B7/01—Chlorine; Hydrogen chloride
    • 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
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/07—Purification ; Separation
    • C01B7/0706—Purification ; Separation of hydrogen chloride
    • 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
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/07—Purification ; Separation
    • C01B7/0706—Purification ; Separation of hydrogen chloride
    • C01B7/0718—Purification ; Separation of hydrogen chloride by adsorption
    • C01B7/0725—Purification ; Separation of hydrogen chloride by adsorption by active carbon
    • 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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,156,560. Separating hydrogen chloride and hydrogen fluoride. FARBWERKE HOECHST A.G. 6 Dec., 1966, No. 54553/66. Heading B1L. [Also in Division C1A] Mixtures of HC1 and HF gases are separated by scrubbing the gaseous mixture with concentrated hydrochloric acid in countercurrent flow in a cascade arrangement in which mixing of the components between individual stages is minimized, suitably a valve tray, a slotted tray, or a bubble cap column having preferably 10-30 trays. The scrubbing is best conducted at (below 50‹C., and preferably at -20 to 20‹C., although it may be carried out below -35‹C., provided that formation of solid phase is avoided; the pressure in the scrubbing process may be atmospheric to 5 atmospheres gauge, but is preferably less than 3 atmospheres gauge. Water is introduced to the scrubbing column either as such or in the concentrated hydrochloric acid in an amount of at least 5 g., and preferably 20-120 g., per mole of HF to be absorbed; the hydrochloric acid used for scrubbing is suitably obtamed by adiabatically absorbing the HCl gas from which the HF has been scrubbed in water, and is suitably of 32-45% strength. The gas mixtures so treated may also contain inert, water insoluble substances such as hydrogen, nitrogen, oxygen, chlorine, hydrocarbons, or halogenated derivatives of hydrocarbons, but the process is particularly applicable to gas mixtures obtained by fluorinating chlorinated hydrocarbons having 1-4 carbon atoms. Such gas streams are preferably first passed in 1-60 seconds through a bed of active carbon at ambient temperature to 200‹C., 'and 1-10 atmospheres in the presence of 1-100 g. steam/m<SP>3</SP>crude gas, the steam used in such treatment suitably being added in the form of aqueous HCl or HF obtained as bottoms in the subsequent scrubbing column to which the pre-treated gas stream then passes.
GB5455366A 1964-12-28 1966-12-06 Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride Expired GB1156560A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19641567504 DE1567504B1 (en) 1964-12-28 1964-12-28 Process for the extraction or removal of hydrogen fluoride from gas mixtures
NL6615605A NL154431B (en) 1964-12-28 1966-11-04 METHOD FOR SEPARATING HYDROGEN FLUORIDE FROM FLUORATION GAS MIXTURES.
FR83601A FR1507252A (en) 1964-12-28 1966-11-15 Process for the separation of hydrofluoric gas from gas mixtures containing hydrochloric and hydrofluoric gases
BE689762D BE689762A (en) 1964-12-28 1966-11-16
GB5455366A GB1156560A (en) 1964-12-28 1966-12-06 Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride
US678763A US3402525A (en) 1964-12-28 1967-10-27 Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEF0044820 1964-12-28
NL6615605A NL154431B (en) 1964-12-28 1966-11-04 METHOD FOR SEPARATING HYDROGEN FLUORIDE FROM FLUORATION GAS MIXTURES.
FR83601A FR1507252A (en) 1964-12-28 1966-11-15 Process for the separation of hydrofluoric gas from gas mixtures containing hydrochloric and hydrofluoric gases
GB5455366A GB1156560A (en) 1964-12-28 1966-12-06 Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride

Publications (1)

Publication Number Publication Date
GB1156560A true GB1156560A (en) 1969-07-02

Family

ID=27436939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5455366A Expired GB1156560A (en) 1964-12-28 1966-12-06 Separation of hydrogen fluoride from gas mixtures containing hydrogen chloride and hydrogen fluoride

Country Status (5)

Country Link
BE (1) BE689762A (en)
DE (1) DE1567504B1 (en)
FR (1) FR1507252A (en)
GB (1) GB1156560A (en)
NL (1) NL154431B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505671A1 (en) * 1981-05-12 1982-11-19 Zotov Boris Removing fluoro cpds. from waste gases e.g. from phosphoric acid mfr. - by absorption with a liq. stream contg. hydro:fluoric or hexa:fluoro:silicic acid
EP0563816A1 (en) * 1992-03-28 1993-10-06 Hoechst Aktiengesellschaft Process for the disposal of halons or halons containing fluorohydrocarbons or fluorochlorohydrocarbons
CN104812700A (en) * 2013-11-28 2015-07-29 阿克马法国公司 Hydrochloric acid purification process
CN107892275A (en) * 2017-10-31 2018-04-10 巨化集团技术中心 A kind of fluorine-containing hydrochloric acid defluorination method
CN109607478A (en) * 2018-12-25 2019-04-12 西安近代化学研究所 A kind of technique of step oxidation chlorination hydrogen and hydrogen fluoride gaseous mixture preparing chlorine gas
US10576417B2 (en) 2016-05-03 2020-03-03 Arkema France Hydrochloric acid purification process and plant

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940493A1 (en) * 1989-12-07 1991-06-13 Man Technologie Gmbh METHOD AND DEVICE FOR REMOVING FLUOR AND INORGANIC FLUORIDES FROM GASES
CN106378007A (en) * 2016-11-30 2017-02-08 南京睿宇物联网科技有限公司 Flue gas desulfurization and mercury removal device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB196258A (en) * 1922-04-13 1924-02-28 Ver Chemische & Metallurgische Process for the manufacture and production of chemically pure hydrochloric acid
GB822494A (en) * 1955-07-27 1959-10-28 Electro Chimie Metal Separation of hydrofluoric and hydrochloric acid gases
DE1024064B (en) * 1956-03-31 1958-02-13 Hoechst Ag Process for the processing of gases rich in hydrochloric acid resulting from chlorination reactions

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505671A1 (en) * 1981-05-12 1982-11-19 Zotov Boris Removing fluoro cpds. from waste gases e.g. from phosphoric acid mfr. - by absorption with a liq. stream contg. hydro:fluoric or hexa:fluoro:silicic acid
EP0563816A1 (en) * 1992-03-28 1993-10-06 Hoechst Aktiengesellschaft Process for the disposal of halons or halons containing fluorohydrocarbons or fluorochlorohydrocarbons
US5457267A (en) * 1992-03-28 1995-10-10 Hoechst Aktiengesellschaft Process for disposing of halons or halon-containing fluorocarbons or chlorofluorocarbons
CN104812700A (en) * 2013-11-28 2015-07-29 阿克马法国公司 Hydrochloric acid purification process
US9828314B2 (en) 2013-11-28 2017-11-28 Arkema France Hydrochloric acid purification process
CN104812700B (en) * 2013-11-28 2018-07-17 阿克马法国公司 The purification process of hydrochloric acid
US10576417B2 (en) 2016-05-03 2020-03-03 Arkema France Hydrochloric acid purification process and plant
CN107892275A (en) * 2017-10-31 2018-04-10 巨化集团技术中心 A kind of fluorine-containing hydrochloric acid defluorination method
CN109607478A (en) * 2018-12-25 2019-04-12 西安近代化学研究所 A kind of technique of step oxidation chlorination hydrogen and hydrogen fluoride gaseous mixture preparing chlorine gas
CN109607478B (en) * 2018-12-25 2022-02-22 西安近代化学研究所 Process for preparing chlorine by oxidizing hydrogen chloride and hydrogen fluoride mixed gas in one step

Also Published As

Publication number Publication date
NL6615605A (en) 1968-05-06
BE689762A (en) 1967-05-16
DE1567504B1 (en) 1970-04-02
NL154431B (en) 1977-09-15
FR1507252A (en) 1967-12-29

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