GB752460A - Process for the decomposition of phosgene - Google Patents

Process for the decomposition of phosgene

Info

Publication number
GB752460A
GB752460A GB1287/54A GB128754A GB752460A GB 752460 A GB752460 A GB 752460A GB 1287/54 A GB1287/54 A GB 1287/54A GB 128754 A GB128754 A GB 128754A GB 752460 A GB752460 A GB 752460A
Authority
GB
United Kingdom
Prior art keywords
phosgene
carbon
water
towers
hydrochloric
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
GB1287/54A
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 GB752460A publication Critical patent/GB752460A/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
    • C01B7/03—Preparation from chlorides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Phosgene is decomposed to hydrochloric and carbonic acids by intimately contacting it with activated carbon and water. One volume of carbon should be used for 40-70 volumes phosgene on an hourly throughput basis and 8 parts water for 1 part phosgene, so that the concentration of the hydrochloric acid produced does not exceed 10 per cent. Phosgene, which may be mixed with other waste gases, but from which organic solvent vapours have preferably been removed, may be passed up a tower filled with carbon down which water flows. Several towers may be used in series, or towers divided into carbon-filled compartments, each say 1 metre high, and each with separate water supply, may be used. The carbon can, if necessary, be reactivated by steam.
GB1287/54A 1953-01-20 1954-01-15 Process for the decomposition of phosgene Expired GB752460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE752460X 1953-01-20

Publications (1)

Publication Number Publication Date
GB752460A true GB752460A (en) 1956-07-11

Family

ID=6654283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1287/54A Expired GB752460A (en) 1953-01-20 1954-01-15 Process for the decomposition of phosgene

Country Status (1)

Country Link
GB (1) GB752460A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398516A1 (en) * 1977-07-30 1979-02-23 Hoechst Ag PHOSGENE DECOMPOSITION PROCESS
FR2398517A1 (en) * 1977-07-30 1979-02-23 Hoechst Ag PHOSGENE DECOMPOSITION PROCESS
CN111991998A (en) * 2020-08-27 2020-11-27 万华化学集团股份有限公司 Method for treating tail gas in isocyanate preparation process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398516A1 (en) * 1977-07-30 1979-02-23 Hoechst Ag PHOSGENE DECOMPOSITION PROCESS
FR2398517A1 (en) * 1977-07-30 1979-02-23 Hoechst Ag PHOSGENE DECOMPOSITION PROCESS
CN111991998A (en) * 2020-08-27 2020-11-27 万华化学集团股份有限公司 Method for treating tail gas in isocyanate preparation process

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