GB497331A - Recovery of hydrogen cyanide from gases - Google Patents

Recovery of hydrogen cyanide from gases

Info

Publication number
GB497331A
GB497331A GB16455/37A GB1645537A GB497331A GB 497331 A GB497331 A GB 497331A GB 16455/37 A GB16455/37 A GB 16455/37A GB 1645537 A GB1645537 A GB 1645537A GB 497331 A GB497331 A GB 497331A
Authority
GB
United Kingdom
Prior art keywords
iron
vapours
washing
distillation gases
gases
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
GB16455/37A
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.)
Dr C Otto and Co GmbH
Directie van de Staatsmijnen in Limburg
Original Assignee
Dr C Otto and Co GmbH
Directie van de Staatsmijnen in Limburg
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 Dr C Otto and Co GmbH, Directie van de Staatsmijnen in Limburg filed Critical Dr C Otto and Co GmbH
Publication of GB497331A publication Critical patent/GB497331A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/001—Purifying combustible gases containing carbon monoxide working-up the condensates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/08—Simple or complex cyanides of metals
    • C01C3/12—Simple or complex iron cyanides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

Hydrogen cyanide is recovered in the form of alkali ferrocyanides from coal distillation gases by expelling vapours from the ammoniacal liquor recovered from the coal distillation gases, and washing these vapours with a solution of an alkali metal carbonate or hydroxide in the presence of iron or an iron salt. The liquors obtained by cooling distillation gases or by washing them with water may be so treated. The iron may be in the form of iron dust or iron filings. Potassium, sodium or ammonium ferrocyanide may be so obtained and in the last case there is usually sufficient ammonia present in the vapours. The washing process may be conducted at elevated temperature, e.g. 95 DEG C., and the vapours may be preheated. Apparatus having cast iron walls may be used. The recovery of solid alkali cyanide from the resulting liquors may be assisted by the addition of alkali metal hydroxide and/or carbonate a liquid for re-use in the process being thereby obtained. Specification 497,330 is referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 497,330. This subject-matter does not appear in the Specification as accepted.
GB16455/37A 1936-09-30 1937-06-14 Recovery of hydrogen cyanide from gases Expired GB497331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE497331X 1936-09-30

Publications (1)

Publication Number Publication Date
GB497331A true GB497331A (en) 1938-12-14

Family

ID=6545164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16455/37A Expired GB497331A (en) 1936-09-30 1937-06-14 Recovery of hydrogen cyanide from gases

Country Status (1)

Country Link
GB (1) GB497331A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972912A (en) * 1957-11-22 1961-02-28 Gleason Works Gear cutting machine with work spindle positioning means
CN113213422A (en) * 2021-05-31 2021-08-06 杨皓 Improved process for producing ammonia synthesis gas from sodium cyanide tail gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972912A (en) * 1957-11-22 1961-02-28 Gleason Works Gear cutting machine with work spindle positioning means
CN113213422A (en) * 2021-05-31 2021-08-06 杨皓 Improved process for producing ammonia synthesis gas from sodium cyanide tail gas

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