GB377667A - Process for the removal of cyanogen compounds from gases - Google Patents

Process for the removal of cyanogen compounds from gases

Info

Publication number
GB377667A
GB377667A GB2432/31A GB243231A GB377667A GB 377667 A GB377667 A GB 377667A GB 2432/31 A GB2432/31 A GB 2432/31A GB 243231 A GB243231 A GB 243231A GB 377667 A GB377667 A GB 377667A
Authority
GB
United Kingdom
Prior art keywords
cyanogen
gases
cyanogen compounds
sulphur
polysulphides
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
GB2432/31A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB377667A publication Critical patent/GB377667A/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
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
    • C10K1/123—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors containing alkali-, earth-alkali- or NH4 salts of inorganic acids derived from sulfur

Abstract

Cyanogen compounds are removed from gases by treatment with alkali (e.g. ammonium) polysulphide liquor containing polysulphides higher than the bisulphide, sufficient excess of said higher polysulphides being maintained to prevent the formation of monosulphide. This is effected by adding before or during the washing process, not less than one molecular equivalent each of sulphur and ammonia for each cyanogen group present in the gas in the form of dicyanogen or hydrocyanic acid. Complete removal of cyanogen compounds is effected even at temperatures above 30 DEG C., e.g. 60-70 DEG C. A wash liquor of the correct composition should, on acidification, give immediately an opaque suspension of sulphur.
GB2432/31A 1930-01-25 1931-01-24 Process for the removal of cyanogen compounds from gases Expired GB377667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE377667X 1930-01-25

Publications (1)

Publication Number Publication Date
GB377667A true GB377667A (en) 1932-07-28

Family

ID=6344450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2432/31A Expired GB377667A (en) 1930-01-25 1931-01-24 Process for the removal of cyanogen compounds from gases

Country Status (1)

Country Link
GB (1) GB377667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966876A (en) * 1973-12-18 1976-06-29 Woodall-Duckham, Limited Gas purification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966876A (en) * 1973-12-18 1976-06-29 Woodall-Duckham, Limited Gas purification

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