C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/212, 23/347
C10G 19/02 (2006.01) B01D 53/14 (2006.01) B01D 53/52 (2006.01) B01J 10/00 (2006.01) C10G 19/04 (2006.01) C10K 1/12 (2006.01)
Patent
CA 1141942
Abstract of the Disclosure A process for the removal of hydrogen sulphide from gases or liquid hydrocarbons, comprising contacting the gas or liquid hydrocarbon with an aqueous alkaline solution, preferably having a pH value of 8 to 10, comprising (a) an anthraquinone disulphonic acid or a water-, soluble sulphonamide thereof (b) a compound of a metal which can exist in at least two valency states and (c) a sequestering agent comprising a compound of formula I :- Image wherein R is an aliphatic residue containing from 1 to 12 carbon atoms and which is optionally substituted or interrupted by one or more hydroxy, or carboxyl groups; a carbonyl group, a phenyl group; or an aralkyl group containing 7 to 10 carbon atoms; and n is an integer of from 1 to 4; as well as salts, especially alkali metal and ammonium salts, and esters of compounds of formula I.
332128
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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