Aqueous aldehyde solutions for trapping hydrogen sulfide

Details Aqueous aldehyde solutions for trapping hydrogen sulfide Aqueous aldehyde solutions for trapping hydrogen sulfide

C - Chemistry, Metallurgy

09

K

196/214, 252/30,

C09K 3/32 (2006.01) B01D 53/14 (2006.01) B01D 53/34 (2006.01) C10G 29/24 (2006.01) C10L 3/10 (2006.01)

Patent

CA 2023825

HOE B9/F 275 Abstract Aqueous aldehyde solutions for trapping hydrogen sulfide Aqueous aldehyde solutions for trapping hydrogen sulfide, containing 5 to 50% by weight of an aldehyde and addi- tionally 1 to 5% by weight, relative to the aldehyde solution, of a formulation comprising a) 10 to 80% by weight of a long-chain quarternary ammonium compound and 20 to 90% by weight of water or of a C1-C4 alcohol, b) 10 to 80% by weight of an ester of oxalkylated alkylalkylenediamines, which may be quaternized and 20 to 90% by weight of water or of a Cl-C4-alcohol, c) 10 to 80% by weight of a condensation product of a C12-C18-fatty acid with a polyethylene polyamine of the formula NH2- (C2H4-NH)x-C2H4-NH2 in which x is 1, 2 or 3 and the molar ratio of fatty acid to basic nitrogen in the polyethylene polyamine is 3 : 1 to 3 . 2, and 20 to 90% by weight of water or of a Cl-C4-alcohol, or d) 50 to 95% by weight of the fatty acid-polyethylene polyamine condensation product as defined in c) and 5 to 50% by weight of a nonionic or anionic surfact- ant.

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