Fast, high capacity hydrogen sulfide scavengers

Details Fast, high capacity hydrogen sulfide scavengers Fast, high capacity hydrogen sulfide scavengers

C - Chemistry, Metallurgy

02

F

C02F 1/58 (2006.01) B01D 53/14 (2006.01) C02F 1/28 (2006.01) C10G 21/20 (2006.01) C10L 3/10 (2006.01) C07D 251/04 (2006.01)

Patent

CA 2661124

Selective, irreversible removal of hydrogen sulfide (H2S) and other sulfhydryl compounds from a gas stream, such as sour natural gas and sour hydrocarbon liquids is achieved with a scavenging agent having hydroxyalkyl functionality and alkylamine functionality. This scavenger possesses a higher capacity for H2S removal compared with a scavenger having only hydroxyalkyl functionality. The scavenging agent is made by reacting at least one alkanol- amine and at least one alkyl amine with an aldehyde, such as formaldehyde.

L'élimination sélective et irréversible de sulfure d'hydrogène (H2S) et autres composés sulfhydrylés d'un courant de gaz, tels qu'un gaz naturel corrosif et des liquides hydrocarbonés corrosifs, est obtenue au moyen d'un agent d'élimination présentant une fonctionnalité hydroxyalkyle et une fonctionnalité alkylamine. Ledit agent d'élimination possède une capacité d'élimination de H2S supérieure à celle d'un agent d'élimination ne présentant qu'une fonctionnalité hydroxyalkyle. Ledit agent d'élimination est obtenu par réaction d'au moins une alcanol amine et d'au moins une alkylamine avec un aldéhyde, tel que le formaldéhyde.

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