Catalysis of the reaction between hydrogen sulfide scavengers and hydrogen sulfide using tertiary amines
AssigneeCanadian Energy Services L.P.
InventorsJeffrey Soderberg, Hossein Jozani
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Abstract
While some triazines have low reactivity, a method and composition is described for improving their reactivity. The H2S scavenging composition and method utilizes a tertiary amine to catalyze the scavengers with slower kinetics to achieve improved results over traditional systems with the scavenger alone. A hydrogen sulfide scavenging composition comprises: a tertiary amine as a catalyst in at least one of (i) a triazine scavenger selected from the group consisting of: methyl amine, C2-C5 alkyl amine, dimethylaminopropylamine, isopropanolamine, aniline, cyclohexylamine, isobutanolamine and methoxypropylamine triazines/bisoxazolidines; or (ii) an aldehyde-based scavenger such as glyoxal.
Claims8
A hydrogen sulfide scavenging composition comprising:
- (a) a compound selected from the group consisting of:
- methyl amine triazine, C2-C5 alkyl amine triazine, dimethylaminopropylamine triazine, isopropanolamine triazine, aniline triazine, cyclohexylamine triazine, isobutanolamine triazine, methoxypropylamine triazine and isopropanolamine bisoxazolidine, and;
- (b) a tertiary amine, wherein the tertiary amine has a concentration of 0.05 to 8.0% by volume of the volume of the hydrogen sulfide scavenging composition.
A method for scavenging hydrogen sulfide from a hydrocarbon fluid comprising:
- contacting the hydrocarbon fluid with a hydrogen sulfide scavenging composition comprising:
- (a) a compound selected from the group consisting of:
- methyl amine triazine, C2-C5 alkyl amine triazine, dimethylaminopropylamine triazine, isopropanolamine triazine, aniline triazine, cyclohexylamine triazine, isobutanolamine triazine, methoxypropylamine triazine and isopropanolamine bisoxazolidine, and;
- (b) a tertiary amine, wherein the tertiary amine has a concentration of 0.05 to 8.0% by volume of the volume of the hydrogen sulfide scavenging composition.
Dependencies are inferred from the claim text.