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US 12,637,629 B2Granted
Compositions and methods for scavenging hydrogen sulfide
AssigneeForemark Performance Chemicals
InventorsJames Begeal, Chris Williamson, Ali Yousef, Dallas Watson
Life of this patent
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Abstract
This invention provides compositions and methods that inhibit formation of alkenyl sulfide polymers and allow the hydrogen sulfide to be removed when scavenging hydrogen sulfide by reaction with aldehydes.
Claims22
A method for preparing a scavenging composition, the method comprising
- combining a) an aldehyde and/or an aldehyde releaser, b) ethylamine, and c) an alcohol to form the scavenging composition,
- wherein the amount of ethylamine used to form the scavenging composition is in the range of 0.2 molar to less than one molar equivalent in relation to the total amount of aldehyde provided by a), wherein the scavenging composition does not comprise ethanolamine, and wherein the aldehyde releaser is not formed by a reaction of ethanolamine with an aldehyde.
A method of forming a scavenging composition, the method comprising
- combining ingredients consisting essentially of a) an aldehyde and/or aldehyde releaser, b) ethylamine, and c) an alcohol;
- wherein the amount of ethylamine used to form the scavenging composition is in the range of 0.2 molar to less than one molar equivalent in relation to the total amount of aldehyde provided by a).
Dependencies are inferred from the claim text.