Hydrogen sulfide abatement in molten sulfur
AssigneeBaker Hughes Incorporated
InventorsJohn A. Schield, Weldon J. Cappel, Jerry J. Weers, Glenn L. Roof
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Abstract
The present invention provides a method for inhibiting the evolution of H2S from sulfhydryl compounds in molten sulfur by using scavenging agents such as anhydrides and polymers thereof, conjugated ketones, carbonates, epoxides, monoesters and diesters of unsaturated dicarboxylic acids and polymers of these esters, and the like and mixtures thereof. In one embodiment, it is preferred that the scavenging agent is in liquid form at contact temperature with the molten sulfur. In another embodiment, the scavenging agent may be atomized into the vapor space over the molten sulfur to contact the sulfur with the agent.
Claims9
A method for inhibiting the evolution of hydrogen sulfide (H2S) from molten sulfur comprising contacting the molten sulfur contaminated with at least one sulfhydryl compound with an effective amount of a scavenging agent selected from the group consisting of anhydrides and polymers thereof, conjugated ketones, carbonates, monoesters and diesters of unsaturated dicarboxylic acids and polymers of these esters, where the scavenging agent is in liquid form at contact temperature.
A method for inhibiting the evolution of hydrogen sulfide (H2S) from molten sulfur comprising contacting the molten sulfur contaminated with at least one sulfhydryl compound with an amount of a scavenging agent selected from the group consisting of anhydrides and polymers thereof, conjugated ketones, carbonates, monoesters and diesters of unsaturated dicarboxylic acids and polymers of these esters where the scavenging agent is in liquid form at contact temperature, where the molar amount of scavenging agent relative to the sulfhydryl compound ranges from about 0.01 to 1 to about 100 to 1.
Dependencies are inferred from the claim text.