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US 12,440,806 B2Granted
Process for eliminating hydrogen sulfide in an ammonium sulfate solution
AssigneeThioSolv, LLC
InventorsMichael J. Ray, Michael F. Ray, Matthew F. Ray
Life of this patent
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Abstract
A process for substantially removing hydrogen sulfide from an ammonium sulfate solution. The process involves maintaining the pH of the solution to a range that optimally removes entrained hydrogen sulfide. The hydrogen sulfide is then reacted with sulfites, bisulfites, or sulfur dioxide to form ammonium thiosulfate.
Claims13
A process for selectively eliminating hydrogen sulfide entrained in an aqueous ammonium sulfate solution, comprising:
- injecting a solution containing sulfite and/or bisulfite ions into the aqueous ammonium sulfate solution;
- mixing the two solutions thoroughly to produce an aqueous mixture comprising ammonium sulfate and ammonium thiosulfate,
- wherein the sulfite and/or bisulfite ions are present in the injected solution in a stoichiometric excess to the hydrogen sulfide.
Dependencies are inferred from the claim text.