Eliminating Hydrogen Sulfide from Liquid Ammonia
AssigneeThioSolv, LLC
InventorsMark C. Anderson, Michael F. Ray
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Abstract
Processes for selectively eliminating hydrogen sulfide from liquid ammonia, either anhydrous or aqueous, are described herein. The processes generally include contacting a first liquid stream, anhydrous or aqueous, comprising ammonia and hydrogen sulfide, with a solution comprising sulfur dioxide to convert the hydrogen sulfide to thiosulfate.
Claims13
A process for selectively eliminating hydrogen sulfide from a liquid comprising:
- contacting, in a first contact zone, a first liquid stream comprising ammonia and hydrogen sulfide with a second stream comprising sulfur dioxide,
- the first contact zone producing a first contact zone liquid effluent comprising ammonia and ammonium thiosulfate.
A process for removing hydrogen sulfide from anhydrous ammonia by passing a first liquid stream comprising ammonia and hydrogen sulfide through a porous bed selected from the group consisting of metal sulfites, bisulfites and combinations thereof, wherein the hydrogen sulfide is converted to ammonium thiosulfate.
Dependencies are inferred from the claim text.