C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/329
C01B 17/06 (2006.01) C01B 17/02 (2006.01)
Patent
CA 1148329
ABSTRACT OF THE DISCLOSURE A method for reducing the hydrogen sulfide, hydrogen polysulfides and/or ash-forming compounds in molten sulfur is disclosed. The subject invention is directed at the addition of an effective amount of an agent selected from the class consisting of inorganic phosphorous compounds, urea and urea derivatives without the necessity for adding any oxidizing gas such as sulfur dioxide to the molten sulfur. Where the agent reduces the concentration of the ash-forming compounds in the molten sulfur, at least a portion of the ash-forming compounds present floats to the surface of the molten sulfur where they may be removed by conventional means.
383005
Ledford Thomas H.
Lerner Howard
Perez Raul E.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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