Degassing and/or deashing molten sulfur

Details Degassing and/or deashing molten sulfur Degassing and/or deashing molten sulfur

C - Chemistry, Metallurgy

01

B

23/329

C01B 17/027 (2006.01) C01B 17/02 (2006.01)

Patent

CA 1168022

ABSTRACT OF THE DISCLOSURE A method for reducing the hydrogen sulfide and 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 dithionates, dithionites, thio- sulfates, bisulfides, bisulfites, and organo-phosphorous compounds without the addition of any oxidizing gas as for example sulfur dioxide. Where the agent reduces the con- centration of the ash-forming compounds in the molten sulfur,at least a portion of the ash-forming compound present floats to the surface of the molten sulfur where it may be removed by conventional means.

383035

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