Westvaco
Westvaco :
(1) A variation of the Claus process for removing hydrogen sulfide from gas streams, in which the sulfur dioxide is catalytically oxidized to sulfur trioxide over activated −−8−7−0°−C→ carbon at 75 to 150°C. The adsorbed sulfur trioxide is hydrated to sulfuric acid and then converted back to sulfur dioxide by reaction with the hydrogen sulfide at a higher temperature. (2) A process proposed for making chlorine by electrolyzing aqueous copper chloride
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