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US 4,367,211 AGranted
Plasma arc process for the reduction of sulfur dioxide to sulfur
AssigneePfizer Inc.
InventorWilliam G. Ray
Life of this patent
Estimating the term…
Abstract
A continuous process for the reduction of sulfur dioxide to sulfur in which a gas stream containing sulfur dioxide is contacted with a carbon source in the form of particulate coal at a temperature of at least 600.degree. C. in a plasma arc reaction zone generated by a rotating direct current arc.
Claims6
A continuous process for the reduction of sulfur dioxide to sulfur, which comprises contacting a gas stream containing sulfur dioxide with a carbon source in a plasma arc reaction zone at a temperature of at least about 600.degree. C.
Dependencies are inferred from the claim text.