Method of removal of COS from propylene
AssigneeUnited States Steel Corporation
InventorsGeorge L. Brownell, Melba Collier, William E. Hall, Howard H. Morgan, Jr., Arthur R. Snyder
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Abstract
Carbonyl sulfide is removed from propylene by hydrolysis over a catalyst comprising platinum sulfide on alumina. Specifically, the propylene is passed through, successively, a C.sub.3 -splitter, a heater, the platinum sulfide catalyst bed, and a topping still where the resulting H.sub.2 S and CO.sub.2 are separated from the purified propylene.
Claims9
Method of removing carbonyl sulfide from propylene comprising passing the propylene containing carbonyl sulfide over a catalyst of platinum sulfide on alumina in the presence of water to hydrolyze the COS to H.sub.2 S and CO.sub.2.
Method of removing carbonyl sulfide from propylene comprising passing the propylene containing carbonyl sulfide over a PtS/alumina catalyst in the presence of water to hydrolyze the COS to H.sub.2 S and CO.sub.2, and separating the CO.sub.2 and H.sub.2 S from the major part of the propylene by multi-stage distillation to obtain an acid gas stream containing propylene, CO.sub.2 and H.sub.2 S.
Dependencies are inferred from the claim text.