Inventors:
William G. Ray - Mountain Lakes NJ
John C. Arbo - New York NY
George E. Gryka - Southport CT
Assignee:
Pipco, Inc. - Southport CT
International Classification:
C01B 1705
Abstract:
The invention is a process wherein SO. sub. 2 is absorbed in a concentrated solution of potassium citrate and the solution is reacted with H. sub. 2 S at a temperature above the melting point of sulfur to form elemental sulfur. The reaction produces a solution lean in sulfur dioxide. SO. sub. 2, in the form of a rich solution or a gas, can be introduced into the lean solution in order to inhibit post-formation of sulfur. This introduction of SO. sub. 2 avoids a tendency for sulfur to form continually after the solution exits the reaction zone.