Patent ID: 8658116
Filing Date: 2014-02-25
Classification: C01B,C10L,E21B,Y02E

Abstract:
1. A method of producing sulfur dioxide, comprising: providing a feed gas stream comprising hydrogen sulfide and hydrocarbons, wherein the feed gas stream comprises at least 5% by volume hydrogen sulfide; separating at least a portion of the feed gas stream into a hydrogen sulfide stream and a hydrocarbon gas stream, the hydrogen sulfide stream containing more hydrogen sulfide, by volume percent, than the feed gas stream, and the hydrocarbon gas stream containing less hydrogen sulfide, by volume percent, than the feed gas stream; providing an oxidant stream in an amount sufficient to provide at least 1.5 moles of molecular oxygen per 1 mole of hydrogen sulfide in the hydrogen sulfide stream; combusting essentially all of the hydrogen sulfide stream with at least a portion of the oxidant stream to generate thermal power and to produce a combustion stream comprising sulfur dioxide and steam; and separating at least a portion of the sulfur dioxide from the combustion stream.