Process for gas sweetening
AssigneeFoster Wheeler Energy Corporation
InventorsSuling Zhai, John Foster, Stephen Ward, Malcolm Harrison
Life of this patent
Estimating the term…
Abstract
A process for treating a gas stream comprising hydrogen sulphide, the process comprising the steps of: (i) mixing a first gas stream comprising hydrogen sulphide with a second stream comprising sulphur dioxide to produce a combined stream, whereby elemental sulphur is produced by a reaction between the hydrogen sulphide and the sulphur dioxide; (ii) removing elemental sulphur, and optionally water, from the combined stream; and (iii) oxidizing at least some of the elemental sulphur to form sulphur dioxide for use in the second stream, wherein, the reaction is conducted at a temperature of from 15 to 155° C. and a pressure of at least 3 MPa.
Claims14
A process for treating a gas stream comprising hydrogen sulphide, the process comprising the steps of:
- (i) mixing a first gas stream comprising hydrogen sulphide with a second stream comprising sulphur dioxide to produce a combined stream, whereby elemental sulphur is produced by a reaction between the hydrogen sulphide and the sulphur dioxide;
- wherein, the reaction is conducted at a temperature of from 15 to 155° C. and a pressure of at least 3 MPa;
- and
- wherein the reaction is conducted in the absence of a catalyst;
- (ii) removing elemental sulphur, and optionally water, from the combined stream;
- and
- (iii) oxidising at least some of the elemental sulphur to form sulphur dioxide for use in the second stream.
Dependencies are inferred from the claim text.