Method and device for the desulphurisation of a gas stream containing hydrogen sulphide

US10941364B2 · kind B2 · utility

Assignee

• Siemens Energy Global GmbH & Co. KG · DE

Inventors

• Ralph Joh · Seligenstadt, DE
• Jenny Larfeldt · Finspång, SE
• Christoph Starke · Berlin, DE
• Rüdiger Schneider · Eppstein, DE

Key dates

• Filing date: Apr 16, 2018
• Grant date: Mar 9, 2021
• Expiry date: Apr 16, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2290/562
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for the desulphurisation of a gas stream containing hydrogen sulphide, in particular a combustion gas stream used for combustion in a gas turbine, wherein the gas stream is brought into contact with a scrubbing medium containing a catalyst to absorb the hydrogen sulphide, forming elementary sulphur; the catalyst is reduced on formation of the elementary sulphur; the scrubbing medium containing the reduced catalyst is fed to a regeneration stage in which the reduced catalyst is regenerated by oxidation with an oxygen-containing gas which is fed to the regeneration stage; the oxygen-containing gas is fed to the regeneration stage from a compression stage of the gas turbine; and the gas which is depleted of oxygen during regeneration of the catalyst is fed to at least one turbine stage fluidically connected downstream of the compression stage.