Patent ID: 7833502
Filing Date: 2010-11-16
Classification: C01B,Y02E,Y02P,Y10S

Abstract:
1. A process for the production of hydrogen from hydrogen sulphide, comprising: hydrodesulphurizing a hydrocarbon cut of a refinery process by reaction with hydrogen in the presence of a catalyst to transform sulphur compounds contained therein into hydrogen sulphide; separating the stream subjected to the hydrodesulphuration to obtain a first stream consisting of the hydrocarbon cut substantially free of sulphur-based components and a second stream mainly containing the hydrogen sulphide formed and the non-reacted hydrogen, separating the second stream to obtain a stream consisting essentially of hydrogen sulphide and a stream comprising the non-reacted hydrogen; recycling the separated non-reacted hydrogen to the hydrodesulphuration; reacting the stream consisting essentially of the hydrogen sulphide, in a non-thermal plasma reactor to produce a product stream containing hydrogen, non-reacted hydrogen sulphide and sulphur; recovering the sulphur by removal of the sulfur from the product stream of the non-thermal reactor; recycling the product stream, from which the sulphur has been removed, to the hydrodesulphuration and/or to the separation of the second stream; wherein the process is integrated in a hydrocarbon refining process, and the hydrocarbon cut comprises sulphur compounds.