Patent ID: 8591846
Filing Date: 2013-11-26
Classification: B01D,C01B,Y02C,Y02P

Abstract:
1. A method for the processing of a carbon dioxide-rich acid gas in a Claus process, (a) an industrial gas to be freed from sulphur constituents and containing at least hydrogen sulphide and carbon dioxide as acid gas constituents is submitted to a first gas scrubbing using an acid gas-absorbing solvent which absorbs sulphur constituents more selectively than carbon dioxide, and (b) the laden solvent is fed to a regeneration unit for regeneration, and (c) the acid gas liberated in the regeneration and consisting of sulphur constituents and carbon dioxide (CO (d) the fraction of the highest content of sulphur constituents from step (c) is fed to the upstream Claus burner of the thermal reaction section of a Claus reactor, and the sulphur constituents contained being converted at least partially to form a sulphur dioxide (SO (e) the hot combustion gases are discharged into the reaction chamber downstream of the burner where they are mixed with at least one carbon dioxide-rich acid gas fraction from the regeneration unit.