Patent ID: 8900544

Claim:
A method for removing sulphur from a fluid, comprising the steps of: providing a first fluid comprising a sulphur-containing compound; adsorbing the sulphur of said sulphur-containing compound onto an adsorbent; regenerating said adsorbent by oxidation of said adsorbed sulphur to sulphur dioxide thereby yielding an off-gas stream comprising sulphur dioxide; providing a second fluid comprising hydrogen sulphide; using said second fluid and said off-gas stream as reactants in a Claus process for producing elemental sulphur; wherein a part of hydrogen sulphide provided by said second fluid is oxidized to sulphur dioxide and water at a reaction temperature; wherein the residual hydrogen sulphide, the resulting sulphur oxide and said sulphur oxide provided by said off-gas stream are converted to elemental sulphur; wherein the oxygen required for said oxidation of said hydrogen sulphide provided by said second fluid is provided by an air stream; and wherein said off-gas stream dilutes said second fluid in said Claus process; characterized in that, said Claus process is enriched with oxygen for maintaining said reaction temperature equal to or above 1100° C.