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AssigneePaques Bio Systems B.V.
InventorsCees Jan Nico Buisman, Albert Joseph Hendrik Janssen, Robert Jan Van Bodegraven
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A method of removing hydrogen sulphide from a gas stream wherein the hydrogen sulphide is scrubbed from the gas phase by an aqueous solution, the hydrogen sulphide in the aqueous solution is biologically oxidized in a bioreactor to produce elemental sulphur, and the elemental sulphur is separated from the aqueous solution, characterized in that the gas stream to be treated is cooled to such a degree that at least sufficient water vapour condenses from the gas stream to compensate for the discharge stream for the purpose of removing salts. This means that no water need be supplied to the bioreactor. This method is suitable, in particular, for gas streams which contain hydrogen sulphide, the hydrogen sulphide having been obtained by catalytic conversion of sulphur compounds.
A method of removing hydrogen sulfide from a gas stream, comprising scrubbing a gas stream containing hydrogen sulfide with an aqueous solution, biologically oxidizing the hydrogen sulfide in the aqueous solution in a bioreactor to produce elemental sulfur, separating the elemental sulfur thus produced from the aqueous solution, and cooling the gas stream to such a degree that at least sufficient water vapor condenses from said gas stream to add water to a discharge stream from said bioreactor for the purpose of removing salts.
Dependencies are inferred from the claim text.