Co2 recovery using the sure process
AssigneeLinde Aktiengesellschaft
InventorStephen Rhys GRAVILLE
Life of this patent
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Abstract
The invention relates to a method for recovering sulphur from a sour gas containing hydrogen sulphide and carbon dioxide, comprising: oxidation of the sour gas, wherein a part of the hydrogen sulphide is oxidized to sulphur dioxide and water, reaction of the resulting sulphur dioxide with the residual hydrogen sulphide to elementary sulphur, and removal of elementary sulphur. According to the invention carbon dioxide and/or carbon dioxide generated by oxidation of the sour gas is compressed, and at least a part of the carbon dioxide is injected into an oil well. Furthermore, the invention relates to a plant suitable for performing the above method.
Claims21
A method for recovering sulphur from a sour gas containing hydrogen sulphide and carbon dioxide, comprising:
- subjecting said sour gas to oxidation, wherein a part of the hydrogen sulphide is oxidized to sulphur dioxide and water,
- reacting the resultant sulphur dioxide with residual hydrogen sulphide to produce elementary sulphur,
- removing elementary sulphur,
- compressing said carbon dioxide and/or carbon dioxide generated by said oxidation of said sour gas, and
- injecting at least a part of said carbon dioxide and/or said carbon dioxide generated by said oxidation of said sour gas into an oil well.
A plant for recovering sulphur from a sour gas containing hydrogen sulphide and carbon dioxide, comprising:
- at least one furnace (2) for oxidation of hydrogen sulphide to sulphur dioxide and water,
- a catalytic converter (21) connected to said at least one furnace (2) for formation of elementary sulphur from sulphur dioxide and hydrogen sulphide,
- means for extracting said elementary sulphur,
- a hydrogenation reactor (24) connected to said catalytic converter (21) for hydrogenation of sour gas,
- means for providing hydrogen for use in hydrogenation connected to said hydrogenation reactor,
- a first water removal unit (25) connected to the hydrogenation reactor (24) for removing of water,
- a compressor stage (26) connected to said first water removal unit (25) for compressing of carbon dioxide and/or carbon dioxide generated by oxidation of sour gas, and
- means for injecting said carbon dioxide and/or said carbon dioxide generated by oxidation of sour gas (12) in said at least one furnace (2) into an oil well, wherein said means for injecting is connected to said compressor stage (25).
Dependencies are inferred from the claim text.