Biological desulfurization process for biogas

A biological desulfurization and biogas technology, applied in the petroleum industry, gas fuel, fuel, etc., can solve the problems of inability to achieve biogas desulfurization and removal effects, complex processes, etc., to ensure long-term operation, simplify desulfurization process, and high removal rate Effect
CN101602971AInactive Publication Date: 2009-12-16李旭源
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
李旭源
Publication Date
2009-12-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A biological desulfurization process for biogas comprises the following steps: contacting and reacting absorption solution which has a pH value of 7.5 to 8.0 and contains biological desulfurizing bacteria with the biogas first; aerating the reaction solution and keeping the dissolved oxygen concentration of the reaction solution between 0.50 and 1.25 mg / L; transforming sulfur element in the adsorption solution into monomer sulfur; and recycling the absorption solution which is obtained after the settlement separation of the monomer sulfur and maintains the dissolved oxygen concentration of 0.05 to 1.25 mg / L. The process avoids further desulfurization by a dry method or wet method and is simple and convenient to operate.
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Description

technical field

[0001] The invention relates to biogas biodesulfurization technology. Background technique

[0002] Biogas is biomass energy and belongs to renewable energy. Biogas contains H 2 S, under hot and humid conditions, it is very corrosive to metal pipes, gas storage cabinets and gas equipment. And when biogas is burned, H 2 S also converts to SO 2 and SO 3 , will not only pollute the environment, but also corrode the equipment, so the biogas needs to remove the H contained in it before use 2 S.

[0003] The current biogas desulfurization technology mainly has the following three methods:

[0004] (1) There is dry desulfurization: in the dry desulfurization tower, the desulfurizer iron oxide and H 2 Reaction of S to remove H from biogas 2 S. However, the desulfurizer will fail after repeated use, and the waste generated will cause secondary pollution.

[0005] (2) Wet desulfurization: In the wet scrubber, the H in the biogas is absorbed by the alkaline l...

Claims

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