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Biogas biological desulfurization system

A biological desulfurization and biogas technology, applied in the field of biogas biological desulfurization system, can solve the lack of biogas biological desulfurization system and other problems, achieve high precipitation and separation efficiency, improve precipitation and separation efficiency, and high desulfurization efficiency

Pending Publication Date: 2019-01-01
山西资环科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors of the present invention have found that the existing biological desulfurization technology is mainly concentrated in the stage of laboratory simulation experiments, and lacks an efficient and economical biogas biological desulfurization system that can be applied in the field.

Method used

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  • Biogas biological desulfurization system
  • Biogas biological desulfurization system
  • Biogas biological desulfurization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a biogas biological desulfurization system, such as figure 1 As shown, the biogas desulfurization system in this embodiment includes: a chemical absorption tower 1 , a biological oxidation desulfurization tank 2 , a sedimentation tank 3 and a lye tank 4 . Specifically, the chemical absorption tower 1 is sequentially provided with a gas outlet 11, a lye distributor 14, a packing mechanism 15, an air inlet device 16, and a sulfur-containing lye collecting device 17 from top to bottom. Wherein, the biogas that enters the chemical absorption tower 1 by the air inlet device 16 passes through the packing mechanism 15 from bottom to top; The hydrogen sulfide in the biogas is absorbed to obtain sulfur-containing lye, the purified biogas is discharged from the gas outlet 11, and the sulfur-containing lye flows into the sulfur-containing lye collection device 17 under the action of gravity. The biological oxidation desulfurization pool 2 is connected wit...

Embodiment 2

[0060] Preferably, this embodiment provides a biogas desulfurization system, compared with the previous embodiment, such as figure 1 with figure 2 As shown, the present embodiment is further designed as follows:

[0061] The chemical absorption tower 1 in the present embodiment is also provided with a demister 13, which is used to remove foam and mist in the biogas after sulfur removal; the demister 13 is located below the gas outlet 11, and the demister 13 is located at The top of the lye distributor 14; wherein the demister 13 includes: a limiting cavity 131 and a wire mesh block 133; wherein the limiting cavity 131 is a cylindrical structure, and the bottom of the limiting cavity 131 is provided with A plurality of ventilation holes 1311, each ventilation hole 1311 is provided with a drainage wire 1312 extending downward; the top of the limiting cavity 131 is open. The wire mesh block 133 is filled in the cavity formed by the limiting cavity 131 (the wire mesh block 133 ...

Embodiment 3

[0064] Preferably, this embodiment provides a biogas desulfurization system, compared with the previous embodiment, such as figure 1 As shown, the present embodiment further designs the chemical absorption tower as follows:

[0065] The chemical absorption tower 1 in the present embodiment is also provided with a spray scrubber 12; wherein, the spray scrubber 12 is positioned above the demister 13 and below the gas outlet 11; the chemical absorption tower 1 is provided with a water outlet 19 The spray scrubber 12 is used to communicate with the water system 121 outside the chemical absorption tower 1, and utilizes high-pressure water to clean the chemical absorption tower 1 and its internal components, such as demisters, lye distributors, packing mechanisms, etc.

[0066] In this embodiment, a washing and spraying device is installed near the top of the chemical absorption tower. When impurities attached to the tower affect the operation effect, the washing device is turned on...

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Abstract

The invention provides a biogas biological desulfurization system. The biogas biological desulfurization system comprises a chemical absorption tower, a biological oxidation desulfurization pool, a settling pool, and an alkali liquor pool. The chemical absorption tower is internally and successively provided with an air outlet, an alkali liquor distributor, a filling mechanism, an air inlet deviceand a sulfur-containing alkali liquor collecting device from top to bottom. A biogas entering the chemical absorption tower from the air inlet device passes through the filling mechanism from bottomto top. Alkali liquor sprayed by the alkali liquor distributor enters the filling mechanism and generates reverse mass transfer with the biogas, hydrogen sulfide in the biogas is absorbed by the alkali liquor to obtain sulfur-containing alkali liquor, the purified biogas is discharged from the air outlet, and the sulfur-containing alkali liquor is flowed into the sulfur-containing alkali liquor collecting device. The biological oxidation desulfurization pool is capable of oxidizing sulfides in the sulfur-containing alkali liquor as elemental sulfur by using desulfurizing bacteria. The settlingpool is capable of performing solid-liquid separation on effluent in the biological oxidation desulfurization pool to obtain regenerated alkali liquor. The alkali liquor pool is used for providing the alkali liquor for the alkali liquor distributor. The regenerated alkali liquor is flowed into the alkali liquor pool for recycling. The provided biogas biological desulfurization system is efficientand economic.

Description

technical field [0001] The invention relates to the technical field of biogas desulfurization, in particular to a biogas biological desulfurization system. Background technique [0002] Biogas is a renewable high-grade clean energy, and its components include methane (60-70%), carbon dioxide (25-40%), and a small amount of hydrogen sulfide (rotten egg smell), ammonia, hydrogen, etc. Among them, hydrogen sulfide is formed in the process of microbial reduction of sulfur-containing compounds, which has a strong corrosive effect on combustion power equipment and metal pipes. harm. Therefore, in order to avoid hydrogen sulfide corrosion of compressors, gas storage tanks, engines, etc., and avoid hydrogen sulfide poisoning, biogas needs to be desulfurized before use. Moreover, the relevant standards stipulate that for centralized civil gas supply, the biogas content flow rate shall not exceed 20mg / m 3 , used for power generation and gas supply, the sulfur content is not more th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52B01D53/78B01D53/96C02F9/14C10L3/10C02F103/18C02F101/10
CPCB01D53/52B01D53/78B01D53/96C10L3/103C02F3/345C02F2103/18C02F2001/007C02F2101/101B01D2258/05Y02A50/20
Inventor 焦翔翔刘瑜史力川
Owner 山西资环科技股份有限公司
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