Biological desulfurizer and dry desulfurizer treating method for high concentration hydrogen sulfide gas

Abstract

The present invention relates to a bio-desulfurizer and dry desulfurizer treatment method in the waste gas purification system of digestive gas containing organic components of hydrogen sulfide, etc. It is mainly characterized by that the waste gas is passed through two-stage bio-desulfurizing device in the primary bio-desulfurizer and water for activation treatment, and is contacted with aerobic microbe adsorbed and staid on the surface of carrier so as to effectively oxidate and decompose high-concentration hydrogen sulfide gas to make above 80% of wet gas be reached to saturated state, then the above-mentioned waste gas is passed through a dust-fog separator to separate 99% of gas and water, then the waste gas containing organic components of dried hydrogen sulfide is floed into a dry desulfurizer with material for removing hydrogen sulfide to implement secondary desulfurization. The hydrogen sulfide component in the treated digestive gas can be up to above 90%, and its concentration purification treatment is below 50 (ppm), so that the methane gas obtained after the hydrogen sulfide is removed can be used as a fuel energy source, can be recovered and can be effectively utilized.

Description

technical field [0001] The invention belongs to the biological desulfurizer plus dry desulfurizer treatment method in the exhaust gas purification system of the high-concentration hydrogen sulfide and other organic components contained in the digested gas, especially relates to the high-temperature anaerobic fermentation process for municipal solid waste. Digested gas produced during dry digestion treatment, sludge digestion treatment, and excrement digestion treatment - biogas contains high concentration of hydrogen sulfide (H 2 S), carbon dioxide (CO 2 ), methane (CH 4 ) and other main organic components in the exhaust gas purification system, the biological desulfurizer plus dry desulfurizer treatment method. Background technique [0002] Using high-temperature anaerobic fermentation process to high-temperature dry digestion treatment of municipal solid waste, sludge digestion treatment, excrement and urine digestion process, the digested gas-the exhaust gas containing ...

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Problems solved by technology

[0003] The invention of the present invention is to solve the above-mentioned one-time and secondary biological desulfurization method-the digested gas in the biological desulfurizer-the waste gas of organic components such as high-concentration hydrogen sulfide contained in the biogas, and a large amount of treatment water is used in the treatment process. Excessive wastewater discharge may cause secondary pollution to the surrounding environment and increase operating costs. A series of technical problems are proposed, which can treat municipal solid waste, sludge, excrement and urine during the digestion process, and digest gas. - In the exhaust gas purification system containing hydrogen sulfide and other organic components in biogas, the gas that is effective and may be recovered as fuel energy - methane components can be used to reduce waste water discharge, reduce corrosion effects on equipment and materials and operating costs, and prevent The treatment method of biological desulfurizer plus dry desulfurizer for air pollution and prolonging the service life of equipment

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