Biogas in-situ desulfurization biological agent

Abstract

The invention discloses a biogas in-situ desulfurization biological agent. The biogas in-situ desulfurization biological agent comprises a desulfurizer, a microbial preparation, and an adjuvant; the desulfurizer is prepared from ferric salt consisting one or more selecting from normal salt, acid salt and basic salt; the microbial preparation is mixed strains of various microorganisms, and consistsof bacillus licheniformis, pseudomonas delbrueckii R-8, bacillus subtilis and microzyme; and the adjuvant is prepared by mixing agar, starch, reduced sugar, turfy soil and the like. According to thebiogas in-situ desulfurization biological agent, the desulfurizer and the microbial preparation are mixed for use, so that dry and wet desulfurization is achieved through the desulfurizer while further desulfurization is achieved through the microbial preparation; and thus, rapid desulfurization can be achieved through the two modes. In addition, the desulfurizer contains multiple sets of ferric salt so that the desulfurizer can adapt to environments in biogas digesters of different forms; and thus, desulfurization can be achieved.

Description

technical field [0001] The invention belongs to the technical field of desulfurization agents, and in particular relates to a biogas in-situ desulfurization biological preparation. Background technique [0002] Biogas desulfurizer is a new type of desulfurizer developed on the basis of comprehensive research on iron oxide desulfurizer and activated carbon desulfurizer. The shortcoming of relying too much on oxygen, its overall performance is obviously better than other commercially available dry desulfurizers. It can be widely used in industries such as biogas, coal chemical industry, petroleum and natural gas chemical industry, metallurgy and environmental protection, and can efficiently remove water gas. Natural gas, petroleum liquefied petroleum gas, coke oven gas and other chemical raw materials, flue gas, and hydrogen sulfide in industrial waste gas. Hydrogen sulfide is a highly toxic gas that seriously endangers the safety of humans and animals. Due to the popularity...

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Problems solved by technology

The ferric oxide method has a long history and mature technology, and is more suitable for desulfurization when the content of hydrogen sulfide in biogas is low (≤1g / L), and the gas quality is relatively dry, and the initial desulfurization efficiency can reach more than 95%. The desulfurization effect will rapidly decline in the later stage due to the reduction of the capacity; due to the limitation of the sulfur capacity, the service life is short, the replacement is frequent and inconvenient, and the operating cost is high. In actual use, many users find it troublesome and do not regenerate or replace the desulfurizer. It is useless, leading to the direct use of high-sulfur biogas. However, various desulfurizers on the market still have various problems

[0003] For example, the in-situ biogas desulfurizer disclosed by the authorized announcement number CN101705127A, although it realizes the in-situ biogas desulfurization by directly adding the in-situ biogas desulfurizer into the biogas fermentation device, has sufficient raw material sources, significantly improves the desulfurization efficiency, and is easy to operate. Convenience, saving desulfurization equipment costs, low operating costs, etc., but it does not solve the problem that the existing desulfurizers have a single function when used, cannot perform desulfurization according to the actual situation of the biogas digester, and the desulfurization method is single, and cannot quickly achieve desulfurization operational problems, for which we propose a biogas in situ desulfurization biological agent

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