Biogas purification and purification has a good prospect, and it also plays an important role in the application of biogas. Today, the small edition of biogas purification will introduce to you the current situation of the utilization of biogas purification and purification technology!
Biogas contains hydrogen sulfide, the molecular formula is H2S, hydrogen sulfide is flammable and dangerous chemicals, which can form explosive mixture when mixed with air. When exposed to open fire and high heat, it can cause combustion and explosion, and when hydrogen sulfide is exposed to water, it will produce strong corrosion characteristics on steel. Therefore, the core of the pretreatment process for biogas purification and refining is that It is the removal of hydrogen sulfide.
The concentration of hydrogen sulfide in biogas produced by different organic wastes under anaerobic condition is high or low, and the difference is large. The concentration of hydrogen sulfide in biogas produced from wastewater is relatively high in papermaking industry and fermentation industry due to the addition of sulfur-containing medium in the production process. For example, biogas in paper industry can reach as high as 10 000-35 000 ppm, starch industry biogas is generally about 10 000 ppm, and domestic waste landfill biogas is relatively low in hydrogen sulfide content, generally less than 1 000 ppm due to the relatively little sulfur medium involved in the production process.
In China, the production and processing technology of biogas and commercial operation system have gradually matured. Through independent innovation, introduction and digestion, advanced anaerobic digestion technology of high solid content organic wastes abroad has been absorbed. Among them, large-scale biogas with grain straw, livestock and poultry manure, and municipal organic waste as its treatment objects has been introduced. The project has also made breakthrough progress, so the corresponding biogas purification and purification technology has also been developed, forming a series of relatively mature technologies.
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