Biogas desulfurizer process and desulfurization method

Biogas desulfurizer process and desulfurization method Biogas desulfurizer use method - Biogas desulfurizer price, use of "biogas desulfurizer" method Hunan Hengyang biogas fermentation tank, desulfurization dehydration system, Lianyungang Longhai County zero emission fermenter type dumping machine, Turning machine, tumbling machine, red mud biogas tank biogas bag, Hunan Hengyang biogas project cost, rural biogas engineering equipment 156 9809 8065 Chen biogas desulfurizer, abstract: 3 methods commonly used in biogas desulfurizer 1, physical adsorption (activated carbon, Expensive, use less) 2, chemical reaction (Fe2O3 crude off, ZnO fine off) 3, biological treatment (using bacteria under aerobic conditions, H2S oxidation into elemental S) Biogas desulfurization method: according to the principle can be divided into dry method , wet and biological desulfurization methods. 1. Dry desulfurization Dry desulfurization is to fill a certain degree of desulfurization agent in the column desulfurization tower. The biogas passes through the desulfurizer from bottom to top, and H2S is removed to realize the desulfurization process. The method of desulfurization is further divided into an adsorption method and a catalytic conversion method. The adsorption method uses a solid having a strong adsorption capacity for sulfides to desulfurize, and the adsorbents mainly include iron oxide, activated carbon, zinc oxide, molecular sieves and the like. The catalytic conversion method uses a hydrodesulfurization catalyst to hydrogenolyze an organic sulfur compound contained in a hydrocarbon raw material into a hydrogen sulfide which is easily removed, and then remove it by other methods. The hydrodesulfurization catalyst is a combination of aluminum oxide cobalt molybdenum hydrogenation conversion zinc oxide, which can achieve the purpose of fine desulfurization. 2. Wet desulfurization method The temperature desulfurizer is a liquid, which is generally used for desulfurization of gases with high sulfur content and large amount of treatment. According to the different desulfurization mechanism, it is divided into chemical absorption method, physical absorption method, physical-chemical absorption method and wet oxidation method. The chemical absorption method is a commonly used wet desulfurization process, in which a weakly alkaline solvent is used as an absorbent, and the absorption process is accompanied by a chemical reaction. The absorbent after absorption of H2S is regenerated by increasing temperature and decompressing. The lye absorption method is one of the most commonly used methods for chemical absorption desulfurization, and sodium carbonate solution, lime milk or sodium hydroxide solution can be used as the absorbent. The physical absorption method utilizes an organic solvent to perform physical absorption and desulfurization under a certain pressure, and then depressurizes to release a sulfide gas, and the solvent is regenerated. The physical-chemical absorption method combines two types of solutions having physical absorption properties and chemical absorption properties, and has high desulfurization efficiency. Wet oxidation method generally only removes hydrogen sulfide, and can not or only remove a small amount of organic sulfur. The most commonly used wet oxidation method is the ADA method. 3. Biodesulfurization Biological desulfurization utilizes the conversion of sulfur by photoautotrophic microorganisms and chemical autotrophic microorganisms. The process by which different types of sulfur bacteria in natural waters metabolize sulfur. Different types of microorganisms are distributed in different regions due to their different metabolic characteristics. There is sufficient dissolved oxygen in the water surface layer, where the emblem organism can convert H2S into elemental sulfur in the aerobic state; in the anaerobic region of the bottom layer, the organic matter is corrupted to produce H2S. In the self-supporting area of ​​light energy, there is still enough light and H2S exists. The H2S-containing gas is directly introduced into the reactor, and both the absorption process and the oxidation process are completed in the reactor. Generally, the biological drip filter tower and the biological filter tower are used. In the desulfurization process of the biological trickling filter tower, in order to meet the microbial nutrient requirement and the cleaning requirement of the filter layer, the mixed liquid circulation system needs to be continuously operated, and the mixed liquid in the biological filter tower desulfurization process The supply system is running intermittently. In the two-stage desulfurization process, the H2S in the gas phase enters the desulfurization reactor through the absorption buckle, and the oxidation process of the sulfide is completed by the action of the autotrophic microorganism. Hongjing Environmental Technology Editor Chen Weixin Synchronizes QQ http://news.chinawj.com.cn Biogas desulfurizer process and desulfurization method

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