Biological Desulfurization System for Large Scale Biogas Plant: The major contaminant in biogas is H2S which is both poisonous and corrosive, and causes significant damage to piping, equipment and instrumentation. Biological desulfurization also known as biocatalytic desulfurization ( reffered to as BDS ). BDS is a process in which sulfur compounds (H2S, organic sulfur) are catalyzed by microorganisms or their enzymes, and the sulfur-containing organic compounds are converted into elementary sulfur and a trace amount of SO42- ions. A new type of desulfurization bacteria was used in the biological desulfurization process, and the desulfurization efficiency was higher than 99.5% (higher than the traditional desulfurization process ).
Biological desulphurization of biogas can be performed by using micro-organisms. Most of the sulphide oxidising micro-organisms belong to the family of Thiobacillus.
Working Principle : Biological desulfurization process can be divided into three units: (1) scrubbing tower (2) bio-regeneration reactor (3) sulfur separator.
As shown in the following flowchart, the alkaline bio-washing liquid is ejected from the top of the scrubber and contacted with the sulfur compounds (mainly H2S) gas entering from the bottom of the scrubber. During this process, the H2S will be efficiently absorbed. Then the rich liquid containing sulfide flows into the bio-regeneration reactor from the bottom of the scrubber, and the alkaline biological detergent will be regenerated by the biological treatment of the desulfurization microorganism. The elemental sulfur will be seperated from sulfur separator in form of particle precipitation. H2S is absorbed by biological scrubbing liquid in washing tower, the main chemical reaction: H2S+OH- = HS-+H2O; H2S+CO32- = HS-+HCO3- Biological Regenation Reactor: HS-+1/2O2 = S+OH- (with catalysts of microorganisms)
Characteristics: 1. High Efficiency: Hydrogen Sulfide removal rate is higher than 98.5%. 2. High Adaptation Range: Hydrogen Sulfide can be treated higher than 1.5% (15000ppm) 3. Lowest Cost: the lowest operating cost compared with other desulfurization technologies. 4. High Safety: multiple safety protection devices. 5. Unattended: the system is fully automated through on-line monitoring system. 6. Easy to Maintenance: A small amount of maintenance work (such as regular calibration of PH probe).
Application: Bio desulfurization is widely used in aquaculture, landfill, brewing, paper-making, citric acid, starch, pharmaceutical, food, petrochemical and other industries can produce biogas desulfurization, low operation cost, modular system equipment, a full range of services to support.
Company Profile: Mingshuo Environmental Technology Group Co., Ltd. was founded in 2004. The company is located at No.8 West Ring Road, Yeyuan Street, Linqu County, Weifang City, Shandong Province. The registered capital is 88 million yuan, covering an area of more than 100 mu. Mingshuo is positioned in the R&D, manufacturing and sales of high-end environmental protection complete sets of equipment, and is also a project system integration and operation service provider. The company's products are generally divided into two series: desulfurizer, desulfurization equipment and biogas equipment. Desulfurizer and desulfurization equipment are mainly used for the treatment of sulfur-containing gas in users such as biogas, natural gas, oil associated gas, shale gas, chemical fertilizer, coking, steel mills, petroleum refining and pharmaceutical industry; The biogas equipment is mainly used for the treatment of livestock manure, kitchen waste, organic waste, straw, sewage and other organic wastes, so as to realize high-value utilization and turn waste into wealth. Organic wastes are treated by biogas equipment to become three biogas, namely biogas, biogas residue and biogas slurry. Biogas can not only be used for power generation, heating, supplying households, but also for purifying natural gas. The biogas slurry can be used as organic fertilizer.
Company Qualification: The company has passed the'Trinity' management system certification of quality, environment, occupational health and safety, and has the professional construction qualification of environmental protection engineering, the construction safety production license, and the D1 and D2 pressure vessel qualification. Obtained 28 patents for inventions and utility models, and participated in the formulation of national standards for biogas desulfurization equipment. It is a high-tech enterprise in Shandong Province, Weifang Desulfurization and Denitrification Engineering Laboratory and Weifang Biogas Equipment Engineering Technology Research Center. It has the right to import independently, and has won the titles of "China Green Products", "Excellent Products of China Renewable Energy and Energy-saving Products Technology Expo" and "China Famous Brand". Sales Market: With reliable quality and excellent service, "Mingshuo" brand equipment sells well all over the country, and is exported to Asia, Africa, America, Europe and Oceania, and exported to more than 20 countries and regions such as Malaysia, Japan, Uzbekistan, Indonesia, Iran, Thailand and Maldives.
Partners: The Group has long-term cooperation with Sinopec, PetroChina, COFCO, CSIC, China Nengjian, Beijing Drainage Group, Yingfeng Environment, Huadian Group, Weichai Group, etc. It is a member unit of China Biogas Society, a member unit of china association of rural energy industry, China Biogas Research Institute, Process Research Institute of Chinese Academy of Sciences, Planning and Design Institute of Ministry of Agriculture, Tsinghua University, Shandong Chemical Planning and Design Institute, Agricultural University, Qingdao University of Science and Technology and other research institutes, and a cooperative unit with German national biogas expert Joe.
Company Development Philosophy: Environmental protection is the theme of development in the 21st century, and the treatment of organic waste and air pollution is very important. It is our unremitting pursuit to optimize and upgrade the quality of environmental protection equipment, ensure the long-term safe operation of environmental protection projects, make Mingshuo products spread all over the world, make resources circulate infinitely, create a cleaner world and create the greatest value for the society. With the concept of "cherishing the limited, creating the unlimited", we will build an international leading system service provider for environmental protection and new energy industry.
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