China 1000m3 H Biological Scrubber for Biogas Sulfur-Containing Gas Purification

Biological Scrubber Bioreactor for Gas Purification and Desulfurization
Biological desulfurization (BDS) is a process in which a sulfur-containing compound (H2S, organic sulfur) is catalyzed by microorganisms or enzymes contained therein to convert it into elemental sulfur (S) and a trace amount of SO4²¯. With this biological desulfurization process, the efficiency can be higher than 99.5%.
Technically it belongs to separate biological desulfurization process, as it does not introduce exogenous gases such as air, oxygen into reaction, and the calorific value of biogas remains unchanged. It can be used for removal of H2S in biogas, natural gas and industrial waste gas generated by anaerobic digestion of domestic garbage, livestock manure, kitchen waste and organic sewage. The desulfurization product is a high-purity elemental sulfur (S), which can be used for industrial production.
Working principles:
The biological desulfurization process can be divided into three units: 1) absorption tower, 2) biological regeneration reactor for washing liquid, and 3) elemental sulfur separator.
As shown in flow chart below, the alkaline biological washing liquid is sprayed from the top of the washing tower and it will countercurrently contact with the sulfur-containing compound (primary H2S) source, which is entered from the bottom of washing tower. During this process, the H2S will be efficiently absorbed. Then the rich liquid containing sulfide flows from the bottom of the washing tower into the biological regeneration reactor. Through the treatments of microorganisms, the alkaline biological washing liquid will be regenerated in the biological regeneration reactor. As for elemental sulfur, it can be recovered through the elemental sulfur separator, by means of particle precipitation.
Absorption Tower: H2S+OH- = HS-+H2O
Biological Regeneration Reactor: microorganisms as catalyst, HS-+1/2O2 → S+OH-
Advantages:
High desulfurization efficiency 99.5%
Low operational costs due to regeneration of alkalinity in the bioreactor
Production of high grade elemental sulphur
Stable performance, easy to control
No oxygen or nitrogen is added, therefore the biogas quality is maintained
Low risk on clogging in scrubber, as no biological activity takes place there
Small land required
Suitable for large-scale, high sulfur-containing gas (100ppm~20000ppm)

ComparisonDry DesulfurizationWet DesulfurizationBiological DesulphurizationApplicationSmall and medium projects with gas less than 5000m³/day; Second high precision desulfurization after other methodsLarge Gas Plant up to 100,000 m^3/ day; High sulfur content around 5g/Nm³Large-scale, high sulfur-containing gas (100ppm~20000ppm)Power ConsumptionNoneHighModerateOperating CostModerate, the desulfurizer need to be changed periodicallyModerateLow cost on electricity billLand ScaleSmallFull set of equipment for gas desulfurization, regeneration, filtration and melting sulfur, in result, large land is required.ModerateOperation ManagementEasy to manage, reliable operation, dispense with staff on dutyNeed people on duty to control the operationAutomatic operation, simple maintenanceNoteRefueling at fixed period, one use one reserve, alternate operationMany equipment AdvantagesSimple structure, low investment, long lifetime, high precision of desulfurization (lower than 15ppm)

It can deal with large amount gas, and the system can run continuously by using PH value to keep the efficiency.

High desulfurization efficiency 99.5%, no second pollution, stable performance, suitable for large-scale, high sulfur-containing gas

Management System Certification: ISO9001:2008, ISO14001:2004, OHSAS18001:2007
Company Introduction:
Founded in 2004, Shandong Mingshuo New Energy Technology Co., Ltd. is located in Shandong Province, China. With a registered capital of CNY 30 million and an area of over 16 acres, Mingshuo is dedicated to the development, manufacturing, sales and service providing in environmental protection field.
We mainly specialize in organic waste treatment, biogas plant, desulfurization system, biogas purification, biogas utilization and organic fertilizer systems. As the production base of medium and large biogas equipments in China, our company is highly recommended by China Biogas Association, China Association of Rural Energy Industry, and China import and Export Commodity Website. Our company has passed the quality management system ISO 9001:2008, environment management system ISO 14001:2004 and occupational health & safety management system OHSAS 18001:2007 standards, with professional environmental engineering construction qualification, safety production license in construction field, and qualifications of Class D1, D2 pressure vessel. Moreover, we have obtained more than 30 patents and participated in the formulation of the national standards for biogas desulfurization equipment.
With the unique design, professional R & D team, and pursuit of better solution, we're able to offer the most suitable and customized professional technical consulting, technical supports and after-sale services for all types of customers according to their different requirements and situations. Our products are widely used in biogas, fertilizer, coking, natural gas, city gas, food, ceramics, and other industries.
Contact: Emma Luan