Skid-mounted microorganism desulfurization and sulphur recovery apparatus

Abstract

The invention relates to a skid-mounted microorganism desulfurization and sulphur recovery apparatus, which comprises an absorption tower, a bioreactor, a settling tank, a pregnant solution tank, a barren solution tank, a clear water tank, a centrifuge, a sulphur recovery tank, a barren solution pump, a pregnant solution pump and other equipment, wherein the top portion of the absorption tower, the barren solution tank and the clear water tank are connected through the barren solution pump and pipelines, the bottom portion of the pregnant solution tank and the bottom portion of the bioreactor are connected through the pregnant solution pump and a pipeline, the top portion of the bioreactor and the settling tank are connected through a pipeline, the top portion of the settling tank and the barren solution tank are connected through a pipeline, the bottom portion of the settling tank and the centrifuge are connected through a pipeline, and the centrifuge, the sulphur recovery tank and the bioreactor are connected through pipelines. The skid-mounted microorganism desulfurization and sulphur recovery apparatus of the present invention has advantages of simple structure, easy operation, stable and safe operation, high automation degree, high desulfurization efficiency, and the like.

Description

technical field [0001] The invention relates to a skid-mounted microbial desulfurization and sulfur recovery device, which is mainly used for biogas desulfurization of large and medium-sized biogas projects, and can also be used for purification treatment of gaseous fluids containing hydrogen sulfide such as natural gas, process gas, and industrial waste gas. The recovery of elemental sulfur belongs to the field of environmental protection purification equipment. Background technique [0002] Bio-natural gas, also known as bio-methane, refers to the conversion of various organic biomass into methane-based biogas through anaerobic fermentation or gasification followed by refining / synthesis. The former, commonly referred to as biogas fermentation, is a mature technology; the latter (synthetic biogas) has not yet entered commercial development. Bio-natural gas has exactly the same components and properties as conventional natural gas, but the resource is never exhausted, which...

AI Technical Summary

Problems solved by technology

[0004] At present, microbial desulfurization devices have been applied in some biogas projects, and the use effect is good, but the structure is not perfect, which brings inconvenience to the use and daily maintenance, and is not conducive to the promotion and application of biogas projects

Chinese patent CN2870960Y discloses "a kind of biogas desulfurization equipment". The patented desulfurization tower is a biological trickling filter tower, and the H 2 SO 4 The pH value of the circulating fluid decreases rapidly, and the pH of the circulating fluid cannot be maintained, resulting in a decrease in the desulfurization rate

Chinese patent CN101703883A discloses "method and device for removing hydrogen sulfide from biogas". The main equipment of this patent is a bubble tray absorption oxidation device. Although it has the advantages of fast and efficient desulfurization, the bubble tower has a slow mass transfer rate. , low gas supply efficiency and high energy consumption, which lead to the restriction of the industrial application of bubble tower

Chinese patent CN201023019Y discloses "a biological desulfurization device for biogas", which is an integrated biological desulfurization device, but the air and biogas are mixed, which has great potential safety hazards; the dissolved oxygen content of the solution in the packing layer in the tower cannot be accurately controlled, Cause the accumulation of sulfate, affecting the desulfurization effect; the generated elemental sulfur gradually blocks the packing layer, increases the pressure drop of the system, and reduces the desulfurization rate

Chinese patent CN203090734U discloses "a two-stage biogas desulfurization device". This patent can eliminate biogas safety hazards, high desulfurization efficiency and stable operation. However, the bioreactor is an aeration type regeneration tower, and the dissolved oxygen distribution is not good. Uniformity, resulting in relatively high sulfate by-products, poor mass transfer effect, high energy consumption, and limited engineering applications

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