A multi-stage spray biogas biological desulfurization tower

Abstract

The invention discloses a multi-stage spray type biogas desulfurization tower, which comprises a tower body, an air outlet is arranged in the middle of the upper surface of the tower body, and a first water inlet is arranged at the upper end of one side of the outer circular surface of the tower body, A second water inlet is provided in the middle of one side of the outer circular surface of the tower, a liquid outlet is opened at the bottom of one side of the outer circular surface of the tower, and a liquid outlet is fixedly installed at the bottom of the outer circular surface of the tower close to the liquid outlet. Supporting feet, a first liquid inlet is provided at the upper end of the other side of the outer circular surface of the tower, and a second liquid inlet is arranged at the lower end of the outer circular surface of the tower near the first liquid inlet. By setting the anti-clogging gas homogenizer, the invention can make the biogas evenly rise and fully contact with the slurry spray, thereby improving the desulfurization efficiency, and can also prevent the sediment generated by the reaction from blocking the gas homogenization holes, thereby making it difficult for the washing liquid to return, and at the same time making it difficult for the biogas to Through the gas distribution plate, it is more inconvenient to use.

Description

technical field [0001] The invention relates to the technical field of energy-saving and environment-friendly equipment, in particular to a multi-stage spray biogas biological desulfurization tower. Background technique [0002] After anaerobic treatment of wastewater and solid waste containing organic matter, a large amount of biogas is produced. Due to the action of sulfate-reducing bacteria, a large amount of hydrogen sulfide is also produced. Due to the toxicity and strong corrosion of hydrogen sulfide, the comprehensive utilization of biogas is limited. Therefore, it is necessary to desulfurize the biogas. The earliest biogas desulfurization process is a solid chemical desulfurization process (dry desulfurization). The operation cost is high, large-scale application has been eliminated, and it is only matched with other desulfurization processes for subsequent fine desulfurization. With the development of biotechnology, the technology of using desulfurization microorgan...

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Problems solved by technology

[0003] In the process of realizing the present invention, the inventor found that at least the following problems in the prior art have not been solved: 1. In the traditional spray type biogas biological desulfurization technology, after the biogas enters from the air inlet of the desulfurization tower, it is directly sprayed for desulfurization At this time, the distribution of biogas in the desulfurization tower is not uniform, resulting in insufficient contact between the biogas and the slurry spray, thereby reducing the desulfurization efficiency. In the prior art, there is also a technology to evenly distribute the biogas by setting a gas uniform plate at the air inlet. However, after the biological washing liquid at the upper end reacts with the biogas, the washing liquid will enter the liquid collection tank at the bottom of the tower body through the gas uniform plate. After the washing liquid reacts with the biogas, it will generate precipitate elemental sulfur, which is easy to block the pores of the gas uniform plate. , making it difficult for the washing liquid to return, and at the same time making it difficult for biogas to pass through the gas uniform plate, which is inconvenient to use; 2. After a long time of use, the surface of the demister at the top of the desulfurization tower will bond with the sediment generated by the reaction, which will affect the defogging As a result, in the prior art, a special cleaning device is installed at the lower end of the demister. Although the cleaning of the demister is realized and the normal demisting effect of the demister is guaranteed, the structure of the desulfurization tower will be more complicated and the cost of desulfurization will be increased. At the same time, the volume of the desulfurization tower is increased, which is more inconvenient to use

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