Two-pass desulphurization and denitration apparatus used for boiler

Abstract

The invention relates to the field of desulphurization and denitration for a boiler, and concretely relates to a two-pass desulphurization and denitration apparatus used for the boiler. The two-pass desulphurization and denitration apparatus comprises a main reaction chamber, a flue gas-inlet assembly, a nozzle rotating shaft, a flue gas channel, a filter tank, a water separator, a sedimentation basin, a medicine adding pool, and a drug-delivery pump, the flue gas-inlet assembly is arranged at an upper end of the main reaction chamber, the flue gas channel is arranged in the main reaction chamber, and an upper end is connected with the flue gas-inlet assembly in a sealing mode, flue gas pass through the flue gas-inlet assembly and is injected to the flue gas channel in a spiral mode, the nozzle rotating shaft having a rotation spraying nozzle is arranged in the flue gas channel, a rotation direction of the rotation spraying nozzle is opposite to a spiral direction of the flue gas, a lower end of the main reaction chamber is connected with the filter tank in the sealing mode, water separators are arranged at two sides of the flue gas channel over the filter tank, a flue gas outlet is arranged at one side of the main reaction chamber, the sedimentation basin and the medicine adding pool are arranged beside the filter tank in order, the medicine adding pool is connected with the nozzle rotating shaft through a connecting pipe, and the drug-delivery pump is arranged at the connecting pipe. The two-pass desulphurization and denitration apparatus has a compact structure, and canincrease the desulphurization and denitration efficiency.

Description

technical field [0001] The invention relates to the field of boiler desulfurization and denitrification, in particular to a double-return desulfurization and denitrification device for boilers. Background technique [0002] my country's coal-fired boiler desulfurization technology began to be popularized and used around 2000, and denitrification technology began to be popularized and used around 2010. With the development of society and the national environmental protection department's higher and higher standards for atmospheric environmental governance, existing coal-fired boilers Advanced desulfurization and denitrification technologies are difficult to achieve ideal results. For example, the desulfurization efficiency of common wet desulfurization and dust collectors is only about 50%, and the desulfurization and denitrification equipment in the prior art occupies a large area and is very high. There are many requirements for the area and height, and the operating cost is ...

AI Technical Summary

Problems solved by technology

[0002] my country's coal-fired boiler desulfurization technology began to be popularized and used around 2000, and denitrification technology began to be popularized and used around 2010. With the development of society and the national environmental protection department's higher and higher standards for atmospheric environmental governance, existing coal-fired boilers Desulfurization and denitrification technologies are difficult to achieve ideal results. For example, the desulfurization efficiency of common wet desulfurization and dust collectors is only about 50%, and the desulfurization and denitrification equipment in the prior art occupies a large area and is very high. There are many requirements on the area and height, and the operating cost is high, which is not conducive to the promotion in the boiler industry

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