Desulfuration and denitration device and method thereof for boiler exhaust gas

Abstract

The invention discloses a desulfuration and denitration method and device for boiler exhaust gas. The desulfuration and denitration device comprises a desulfuration and denitration main body, a water curtain dust removing device and an electrolysis box, wherein the desulfuration and denitration main body is provided with an exhaust port, and the exhaust port is provided with an air blower; the desulfuration and denitration device is characterized in that the desulfuration and denitration main body comprises an air inlet cavity and a purification cavity which are formed by separating the main body by a partition plate, and the purification cavity is internally provided with a combination structure of a plurality of air blocking plates and a multi-hole plate, and a step-shaped purification channel more than two levels is formed; the air inlet cavity is internally provided with a downward spiral air pipe which is internally provided with a plurality of plastic hollow balls, the lower end of the spiral air pipe is communicated with the air inlet cavity, and the other end of the spiral air pipe is communicated with the water curtain dust removing device through a straight air inlet pipe which is internally provided with a nozzle with an inward opening, and the nozzle is connected with the top of the electrolysis box through a connecting pipe; the electrolysis box is arranged on the lower part of the outer side of the purification cavity, and the bottom of the electrolysis box is communicated with the purification cavity. The boiler exhaust gas desulfuration and denitration method and the device have the advantages that the price is low, the service life is long, the operating cost is low, the purifying effect is good, and the boiler exhaust gas desulfuration and denitration device is suitable for the desulfuration and denitration of exhaust gas of a coal fired boiler.

Description

technical field [0001] The invention relates to a boiler exhaust gas desulfurization and denitrification method and a method thereof, which are mainly applied to the desulfurization and denitrification of coal-fired boiler exhaust gas. Background technique [0002] At present, with the continuous improvement of living standards, because the price of coal is cheap, more and more coal-fired boilers are used. Coal accounts for 70% of my country's energy consumption. The exhaust gas produced by coal-fired boilers pollutes the atmosphere more and more seriously. It is the pollution of sulfur dioxide and nitrogen oxides in the exhaust gas to the atmosphere. Most of the current coal-fired boilers use water curtain dedusting devices, which are not effective in desulfurization and denitrification of exhaust gas, especially for nitrogen oxides. There is an urgent need for a low price, long service life, low operating cost, desulfurization and denitrification Good device. Chinese Pate...

AI Technical Summary

Problems solved by technology

It is said that it washes the dust in the exhaust gas through atomized water, absorbs the water and sulfur dioxide in the exhaust gas, and then filters it through the filter to achieve the purpose of exhaust gas treatment; however, the exhaust gas purification of this design is not thorough enough, and the exhaust gas low reuse rate

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