Oxidation absorption equipment for integrated removal of multiple coal-fired flue gas pollutants

Abstract

The invention belongs to the related technical field of coal-fired flue gas pollutant treatment, and discloses oxidation absorption equipment for integrated removal of multiple pollutants in coal-fired flue gas. The equipment comprises an oxidation absorption tower main body, a liquid oxidant gasification device, a desulfurizing agent conveying device, a three-stage water pool, a desulfurizing slurry spraying assembly, a chimney and an induced draft fan, wherein the top end of the oxidation absorption tower main body is connected to the chimney through the induced draft fan, the bottom end ofthe oxidation absorption tower main body is connected to the three-stage water pool, the desulfurizing slurry spraying assembly is connected to the oxidation absorption tower main body and the three-stage water pool, the desulfurizing agent conveying device is connected to the three-stage water pool, the liquid oxidant gasification device is connected to one side of the oxidation absorption towermain body, and the oxidation absorption tower main body is used for making coal-fired gas sequentially react with a gas oxidant and a desulfurizing slurry. According to the present invention, the equipment has characteristics of improved automation and integration, high efficiency and small size.

Description

technical field [0001] The invention belongs to the technical field related to the treatment of coal-fired flue gas pollutants, and more specifically relates to an oxidation absorption device for integrated removal of multiple pollutants in coal-fired flue gas. Background technique [0002] In recent years, China's total consumption of coal, oil, natural gas, primary electricity and other energy has exceeded 4 billion tons of standard coal, of which coal accounts for more than 60% of the total energy consumption. Due to the complex chemical composition of coal, it includes not only major elements such as C, H, O, N and S, but also many other secondary and trace elements. Therefore, coal will produce a large amount of pollutants during the combustion process, such as sulfur dioxide (SO 2 ), nitrogen oxides (NO X ), heavy metals (such as Hg, Cd, Pb, As, Se, etc.), organic pollutants (such as VOCs, PAHs, etc.) and inhalable particulate matter (PM 10 ), etc., not only serious...

AI Technical Summary

Problems solved by technology

However, if different pollutants are treated separately, there are problems such as large equipment footprint, high system complexity, high equipment investment and operating costs, and there are mutual influences between different pollutant removal links.

[0004] With the continuous improvement of emission standards for various air pollutants, this will force coal-fired power stations, industrial boilers, kilns and other facilities to continuously increase the capacity of related equipment, and the investment and operating costs of pollutant control equipment will continue to increase.

Images