Industrial flue gas treatment method and system thereof

Abstract

The invention provides an industrial flue gas treatment method and a system thereof, which solve the problems of low efficiency and high cost during the denitration process in the prior art. The adopted technical scheme is as follows: flue gas is desulphurized and then denitrated at low temperature by special devices such as an optimized activated coke moving bed or an optimized activated coke tubular reactor or an optimized activated coke bag reactor, wherein, optimized activated coke is taken as a catalyst in the denitration process, thus realizing recycling and comprehensive utilization ofthe optimized activated coke. The invention can achieve low-temperature denitration, high denitration efficiency, small investment and low operating cost.

Description

technical field [0001] The invention relates to the field of industrial furnace flue gas purification, in particular to an improvement of a purification method and system in the sintering production process of a thermal power plant and a steel plant, specifically a method and system for industrial flue gas treatment. Background technique [0002] SO emissions from thermal power plants and steel plants during sintering production 2 and NO X is the main substance of air pollution, SO 2 and NO X It is one of the main reasons for the formation of acid rain, which seriously endangers human health and causes serious damage to the natural environment. Desulfurization and denitrification are the most important tasks for China to control coal-fired flue gas pollution and improve the atmospheric environment. [0003] At present, the domestic flue gas desulfurization methods include: wet desulfurization, semi-dry desulfurization, and dry desulfurization. Wet desulfurization mainly ...

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of this process are: 1) The selective catalytic reduction method has a large investment: the investment is 241.23 million yuan, of which the catalyst uses a titanium-based catalyst produced by Japan's Hitachi Zosen, the main component is Ti-V-W, and the price is 100.68 million yuan

2) High operating cost: the annual operating cost is as high as 48.71 million yuan, NO per ton X The removal cost is 5400 yuan

[0007] Other denitrification methods currently used in China not only require large investment, but also have low denitrification efficiency

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