Intelligent cooperative control method of multiple contaminants in coal-fired industrial source flue gas

Abstract

The invention discloses an intelligent cooperative control method of multiple contaminants in coal-fired industrial source flue gas. The intelligent cooperative control method comprises the followingsteps: (1) enabling to-be-processed flue gas to enter into an SCR (Selective Catalytic Reduction) denitration system to remove NOx, wherein the denitration system adopts a honeycomb type catalyst, anda denitration reducing agent is fully mixed with the flue gas by adopting a spraying form; (2) enabling the gas processed in the step (1) to enter into an electric-bag integrated dust removal system,and improving charged quantity of particles by adopting a critical pulse power technology to purify smoke dust in the gas; (3) enabling the flue gas processed in the step (2) to enter into a wet process desulfurization system, performing desulfurization by adopting an improved lime/ limestone-gypsum process desulfurization absorbent; mixing the desulfurized absorbent sprayed and atomized by a flue gas ejector with the flue gas to carry out adsorption removal of heavy metal mercury. According to the intelligent cooperative control method of the multiple contaminants in the coal-fired industrial source flue gas disclosed by the invention, the removal efficiency of the multiple contaminants can be effectively improved, operation energy consumption is reduced, and a system error ratio is reduced; moreover, remote centralized operation, maintenance and fault diagnosis on the system can be achieved.

Description

technical field [0001] The invention relates to the field of multi-pollutant control of coal-burning industrial source flue gas, in particular to an intelligent collaborative control technology for multi-pollutants in industrial source flue gas. Background technique [0002] The coal combustion behavior of industrial sources such as coal-fired boilers will lead to the generation of a large amount of flue gas pollutants, mainly dust, SO 2 , NO x and Hg et al. Among them, sulfur dioxide and nitrogen oxides are the main pollutants that produce acid rain pollution. Dust, suspended particles, etc. cause frequent occurrence of urban smog; smoke contains heavy metal elements, mainly in the form of mercury, lead and their compounds, which greatly contributes to the Threats to human health and the ecological environment. [0003] In order to improve the serious air pollution caused by coal-fired flue gas, my country has put forward higher requirements for the concentration of flue...

AI Technical Summary

Problems solved by technology

However, at present, many multi-pollutant collaborative control technologies simply combine multiple single-pollutant control processes, which cannot be controlled collaboratively, which not only increases the complexity and failure rate of the system, but also cannot carry out online real-time monitoring of flue gas

The overall processing efficiency of the system is low and energy consumption is high, which cannot meet the requirements of the new environmental protection policy

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