Flue gas waste heat utilization and intelligent processing system

Abstract

The invention provides a flue gas waste heat utilization system, which includes a heat pipe, a flue gas pipeline and an air channel. A PM10 dust detector is arranged at an inlet of the electrostatic precipitation section and used for detecting the PM10 concentration N1 on the detection inlet position, and the PM10 dust detector is connected with a central control unit through data; a flow sensor is arranged at the inlet of the electrostatic precipitation section and used for measuring the flue gas flow V entering the electrostatic precipitation section; and the central control unit automatically adjusts the intensity of an electric field according to the measured detected data of the PM10 concentration N1 and the flow V. The invention provides the waste heat utilization system with a new-type structure and an intelligent processing device thereof. The intensity of the electric field can be comprehensively controlled according to the PM10 concentration N1 and the flow V, intellectualization of the flue gas waste heat utilization system is achieved, and waste heat utilization is improved.

Description

technical field [0001] The invention relates to the fields of heat pipe waste heat recovery, flue gas dust removal and organic matter removal, in particular to a system for recovering flue gas waste heat by utilizing heat pipes. Background technique [0002] Heat pipe technology is a heat transfer element called "heat pipe" invented by George Grover of the Los Alamos National Laboratory in the United States in 1963. The property of rapid heat transfer, the heat of the heating object is quickly transferred to the outside of the heat source through the heat pipe, and its thermal conductivity exceeds that of any known metal. Compared with the most commonly used shell-and-tube heat exchanger in coal-fired flue gas waste heat recovery, the heat pipe heat exchanger has the advantages of high heat transfer efficiency, compact structure, small pressure loss, and is beneficial to control dew point corrosion. There is more potential in waste heat recovery and utilization. [0003] I...

AI Technical Summary

Problems solved by technology

[0004] Electrostatic precipitator + wet electrostatic precipitator technology is an important technical route to achieve ultra-low emission standards, but wet electrostatic precipitator operation and investment costs are high

Another technical route to achieve ultra-low emissions is to optimize the wet desulfurization device for efficient and coordinated removal of particulate matter. This technology needs to meet the dust concentration at the outlet of the front-end electrostatic precipitator ≤ 20mg / m 3 Even ≤10mg / m 3 , it is difficult to meet the current operating conditions of electrostatic precipitators in power plants

In addition, the emissions from coal-fired power plants will also produce a certain concentration of organic pollutants, such as alicyclic hydrocarbons, straight-chain hydrocarbons, benzene series, and polycyclic aromatic hydrocarbons. The removal of pollutants is an important research field for environmental safety.

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