An Intelligent Flue Gas Waste Heat Utilization and Flue Gas Pollutant Treatment System

Abstract

The invention provides a flue gas waste heat utilization system. The flue gas waste heat utilization system comprises a heat pipe, a flue gas pipeline and an air channel. The evaporating end of the heat pipe is arranged in the flue gas pipeline, the condensation end of the heat pipe is arranged in an evaporation channel, a fan is arranged on an inlet of the air channel, and the flue gas pipeline is provided with a temperature sensor and a flow sensor. The flue gas waste heat utilization system comprises a central controller, the central controller is connected with the fan, the temperature sensor and the flow sensor in a data mode, and the central controller automatically adjusts the frequency of the fan according to detected flue gas temperature T and flow V data. The waste heat utilization system with a novel structure can comprehensively control the frequency of the fan according to the flue gas temperature and flow, realize the intelligence of the system, and improve the utilization of waste heat.

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 using heat pipes. Background technique [0002] Heat pipe technology is a heat transfer element called "heat pipe" invented by George Grover of Los Alamos National Laboratory in the United States in 1963. It makes full use of the principle of heat conduction and phase change medium. The rapid heat transfer properties of the heat pipe quickly transfer the heat of the heating object to the heat source, 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...

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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