A new type of tube-panel water-tube heat exchanger integrated with electrostatic precipitator

Abstract

A novel tube panel type water tube heat exchanger integrated with an electrostatic precipitator consists of a plurality of rows of tube panels, wherein each row of tube panels consists of heat exchanger headers at two ends and a plurality of heat exchanging tube bundles which are connected with the heat exchanger headers at the two ends; tube ends of the heat exchanger heads at the two ends of each of the adjacent tube panels are connected to one another through large-diameter elbows, so that working media of the adjacent tube panels are connected to one another; and heat exchanging tube bundles of each tube panel are arranged in a flue structure in a middle section of an extension section of an inlet of the precipitator. The heat exchanger does not occupy the other effective space in front of the inlet of the electrostatic precipitator; the waste heat of the smoke can be reasonably used; and the specific resistance of the soot is reduced, so that the efficiency of the electrostatic precipitator is improved. The novel tube panel type water tube heat exchanger integrated with the electrostatic precipitator has the advantages that the structure is simple and compact, modular production and modular assembly can be realized, and field installation is quite convenient.

Description

technical field [0001] The invention relates to the technical field of waste heat utilization of coal-fired boiler flue gas, in particular to a novel tube-panel water-tube heat exchanger integrated with an electrostatic precipitator. Background technique [0002] Coal is the most important primary energy in China, and coal-fired power generation occupies the most important position in my country's power production. Therefore, improving the power generation efficiency of coal-fired units and reducing coal energy consumption is of great significance to my country's energy conservation and emission reduction. Flue gas waste heat loss is the most important item in the heat loss of coal-fired boilers, accounting for 4-8% of the input heat of large and medium-sized boilers, accounting for about 80% of the total heat loss of boilers. Generally, for every 12°C increase in the exhaust gas temperature of a coal-fired boiler, the heat loss of the exhaust gas increases by about 1%. [...

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