Air preheater is the main auxiliary equipment in the power plant. It is heat exchange equipment that uses the waste heat in the flue gas to heat the air required for combustion in the boiler. It “works” at the place with the lowest flue gas temperature in the boiler, recovers the heat in the flue gas, reduces the flue gas temperature at the same time, and improves the efficiency of the boiler. Besides these, because the air is preheated, the combustion process of fuel will become relatively more perfect, which will further improve the efficiency of the boiler.

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