Application of the system of low temperature economizer with steamair heater on 300MW power unit

Abstract

Abstract:

Abstract:For a certain 300MW power unit, the designed system of low temperature economizer with steamair heater could realize the combining waste heat utilization of turbine and boiler, which recover waste heat of flue gas to heat condensation water of steam turbine and cold air at boiler side. After the system put into operation, the boiler thermal efficiency and the circulating heat efficiency are both improved at the meantime, and the full load power generation coal consumption is reduced to 3.02g/(kW·h). Besides, the system also could reduce the lowtemperature corrosion at the cold side and ash blocking of air preheater, control the pressure drop at flue gas side of air preheater, and improve the electrostatic precipitator efficiency. At the end of this paper, the countermeasures for existing problems in the system operation are proposed.

Key words: Keywords:low temperature economizer, steamair heater, air preheater, thermal efficiency, power generation coal consumption

QI Linhu1, HUANG Xinyuan2, LIU Hongying1. Application of the system of low temperature economizer with steamair heater on 300MW power unit[J]. Huadian Technology, 2016, 38(10): 22-24.

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Application of the system of low temperature economizer with steamair heater on 300MW power unit

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