分析低压省煤器在回热系统中的连接方式，以及在现场中的安装位置，提出解决低压省煤器在运行时易出现低温腐蚀和积灰问题的措施；并以某电厂实例说明火电机组安装低压省煤器的经济性效益。%This essay analyzes the connection mode of the low-pressure economizer in the heat regenerative system as well as its installation sites on the boiler flue .Besides ,it also puts forward solutions to problems like low-temperature corrosion and ash deposition during the operation of the economizer .Its application in a power plant proves its eco-nomic efficiency for a thermal power unit .
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