回转式空气预热器漏风问题的分析与对策

大型电站锅炉广泛采用回转式空气预热器作为尾部换热设备。但是,漏风率过高是各电厂为提高经济效益需要解决的问题。通过分析分析影响漏风的因素,提出了采用双密封,安装漏风自动控制系统等降低漏风的对策。

Analysis and Measures for Air Leakage of Rotary Air Preheater

The rotary preheater is one of the most important heat-exchange equipments in some large-sized thermal power plants.High air leakage rate,which will do much harm to the power plant,is one stubborn problem that needs to be solved to improve economic benefits.The factors influencing air leakage are analyzed,and it is suggested to adopt double seal,install air leakage automatic control system to reduce the air leakage.