660MW机组采用单列空气预热器的方案比较和注意事项

Comparison and Attentions on Single Air Preheater for 660MW Units

电站锅炉对空气预热器采用单列布置的案例越来越多,从空气预热器的结构、性能及经济性方面分析了单列三分仓和单列四分仓空气预热器的各自优劣性。同时,也对空气预热器单列布置进行了详细分析,特别是空气预热器的可靠性、抗堵灰及控制风温偏差对机组安全运行带来的影响提出了一系列的解决办法和措施。

There are more and more cases of single air preheater for the power plant boiler. The respective advantages and disadvantages single Tri-sector air preheater and single Quad- sector air preheater are analyzed with regard to structure, performance and economy. At the same time, a detailed analysis is made on the arrangement of single air preheater, especially on reliability, anti clogging and the impact on the units caused by controlling air temperature deviation, and the solutions and measures are put forward accordingly