660MW超超临界机组直流锅炉烟气高效利用设计优化

Design Optimization for High Efficiency Utilization of Flue Gas in Once-Through Boiler of 660MW Ultra Supercritical Unit

对中国神华能源股份有限公司胜利能源分公司2×660MW超超临界空冷机组锅炉烟气高效利用方案进行选型分析,对燃煤煤质、除尘器入口温度、前置换热器工作流程与布置方式进行分析说明,并针对磨煤机干燥出力不足问题提出解决方案。通过对机组经济性进行测算,认为该机组锅炉烟气利用采用空预器前置换热器方案可行。

In the process of the selection, analysis of flue gas waste heat utilization scheme for the 660 MW ultra supercritical air cooling unit boiler in China Shenhua Shengli Energy Branch Company. Through the analysis on coal quality of coal, the inlet temperature of the dust collector, the working process and arrangement of the pre-type heat exchanger, coal mill. and also puts forward the solution for the problem of low drying capacity of It is considered that the use of the pre-type heat exchanger for the high efficiency utiLzation of flue gas for the boiler in this unit is feasible.