锅炉炉底加热对运行机组经济性的影响  

The influences of heating the boiler bottom water on the economic efficiency of operating unit

作　　者：张宝德[1] 王耀臣[1] 黄宝城 萧弘 盛伟[2] 

机构地区：[1]铁岭发电厂,辽宁铁岭112000 [2]沈阳电力高等专科学校,辽宁沈阳110036

出　　处：《沈阳工程学院学报（自然科学版）》2000年第4期8-10,共3页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：锅炉冷态启动前对炉水进行预热 ,可以减少投油时间 ,加快启动速度 ,提高机组的经济性。但由于要从运行机组处抽取蒸汽进行加热 ,因此将对运行机组的经济性产生影响。本文以 30 0MW机组为例 ,利用等效热降法分析了若达到炉底加热的要求 ,从何处抽取蒸汽对运行机组的经济性影响最小 。Before the boiler is started up from cold, the boiler water must be heated, so the time of using oil is reduced,the start up speed is fasted,the economic efficiency of unit is increased. Because the heating steam is drawed from the operating unit,the economic efficiency of operating unit must be influenced by that. Using the method of equivalent enthalpy drop in 300 MW unit,analyses which method is the best,when the demand of heating the water is satisfied

关 键 词：锅炉 炉水预热 汽源 

分 类 号：TM7-55[电气工程—电力系统及自动化]