循环流化床锅炉添加脱硫剂对热平衡的影响  

INFLUENCE OF ADDING DESULPHURIZOR UPON THE HEAT BALANCE IN A CFB BOILER

作　　者：王超[1] 程乐鸣[1] 邱坤赞[1] 周星龙[1] 许明磊[2] 程慧[2] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [2]浙江省电力设计院,浙江杭州310012

出　　处：《热力发电》2011年第3期72-77,共6页Thermal Power Generation

摘　　要：分析循环流化床(CFB)锅炉添加脱硫剂后对各项热损失的影响。分析表明,脱硫剂的加入对各项热损失的影响顺序如下:对脱硫热损失q7的影响>对排烟热损失q2的影响>对灰渣物理热损失q6的影响;锅炉热效率随脱硫深度的增加先升高后降低,石灰石直接逃逸率的增大则会削弱这种影响;脱硫对锅炉效率的影响程度与煤种及石灰石特性有着密切的关系。The influence of adding desulphurizor upon various heat losses in a CFB boiler has been analysed.It is clear from analysis that the sequence of severity due to each affected heat loss is as follows：the effect upon heat loss in desulphurization q7 the effect upon heat loss in discharged flue gas q2 the effect upon physical heat loss in ash and slag q6;the thermal efficiency of boiler is firstly enhancing and then reducing as the depth of desulphurization increases,this effect will be weakened as the direct escape rate of limestone increases;the affecting degree of desulphurization upon the boiler efficiency has close relationship with the coal sort and the limestone properties.

关 键 词：CFB锅炉 脱硫 热平衡 锅炉热效率 石灰石 逃逸率 

分 类 号：TK123[动力工程及工程热物理—工程热物理]