循环流化床锅炉中灰平衡与灰循环倍率  

Ash Balance and Ash Circulating Ratio of CFB Boilers

作　　者：朱国桢[1] 

机构地区：[1]上海锅炉厂有限公司,上海市华宁路250号200245

出　　处：《锅炉技术》1999年第9期6-11,共6页Boiler Technology

摘　　要：灰循环倍率，不仅影响燃尽而且影响传热。它与飞灰份额、底灰份额的定义一样，都应以入炉灰量（含石灰石带入灰量）为基准。否则，无法计算烟气焓和烟气中飞欢浓度。必须指出，灰循环倍率不是人为选取的，它取决于分离器效率和飞灰份额。Ash circulating ratio influences heat transfer as well as combustion. Like definitions of fly ash ratio and bottom ash ratio, ash circulating ratio should be based on the amount of ash to furnace (including limestone). Only in this way can we calculate the enthalpy and fly ash density in the flue gas. The ash circulating ratio is not an arbitrary value and shall be set on basis of separator capture efficiency and fly ash ratio.

关 键 词：灰循环倍率 分离器效率 循环流化床锅炉 飞灰 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]