摘要：进行了粉体在高固气比下的多系列热效率的理论研究，指出双系列预热器系统是较为理想的高固气比预热器系统。针对预热器级数、漏风系数对双系列热效率的影响展开研究，其规律对新型预热器系统的开发具有指导意义。

关键词：预热器；热效率；高固气比

Abstract：The theoratical research on thermal efficiency of powder preheater sys

high solid/gas ratio is carried out. The results show that the bi-series preheater system is

satisfactory under high solid/gas ratio.ineeeaohed, its regular patterns are of guide to theon bi-series thermal efficiency are also researched, its regular patterns are of guide to the

development of new type of preheater system.

Keywords：preheater ; thermal efficiency ; high solid /gas ratio