Xiao Guoxian Xu Delong Ji Ying Li Hui

(Xian University of Architeeture and Technology,Xian 710055)

Abstract

The theoratical research on thermal efficiency of powder preheater system under high solid/gas ratio is carried out. The results show that the bi-series preheater system is satisfactory under high solid/gas ratio. The effects of preheater stage and air-leakage coefficient on 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

DOI：10.13732/j.issn.1008-5548.1998.02.003