DESULFURIZATION CHARACTERISTICS OF FLY ASH RECIRCULATION AND COMBUSTION IN THE CIRCULATING FLUIDIZED BED BOILER
The experiments of the fly ash recycle combustion using Guizhou anthracite were carried out in a bench scale circulating fluidized bed (CFB) combustor. Effects of some key operating parameters such as recycle ash to coal mass ratio (Ca to S molar ratio), temperature, reactivation mode of fly ash, circulation rate and fluidization velocity on the desulfurization efficiency were intensively investigated. It is shown that the limestone utilization efficiency could be improved about 30％ with the following operating conditions: the mass ratio of fly ash (reactivated by water and dried at 90℃) to coal was 0.45, the furnace temperature was 880℃, the water to ash mass ratio was 4.5％ (the water-to-calcium molar ratio was 0.55) and circulation rate was 18.
fly ash recycle combustion reactivation CFB desulfurization
S.F.Li M.X.Fang B.Yu Q.H.Wang Z.Y.Luo
State Key Laboratory of Clean Energy Utilization ，Zhejiang University ，Hangzhou, 310027 ，China
国际会议
第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)
西安
英文
941-946
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）