INDUSTRIAL APPLICATION STUDY ON NEW-TYPE MIXED-FLOW FLUIDIZED BED BOTTOM ASH COOLER
(0) As a key auxiliary device of CFB boiler, the bottom ash cooler (BAC) has a direct influence on secure and economic operation of the boiler. The operating situation of domestic CFB power plant is complex and changeable with a bad coal-fired condition. The principle for designing BAC suitable for the bad coal-fired condition and high parameter CFB boilers was summarized in this paper. Meanwhile, a new-type mixed-flow fluidized bed bottom ash cooler was successfully designed on the basis of the comprehensive investigation on the existing BAC’s merits and drawbacks. Using coarse/fine slag separation technology and micro-bubbling fluidization are the significant characteristics of this new BAC. This paper also puts great emphasis on its industrial test in a 460t/h CFB boiler. The results indicate that it achieves significant separation of the coarse/fine slag, an obvious cooling effect, no slag block and coking phenomenon, and continuous stable operation. Figs 7, Tabs 4 and Refs 11.
circulating fluidized bed fluidized bed bottom ash cooler industrial application large-scale
B.Zeng X.F.Lu H.Z.Liu
School of Power Engineering, Chongqing University, Chongqing, 400044, 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
231-236
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）