RESEARCH ON FLOW NON-UNIFORMITY IN MAIN CIRCULATION LOOP OF A CFB BOILER WITH MULTIPLE CYCLONES
Maldistribution of gas-solid tow-phase flow field in circulating fluidized bed (CFB) can cause a series of problems, such as thermal deviation, wear of water walls, etc. In this study, a cold model CFB facility, which was scaled down from a commercial 300MWe CFB boiler with three cyclones placed in an array, was built up and a series of experiments were conducted the flow non-uniformity. The results showed that in CFB boiler with multiple cyclones, the distribution of bed material in the circulation loops is different and uncertain. The gas-solid two-phase flow in the furnace is unbiased, even the circulating rates in the circulation loops are different. The circulating rate in the middle loop is larger than that in the side loops. The difference is less than 10％.
CFB cyclone circulation loop uniformity mal-distribution
S.Yang H.R.Yang Q.Liu H.Zhang Y.X.Wu G.X.Yue Y.Z.Wang
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Departmentof Ther Department of Thermal Engineering, Chengde Petroleum College, Chengde, 067000, 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
341-344
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）