CHARACTERIZATION OF COMBUSTION AND EMISSION OF SEVERAL KINDS OF HERBACEOUS BIOMASS PELLETS IN A CIRCULATING FLUIDIZED BED COMBUSTOR
Characterizations of combustion and emission of four kinds of herbaceous biomass pellets were investigated in a 0.15 MWt circulating fluidized bed. Corn stalk, wheat stalk, cotton stalk and king grass, which are typical herbaceous biomass in China, were chosen for this study. Temperature profile, emission in flue gas and agglomeration were studied by changing the combustion temperature between 750℃ and 880℃. The combustion efficiencies are in the range from 97.4％ to 99.4％, which are relatively high due to the homogeneous temperature profiles and good circulating fluidization of bed material. Suitable combustion temperatures for the different herbaceous biomass are mainly depended on the emission and bed agglomeration. SO2 and HCl concentrations in flue gas are in direct proportion to the sulfur and chlorine contents of the herbaceous biomass. Agglomeration at the cyclone leg and the loop seal is the main reason for defluidization in the CFB combustor.
combustion biomass circulating fluidized bed agglomeration
S.Y.Li H.P.Teng W.H.Jiao L.L.Shang Q.G.Lu
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing,100190, 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
1095-1102
2009-05-18（万方平台首次上网日期，不代表论文的发表时间）