多层百叶窗式挡板对三相流化床中固体颗粒轴向分布的影响

INFLUENCE OF MULTILAYER SHUTTER-LIKE BAFFLE ON AXIAL PROFILES OF SOLIDS CONCENTRATION AND PARTICLES SIZE IN THREE-PHASE FLUIDIZED BEDS

针对作者开发的带有导管与多层百叶窗式挡板特殊构型的三相流化床反应器 ,实验考察了百叶窗式挡板层数与挡板倾角构型参数、气体与浆液流量操作参数对床内固体颗粒轴向浓度分布及粒度分布的影响 实验结果表明 ,百叶窗式挡板的层数是影响固体颗粒轴向浓度分布及粒度分布的主要因素 ,当百叶窗层数多于 15层时 ,挡板上下方分区明显

The axial profiles of solids concentration and particles size were studied in a rectangular gas liquid solid three phase fluidized bed reactor in the presence of a special internal of multilayer shutter like baffle The influence of the number of shutter layers, angle of shutter to the horizontal, and gas and slurry volumetric flow rates on the axial profiles of solids concentration and particles size were experimentally investigated The results showed that the presence of the multilayer shutter like baffle promoted particles segregation significantly, producing two clearer layers of solids concentration and particles size above and beneath the internal if the number of baffle layers is more than 15, and that the gas and slurry flow rates had little effect on the axial profiles of solids concentration and particles size along the bed height The mechanism behind the effect of the internal on the axial solids profile was also discussed