【摘要】 本文将气液两相在环流反应器上升管中流动的动量平衡关系引用到气液固三相流动,得到计算上升管中的三相含率和摩擦系数其关系式如下:含气率ε_G=(1.36u_Mu_LS^0.64（1-ε_G）^0.36μ_L^0.36)/(D^1.36ρ_LS^0.36（1-1.35C_V）^0.90g)+(ρ_Lu_LS²)/(ρ_LS（1-ε_G）²g) dε_G/dZ+（ρ_L）/ρ_LS dh/dZ+(ρ_LS-ρ_L)/ρ_LS含固率ε_S=（1-ε_G）C_V摩擦系数C_fM=O.68[(ρ_LSu_LSD（1-1.35C_V）².5)/（1-ε_G）μ_L]^-0.36冷模试验装置由上升管（内径40毫米）和下降管（内径120毫米）组成,总高约3.2米,系有机玻璃制成。物料为空气、水和石英砂。在常温常压下,以气体表观速度约0.2—1.0米/秒进行试验。实验值和计算值的比较结果是对平均含气率C_fM=O.68[(ρ_LSu_LSD（1-1.35C_V）².5)/（1-ε_G）μ_L]^-0.36的平均偏差均小于8%。更多还原

【Abstract】 The experiment is carried out in a installation composed of an upflowpipe（40 mm i.d.）and a downflow pipe（120 mm i.d.）with a totalheight of 3.2 m.The materials used are air,water and quartz sand.Superficial velocity is 0.2-1.0 m/s.The relationship of the momentum balance of gas-liquid flow in theupflow pipe of loop reactor is extended to that of gas-liquid-solid threephase flow.The following equations were obtained for calculating gas-liquid-solid holdup and friction coefficient.Gas holdup ε_G:ε_G=(1.36u_Mu_LS^0.64（1-ε_G）^0.36μ_L^0.36)/(D^1.36ρ_LS^0.36（1-1.35C_V）^0.90g)+(ρ_Lu_LS²)/(ρ_LS（1-ε_G）²g) dε_G/dZ+（ρ_L）/ρ_LS dh/dZ+(ρ_LS-ρ_L)/ρ_LSSolid holdup ε_S:ε_S=（1-ε_G）C_VFriction coefficient C_fM:C_fM=O.68[(ρ_LSu_LSD（1-1.35C_V）².5)/（1-ε_G）μ_L]^-0.36Agreement between calculated and measured value is fairly good.Average deviation of（?）is less than 8%更多还原