三相外环流反应器的流动特性  

FLOW CHARACTERISTICS OF THREE-PHASE EXTERNAL-AIRLIFT LOOP REACTOR

作　　者：王焕君[1] 费黎明[1] 陈定旺[1] 吕德伟[1] 

机构地区：[1]浙江大学化工系,310027

出　　处：《化学反应工程与工艺》1992年第1期62-70,共9页Chemical Reaction Engineering and Technology

摘　　要：本文较详细地研究了三相外环流反应器上升管中的流动摩擦系数、气含率和循环流速等流动特性。分别用“漂流通量模型”和“能量耗散模型”描述了气含率和循环液速的变化情况。为进一步研究这类反应器的特性打下了基础。In a three-phase external-airlift loop reactor with d_T=0.05 m,flow characteristics,friction coefficient in the riser,gas holdup and circulating liquid velocity were investigated. A drift flux model and an energy dissipation model were set up and were used to describe the gas holdup in the riser and the circulating liquid velocity,respectively.The results were: V_g=u_g/ε_g=1.74u_M+0.23 u_L=27.7482(ε_L/(1-ε_g))[(u_g/ρ_(Ls))ln(1+2×10^(-4)ρ_(Ls))-0.46×10^(-4)ε_g]^(13) Empirical correlations for friction coefficient,gas holdup and circulating liquid velocity were obtained by fitting to the experimental data and are as follows:

关 键 词：外环流反应器 摩擦系数 循环液速 

分 类 号：TQ052.5[化学工程]