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:
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1992年第1期62-70,共9页
Chemical Reaction Engineering and Technology
关键词
外环流反应器
摩擦系数
循环液速
External reactor
Fricrion coefficient
Gas holdup
Circulating Liquid velocity
