应用化学2025，Vol.42Issue(4)：542-551,10.DOI:10.19894/j.issn.1000-0518.240273
脉冲错流筛板塔应用于含苯酚废水体系的传质特性
Mass Transfer Coefficient in a Pulsed Cross-Flow Sieve Plate Column for Phenol-Containing Wastewater System
摘要
Abstract
The hydraulic properties and mass transfer characteristics of a pulsed cross-flow sieve plate extraction column were investigated with phenol-containing wastewater extraction system,and the separation of phenol was realized.The results show that dispersed-phase holdup(xd)decreases gradually with the increase of pulse intensity(Af)and then increases,and xd reaches the minimum value at the Af of 0.0126 m/s,the Sauter mean(d32)decreases with the Af increasing,and the d32 decreases to about 1.3 mm at the Af of 0.0272 m/s.With the increase of two-phase flow rate,the xd increases,but the phase flowrate has no significant effect on the d32.As the Af increases,the extraction efficiency of phenol decreases first and then increases,which finally reaches 98.96%.The mass transfer coefficient was obtained using the axial diffusion model,and a prediction model was developed.The average relative error between experimental and calculated results was less than 10%,which provide a fundamental help for the equipment design and application.关键词
错流筛板萃取塔/脉冲/分散相持液量/液滴直径/传质系数Key words
Cross-flow sieve plate extraction column/Pulse/Dispersed-phase holdup/Droplet size/Mass transfer coefficient分类
化学化工引用本文复制引用
孙广垠,李亚洲,刘小燕,李龙祥,吕国华,谭博仁,王勇..脉冲错流筛板塔应用于含苯酚废水体系的传质特性[J].应用化学,2025,42(4):542-551,10.基金项目
国家自然科学基金(No.22178350)和国家自然科学基金重大研究计划(No.92262305)资助 Supported by the National Natural Science Foundation of China(No.22178350)and the Major Research Plan of the National Natural Science Foundation of China(No.92262305) （No.22178350）
