化工学报2024，Vol.75Issue(3)：801-814,封2,15.DOI:10.11949/0438-1157.20231331
多孔板鼓泡塔流动与传质特性数值模拟
Numerical simulation of flow and mass transfer characteristics in porous plate bubbling column reactor
王娟 1李秀明 1邵炜涛 1丁续 1霍莹 2付连超 2白云宇 1李迪1
作者信息
- 1. 中国石油大学重质油全国重点实验室,北京 102249||中国石油大学过程流体过滤与分离技术北京市重点实验室,北京 102249
- 2. 中海油天津化工研究设计院有限公司,天津 300131
- 折叠
摘要
Abstract
A numerical simulation investigation was performed on the gas-liquid two-phase flow and gas-liquid mass transfer characteristics within a bubbling column reactor with various numbers of horizontally placed porous plates using the Euler-Euler dual-fluid model.Furthermore,the research investigated the impact of horizontal porous plates situated at different positions and various superficial gas velocities on gas holdup,bubble diameter,and gas-liquid mass transfer coefficient in the bubbling column reactor.The results indicate that the distribution of gas holdup was affected by the quantity and location of the porous plates.As the number of porous plates increased,the gas holdup in the upper part of the liquid phase of the bubbling column reactor increased;after installing the porous plate,the average gas holdup at the inner diameter of the reactor changed significantly,resulting in an M-shaped distribution;at various superficial gas velocities,the proportion of small bubbles with a diameter of 1-2 mm accounted for over 30%in the bubbling column reactor without the installation of a porous plate.Conversely,the proportion of small bubbles increased significantly after the installation of a porous plate.The gas-liquid mass transfer coefficient is relatively gentle in the central area(radial dimensionless between-0.5 and 0.5),with little fluctuation.Finally,the volume mass transfer coefficient obtained from the simulation calculation was compared with the calculated value of Akita's correlation equation.The calculation result was slightly higher.关键词
鼓泡塔/CFD-PBM模型/气泡直径/气含率/气液体积传质系数Key words
bubbling column reactor/CFD-PBM model/bubble diameter/gas holdup/gas-liquid volumetric mass transfer coefficient分类
化学化工引用本文复制引用
王娟,李秀明,邵炜涛,丁续,霍莹,付连超,白云宇,李迪..多孔板鼓泡塔流动与传质特性数值模拟[J].化工学报,2024,75(3):801-814,封2,15.
