文献类型：期刊文献

英文题名：Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals

作者：Xu, Xiao[1];Wang, Junjie[1];Yang, Qiang[1,2];Wang, Lei[1];Lu, Hao[2];Liu, Honglai[3];Wang, Hualin[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：28

期号：12

起止页码：2968

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20204709504404);WOS:【SCI-EXPANDED(收录号:WOS:000608805600002)】；

基金：The authors wish to express their sincere gratitude to the National Natural Science Foundation of China (51678238, 51722806, 51608325, 21908057), National Key R&D Program of China (2018YFC1802704, 2018YFC1801904), China Postdoctoral Science Foundation funded project (2018M641942), and Shanghai Sailing Program (19YF1411800) for financial support.

语种：英文

外文关键词：Gas-liquid reactor; Fractal dimension; Mass transfer; Bubble column

摘要：As the scale of residual oil treatment increases and cleaner production improves in China, slurry bubble column reactors face many challenges and opportunities for residual oil hydrogenation technology. The internals development is critical to adapt the long-term stable operation. In this paper, the volumetric mass transfer coefficient, gas holdup and bubble size in a gas-liquid up-flow column are studied with two kinds of internals. The gas holdup and volumetric mass transfer coefficient increase by 120% and 42% when the fractal dimension of bubbles increases from 0.56 to 2.56. respectively. The enhanced mass transfer processing may improve the coke suppression ability in the slurry reactor for residual oil treatment. The results can be useful for the exploration of reacting conditions, scale-up strategies, and oil adaptability. This work is valuable for the design of reactor systems and technological processes. (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.