期刊
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
卷 144, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2019.107647
关键词
Bubble column reactor; Mass transfer; Computational fluid dynamics; Two-fluid model
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- TOTAL American Services, Inc.
A model for the evaluation of the mass transfer coefficient in bubble column reactors in the homogeneous regime is proposed. This approach combines three-dimensional two-phase flow simulations using OpenFOAM with mass transfer models in order to evaluate the average mass transfer coefficient in the reactor. The accuracy and limitations of the simulations are discussed based on comparisons with existing experimental data and correlations from the literature. Radial gas holdup and velocity profiles at different operating conditions are in reasonable agreement at low gas velocities. A sensitivity analysis was performed to determine the best interfacial force model among several possibilities. Schiller-Naumann's drag force model appeared to be the most appropriate, a swarm correction has a limited impact. Overall, the predicted global mass transfer coefficients fell within the range of values obtained from existing correlations in the literature. The level of accuracy of the proposed approach is, however, difficult to estimate as the predictions from the correlations in the literature varied over a 5-fold range. Despite the limitations of the proposed model (e.g., low gas velocities), the approach could be used to estimate the mass transfer in columns with internal packings, baffles or inserts, for which no correlation exists in the literature.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据