Gas-liquid two-phase flow and mass transfer characteristics in an improved CO2 wet-wall column

被引：0

作者：

Lu S. ^{[1
,2
,3
]}

Liu M. ^{[1
,2
,3
]}

Yang F. ^{[1
,2
,3
]}

Zhang J. ^{[4
]}

Chen S. ^{[1
,2
,3
]}

Liu L. ^{[1
,2
,3
]}

Kang G. ^{[1
,2
,3
]}

Li Q. ^{[5
]}

机构：

[1] Institute of Carbon Neutralization, China University of Mining and Technology, Jiangsu, Xuzhou

[2] Jiangsu Key Laboratory of Coal-Based Greenhouse Gas Control and Utilization, China University of Mining and Technology, Jiangsu, Xuzhou

[3] School of Chemical Engineering, China University of Mining and Technology, Jiangsu, Xuzhou

[4] New Energy College, China University of Petroleum (East China), Shandong, Qingdao

[5] Sinopec Petroleum Engineering Design Company Limited, Shandong, Dongying

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 07期

关键词：

datum wet-wall tower; gas damper; improved wet-wall tower; liquid membrane; velocity field;

D O I：

10.16085/j.issn.1000-6613.2022-1372

中图分类号：

学科分类号：

摘要：

Fluent software is used to simulate gas-liquid two-phase flow field of benchmark and improved wet-wall tower by laminar flow model, VOF model and unsteady type. The influence of gas-liquid two-phase flow field on the mass transfer process was analyzed qualitatively. The results showed that with the increase of liquid inlet flow rate, the vortex motion of gas phase at the stable liquid film boundary was gradually enhanced, and the mixing degree of gas and liquid phase was strengthened, which was conducive to the improved gas-liquid mass transfer in the wet-wall column. In a certain range of gas inlet flow, with the increase of gas inlet flow, the vortex movement of liquid film interface was enhanced, and the mixing degree of gas-liquid two phases was strengthened, which was beneficial to the gas-liquid two mass transfer of the improved wet-wall tower. The gas phase inlet flow should not be too large, otherwise the liquid phase cannot flow down along the wet pilaster to form a stable liquid film, which was not conducive to mass transfer. The reduced diameter structure and gas baffle of the modified wet-wall tower were conducive to gas-liquid mixing and mass transfer. The mass transfer process of the improved wet-wall column occurs at the liquid film boundary. With the increase of liquid inlet flow, the liquid film thickness, the liquid film surface area, and the effective mass transfer area all increased, which was conducive to the transfer of gas and liquid. By comparing the gas-liquid two-phase flow field of the base wet-wall column with that of the improved wet-wall column, the mixing degree of gas-liquid two phases in the improved wet-wall column was strengthened, which was more conducive to mass transfer. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：3457 / 3467

页数：10

共 27 条

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