Gas-liquid two-phase flow in a square microchannel with chemical mass transfer: Flow pattern, void fraction and frictional pressure drop

被引：47

作者：

Yin, Yaran ^{[1
]}

Zhu, Chunying ^{[1
]}

Guo, Rongwei ^{[1
]}

Fu, Taotao ^{[1
]}

Ma, Youguang ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn, State Key Lab Chem Engn, Tianjin 300027, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2018年 / 127卷

关键词：

Microchannel; Gas-liquid two-phase flow; Chemical reaction; Flow pattern; Void fraction; Frictional pressure drop; CARBON-DIOXIDE; AQUEOUS-SOLUTIONS; CHANNEL DIAMETER; HEAT-TRANSFER; TAYLOR FLOW; T-JUNCTION; ABSORPTION; HYDRODYNAMICS; CO2; SEPARATION;

D O I：

10.1016/j.ijheatmasstransfer.2018.07.113

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The dynamics of the gas-liquid two-phase flow are of great significance for the heat and mass transfer performance in a microreactor. In this paper, the flow pattern, void fraction and frictional pressure drop of gas-liquid two-phase flow of CO2 and MEA/[Bmim][BF4] aqueous solution accompanied by the chemical reaction in a 400 mu m square microchannel were investigated experimentally by a high-speed camera and pressure sensor. Three kinds of flow regimes were observed: slug-bubbly flow, slug flow and slug-annular flow. The void fraction and frictional pressure drop in the slug flow regime were mainly investigated, and the applicability of models without consideration of the mass transfer proposed in the literature was assessed. Considering the effect of chemical absorption, two correlations were proposed with the Hatta number for predicting the two-phase void fraction and Chisholm parameter C, which showed good prediction performance. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：484 / 496

页数：13

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