Experimental investigation on gas-liquid mass transfer with fast chemical reaction in microchannel

被引：43
作者：
Zhu, Chunying [1 ]
Lu, Yutao [1 ]
Fu, Taotao [1 ]
Ma, Youguang [1 ]
Li, Huai Z. [2 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
[2] Univ Lorraine, CNRS, Lab React & Proc Engn, 1 Rue Grandville,BP 20451, F-54001 Nancy, France
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 114卷
基金：
中国国家自然科学基金;
关键词：
Microchannel; Mass transfer; Gas-liquid two-phase flow; Chemical absorption; TAYLOR FLOW; CO2; ABSORPTION; RECTANGULAR MICROCHANNEL; CIRCULAR MICROCHANNELS; SQUARE MICROCHANNELS; CARBON-DIOXIDE; SEGMENTED FLOW; BUBBLY FLOW; CAPILLARIES; DISSOLUTION;
D O I：
10.1016/j.ijheatmasstransfer.2017.06.054
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The gas-liquid two-phase flow and mass transfer with fast chemical reaction in a microchannel were investigated experimentally. Result showed that the bubble volume decreased exponentially with its movement along the channel in a quickly reactable absorbent. The volumetric mass transfer coefficient k(L)a increased with gas flow rate, while it was insensitive to liquid flow rate under experimental conditions, although the mass transfer coefficient k(L) increased with liquid flow rate. In slug-bubbly flow regime, the k(L) decreased when increasing gas flow rate, but inverse tendency was found for slug flow pattern. Both k(L) and k(L)a increased with the increase of absorbent concentration. A new correlation for predicting the volumetric mass transfer coefficients k(L)a was proposed by taking the enhancement factor E of chemical reaction into account. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：83 / 89
页数：7
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