带有冷凝微结构的间歇式膜蒸馏组件传热传质过程机理研究

doi:10.11930/j.issn.1004-9649.201909123

中国电力 ›› 2020, Vol. 53 ›› Issue (7): 176-183.DOI: 10.11930/j.issn.1004-9649.201909123

• 燃煤机组水分回收及处理关键技术专栏 • 上一篇下一篇

带有冷凝微结构的间歇式膜蒸馏组件传热传质过程机理研究

马韬, 杜小泽, 吴江波, 刘姝君

兰州理工大学能源与动力工程学院，甘肃兰州 730000

收稿日期:2019-09-20 修回日期:2020-03-05 发布日期:2020-07-05
作者简介:马韬(1990—)，男，硕士研究生，从事热膜耦合蒸发过程传热传质研究，E-mail: 2662645202@qq.com;杜小泽(1970—)，男，通信作者，博士，教授，从事强化传热与节能、太阳能及新能源发电、储能等研究，E-mail: duxz@ncepu.edu.cn
基金资助:
国家重点研发计划资助项目(燃煤发电机组水分高效低成本回收及处理关键技术研究与应用，2018YFB0604303-02)

Mechanism Study on Heat and Mass Transfer Process of Conductive Gap Membrane Distillation Module with Condensation Microstructure

MA Tao, DU Xiaoze, WU Jiangbo, LIU Shujun

School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730000, China

Received:2019-09-20 Revised:2020-03-05 Published:2020-07-05
Supported by:
This work is supported by National Research and Development Program of China (Research and Application Study on High Efficiency and Low Cost Key Technology of Coal-Fired Power Generating Units Water Recovery and Processing, No. 2018YFB0604303-02)

摘要/Abstract

摘要： 膜蒸馏技术因具有可低温操作和回收水质好等特点，在燃煤电厂脱硫废水的回收处理中极具应用前景。对一种带有冷凝微结构的新型间歇式膜蒸馏组件的传热传质进行了理论分析，在已有的理论基础上，考虑了膜热侧的传热传质以及膜中加入冷凝微结构后的传热情况，着重分析了微孔膜内的跨膜传质机理，以及在不同孔径及温度下的传质模型选择依据，并通过实验说明了温度及孔径对跨膜传质模型选择的影响，实验结果与理论分析基本吻合。

关键词: 冷凝微结构, 间歇式膜蒸馏, 膜组件, 传热传质机理, 数学模型

Abstract: Membrane distillation technology has exhibited great application prospects in the recovery and treatment of desulfurization wastewater from coal-fired power plants because of its applicability under low temperature conditions and high recycling water quality. In this paper, the heat and mass transfer of a new conductive gap membrane distillation (CGMD) with condensing microstructure is theoretically analyzed. Based on the present theories, the heat and mass transfer on the hot side of the membrane and the heat transfer after the condensing microstructure added into the gap are taken into consideration. Then the selection of mass transfer models with different pore sizes and temperatures for the mechanism of mass transfer across the membrane in microporous membranes has been emphatically analyzed. Finally, the influence of temperature and pore size on the selection of transmembrane mass transfer model is illustrated by corresponding experiments such that the experimental results are obtained and then verified to be mostly consistent with the theoretical analysis results.

Key words: condensation microstructure, conductive gap membrane distillation, membrane module, heat and mass transfer mechanism, mathematical model

马韬, 杜小泽, 吴江波, 刘姝君. 带有冷凝微结构的间歇式膜蒸馏组件传热传质过程机理研究[J]. 中国电力, 2020, 53(7): 176-183.

MA Tao, DU Xiaoze, WU Jiangbo, LIU Shujun. Mechanism Study on Heat and Mass Transfer Process of Conductive Gap Membrane Distillation Module with Condensation Microstructure[J]. Electric Power, 2020, 53(7): 176-183.

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带有冷凝微结构的间歇式膜蒸馏组件传热传质过程机理研究

Mechanism Study on Heat and Mass Transfer Process of Conductive Gap Membrane Distillation Module with Condensation Microstructure

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带有冷凝微结构的间歇式膜蒸馏组件传热传质过程机理研究

Mechanism Study on Heat and Mass Transfer Process of Conductive Gap Membrane Distillation Module with Condensation Microstructure

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