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首页> 外文期刊>Journal of Applied Polymer Science >Vacuum membrane distillation simulation of desalination using polypropylene hydrophobic microporous membrane
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Vacuum membrane distillation simulation of desalination using polypropylene hydrophobic microporous membrane

机译：聚丙烯疏水微孔膜脱盐的真空膜蒸馏模拟

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摘要

Numerical simulation is an effective method to get the optimal operating parameters in the chemical engineering process. In this work, the transport mechanism of vacuum membrane distillation (VMD) process was simulated and predicted by mathematical model, which was established based on the convective heat transfer coefficient, and 0.5M aqueous NaCl solution was concentrated with isotactic polypropylene (iPP) hydrophobic microporous membrane prepared via thermally induced phase separation (TIPS) in the VMD process. The as-presented mathematical model simulated the effects of different operating parameters on the VMD performances for aqueous NaCl solution, such as feed temperature, feed flow rate, absolute pressure of membrane permeate side, temperature coefficient, membrane thickness, and porosity. A comparison between experimental data and simulated data was also considered to verify the proposed mathematical model. Additionally, the salt rejection of aqueous NaCl solution production water in VMD was higher than 99.9%. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41632.
机译：数值模拟是在化工过程中获得最佳运行参数的有效方法。本文根据对流换热系数建立了数学模型，对数学模型进行了模拟和预测，并用等规聚丙烯（iPP）疏水微孔浓缩了0.5M NaCl水溶液。在VMD工艺中通过热诱导相分离（TIPS）制备的膜。提出的数学模型模拟了不同操作参数对NaCl水溶液的VMD性能的影响，例如进料温度，进料流速，膜渗透侧的绝对压力，温度系数，膜厚度和孔隙率。还考虑了实验数据与模拟数据之间的比较，以验证所提出的数学模型。另外，VMD中的NaCl水溶液生产用水的脱盐率高于99.9％。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41632。

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