Mathematical modelling of membrane gas separation using the finite difference method

Pacific Science Review A: Natural Science and Engineering Pub Date : 2016-01-01 DOI:10.1016/j.psra.2016.07.001

Muhammad Ahsan, Arshad Hussain

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引用次数: 18

Abstract

Membrane gas separation has been recognized as the main technology that is used in chemical engineering for hydrogen recovery, air separation, natural gas sweetening, helium recovery, natural gas dehydration, and so on. Membrane-based gas separation processes have great potential for these industrial applications because of their environmental friendliness, energy efficiency and ease of scale up. Mathematical modelling of the membrane-based gas separation process can be useful to predict the performance of such separation processes. An improved mathematical model has been implemented in this research for the separation of a binary gas mixture using a membrane separator. The finite difference method (FDM) is applied to predict the membrane gas separation behaviour. The method is helpful as it involves the least effort and computational time because algebraic equations are used instead of differential equations. Different configurations, such as single stage and double stage, are used in this study. The results of the FDM simulation are compared with the simulation results of the model and the experimental data of several membrane systems.

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膜气分离的有限差分法数学建模

膜气体分离已被公认为化工领域的主要技术，用于氢气回收、空气分离、天然气脱硫、氦气回收、天然气脱水等。膜基气体分离工艺具有环保、节能、易于规模化等优点，具有很大的工业应用潜力。基于膜的气体分离过程的数学建模可以用于预测这种分离过程的性能。本文提出了一种改进的膜分离器分离二元气体混合物的数学模型。应用有限差分法(FDM)对膜气体分离行为进行了预测。该方法使用代数方程代替微分方程，省时省力。本研究采用了不同的配置，如单级和双级。将FDM仿真结果与模型仿真结果和几种膜系统的实验数据进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Pacific Science Review A: Natural Science and Engineering

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