Optimisation-based design method for membrane-assisted separation processes
Optimisation-based design method for membrane-assisted separation processes
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DOI：
10.1016/j.cep.2012.09.013
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发表时间：
2013-05-01
影响因子：
4.3
通讯作者：
Kreis, Peter
中科院分区：
文献类型：
--
作者：
Koch, Katharina;Sudhoff, Daniel;Kreis, Peter
本文提出了一种基于过程超结构优化概念的膜辅助分离过程设计方法，适用于共沸物的分离。所提出的方法的主要特点如下：（一）详细的速率为基础的建模的所有单元操作;（二）实验模型识别膜分离;（三）应用的进化算法。以丙酮、异丙醇和水三元混合物的渗透汽化-精馏复合过程为例，采用基于优化的设计方法，对渗透汽化-精馏复合过程进行了优化设计。所涉及的单元操作的详细的基于速率的模型在通用工艺模型中实施，并且必要的膜模型参数在实验室规模的装置中针对来自Sulzer Chemtech的亲水性聚合物膜PervapTM 2201 D实验性地确定。在确定了合适的工艺超结构后，同时确定了最佳混合渗透蒸发-蒸馏工艺所需的工艺配置、设备尺寸和操作条件。以提纯每吨丙酮的成本为优化标准。结果表明，该方法可以成功地应用于这个复杂的混合整数非线性优化问题。(C)2012 Elsevier B. V.保留所有权利。
This paper presents a design method for membrane-assisted separation processes based on the concept of process superstructure optimisation, which should be applied to the separation of azeotropic mixtures. The main features of the proposed method are as follows: (i) detailed rate-based modelling of all unit operations; (ii) experimental model identification for membrane separation; (iii) application of an evolutionary algorithm. This method allows the simultaneous determination of optimal process configuration, equipment design and operating conditions for membrane-assisted separation processes.A case study for the separation of a ternary mixture of acetone, isopropyl alcohol and water in a hybrid pervaporation-distillation process is presented using the optimisation-based design method. Detailed rate-based models for the unit operations involved were implemented in a generic process model and necessary membrane model parameters were determined experimentally in a laboratory-scale device for the hydrophilic polymeric membrane Pervap (TM) 2201D from Sulzer Chemtech. After the identification of an appropriate process superstructure, the process configuration, dimensions of equipment and operating conditions required for the optimal hybrid pervaporation-distillation process were determined simultaneously. The optimisation criterion was the cost for purifying one ton of acetone. The results show that the developed method can be applied successfully for this complex mixed-integer non-linear optimisation problem. (C) 2012 Elsevier B.V. All rights reserved.