Simultaneous Optimization of the Design and Operation of Batch Reactive Distillation Processes

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• 作者：Yu-Lung Kao ; Jeffrey D. Ward
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：January 13, 2016
• 年：2016
• 卷：55
• 期：1
• 页码：267-278
• 全文大小：589K
• ISSN：1520-5045

文摘

Simultaneous optimization of equipment design and process operation for batch reactive distillation processes is studied in this work. The minimal total annual cost problem is illustrated with two realistic chemical systems: hydrolysis of methyl lactate and esterification of formic acid. The effect of design and operating variables on total annual cost is investigated. The optimization results suggest that a reflux policy which maintains constant distillate composition can provide nearly optimal operation. The column should be designed with an adequate number of stages so that the batch capacity improvement by further increasing the number of stages is insignificant. Vapor boilup rate should be specified to make the best use of the available operating time, and the optimal vapor boilup rate is primarily affected by the catalyst loading. The insight into the effect of process design variables on design performance is used to develop an efficient algorithm for determining simultaneously the optimal column design and operating policy.