Methodology for the Steady-State Operability Analysis of Plantwide Systems

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• 作者：Sivakumar Subramanian and Christos Georgakis
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2005
• 出版时间：September 28, 2005
• 年：2005
• 卷：44
• 期：20
• 页码：7770 - 7786
• 全文大小：419K
• 年卷期：v.44,no.20(September 28, 2005)
• ISSN：1520-5045

文摘

Many plants presently incorporate mass and heat integration schemes because they can offersubstantial material and energy savings. In designing such integrated processes, the designerruns the risk of designing plants with operational difficulties. It is prudent to carry out a detailedoperability analysis before finalizing a process design. In this article, we present an extensionto the operability framework of Vinson and Georgakis (in DYCOPS-5, 5th IFAC Symposium onDynamics and Control of Process Systems, Pergamon Press, 1998, and J. Process Control 2000,10, 185-194) to aid us in the analysis of plantwide systems. It is shown that the feasible operatingregion in the production-related variables, named here as achievable production output space(APOS), can be used to compare competing process designs. We also show that the same analysistool can be used to discriminate among several control structures for a given plant design. Theproposed methodology is demonstrated with a CSTR-stripper process and the well-knownTennessee Eastman process of Downs and Vogel (Comput. Chem. Eng. 1993, 17, 245-255).