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An Extended Algorithm of Flexibility Analysis in Chemical Engineering Processes

XU Qiang; CHEN Bingzhen; HE Xiaorong   

  1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-03-28 Published:2001-03-28
  • Contact: XU Qiang

化工过程系统的柔性分析扩展算法

徐强; 陈丙珍; 何小荣   

  1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

  • 通讯作者: 徐强

Abstract:

An extended algorithm of flexibility analysis with a local adjusting method for flexibility
region of chemical processes, which is based on the active constraint strategy, is
proposed, which fully exploits the flexibility region of the process system operation. The
hyperrectangular flexibility region determined by the extended algorithm is larger than
that calculated by the previous algorithms. The limitation of the proposed algorithm due to
imperfect convexity and its corresponding verification measure are also discussed. Both
numerical and actual chemical process examples are presented to demonstrate the
effectiveness of the new algorithm.

Key words: flexibility analysis, extended algorithm, active constraint strategy

摘要:

An extended algorithm of flexibility analysis with a local adjusting method for flexibility
region of chemical processes, which is based on the active constraint strategy, is
proposed, which fully exploits the flexibility region of the process system operation. The
hyperrectangular flexibility region determined by the extended algorithm is larger than
that calculated by the previous algorithms. The limitation of the proposed algorithm due to
imperfect convexity and its corresponding verification measure are also discussed. Both
numerical and actual chemical process examples are presented to demonstrate the
effectiveness of the new algorithm.

关键词: flexibility analysis;extended algorithm;active constraint strategy