New hybrid method for mass exchange network optimization

Abdulfatah M. Emhamed, Zoltan Lelkes, Endre Rev, Tivadar Farkas, Zsolt Fonyo, Duncan M. Fraser

Research output: Contribution to journalArticle

7 Citations (Scopus)


A new hybrid optimization method is presented that is fairly robust and can be accomplished in an automatic way. The main idea is using integer cuts and bounds, based on driving force plot analysis, for the lean streams to decrease the possibility of being trapped in local optima. A new initial solution is constructed if the MINLP solution is infeasible; otherwise the earlier found best solution is used. In consequence, the MINLP model is modified in the iteration steps. The iteration is stopped when the total annual cost (TAC) in the solution reaches 1.1 · TACtarget.

Original languageEnglish
Pages (from-to)1688-1701
Number of pages14
JournalChemical Engineering Communications
Issue number12
Publication statusPublished - Dec 1 2007



  • Mass exchange networks
  • Optimization
  • Pinch technology

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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