Process optimization of a butane-butene alkylation plant

Petru Dragnea, Costin Sorin Bîldea

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents the optimization of a butane-butene alkylation unit, where the recycle flowrate is the objective function to be minimized. A simple Reactor-Separation-Recycle model of the plant is developed. Two control structures are suggested and analyzed, showing the influence of reactor volume and reaction temperature on conversion, selectivity and recycle flowrate. State multiplicity and unfeasible operating regions are revealed. The minimum recycle flowrate is obtained for a series of large reactors operated at the lowest economically achievable temperature, with the reactants fed to the first reactor from the series.

Original languageEnglish
Pages (from-to)71-84
Number of pages14
JournalUPB Scientific Bulletin, Series B: Chemistry and Materials Science
Issue number1
Publication statusPublished - Mar 3 2014


  • Alkylation
  • Process design
  • Process optimization

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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