Nonlinear approach to design of monolithic loop reactor for fischer-tropsch synthesis

Montree Lumluksanaphaiboon, Costin Sorin Bildea, Johan Grievink

Research output: Contribution to journalArticle

Abstract

The nonlinear behaviour of the monolithic loop reactor for Fischer-Tropsch synthesis is investigated. The model consists of non-stationary mass balances in gas, liquid and solid (catalyst) phases, together with energy balance. If the external heat-exchanger is small, the system exhibits multiple steady states and the moderte-conversion state is unstable. Due to occurrence of Hopf bifurcation, only part of the high- and low-conversion states are stable. State multiplicity disappears for a large heat exchanger. However, sustained oscillations occur around desired operating points. By calculating relevant bifurcation varieties, the reactor can be designed such that the reaction ignition/ extinction and the oscillatory behaviour are avoided, even when the design parameters are uncertain or the plant is subjected to disturbances. A control structure is proposed, as an alternative solution for achieving stable operation.

Original languageEnglish
Pages (from-to)769-774
Number of pages6
JournalComputer Aided Chemical Engineering
Volume20
Issue numberC
DOIs
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

Fischer-Tropsch synthesis
Heat exchangers
Hopf bifurcation
Bifurcation (mathematics)
Energy balance
Ignition
Gases
Catalysts
Liquids

Keywords

  • design
  • Fischer-Tropsch
  • Hopf bifurcations
  • monolithic reactor
  • multiplicity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Computer Science Applications

Cite this

Nonlinear approach to design of monolithic loop reactor for fischer-tropsch synthesis. / Lumluksanaphaiboon, Montree; Sorin Bildea, Costin; Grievink, Johan.

In: Computer Aided Chemical Engineering, Vol. 20, No. C, 2005, p. 769-774.

Research output: Contribution to journalArticle

Lumluksanaphaiboon, Montree ; Sorin Bildea, Costin ; Grievink, Johan. / Nonlinear approach to design of monolithic loop reactor for fischer-tropsch synthesis. In: Computer Aided Chemical Engineering. 2005 ; Vol. 20, No. C. pp. 769-774.
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