Stability and multiplicity approach to the design of heat-integrated PFR

Costin S. Bildea, Alexandre C. Dimian

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The nonlinear behavior of the heat-integrated plug-flow reactor, consisting of a feed-effluent heat exchanger (FEHE), furnace, adiabatic tubular reactor, and steam generator is studied, considering a first-order, irreversible, exothermic, adiabatic reaction. Bifurcation theory is used to analyze the relationships among design, reaction thermodynamics and kinetics; and state multiplicity and stability. Hysteresis, isola and boundary-limit varieties are computed, and the influence of the activation energy, reaction heat and FEHE efficiency on the multiplicity region is studied. The double- Hopf and double-zero bifurcation points divide parameter space in regions with different dynamic behavior. State multiplicity, isolated branches, and oscillatory behavior may occur for realistic values of model parameters. A design procedure is proposed to ensure a desired multiplicity pattern and a stable point of operation and to avoid high sensitivity. The procedure was applied to three reaction systems with different kinetic and thermodynamic characteristics.

Original languageEnglish
Pages (from-to)2703-2712
Number of pages10
JournalAICHE Journal
Volume44
Issue number12
Publication statusPublished - Dec 1998
Externally publishedYes

Fingerprint

Heat exchangers
Effluents
Hot Temperature
Thermodynamics
Kinetics
Steam generators
Hysteresis
Furnaces
Activation energy
Steam

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Bildea, C. S., & Dimian, A. C. (1998). Stability and multiplicity approach to the design of heat-integrated PFR. AICHE Journal, 44(12), 2703-2712.

Stability and multiplicity approach to the design of heat-integrated PFR. / Bildea, Costin S.; Dimian, Alexandre C.

In: AICHE Journal, Vol. 44, No. 12, 12.1998, p. 2703-2712.

Research output: Contribution to journalArticle

Bildea, CS & Dimian, AC 1998, 'Stability and multiplicity approach to the design of heat-integrated PFR', AICHE Journal, vol. 44, no. 12, pp. 2703-2712.
Bildea, Costin S. ; Dimian, Alexandre C. / Stability and multiplicity approach to the design of heat-integrated PFR. In: AICHE Journal. 1998 ; Vol. 44, No. 12. pp. 2703-2712.
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