Hydrodynamic model for gas-lift reactors

Avelino E Saez, Marco A. Márquez, George W. Roberts, Ruben G. Carbonell

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The hydrodynamic model of Young et al. (1991) for external-loop gas-lift reactors was modified to account for buoyancy forces in the gas phase. The revised model is based on macroscopic balances for the gas-liquid separator and external downcomer and spatially-averaged, 1-D mass and momentum balances in the riser. Using only the physical properties of the gas and liquid phases, the reactor dimensions, and the gas superfical velocity, the model predicts gas holdup profiles, gas and liquid velocity profiles, and pressure profiles in the riser for bubbly flow. Empirical correlations are used to represent frictional and drag effects, but there are no adjustable parameters in the model. The system of equations that must be solved to predict hydrodynamic behavior is simpler than that of Young et al. The sensitivity of the model to choice to drag coefficient correlation is analyzed. The model predictions match experimental data of previous works.

Original languageEnglish (US)
Pages (from-to)1413-1423
Number of pages11
JournalAICHE Journal
Volume44
Issue number6
StatePublished - Jun 1998
Externally publishedYes

Fingerprint

Gas lifts
Hydrodynamics
Gases
Liquids
Drag coefficient
Separators
Buoyancy
Drag
Momentum
Physical properties
Pressure

ASJC Scopus subject areas

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

Cite this

Saez, A. E., Márquez, M. A., Roberts, G. W., & Carbonell, R. G. (1998). Hydrodynamic model for gas-lift reactors. AICHE Journal, 44(6), 1413-1423.

Hydrodynamic model for gas-lift reactors. / Saez, Avelino E; Márquez, Marco A.; Roberts, George W.; Carbonell, Ruben G.

In: AICHE Journal, Vol. 44, No. 6, 06.1998, p. 1413-1423.

Research output: Contribution to journalArticle

Saez, AE, Márquez, MA, Roberts, GW & Carbonell, RG 1998, 'Hydrodynamic model for gas-lift reactors', AICHE Journal, vol. 44, no. 6, pp. 1413-1423.
Saez AE, Márquez MA, Roberts GW, Carbonell RG. Hydrodynamic model for gas-lift reactors. AICHE Journal. 1998 Jun;44(6):1413-1423.
Saez, Avelino E ; Márquez, Marco A. ; Roberts, George W. ; Carbonell, Ruben G. / Hydrodynamic model for gas-lift reactors. In: AICHE Journal. 1998 ; Vol. 44, No. 6. pp. 1413-1423.
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