Interfacial area and gas holdup in an agitated gas-liquid reactor under pressure

Dick Stegeman, Pieter J.C. Ket, Harmen A. van der Kolk, Jeroen W. Bolk, Peter A. Knop, K. Roel Westerterp

    Research output: Contribution to journalArticleAcademicpeer-review

    8 Citations (Scopus)
    15 Downloads (Pure)


    The chemical method has been used to measure gas-liquid interfacial areas in a mechanically agitated gas-liquid reactor at pressures up to 6.6 MPa. The 4.7 L vessel had an inner diameter of 15.6 cm with a dispersion height set equal to the diameter. The influence of pressure, agitation rate, gas velocity, and liquid viscosity on the interfacial areas and gas holdups was studied. Under normal conditions the interfacial area is not influenced by the system pressure. Only
    for extreme values of the gas inlet velocity interfacial areas increase with increasing pressure. The viscosity has been changed by adding ethylene glycol to the mixture. An increase in viscosity decreases the interfacial area. Pressure does not influence the gas holdup, while increasing viscosity has only a very small effect on the gas holdup. The data presented show that correlations determined at atmospheric conditions also hold for elevated pressures.
    Original languageEnglish
    Pages (from-to)59-71
    Number of pages13
    JournalIndustrial & engineering chemistry research
    Issue number1
    Publication statusPublished - 1995

    Cite this