Thermal effects in gas absorption

Authors

  • Surjit L. Verma,

    1. Stevens Institute of Technology, Department of Chemistry and Chemical Engineering, Hoboken, New Jersey 07030
    Current affiliation:
    1. C. F. Braun and Company, Murray Hill, New Jersey
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  • George B. DeLancey

    Corresponding author
    1. Stevens Institute of Technology, Department of Chemistry and Chemical Engineering, Hoboken, New Jersey 07030
    • Stevens Institute of Technology, Department of Chemistry and Chemical Engineering, Hoboken, New Jersey 07030
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Abstract

The transformation of the energy equation from the mass average to the volume average reference frame exposes a pseudo Dufour effect. The theoretical model for absorption into a stagnant liquid including this effect, the heat of absorption, variable density, an interfacial velocity, and an arbitrary equilibrium condition at the interface is able to predict experimental data over a wide range of conditions. The data consisted of liquid temperature profiles and mass transfer rates into a stagnant liquid. The ammonia-water system exhibited interfacial temperature rises from 6.9°K to 18.2°K. The interfacial temperature rise for the propane-decane system was 1.3°K. Simpler theoretical models were able to predict the mass transfer rates or the temperature profiles.

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