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Prediction of Gas Holdup in a Three-Phase Internal Loop Airlift Fluidized Bed Reactor Using Newtonian and non-Newtonian Liquids

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  • Sivakumar Venkatachalam
  • Akilamudhan Palaniappan
  • Kannan Kandasamy

Abstract

The effect of superficial gas and liquid velocities, particle diameter and sphericity, physical and rheological properties of liquids on gas holdup were studied in a three phase internal loop airlift fluidized bed reactor. Air was used as a gas phase. Water, n-butanol, various concentrations of glycerol (60% and 80%) were used as Newtonian liquids and different concentrations (0.25%, 0.6% and 1.0%) of carboxy methyl cellulose (CMC) solutions were used as non-Newtonian liquids. Spheres, Bearl saddle and Rasich ring with different diameters were used as solid phases. Superficial gas velocity varied from 0.000142 m/s to 0.005662 m/s and superficial liquid velocity varied from 0.001 to 0.12 m/s. The experimental result shows that increase in particle size and superficial gas velocity increases gas holdup and decreases with increase in concentration of Newtonian and non-Newtonian systems. Based on the experimental results a separate correlation was developed to predict gas holdup for both Newtonian and non-Newtonian liquids for wide range of operating conditions.    Â

Suggested Citation

  • Sivakumar Venkatachalam & Akilamudhan Palaniappan & Kannan Kandasamy, 2010. "Prediction of Gas Holdup in a Three-Phase Internal Loop Airlift Fluidized Bed Reactor Using Newtonian and non-Newtonian Liquids," Modern Applied Science, Canadian Center of Science and Education, vol. 4(9), pages 110-110, September.
    • Handle: RePEc:ibn:masjnl:v:4:y:2010:i:9:p:110
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    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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