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Pressure Drop Hysteresis of Hydrodynamic States in Packed Tower for Foaming Systems

*Vijay Sodhi  -  Department of Chemical and Biotechnology Engineering, Beant College of Engineering and Technology, Gurdaspur, Punjab 143521, India
Renu Gupta  -  Department of Chemical Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India

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An experimental investigation was carried out to determine the effects of gas and liquid flow velocities and surface tension on the two-phase phase pressure drop a in a downflow trickle bed reactor. Water and non- Newtonian foaming solutions were employed as liquid phase. More than 240 experimental points for the trickle flow (GCF) and foaming pulsing flow (PF/FPF) regime were obtained for present study. Hydrodynamic characteristics involving two-phase pressure drop significantly influenced by gas and liquid flow rates. For 15 and 30 ppm air-aqueous surfactant solutions, two-phase pressure drop increases with higher liquid and gas flow velocities in trickle flow and foaming/pulsing flow regimes. With decrease in surface tension i.e. for 45 and 60 ppm air-aqueous surfactant systems, two-phase pressure drop increases very sharply during change in regime transition at significantly low liquid and gas velocities. Copyright © 2011 BCREC UNDIP. All rights reserved.

(Received: 14th March 2011, Revised: 29th June 2011; Accepted: 4th July 2011)

[How to Cite: V. Sodhi, and R. Gupta. (2011). Pressure Drop Hysteresis of Hydrodynamic States in Packed Tower for Foaming Systems. Bulletin of Chemical Reaction Engineering & Catalysis, 6(2): 115-122. doi:10.9767/bcrec.6.2.828.115-122]

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Keywords: Trickle Bed Reactor; Foaming; Hydrodynamics; Pressure Drop

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