Mass and heat transfer at a helical coil imbedded in a fixed bed of cylinders with upward cocurrent gas-liquid flow

M. A. El-Naggara Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt

M. S. Mansoura Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt

A. H. Elshazlya Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt;b Chemical and Petrochemicals Engineering Department, Egypt-Japan University of Science and Technology (E-JUST), Alexandria, Egypt

S. A. Nosiera Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt

Y. A. El-Taweela Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt

M. H. Abdel-Aziza Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt;c Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh, Saudi ArabiaCorrespondence[email protected]

G. H. Sedahmeda Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt

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ABSTRACT

Rates of mass and heat transfer (by analogy) at the surface of a helical coil imbedded in a fixed bed of inert cylindrical packing were measured under upward two-phase (gas-liquid) flow by the electrochemical technique. The effects of geometrical and hydrodynamic parameters were considered. The performance of cylindrical packing was compared with that of Raschig rings and spheres. The analogy between heat and mass transfer was discussed and the importance of the present study for the design and operation of heterogeneous reactors that need rapid cooling in case of highly exothermic reactions was highlighted.

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Mass and heat transfer at a helical coil imbedded in a fixed bed of cylinders with upward cocurrent gas-liquid flow

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Mass and heat transfer at a helical coil imbedded in a fixed bed of cylinders with upward cocurrent gas-liquid flow

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