ISOTHERMAL DRYING RATE OF ETHYLBENZENE FROM A SPHERICAL POLYSTYRENE PELLET

Yoon JS

Korean Journal of Chemical Engineering, Vol.12, No.3, 387-390, July, 1995

Desorption behaviour of ethylbenzene from a spherical polystyrene pellet was investigated. The predicted drying rate using an average diffusion coefficient differed substantially from that simulated with concentration dependent diffusivity. As the drying temperature decreased and the initial solute content of the pellet increased, the difference between the two calculations became more significant.

Keywords:Desorption;Simulation;Ethylbenzene;Polystyrene

[References]

Crank J, The Mathematics of Diffusion Ch. 6, 2nd ed., Oxford University Press (1975)
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Duda JL, Vrentas JS, Ju ST, Liu HT, AIChE J., 28(2), 279 (1982)
Floyd S, Ph.D. Dissertation, "Heat and Mass Transfer Resistance in Polymerization of Olefin over Solid Catalysts," University of Wisconsin (1986)
Liu HT, Ph.D. Dissertation, "A Study of Thermodynamics and Molecular Diffusion in Polymer-Solvent System," The Pensylvania State University (1980)
Patankar SV, "Numerical Heat Transfer and Fluid Flow," Ch. 4, p. 41, McGraw-Hill (1980)
Perry's Chemical Engineers' Hand Book 6th ed., p. 3-285 and references therein (1984)

[1] Crank J, The Mathematics of Diffusion Ch. 6, 2nd ed., Oxford University Press (1975)

[2] Duda JL, Berens AR, "Transport Properties," in "Devolatilization of Polymers," ed. by Biesenberger, J.A. Hanser Publishers, New York (1983)

[3] Duda JL, Vrentas JS, Ju ST, Liu HT, AIChE J., 28(2), 279 (1982)

[4] Floyd S, Ph.D. Dissertation, "Heat and Mass Transfer Resistance in Polymerization of Olefin over Solid Catalysts," University of Wisconsin (1986)

[5] Liu HT, Ph.D. Dissertation, "A Study of Thermodynamics and Molecular Diffusion in Polymer-Solvent System," The Pensylvania State University (1980)

[6] Patankar SV, "Numerical Heat Transfer and Fluid Flow," Ch. 4, p. 41, McGraw-Hill (1980)

[7] Perry's Chemical Engineers' Hand Book 6th ed., p. 3-285 and references therein (1984)