Numerical simulation of continuous countercurrent adsorption systems

(1992) Numerical simulation of continuous countercurrent adsorption systems. Masters thesis, King Fahd University of Petroleum and Minerals.


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Theoretical models for unsteady state continuous countercurrent adsorption systems are developed both for two section and four section (SORBEX) equivalent countercurrent processes having nonlinear equilibria. Further, a detailed model representing the actual system is developed by writing appropriate differential equations for each adsorption column. An axially dispersed plug flow model with linear driving force rate expression for mass transfer and Langmuir equilibria are considered. For the equivalent models, an equivalent solid phase velocity was assumed and for the detailed model, time dependent boundary conditions for each column are formulated and related to the switching time. Computations are performed for several cycles till the cyclic steady state is obtained. The results obtained from the equivalent and detailed models for the limiting cases of linear and nonlinear isotherms are compared with available experimental data and are found to agree well. The effect of various process parameters on the performance of the systems are investigated for all models. There exists a set of optimum values of all the process parameters which can be evaluated from the present simulation.

Item Type: Thesis (Masters)
Subjects: Chemical Engineering
Department: College of Chemicals and Materials > Chemical Engineering
Committee Advisor: Hassan, Essam E.
Committee Members: Loughlin, Kevin F. and Beg, Shafkat A.
Depositing User: Mr. Admin Admin
Date Deposited: 22 Jun 2008 14:02
Last Modified: 01 Nov 2019 13:59