University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Simulation of rapid pressure swing adsorption and reaction processes

Alpay, E, Kenney, CN and Scott, DM (1993) Simulation of rapid pressure swing adsorption and reaction processes Chemical Engineering Science, 48 (18). pp. 3173-3186.

Full text not available from this repository.


A general model for non-isothermal adsorption and reaction in a rapid pressure swing process is described. Several numerical discretisation methods for the solution of the model are compared. These include the methods of orthogonal collocation, orthogonal collocation on finite elements, double orthogonal collocation on finite elements, and cells-in-series. Computationally, orthogonal collocation on finite elements is found to be the most efficient of these. The model is applied to air separation for oxygen production. Calculations confirm the formation of a concentration shock when an adsorbent bed is pressurised with air. The form and propagation of the shock over short times is found to be in excellent agreement with the exact similarity transformation solutions derived for an infinitely long bed. For air separation, novel experimental measurements, showing an optimum particle size for maximum product oxygen purity, are accurately described by the model. Calculations indicate that a poor separation results from ineffective pressure swing for beds containing very small particles, and from intraparticle diffusional limitations for beds containing very large particles. For adsorption coupled with reaction, finite rate and reversible reactions are considered. These include both competitive and non-competitive reaction schemes. For the test case of a dilute reaction A &.rlhar2; B + 3C, with B the only adsorbing species, bed pressurisation calculations are found to be in excellent agreement with the solutions obtained by the method of characteristics. © 1993.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Kenney, CN
Scott, DM
Date : 1 January 1993
DOI : 10.1016/0009-2509(93)80203-3
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:07
Last Modified : 24 Jan 2020 23:27

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800