Journal article

Perturbation techniques for accelerated convergence of cyclic steady state (CSS) in oxygen VSA simulations

SJ Wilson, PA Webley

Chemical Engineering Science | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2002

Abstract

Non-isothermal PSA bulk gas separations are notoriously slow to converge to cyclic steady state (CSS). Most numerical simulators that model the slow transient behaviour of these processes share this slow pace of convergence. This difficulty with numerical simulators has long been recognised, and has hampered the optimisation of oxygen VSA.This paper outlines the application of perturbation techniques to enable more rapid determination of CSS temperature profiles. A number of different techniques are proposed. The simplest approach based on experimental observations involves a two-time-scale decomposition of the adsorbent temperature profile. This decomposition of the temperature term enables..

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University of Melbourne Researchers