Modeling Catalytic Membrane Reactors using an Adaptative Wavelet-Based Collocation Method

• Type: Article in International Scientific Journal
• Date: 2002

Authors

J. M. Sousa (Author) FEUP; Paulo Cruz (Author) FEUP; Fernão. D. Magalhães (Author) FEUP; Adélio Mendes (Author) FEUP

Journal

Title: Journal of Membrane Science

Vol. 208

Pages: 57-68

ISSN: 0376-7388

Publisher: Elsevier

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Technology > Chemical technology

Other information

DOI: 10.1016/S0376-7388(02)00175-8

Abstract (EN): For certain operating conditions and reaction schemes, catalytic membrane reactors (CMRs) may present sharp concentration profiles in the membrane. Using conventional fixed grid methods for solving the model equations in such conditions may lead to inaccurate predictions of the reactor’s performance. This is demonstrated for two reaction systems: A⇌B (for which a semi-analytical solution is available) and A⇌B+3C (which describes the cyclohexane dehydrogenation). Simulation results obtained with a fixed grid method using finite differences are compared to those from an adaptive method using an algorithm based on interpolating wavelets. Showing higher accuracy and computational efficiency, the latter proved to be a useful tool in dealing with this kind of problems.

Language: English

Type (Professor's evaluation): Scientific