Coupled Transport Phenomena in Corrugated Photocatalytic Reactors

作     者：Adam A. Donaldson ZHANG Zisheng 

作者机构：Department of Process Engineering and Applied Science Dalhousie University P.O. Box 15000 Halifax NovaScotia Canada B3H 4R2 Department of Chemical and Biological Engineering University of Ottawa 161 Louis Pasteur Street OttawaCanada K1N 6N5 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2011年第19卷第5期

页      面：763-772页

核心收录：

学科分类：080706[工学-化工过程机械] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 

主　　题：photochemical reactions reactor analysis computational fluid dynamics surface chemistry/physics mass transfer 

摘      要：Corrugated reactors are known for their use in applications requiring UV-exposure, whereby media flowing within the corrugated channel react with a photo-active catalyst impregnated on the surface （i.e. TiO2）. The performance in these systems is dependent on catalyst properties and reactivity for a given light source, in conjunc-tion with the coupled transport of reactants within the media and photons falling incident to the catalyst surface. Experimental and computational analyses of local mass transfer and radiation pattems for a broad range of corrugation angles, depths, and non-idealities introduced during manufacture （i.e. fold curvature） are thus integrated to the design and optimization of these systems. This work explores techniques for determining incident energy distribu-tions on the surface of corrugated reactor geometries with non-ideal cross-sectional profiles, and the local and overall mass transfer rates obtained using computational fluid dynamics and experimental analysis. By examining the reaction kinetics for the photo-degradation of 4-chlorophenol over a TiO2 catalyst, the effects of surface area, energy incidence with photon recapture, and local mass transfer on overall reactor performance are presented to highlight ootimization concerns for these tvoes of reactors.