Three-Dimensional CFD Model for a Flat Plate Photocatalytic Reactor: Degradation of TCE in a Serpentine Flow Field

被引：21
作者：
Jarandehei, Asefeh
De Visscher, Alex
机构：
[1] Univ Calgary, Dept Chem & Petr Engn, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada
[2] Univ Calgary, CEERE, Schulich Sch Engn, Calgary, AB T2N 1N4, Canada
来源：
AICHE JOURNAL | 2009年 / 55卷 / 02期
关键词：
CFD; flow modeling; photocatalytic degradation; TCE; serpentine flow field; AIR-POLLUTION REMEDIATION; CHLORIDE VC OXIDATION; GAS-PHASE; HETEROGENEOUS PHOTOCATALYSIS; TIO2; PHOTOCATALYST; TITANIUM-DIOXIDE; MONOLITH REACTOR; UV/TIO2; PROCESS; FLUIDIZED-BEDS; TRICHLOROETHYLENE;
D O I：
10.1002/aic.11692
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Computational fluid dynamics (CFD) simulation was applied to a photocatalytic reactor with surface reaction for trichloroethylene (TCE) oxidation at various pollutant concentrations, and flow rates. First-order and Langmuir-Hinshelwood kinetics for TCE removal rate were considered. The results were compared with those from experiments of Demeestere et al. (Appl Catal B Environ. 2004;54:261-274) in a flat plate photocatalytic reactor with serpentine geometry. The flow regime was laminar. Through the CFD simulation, the velocity field and the concentration gradient of TCE in the reactor were studied in detail. At Reynolds numbers around 900, the laminar flow becomes unstable. Under such a condition, when flow passes the 180 degrees sharp turns, due to formation of secondary flow and consequently vortices, there is a lot of cross-sectional mixing in the reactor. This kind of studies can help us to model the photocatalytic reactor as accurately as possible. (c) 2008 American Institute of Chemical Engineers AIChE J, 55: 312-320, 2009
引用
收藏
页码：312 / 320
页数：9
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