IEC 169 |
| Bo Hyun Ryu, Department of Environmental Engineering, Chungnam National University, 220, Gung-dong,Yusong - gu, Taejon, 305-764, South Korea, Jae-Ho Kim, Department of Clean Energy, Korea Institute of Energy Research, 71-2, Jang -dong, Yusong-gu, Taejeon, 305-343, South Korea, and Choon Han, Department of Chemical Engineering, Kwangwoon University, 447-1, Wolgye-dong , Nowon-gu, Seoul, 139-701, South Korea. |
| For gas-solid reactions in a porous solid as gasification of RDF(refuse derived fuel), the overall reaction rate is determined by the diffusion rate and chemical reaction rate. The widely employed homogeneous and shrinking core models represent the extremes that might be encountered in the limits of very rapid and very slow diffusion of the reacting gases. Reactions between porous solids and gases are usually interpreted in terms of idealized models based on sharply defined reaction zones within the particle. Gasification kinetics of RDF was studied by thermogravimetry(TG) in this report. Thermogravimetric analysis is a well-known technique for the study of degradation processes such as carbonization or gasification. The differential conservation equations that describe typical gas-solid reactions, such as activation of RDF chars, yield a set of coupled second-order partial differential equations. The solution of these coupled equations by exact analytical methods is impossible. In addition, an approximate or exact solution provided predictions for either reaction or diffusion controlling cases in this report. |
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General Poster Session
5:00 PM-7:00 PM, Tuesday, March 25, 2003 Convention Center -- Hall G, Poster
Division of Industrial and Engineering Chemistry |