| The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions | |
| Alternative Title | The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions |
| Li Mingchun; Zhao Zhongliang; Jing Yu; Liu Jiatao; Wu Yusheng | |
| 2013 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 21Issue:8Pages:867-875 |
| Abstract | To study the influence of the Soret and Dufour effects on the reactive characteristics of a porous packed bed with endothermic reactions and forced convection, a two-dimensional mathematical model considering the cross-diffusion effects was developed in accordance with the thermodynamics of irreversible processes and the local thermal non-equilibrium model. The simulation results were validated by comparing with experimental data. The influence of the Soret and Dufour effects on the heat transfer, mass transfer and endothermic chemical reaction in the non-thermal equilibrium packed bed is discussed. It was found that when the Peclet number reaches 1865, the maximum relative error of the concentration of gas product induced by the Soret effect is 34.7% and that of the solid fractional conversion caused by the Dufour effect is 10.8% at reaction time 160 s and initial temperature 1473 K. The differences induced by the Soret and Dufour effects are demonstrated numerically to increase gradually with the initial temperature of feeding gas and the Peclet number. |
| Other Abstract | To study the influence of the Soret and Dufour effects on the reactive characteristics of a porous packed bed with endothermic reactions and forced convection, a two-dimensional mathematical model considering the cross-diffusion effects was developed in accordance with the thermodynamics of irreversible processes and the local thermal non-equilibrium model. The simulation results were validated by comparing with experimental data. The influence of the Soret and Dufour effects on the heat transfer, mass transfer and endothermic chemical reaction in the non-thermal equilibrium packed bed is discussed. It was found that when the Peclet number reaches 1865, the maximum relative error of the concentration of gas product induced by the Soret effect is 34.7% and that of the solid fractional conversion caused by the Dufour effect is 10.8% at reaction time 160 s and initial temperature 1473 K. The differences induced by the Soret and Dufour effects are demonstrated numerically to increase gradually with the initial temperature of feeding gas and the Peclet number. |
| Keyword | CHEMICAL-REACTION SYSTEM POROUS-MEDIA MASS-TRANSFER NATURAL-CONVECTION VERTICAL SURFACE HEAT SIMULATION FLOW TRANSPORT MODEL heat and mass transfer thermal decomposition cross-diffusion effects porous packed bed |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] ; [Special Project for High-end CNC Machine Tools and Basic Manufacturing Equipment of China] ; [Liaoning Province College Excellent Talents Fund Project] |
| CSCD ID | CSCD:4920809 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/147949 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Li Mingchun,Zhao Zhongliang,Jing Yu,et al. The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2013,21(8):867-875. |
| APA | Li Mingchun,Zhao Zhongliang,Jing Yu,Liu Jiatao,&Wu Yusheng.(2013).The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions.CHINESE JOURNAL OF CHEMICAL ENGINEERING,21(8),867-875. |
| MLA | Li Mingchun,et al."The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions".CHINESE JOURNAL OF CHEMICAL ENGINEERING 21.8(2013):867-875. |
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