The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions

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	The Soret and Dufour Effects in Non-thermal Equilibrium Packed Beds with Forced Convection and Endothermic Reactions
其他题名	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
发表期刊	CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN	1004-9541
卷号	21 期号:8 页码:867-875
摘要	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.
其他摘要	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.
关键词	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
收录类别	CSCD
语种	英语
资助项目	[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记录号	CSCD:4920809
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/147949
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 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.