A comparative computational study of diesel steam reforming in a catalytic plate heat-exchange reactor
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- 作者：Mayur Mundhwa ; Christopher P. Thurgood ; Harsh Dhingra ; Rajesh D. Parmar and Brant A. Peppley
- 刊名：AIChE Journal
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：63
- 期：3
- 页码：1102-1113
- 全文大小：572K
- ISSN：1547-5905
文摘
A two-dimensional steady-state model of a catalytic plate reactor for diesel steam reforming is developed. Heat is provided indirectly to endothermic reforming sites by flue gas from a SOFC tail-gas burner. Two experimentally validated kinetic models on diesel reforming on platinum (Pt) catalyst were implemented for a comparative study; the model of Parmar et al., Fuel. 2010;89(6):1212–1220 for a Pt/Al2O3 and the model of Shi et al., International Journal of Hydrogen Energy. 2009;34(18):7666–7675 for a Pt/Gd-CeO2 (GDC). The kinetic models were compared for: species concentration, approach to equilibrium, gas hourly space velocity and effectiveness factor. Cocurrent flow arrangement between the reforming and the flue gas channels showed better heat transfer compared to counter-current flow arrangement. The comparison between the two kinetic models showed that different supports play significant role in the final design of a reactor. The study also determined that initial 20% of the plate reactor has high diffusion limitation suggesting to use graded catalyst to optimize the plate reactor performance.