Experimental Insights into the Coupling of Methane Combustion and Steam Reforming in a Catalytic Plate Reactor in Transient Mode

被引：0

作者：

Ashraf, M. Arsalan ^{[1
,4
]}

Tacchino, Stefano ^{[1
]}

Peela, Nageswara Rao ^{[2
,3
]}

Ercolino, Giuliana ^{[1
]}

Gill, Kirandeep K. ^{[4
]}

Vlachos, Dionisios G. ^{[2
]}

Specchia, Stefania ^{[1
]}

机构：

[1] Department of Applied Science and Technology, Politecnico di Torino, Torino,10129, Italy

[2] Department of Chemical and Biomolecular Engineering, University of Delaware, Newark,DE,19716-3110, United States

[3] Department of Chemical Engineering, Indian Institute of Technology, Guwahati,781039, India

[4] Department of Chemical Engineering, University of Bath, Bath,BA2 7AY, United Kingdom

来源：

Industrial and Engineering Chemistry Research | 2021年 / 60卷 / 01期

关键词：

Combustion products - Computational fluid dynamics simulations - Hydrogen generations - Methane steam reforming - Microstructured reactors - Oxidation of methane - Threedimensional (3-d) - Transient experiments;

D O I：

暂无

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学科分类号：

摘要：

The microstructured reactor concept is very promising technology to develop a compact reformer for distributed hydrogen generation. In this work, a catalytic plate reactor (CPR) is developed and investigated for the coupling of methane combustion (MC) and methane steam reforming (MSR) over Pt/Al2O3-coated microchannels in cocurrent and counter-current modes in transient experiments during start-up. A three-dimensional (3D) computational fluid dynamics (CFD) simulation shows uniform velocity and pressure distribution profiles in microchannels. For a channel velocity from 5.1 to 57.3 m/s in the combustor, the oxidation of methane is complete and self-sustainable without explosion, blow-off, or extinction; nevertheless, flashbacks are observed in counter-current mode. In the reformer, the maximum methane conversion is 84.9% in cocurrent mode, slightly higher than that of 80.2% in counter-current mode at a residence time of 33 ms, but at the cost of three times higher energy input in the combustor operating at ∼1000 °C. Nitric oxide (NO) is not identified in combustion products, but nitrous oxide (N2O) is a function of coupling mode and forms significantly in cocurrent mode. This research would be helpful to establish the start-up strategy and environmental impact of compact reformers on a small scale. © 2020 American Chemical Society.

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页码：196 / 209