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Open AccessFeature PaperArticle

Numerical Investigation of Ventilation Air Methane Catalytic Combustion in Circular Straight and Helical Coil Channels with Twisted Tape Insert in Catalytic-Monolith Reactors

1
Department of Mining and Materials Engineering, McGill University, 3450 University, Frank Dawson Adams Bldg., Montreal, QC H3A 2A7, Canada
2
Department of Mechanical Engineering, UniversitiTeknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia
3
State Key Laboratory of Mining Disaster Prevention and Control, Shandong Univ. of Science and Technology, Qingdao 266590, China
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(7), 797; https://doi.org/10.3390/catal10070797
Received: 22 June 2020 / Revised: 10 July 2020 / Accepted: 13 July 2020 / Published: 17 July 2020
(This article belongs to the Special Issue Catalytic Reactors Design for Industrial Applications)
In a catalytic combustion of ventilation air methane, one of the key factors determining the reactor performance is the geometry of the reactor. It should be designed to provide maximum energy conversion at minimum catalyst usage and operating cost. This numerical study is conducted to investigate the catalytic combustion of ventilation air methane from a gassy underground mine in a circular straight and helical reactor channel with twisted tape insert. A three-dimensional computational fluid dynamics model which considers conservation of mass, momentum, energy, and species together with chemical reactions, and constitutive relations for species properties and reactions kinetics was developed and validated against the previously published data. The effect of several key factors affecting the catalytic combustion performance such as inlet Reynolds number, twisted tape ratio, and reactor length are evaluated to obtain the optimum reactor parameters. For evaluation purpose, the reaction performance of the studied reactors will be compared to the straight reactor without twisted tape which is set as a baseline. The results give a firm confirmation on the superior performance of the reactors with twisted tape insert as compared to those without. In addition, it is found that helical reactors generate higher net power as compared to their respective straight reactor counterpart despite having lower FoM due to larger catalyst area. Interestingly, the higher twisting ratio offers better performance in terms of net power as well as FoM. Overall, the results highlight the potential of twisted tape insert application in catalytic combustion. View Full-Text
Keywords: catalytic combustion; ventilation air methane; helical reactor; twisted tape insert catalytic combustion; ventilation air methane; helical reactor; twisted tape insert
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MDPI and ACS Style

Chaedir, B.A.; Kurnia, J.C.; Chen, L.; Jiang, L.; Sasmito, A.P. Numerical Investigation of Ventilation Air Methane Catalytic Combustion in Circular Straight and Helical Coil Channels with Twisted Tape Insert in Catalytic-Monolith Reactors. Catalysts 2020, 10, 797. https://doi.org/10.3390/catal10070797

AMA Style

Chaedir BA, Kurnia JC, Chen L, Jiang L, Sasmito AP. Numerical Investigation of Ventilation Air Methane Catalytic Combustion in Circular Straight and Helical Coil Channels with Twisted Tape Insert in Catalytic-Monolith Reactors. Catalysts. 2020; 10(7):797. https://doi.org/10.3390/catal10070797

Chicago/Turabian Style

Chaedir, Benitta A.; Kurnia, Jundika C.; Chen, Lianjun; Jiang, Lishuai; Sasmito, Agus P. 2020. "Numerical Investigation of Ventilation Air Methane Catalytic Combustion in Circular Straight and Helical Coil Channels with Twisted Tape Insert in Catalytic-Monolith Reactors" Catalysts 10, no. 7: 797. https://doi.org/10.3390/catal10070797

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