TY - JOUR
T1 - Minimization of hot spot in a microchannel reactor for steam reforming of methane with the stripe combustion catalyst layer
AU - Jeon, Seung Won
AU - Yoon, Won Jae
AU - Baek, Changhyun
AU - Kim, Yongchan
N1 - Funding Information:
This work was supported by Business for Academic-industrial Cooperative establishments funded Korea Small and Medium Business Administration in 2012 (Grants No. C0019714 ) and the Human Resources Development program (No. 20124010203250) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy .
PY - 2013/10/25
Y1 - 2013/10/25
N2 - Hot spot formation is inevitable in a heat exchanger microchannel reactor used for steam reforming of methane because of the local imbalance between the generated and absorbed heat. A stripe configuration of the combustion catalyst layer was suggested to make the catalytic combustion rate uniform in order to minimize the hot spot near the inlet. The stripe configuration was optimized by response surface methodology with computational fluid dynamics. With the optimal catalyst layer, the hot spot was not observed near the inlet and the maximum temperature decreased by 130 K from that of the uniform catalyst layer without any conversion loss. The maximum relative particle diameters of the uniform and the optimal stripe catalyst layer were about 3.68 and 2.51, respectively, and the surface-averaged particle diameter of the optimal stripe catalyst layer was 7.64% less than that of the uniform stripe catalyst layer.
AB - Hot spot formation is inevitable in a heat exchanger microchannel reactor used for steam reforming of methane because of the local imbalance between the generated and absorbed heat. A stripe configuration of the combustion catalyst layer was suggested to make the catalytic combustion rate uniform in order to minimize the hot spot near the inlet. The stripe configuration was optimized by response surface methodology with computational fluid dynamics. With the optimal catalyst layer, the hot spot was not observed near the inlet and the maximum temperature decreased by 130 K from that of the uniform catalyst layer without any conversion loss. The maximum relative particle diameters of the uniform and the optimal stripe catalyst layer were about 3.68 and 2.51, respectively, and the surface-averaged particle diameter of the optimal stripe catalyst layer was 7.64% less than that of the uniform stripe catalyst layer.
KW - Catalytic surface area
KW - Heat exchanger reactor
KW - Hot spot
KW - Microchannel
KW - Response surface methodology
KW - Steam reforming of methane
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U2 - 10.1016/j.ijhydene.2013.08.074
DO - 10.1016/j.ijhydene.2013.08.074
M3 - Article
AN - SCOPUS:84885429133
SN - 0360-3199
VL - 38
SP - 13982
EP - 13990
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 32
ER -