Enhancement of hydrogen reaction in a micro-channel by catalyst segmentation

摘要: Abstract The paper addresses the combustion characteristics of multi-segment catalysts in a micro-reactor by numerical simulation with detailed heterogeneous and homogeneous chemistries. effect catalyst is delineated terms different dispositions, flow conditions reactor properties. With fixed total length (1 cm), reveals better performance than single catalyst. space between segments reduces inhibition reactions promotes this region since neighboring help to maintain high wall temperature. Therefore, can shift upstream results dispositions show that more has but distance no obvious effects due fast reaction rate hydrogen. For conditions, indicate disposition conversion ratio even though there fluid for fuel-lean condition. inlet velocities benefit on lower velocity. However, it extend blowout Finally dimension material are simulated. Although strengthen small channel, still benefit. thermal conductivity do not have difference These be used design catalytic hydrogen/air reactions.