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紧凑型甲烷重整器燃烧管道由燃料气体通道、多孔层以及固体平板组成。采用三维数值模拟方法,对甲烷入口速度、温度等对催化燃烧反应以及产热特性影响进行了研究。结果显示,甲烷入口速度由2.5 m/s增大到10 m/s时,最大化学反应速率提高了20.4%,CH4利用率下降了41.2%,最大热流量提高了11.8%;温度由873 K升高到1023 K时,反应速率提高了16.9倍;CH4利用率提高了7.5%;最大温升提高了2.1倍。研究结果对紧凑型甲烷重整器的设计开发具有一定的指导意义。
The compact methane reformer burner pipe consists of a fuel gas channel, a porous layer, and a solid plate. A three-dimensional numerical simulation method was used to study the effects of methane inlet velocity and temperature on the catalytic combustion reaction and heat production characteristics. The results showed that the maximum chemical reaction rate increased by 20.4%, the CH4 utilization decreased by 41.2% and the maximum heat flow increased by 11.8% when the methane inlet velocity increased from 2.5 m / s to 10 m / s. The temperature increased from 873 K High to 1023 K, the reaction rate increased by 16.9 times; CH4 utilization increased by 7.5%; maximum temperature increase of 2.1 times. The research results have certain guiding significance for the design and development of compact methane reformer.