低浓度瓦斯在泡沫陶瓷内催化燃烧特性的研究  

Study on Catalytic Combustion of Low-concentration Coal Mine Gas in Ceramic Foams

作　　者：丁艳[1] 宋正昶 袁隆基 

机构地区：[1]中国矿业大学徐海学院,江苏徐州221008 [2]中国矿业大学电气与动力工程学院,江苏徐州221116

出　　处：《煤炭技术》2018年第1期162-164,共3页Coal Technology

基　　金：国家自然科学基金重点资助项目(50534090)

摘　　要：对低浓度瓦斯在泡沫陶瓷中催化燃烧的特性进行研究,结果表明:Si C载体催化燃烧性能优于Al_2O_3载体,更有利于低浓度瓦斯的稳定燃烧。当量比相同且稳定燃烧时,燃烧室温度随瓦斯流速的增加而逐渐增大,当增大到一定程度,燃烧室温度反而会下降,而CO的排放出现先下降后升高的趋势,NO的排放出现了先升高后下降的规律。当量比逐渐增大的时候,CO的排放会不断下降,且一定当量比下,NO的排放浓度随流速的变化有一至高点。Catalytic combustion of low concentration gas in foam ceramic was studied. The results show that the catalytic combustion performance of SiC carrier is better than that of Al2O3 carrier, which is more conducive to the stable combustion of low concentration gas. In the condition of the same equivalence ratio and stable combustion, the temperature of the Combustion chamber was increasing with the increasing of gas flow rate, but increasing to a certain extent, the combustion chamber temperature decreased on the contrary, while CO emissions decreased first and then increased, and NO emissions had increased first and then decreased regularity. When the equivalence ratio increased gradually, the emission of CO decreased continuously, and with a certain degree of equivalent ratio, emission concentration of NO was reaching to a peak with change of flow velocity.

关 键 词：低浓度瓦斯 泡沫陶瓷 催化燃烧 温度分布 污染物排放 

分 类 号：TD712[矿业工程—矿井通风与安全]