微通道内低浓度甲烷催化燃烧的数值模拟  

Numerical Simulation of Catalytic Combustion of CH_4 in Microchannel

作　　者：彭雨程 王恒[1,2] 冯俊小[1,2] 张积浩 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]冶金工业节能减排北京市重点实验室,北京100083

出　　处：《辽宁化工》2016年第3期356-359,共4页Liaoning Chemical Industry

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-SD-12-013A);北京市教委共建科研基地建设项目-催化燃烧技术实验平台建设

摘　　要：矿井通风瓦斯是矿井中主要由煤层气构成的以甲烷为主的有害气体,它是在煤的生成和煤的变质过程中伴生的气体,如今催化燃烧技术已成为处理矿井瓦斯最为有效的处理方法。文章模拟了不同入口预热温度、不同入口流速、不同甲烷体积分数以及不同通道尺寸大小对低浓度甲烷转化率及出口烟气温度的影响,发现提高入口温度、甲烷体积分数、降低入口流速以及减小通道尺寸可以提高甲烷转化率及出口烟气温度。Mine gas is mainly composed of CH4; it is associated gas from generation and metamorphism of coal. Now, the catalytic combustion technique has become an effective treatment method for the mine gas. In this paper, effect of entrance temperature, gas flow rate, CH4 concentration and pipe diameter on conversion rate of CH4 and exit gas temperature was investigated. The results indicate that, higher entrance temperature and CH4 concentration as well as lower gas flow rate and pipe diameter can increase conversion rate of CH4 and exit gas temperature.

关 键 词：催化燃烧 甲烷 数值模拟 

分 类 号：X51[环境科学与工程—环境工程]