泡沫陶瓷内瓦斯气体预混燃烧火焰传播规律与燃烧器功率的试验研究  

Propagation Law of Premix Combustion Flame of Gas in Foamed Ceramics and Study on Test for Power of Combustor

作　　者：李德波[1] 宋正昶[2] 徐齐胜[1] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080 [2]中国矿业大学电力学院,江苏徐州221116

出　　处：《广东电力》2013年第4期13-16,76,共5页Guangdong Electric Power

基　　金：国家自然科学基金重点资助项目(50534090)

摘　　要：为了研究体积分数小于30%的瓦斯在泡沫陶瓷内的燃烧、传热与污染排放特性,设计并搭建了体积分数小于30%的瓦斯燃烧实验台,研究了体积分数小于30%的瓦斯在泡沫陶瓷内预混燃烧火焰传播规律和燃烧器功率。试验结果发现:随着混合可燃气体流速的变化,存在有焰燃烧和无焰燃烧两种燃烧火焰;产生脱火现象时,CO的浓度会急剧增大,泡沫陶瓷表面温度迅速降低;在相同物质的量分数下,20 PPI的泡沫陶瓷燃烧器功率调节范围最宽,调节范围随量分数的增加而增加。For studying characteristics of combustion, heat transformation and pollution discharge of gas with less than 30% volume fraction in foamed ceramics, this paper introduces one gas combustion experiment table for testing and studies propa- gation law of premix combustion flame of gas with less than 30% volume fraction in foamed ceramics and power of combus- tot. The testing result discovers that with changes of flow velocity of mixed inflammable gas, there are two kinds of combus- tion flame including flame combustion and flameless combustion, when happening blow-off, the density of CO will increase greatly while the surface temperature of foamed ceramics will decrease rapidly and with the same molar ratio, adjustable range of the power of 20 PPI foamed ceramics combustor is the widest which may increase with increase of molar ratio.

关 键 词：煤矿瓦斯 燃烧 泡沫陶瓷 火焰 燃烧器功率 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]