低挥发分煤NO释放特性试验研究  

An experimental research on the NO release characteristics of low volatile coal

作　　者：周俊虎[1] 周宁[1] 周志军[1] 陈瑶姬[1] 刘建忠[1] 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《能源工程》2010年第3期44-47,55,共5页Energy Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(2009AA05Z301)

摘　　要：利用固定床反应器,研究了几种低挥发分煤种燃烧过程中的NO释放规律。试验结果表明,随来流O2的增加,NO生成峰值有所升高,但是峰宽变化不大,同时NO转化率随O2的增加而提高;当温度升高时,NO生成峰值有明显提高,挥发分析出燃烧提早,但是NO转化率反而随温度升高而降低;随着煤粉粒径的减小,燃烧过程中NO转化率先是随之降低,但达到一定细度后再减小煤粉粒径,NO转化率不但不降低,反而随着粒径的减小而升高。A fixed-bed reactor systematic was used to study the NO release features. The experimental results showed that the NO generation peak elevated with the increase of O2 , at the same time, the rate of NO conversion improved with the increase of O5 ; When the temperature rised, NO generated a noticeable increase in the peak, precipitation and burning of volatile began early, but the NO conversion decreasd with temperature increasing; With the reduction of coal particle size, NO conversion came down first, however reducing the coal particle size after reaching a certain fineness, it was useless to drop the conversion.

关 键 词：低挥发分煤 NO释放特性 NO转化率 氧浓度 温度 粒径 

分 类 号：TK16[动力工程及工程热物理—热能工程]