含水率对玉米秸秆粉阴燃过程的影响  

Effects of Moisture Content on Smoldering of Corn Stalk Powder

作　　者：何芳[1] 唐秋霞[1] 李永军[1] 闸建文[1] 蔡红珍[1] 柏雪源[1] 

机构地区：[1]山东理工大学农业工程与食品科学学院,淄博255049

出　　处：《燃烧科学与技术》2012年第5期415-420,共6页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51076087);山东省中青年科学家奖励基金资助项目(BS2010NJ015)

摘　　要：采用堆积粉体自然向下阴燃实验的方法,研究了湿基0～30%范围内含水率对玉米秸秆粉体内部燃烧过程的影响.实验结果表明,在实验所采用的圆柱形反应器中,物料阴燃过程可近似为一维传播过程;不同含水率对点火过程、物料内部干燥过程影响显著,对物料内部最高温度、内部炭氧化过程以及圆柱反应器径向温度分布等影响均较小;在各种含水率下玉米秸秆粉阴燃过程的内部最高温度逐渐升高.In this study, the effect of moisture content（between 0 and 30%）on combustion inside piled corn stalk powder was investigated experimentally by the smoldering method. The results showed that the propagation of smoldering inside cylindrical reactor is quasi-one-dimensional, and that moisture content has significant effect on the ignition and drying of corn stalk powder but little influence on the maximum temperature inside fuel bed, char oxidation rate and radial temperature distribution. It is also shown that the maximum temperature inside fuel bed increases during smoldering of corn stalk powder.

关 键 词：玉米秸秆粉 含水率 阴燃 

分 类 号：TQ91[化学工程]