云南昭通褐煤低温热干燥特性的研究  

Research on Thermal Drying Characteristics to Zhaotong Yunnan Lignite in Low Temperature

作　　者：蒋雯菁[1] 田菊[1] 姚鹏[1] 朱洁丰[1] 刘建忠[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,杭州310027

出　　处：《煤炭技术》2014年第7期218-221,共4页Coal Technology

基　　金：国家重点基础研究发展规划项目(973计划;2010CB227001)

摘　　要：采用低温加热法,以云南昭通褐煤为研究对象,以温度、煤粉粒度为变量,研究其对褐煤干燥特性的影响。结果表明:随干燥温度的提高和煤粉粒径的减小,干燥速率增大,蒸发同样水分的时间缩短,结束干燥的时间提前;温度至少在100℃以上进行云南昭通褐煤的干燥较为适宜;根据实验数据分析计算,发现Hii等人的干燥模型最适合昭通褐煤的低温热干燥过程模拟。Took temperature and coal particle size as variables to find the effect on drying lignite in a low temperature.The results show that drying rate increases,the evaporation of water also shortens and the end of the drying time advances with the drying temperature increasing and the particle size decreasing,.The drying temperature above 100 ℃ is more appropriate.Based on experimental data analysis,we found the drying model by Hii was the most suitable model to low temperature thermal drying process simulation of ZhaoTong lignite.

关 键 词：褐煤 低温加热 干燥特性 

分 类 号：TD849[矿业工程—煤矿开采] TQ530.2[矿业工程—矿山开采]