褐煤煤粉干燥立管提质干燥的流动特性研究  

STUDY ON DRYING UPGRADING AND FLOW CHARACTERISTIC OF LIGNITE IN VERTICAL PIPE DRYER

作　　者：齐庆杰[1] 黄声和[1] 杨硕[2] 郭仁宁[1] 董子文[3] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新教授博士后123000 [2]东北大学材料与冶金学院,沈阳博士生110000 [3]辽宁工程技术大学安全与工程学院,辽宁阜新硕士生123000

出　　处：《煤炭转化》2013年第2期11-15,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(50476032);中国博士后科学基金资助项目(2004035555);辽宁省高等学校新世纪优秀人才计划基金资助项目(RC-04-04)

摘　　要：通过实验研究褐煤煤粉在提质干燥过程受哪些因素的影响,利用FLUENT6.3.26对实验得到的数据进行温度、速度和压力场的数值模拟(气固两相流).对实验得到的数据和FLU-ENT6.3.26的数值模拟情况进行分析可知,褐煤煤粉在低气固比(体积比)进行提质干燥时,褐煤煤粉微粒的湿度有很大变化,提质干燥效果理想;在褐煤煤粉提质干燥过程中提高入口烟气温度,煤粉的干燥效果有很大提高;褐煤煤粉在提质干燥过程中烟气速度对褐煤粉颗粒湿度的影响很小.Study on lignite coal powder in the drying process to mention the quality by which factors and how the factors are affected. Experimental data is used for the numerical simu- lation of the temperature, velocity and pressure fields by FLUENT6.3.26. It showed that lignite coal particles humidity changes when the brown one was upgrading and dry in low solid-gas ratio, and the results of upgrading and dry of the lignite is perfect; the drying effect of the pulverized coal had greatly improved when the inlet flue gas temperature was raised in the drying process, the flue gas velocity has little effect on the humidity of lignite powder particles.

关 键 词：褐煤 提质 干燥 数值模拟 

分 类 号：TQ536[化学工程—煤化学工程] TQ028.67