褐煤的中温灰化特性研究  

Medium temperature ashing characteristics of Baori lignite

作　　者：曲洋[1] 初茉[1] 朱书全[1] 郝成亮 张超[1] 徐芳 QU Yang, CHU Mo, ZHU Shu-quan, HAO Chengliang, ZHANG Chao, XU Fang(School of Chemical and Environmental Engineering, China University of Mining and Technology （Beijing） , Beijing 100083, China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《煤炭工程》2018年第5期140-142,共3页Coal Engineering

基　　金：北京市科技计划项目(Z161100002616038)

摘　　要：应用等离子体低温灰化法(LTA)和中温氧化法(MTA)研究了宝日褐煤的灰化特性。结果表明:LTA灰化处理后剩余物含量为18.59%,其XRD矿相衍射特征峰可清晰识别;MTA灰化较LTA则随温度不同呈现差异性。温度在150~200℃时有机质氧化不完全(灰化剩余物为32.58%和21.67%);250℃时灰化较为完全(剩余物为17.51%)且矿相衍射特征峰识别度高;温度大于300℃后灰化产物过度氧化且以氧化矿物为主。250℃中温氧化法可近似替代等离子体低温灰化法,所需灰化时间为20h。The ashing characteristics of Baori lignite are studied by plasma low temperature ashing method（ LTA） and medium temperature ashing（ MTA）. The results show that,the content of the residue is 18. 59% through LTA treatment,and the XRD mineralization peak is clear; the oxidation method showes a difference with the temperature of LTA. The organic matter is not completely oxidized and ashing residue are 32. 58% and 21. 67% respectively at 150 ~ 200℃. The ashing is more complete at 250℃ and the residue is 17. 51%,and the characteristic peak of mineral is easily identified.The ashing product is over-oxidized and mainly composed of oxidized minerals after higher than 300℃. Method of MTA at250℃ can be used instead of LTA method,and the required ashing time is 20 h.

关 键 词：褐煤 中温 灰化 矿物 

分 类 号：TQ531.9[化学工程—煤化学工程]