褐煤改性对水煤浆浓度影响的研究  

Effect of lignite modification on the concentration of coal water mixture(CWM)

作　　者：刘烨炜[1,2] 张胜局[1,2] 何国锋[2] 段清兵[1,2] 

机构地区：[1]国家水煤浆工程技术研究中心,北京100013 [2]煤炭科学研究总院节能工程技术研究分院,北京100013

出　　处：《煤质技术》2013年第1期8-10,17,共4页Coal Quality Technology

摘　　要：通过对云南、呼伦贝尔2种褐煤多因素条件下的改性实验,得出了褐煤改性的最佳条件:原煤粒度小于1mm、加热温度250℃、加热停留时间1.5h。改性后的褐煤水分降低50%以上,其成浆性浓度比改性前提高4个百分点,流动性、稳定性均有所改善。According to the modification experiments with two types of lignites from Yunnan and Hulunbeier under conditions of multiple factors, the optimal operating condition of lignite modification experiment was obtained： the size of the raw coal particles should be kept less than 1 ram; the heating temperature should be maintained at 250℃ ; and the heating time was supposed to be 1.5 h. After the modification process, the moisture content had been reduced by more than 50%, the concentration of coal water mixture had been improved by 4 percent and the fluidity and stability of the coal water mixture were enhanced at the same time

关 键 词：褐煤 改性 水煤浆 浓度 

分 类 号：TQ534.4[化学工程—煤化学工程]