油煤浆表观黏度测定方法研究  

Determination of coal-oil slurry apparent viscosity

作　　者：吴艳[1,2,3] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《洁净煤技术》2014年第3期61-65,共5页Clean Coal Technology

基　　金："十二五"国家科技支撑计划资助项目(2012BAB19B05)

摘　　要：为建立油煤浆表观黏度测定标准,实现油煤浆表观黏度的准确测量,研究了多种煤液化油煤浆在不同条件下的流变行为,考察了剪切速率、测量温度、样品放置时间、读数开始时间等因素对油煤浆表观黏度测值的影响,并确定了油煤浆表观黏度测定方法的精密度。结果表明:测定油煤浆表观黏度的最佳条件为:剪切速率100 s-1,测量温度60℃,油煤浆取样后应立即进行黏度测定,启动旋转黏度计后,第11 min开始记录读数,每隔10 s记录一次,共计30次,以测定结果的平均值为样品黏度值,修约到整数位报出。规定油煤浆表观黏度测定方法的重复性限r=0.13η100 s-1-4.30,由于试验仪器条件的限制,未对再现性做出说明。To determine coal-oil slurry apparent viscosity accurately, establish unified determination method of coal-oil slurry apparent viscosity, investigate the rheologica] behavior of various coal liquefaction coal-oil slurry in different situations.Study the influence of shearing speed, measuring temperature, standing time of samples, start time of evaluation on apparent viscosity of coal-oil slurry.Confirm the method precision.The best condition is that,the shearing speed is 100 s-1,the measuring temperature is 60℃ .Under this condition,the apparent viscosity should be measured immediately.First, start the rotational viscometer, eleven minutes later,begin to record the value, the frequency of recording is 10 seconds,totaling thirty measurements.The results should be given in round figures.The repeatability limit τ=0.13η100s-1-4.30.Limited by instruments and time,the measuring method doesn＇t instruct the reproducibility.

关 键 词：油煤浆 表观黏度 剪切速率 精密度 重复性限 

分 类 号：TD849[矿业工程—煤矿开采] TQ529[矿业工程—矿山开采]