摘要
以新疆将军庙煤样为研究对象,四氢萘为制浆、供氢溶剂,使用胶体磨湿磨制浆,考察了研磨时间对煤浆粒径的影响.通过激光粒度仪表征可得:磨煤1h,2h,3h和4h的主要粒径分布范围分别为8 000nm^10 800nm(2 000目~1 000目),2 400nm^2 900nm(6 000目~5 000目),800nm^1 200nm(18 700目~12 500目)和500nm^1 250nm(30 000目~12 000目).低压直接加氢液化实验结果表明,随煤样粒径减小,煤粉粒子间因团聚现象油产率反而下降,在其他液化条件都相同的条件下,200目煤样油产率为75.24%,1 340目煤样的油产率为59.96%.但对1 340目煤浆进行超声处理,其油产率提高到80.04%,增加了20%.
The coal object was obtained from Jiangjunmiao in Xinjiang.Tetralin as hydrogen donor and pulping solvent,the coal slurry was prepared with colloid mill by wet milling.The effect of the grinded time on coal slurry particle size was investigated.Particle size distribution was measured by Laster granulometer.The result showed that primary particle size distribution scope were 8 000 nm-10 800 nm（2 000 mesh-1 000 mesh）,2 400 nm-2 900 nm（6 000 mesh-5 000 mesh）,800 nm-1 200 nm（18 700 mesh-12 500 mesh）and 500 nm-1 250 nm（30 000 mesh-12 000 mesh）with grinded by 1 h,2 h,3 h,4 h,respectively.Results of the direct coal hydrogenation liquefaction experiment under low pressure showed that if the coal particle size become smaller,the reunion would happen in the coal particles,then the oil yield would decrease.With the same liquefaction condition,oil yield of 200 mesh coal sample was 75.24％,oil yield of 1 340 mesh coal sample was 59.96％; while,1 340 mesh coal sample was treated by ultrasonic treatment,oil yield has been greatly up to 80.04 ％ and increased by almost 20 ％.
出处
《煤炭转化》
CAS
CSCD
北大核心
2014年第2期28-32,共5页
Coal Conversion
基金
新疆维吾尔自治区高校科研项目(XJEDU2013I08)
新疆维吾尔自治区先进功能材料自治区重点实验室开放课题项目(XJDX0902-2012-03)
关键词
胶体磨
粒径
直接液化
油产率
colloid mill
particle size
direct liquefaction
oil yield
