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内蒙高温煤焦油的流动性能改善研究

发表时间:2018-10-15  浏览量:69  下载量:21
全部作者: 张磊,周国莉,曲啸洋,刘盼,郝昱
作者单位: 郑州大学化工与能源学院
摘 要: 为改善内蒙高温煤焦油流动性差的问题,首先通过元素分析及X射线衍射(X-ray diffraction,XRD)测定等方法对其基本性质进行分析,结果显示,原料的黏度较大,且与蜡结晶无关。进而探究温度对内蒙中、高温煤焦油黏度的影响,得到了黏温曲线。结果表明,当温度升高至30℃时,内蒙中温煤焦油有良好的流动性能,此时黏度可降至510 mPa∙s;而内蒙高温煤焦油在50℃才能达到相同的降黏效果。因此,进一步采用添加有机添加剂的方法来改善内蒙高温煤焦油的流动性能。分别向其中加入不同用量的甲苯、油酸、硬脂酸、乙醇、四氢呋喃等五种有机添加剂,结果表明,添加剂添加量越大,高温煤焦油黏度降低得越明显,其中,油酸的降黏率始终保持最大,表明油酸对高温煤焦油的降黏效果最好。
关 键 词: 煤化学工程;高温煤焦油;流动性;添加剂;降黏效果
Title: Research on the improvement of the fluidity of Inner Mongolia high temperature coal tar
Author: ZHANG Lei, ZHOU Guoli, QU Xiaoyang, LIU Pan, HAO Yu
Organization: School of Chemical Engineering and Energy, Zhengzhou University
Abstract: To improve the poor fluidity of Inner Mongolia high temperature coal tar (IMHTCT), its basic properties were firstly analyzed using elemental analysis and X-ray diffraction (XRD) determination in this paper. The results demonstrated that the viscosity of raw materials was relatively large and had nothing to do with the wax crystallization. Furthermore, the effect of temperature on viscosity of IMHTCT and Inner Mongolia medium temperature coal tar (IMMTCT) was respectively discussed to get the viscosity-temperature curves. The results indicated that IMMTCT had a good fluidity and the viscosity declined to 510 mPa∙s, when the temperature was 30℃. However, IMHTCT could achieve the same viscosity-reducing effect when the temperature was 50℃. Therefore, the method of adding organic additives was employed to improve the fluidity of IMHTCT, which was respectively added five organic additives: toluene, oleic acid, stearic acid, ethanol and tetrahydrofuran. The results declared that the viscosity of IMHTCT significantly declined with the increasing of the propotion of five additives. Among them, the viscosity-reducing ratio of oleic acid was always superior to others, which indicated that oleic acid had the best viscosity-reducing effect on IMHTCT.
Key words: coal chemical engeneering; high temperature coal tar; fluidity; additive; viscosity-reducing effect
发表期数: 2018年10月第19期
引用格式: 张磊,周国莉,曲啸洋,等. 内蒙高温煤焦油的流动性能改善研究[J]. 中国科技论文在线精品论文,2018,11(19):1991-1996.
 
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