摘要
以高温煤焦油和长焰煤为主要原料,研究了高温煤焦油作为溶剂进行煤油共处理时的反应特性.通过热天平实验,评价了煤和高温煤焦油的热解性能,在500mL机械搅拌式高压釜上实验考察了不同温度点下的釜内压力变化和产物组成变化情况并分析了原因.结果表明,不同反应温度下釜内压力变化趋势相同,反应主要分为快速加氢、平衡裂解和降速缩聚三个阶段.研究了煤焦油预加氢前后氢分布变化对供氢性能的影响.结果表明,预加氢后的高温煤焦油结构发生明显变化,Hα和Hβ含量提高,通过高压釜实验验证,供氢性能提高,促进了加氢裂化反应,油收率提高2%.
Using high temperature coal tar and long flame coal as the main raw material, the paper studied the hydrogenation reaction characteristics of coal processing with tar, and evaluated the pyrolysis properties of coal and high temperature coal tar by TG experiment. Using 500 mL mechanical agitator autoclave experiment, the internal pressure changing under different reaction temperature was studied and the reason was analyzed. The results showed that the internal pressure had the same change trend under different reaction temperature and the reaction was mainly divided into rapidhydrogenation reaction, equilibrium cleavage reaction and speed reducing condensation reaction three stages. The experiment studied the effect of hydrogen distribution changing before and after hydrogenation on the hydrogen donor capacity. The results showed that high temperature coal tar structure altered obviously after prehydrogenation as the content of Hα and Hβ improved. The coal tar performed better as hydrogen donor and promoted the hydrocracking reaction so that the oil yield increased 2 % through autoclave experiment validation.
出处
《煤炭转化》
CAS
CSCD
北大核心
2015年第2期49-52,57,共5页
Coal Conversion
基金
国家国际科技合作专项项目(2013DFA61660)
国家高技术研究发展计划(863)项目(2011AA05A203-4)
关键词
煤液化
煤油共处理
协同效应
高温煤焦油
供氢溶剂
预加氢
coal liquefaction, coal-oil co-processing, synergistic effect, high temperature coal tar, hydrogen-donor solvent, prehydrogenation
