高温煤焦油悬浮床加氢裂化研究

Study on slurry-bed hydrocracking reactions of high temperature coal tar

利用悬浮床加氢对高温煤焦油进行加氢裂化研究。分析了煤焦油的性质,研究了反应条件对产物分布的影响。结果表明,随着温度的升高和时间的延长,反应裂解程度加深,反应生成更多的气体、石脑油和柴油馏分,同时甲苯不溶物的含量也在增高。反应压力低于15 MPa,提高压力,汽柴油馏分产率提高显著,反应高于15 MPa汽柴油产率提高不明显,甲苯不溶物含量显著提高。

The slurry-bed hydrocracking reactions of the high temperature coal tar is analyzed. The properties of the coal tar and the influence of reaction conditions on product distribution are researched. The results indicate that prolonging reaction time and increasing temperature could enhance the cracking severity, more gas, naphtha fraction and diesel fraction is generated, at the same time, the toluene insoluble content increase. When the reaction pressure is lower than 15 MPa, naphtha fraction and diesel fraction ＇s distribution increase obviously, when the reaction pressure is higher than 15 MPa, naphtha fraction and diesel fraction＇s distribution don＇t change significantly, the toluene insoluble content also increase obviously.