在小型单管固定床加氢装置上,研究中温煤焦油重馏分加氢裂化工艺过程各因素对裂化效果的影响。通过单因素和响应面法对加氢裂化率与工艺条件进行分析、拟合及优化求解得中温煤焦油重馏分加氢裂化的优化条件为:反应压力13.4 MPa,裂化温度682 K,液体体积空速0.30 h-1,氢油体积比1895∶1,煤焦油加氢裂化率为77%~78%。%Analysis and optimization of hydrocracking process conditions for the heavy fraction of medium temperature coal tar in a fixed-bed hydrogenation unit was investigated using single-factor tests and response surface methodology. The optimized process condition was found as: reaction pressure of 13.4 MPa, reaction temperature of 682 K, hydrogen to oil volume ratio of 1895:1 and liquid hourly space velocity of 0.30 h-1, under which the conversion rate of the heavy fraction of coal tar hydrogenation was 77%--78%.
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