一种FCC油浆与煤共处理影响因素研究

摘要

通过高压釜研究了山东某炼厂的催化裂化油浆(FCC油浆)与新疆哈密地区煤共处理效果.结果表明:当煤粉添加量为30％时,油煤浆的黏度已经达到了1 375 mPa·s,远大于煤直接液化中油煤浆的黏度,不利于泵的输送,因此,如何降低油煤浆黏度是煤油共炼技术要解决的重要问题之一;在煤粉添加量为30％～35％、反应温度为450℃、停留时间为2.0h的条件下,FCC油浆与煤共处理的反应效果较好,转化率超过了98％,油产率基本维持在80％;对FCC油浆进行加氢预处理来改善其性质,可显著降低油煤浆的黏度,同时提高了煤粉添加量为40％条件下的煤油共处理效果,使转化率由92.4％上升至96.5％,油产率由71.12％上升至79.19％.%The reaction effect of FCC slurry from a Shandong refining factory and coals from Hami was studied.The results show that when the coal addition reaches 30％,the viscosity of oil-slurry is 1 375 mPa · s,which is much higher than that of oil-slurry produced by directlyliquefied coals,and this is not good for pump transfer.Therefore,how to reduce the viscosity of oil-slurry is one of the important problems that the coal-oil synergistic technology has to solve.When the coal addition is 30％-35％,the reaction temperature is 450 ℃C and the residence time is 2.0 h,better co-processing effects of FCC slurry and coal reactions can be achieved with the conversion of 98％ and oil yield of 80％.With hydrogenation of FCC slurry to improve its quality,the viscosity of oil-slurry can be reduced considerably,and the effects of co-processing can also be ameliorated when the coal addition is 40％.Furthermore,the conversion rises from 92.4％ to 96.5％,and the oil yield increases from 71.12％ to 79.19％.