添加剂对渣油的改性研究

摘要

针对中国石油乌鲁木齐石化公司1号常减压蒸馏装置减压渣油残炭高、流动性差、易生焦的特点,以甲基丙烯酸丁酯、苯乙烯、马来酸酐丙烯酰胺为原料,过氧化苯甲酰为引发剂,通过溶液聚合的方法合成新型的渣油添加剂,并对减压渣油进行了改性,探究渣油与添加剂作用后残炭量、流变性质以及四组分的变化情况,同时分析了添加添加剂前后渣油焦化反应结果.结果表明:渣油添加剂能够降低渣油的残炭,改变其低温流动性,提高渣油胶体体系的稳定性;加入渣油添加剂后,焦化反应后焦炭产率降低2.60百分点,液体收率增加2.06百分点,液体产物中汽油质量分数增加25.4百分点、柴油和蜡油质量分数分别降低17.7百分点和7.7百分点.%The features of vacuum residue from PetroChina Urumqi Petrochemical Company were characterized by high carbon residue,low fluidity and easy coking.A new residue oil additive made from butyl methacrylate(BMA),styrene and maleic anhydride through solution polymerization with benzoyl peroxide as an initiator was added into the residue to investigate the effect on the changes of CCR,fluidity,SARA composition and the coking reaction.The results show that residual oil additive can reduce carbon residue,improve low temperature fluidity and the stability of colloid system of residue oil.Comparing with the blank residue,the conversion rate of residual oil with additive increases by 7.7 percent points,the coking yield decreases by 2.60 percent points.The liquid yield increases 2.06 percent points,among which the yield of gasoline increases by 25.4 percent points,while diesel oil and wax oil decreases by 17.7 percent points and 7.7 percent points,respectively.