渣油四组分吸附与裂化反应性能研究

Study on the adsorbability and crackability of resid SARA

利用四组分分离装置,在富集一定量四组分的基础上,通过测量四组分在催化剂上饱和吸附量的方法定量表征了四组分的吸附性能。此外,利用小型固定流化床实验装置,在常规反应条件下(反应温度500℃,剂油质量比6,重时空速20h^(-1)),考察了四组分的裂化反应性能。实验结果表明,四组分的吸附性能与裂化反应性能之间的排序存在较大的差异。饱和分裂化反应性能最强,其次为芳香分,胶质和芳香分裂化反应性能较为接近,沥青质最差;相比较裂化反应性能,胶质吸附性能最强,其次是芳香分,饱和分吸附性能最弱。

By using self-made SARA separation device,amounts of SARA were obtained.The adsorbability of SARA was determined by measuring the saturated adsorption amount on the catalyst.The crackability of SARA was carried out in the fixed fulided reactor under conventional reaction conditions（reaction temperature of 500 ℃,catalyst-to-oil weight ratio（CTO）of 6,weight hourly space velocity（WHSV）of 20h^（-1））.The results confirmed that the huge differences are existed between the order of adsorbability and crackability of resid SARA.The crackability of saturate is the best,followed by aromatic;the crackability of resin is close to that of aromatic;the worst is asphaltene.Compared to the crackability of SARA,the resin has the strongest adsorbability,followed by aromatic;the saturate is the weakest.