Analysis of the Impact of Optimized Grading of Cracking Catalysts on Hydrogenated Tail Oil
During the 2017 major overhaul of Sinopec Hainan Refining and Chemical Co.,Ltd.(hereinafter referred to as Hainan Refining and Chemical)hydrocracking unit,the original catalysts FF-46 and FC-16B were regenerated outside the reactor and re loaded into the reactor,supplemented with new refining agent FF-66 and cracking agent FC-80.After optimizing and adjusting the catalyst gradation through FRIPP,based on the excellent cyclic hydrocarbon opening and aromatic hydrocarbon hydrogenation saturation characteristics of cracking agent FC-80,the viscosity index of cracked tail oil increased by 20,and the BMCI value(aromatic hydrocarbon index)in the tail oil decreased by 8.However,the pour point of the hydrogenated tail oil increased by 10℃,making it a lubricating base oil.The condensation point of the product after further hydroisomerization dewaxing in the downstream device is below-20℃,and the performance of the product after hydrogenation meets the requirements.
hydrocrackingcatalyst FC-80grading optimizationviscosity indexBMCI value
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