Abstract: FC-86 catalyst has been successfully applied industrially in the hydrocracking unit of a petrochemical enterprise. FC-86 catalyst is prepared by new kneading technology. The creation of high-efficiency DMY molecular sieve and the application of low-cost aluminum oxide simplify the preparation operation unit, improve the amount of L acid and reduce the accumulation density. Comparing the hydrocracking performance of FC-86 catalyst and FC-76 catalyst, it is found that under the premise that the hydrocracking properties of the two are similar, compared with the use cycle of FC-76 catalyst, the yield of heavy nathena using FC-86 catalyst increased by 0.62 percentage point, and the yield of jet fuel decreased by 0.43 percentage point and diesel yield remained equivalent, and the catalyst filling decreased by 3.29 t; at the same time, the latent content of heavy nathra aromatic hydrocarbons decreased by 0.95 percentage point, the diesel cetane index increased by 2.1, the jet fuel smoke point increased by 4.1 mm, and the tail oil quality was basically the same. This shows that the application of FC-86 catalyst can effectively reduce the cost and loading amount of catalyst, and has a good application effect.

Key words: hydrogen cracking, DMY molecular sieve, FC-86 catalyst, industrial applications