PREPARATION OF HYDRODEWAXING CATALYST AND PERFORMANCE EVALUATION FOR HYDROCRACKING TAIL OIL

Abstract

Abstract: A Ni/Ca /ZSM-5 catalyst which used ZSM-5 molecular sieve as support was prepared. The performance of Ni and Ca modified ZSM-5 as hydrodewaxing catalyst in the melting point, yield and viscosity index of lube base oil was studied using hydrocracking tail oil as feedstock. The results showed that the cracking activity of the hydrodewaxing catalyst decreased and the yield and viscosity index of the lube base oil increased. For hydrocracking tail oil, the optimal reaction conditions were reaction temperature of 310 ℃, LHSV of 3.0 h-1, hydrogen pressure of 15 MPa and hydrogen to oil ratio of 500. Under the optimal conditions, the melting point of the produced lube base oil was －17 ℃, the viscosity index and the yield were 93 and 72%, respectively

Key words: hydrocracking tai oil, ZSM-5 molacular sieve, hydrodewaxing, lube base oil

CLC Number:

References

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