| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved flexible method for producing a base oil and a distillate by a hydroisomerization reformation and a subsequent catalytic deparaffinization on a slightly dispersed catalyst, by which the base oil having a greatly high quality, namely a high viscosity index (VI), excellent UV stability and a low pour point is produced from a charged hydrocarbon. SOLUTION: This method for producing a base oil from a charged hydrocarbon comprises the following continuous processes: (a) simultaneously subjecting the charged hydrocarbon and at least a part of n-paraffins contained in the hydrocarbon to a hydroisomerization reformation, wherein the charged hydrocarbon has a sulfur content of <1,000 wt.ppm, a nitrogen content of <200 wt.ppm, a metal content of <50 wt.ppm and an oxygen content of <0.2 wt.%, and wherein the process is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic carrier in an amount of <20% in a dispersed state, and (b) subjecting at least a part of the effluent produced in the process (a) to a catalytic deparaffinization treatment in the presence of a catalyst containing at least one hydrogenation- dehydrogenation component and at least one molecular sieve.
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