Hydrogenation method for producing lubricating oil base oil through poor-quality heavy distillate oil
A technology for lubricating base oil and heavy distillate oil, which is applied in hydrotreating process, hydrocarbon oil treatment products, petroleum industry, etc., can solve the problems of unimproved product quality of hydrocracking unit, and reduced equipment investment and operating cost. , to achieve the effect of reducing hydrogen sulfide and ammonia content and increasing hydrogen partial pressure
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Embodiment 1
[0053] use figure 1 As shown in the process flow, the hydrocracking in the third stage is a one-pass process, and all the hydrocracking tail oil undergoes isomerization dewaxing reaction. The first stage is loaded with catalyst A, the second stage is filled with catalyst A, and the third stage is filled with FC-50 catalyst.
[0054] Control the refined nitrogen content in the second stage to 15~25μg / g, and control the single-pass conversion rate of >370°C in the cracking stage to ~70wt%.
Embodiment 2
[0056] use figure 1 Process flow shown. Both the first stage and the second stage are filled with catalyst B. Others are the same as embodiment 1.
Embodiment 3
[0058] use figure 1 Process flow shown. Hydrofinishing catalyst A is used in the first stage, and hydrofinishing catalyst B is used in the second stage. Others are the same as embodiment 1.
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