A method for hydrogenation regeneration of waste lubricating oil
A technology for waste lubricating oil and hydrogenation regeneration, which is used in lubricating compositions, hydrotreating processes, chemical instruments and methods, etc. Clogging and other problems, to achieve the effect of reducing capillary pressure, good hydrotreating effect, and high utilization rate
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Embodiment 1
[0042] Preparation of hydrorefining catalyst: ①Weigh 500g of pseudo-boehmite, add 10g of fennel powder, 15g of methyl cellulose, and 15g of acetic acid, mix well, add appropriate amount of deionized water, and knead at room temperature to form. After molding, it was dried at 120°C for 4 hours and calcined at 650°C for 4 hours to obtain a carrier with a specific surface area of 361m 2 / g, the pore volume is 0.93mL / g, and the average pore diameter is 10.4nm. ②Weigh 200g of the catalyst carrier prepared in step (1), spray and soak it with 200mL of Span-80 ethanol solution with a concentration of 0.5g / 100mL, and then vacuum-dry it at 50°C for 5 hours; ③Add ammonium molybdate and nickel nitrate and phosphoric acid are dissolved in water, and then sodium polymethacrylate is added to obtain an impregnation solution, in which the content of molybdenum oxide is 48.7g / 100mL, the content of nickel oxide is 9.4g / 100mL, and the content of phosphorus is 2.1g / 100mL. The content of sodium ...
Embodiment 2
[0044] In the preparation process of the hydrorefining catalyst, the others are the same as in Example 1, except that the content of sodium polymethacrylate in the impregnation solution prepared in step 3 is 1.5g / 100mL in terms of carboxylate, and the soaking time is 3 hours to obtain the hydrorefining catalyst b. The properties of the hydrotreating catalyst B are as follows: the specific surface area is 203m 2 / g, pore volume is 0.54 mL / g, average pore diameter is 8.5nm, active metal dispersion I Mo / I Al is 0.1935, I Ni / I Al is 0.0868, and the composition of hydrorefining catalyst B is as follows by mass: the content of molybdenum oxide is 19.6wt%, the content of nickel oxide is 5.0wt%, and the content of phosphorus is 1.8wt%.
Embodiment 3
[0046] (1) Atmospheric and vacuum distillation of the pretreated raw material waste lubricating oil, and cut out the fraction at 350°C to 450°C. Among them, the sedimentation method is used for pretreatment to filter out solid particles above 25 μm in the waste lubricating oil.
[0047] (2) Put the distilled lubricating oil distillate in step (1) into the protective agent reactor for reaction, wherein the loading volume ratio of γ-alumina and hydrogenation protective agent in the protective agent reactor is 1:1, and the γ-oxidation Aluminum has a specific surface area of 330 m 2 / g. The molybdenum oxide content in the hydrogenation protection agent is 5.2wt%, the nickel oxide content is 1.2wt%, the pore volume is 0.76 mL / g, the average particle diameter is 3mm, and it is in the shape of a toothed ball. The protective agent reactor adopts an upflow type, and its operating conditions are: reaction temperature 290°C, pressure 7.0MPa, liquid hourly volume space velocity 1.0h ...
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