Coal liquefied oil boiling bed hydrogenation treatment catalyst and preparation method thereof
A technology for coal liquefied oil and hydrotreating, which is applied in refining to remove heteroatoms, etc., can solve the influence of catalyst hydrogenation activity and stability, and does not propose problems such as increasing catalyst strength and catalyst bed pressure drop, etc. Effects of hydrogen activity and stability, thin and dense pore walls, improved mechanical strength and wear resistance
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Embodiment 1
[0038] Preparation of modified alumina G-1
[0039] Take the filter cake after washing the alumina precursor prepared by the carbonization method, measure its dry basis as 30wt%, take 1500 grams of the filter cake, add 2.5 liters of deionized water, make a slurry, heat up to 65 ° C, stir for 1 hour, add 90 gram of 85m% phosphoric acid solution, filtered to obtain a filter cake, added 2.0 liters of deionized water, beating, heated to 70 ° C, and added 86 grams of boric acid, and with a concentration of 10gNH 3 / 100ml of ammonia solution to adjust the pH value of the solution to 6, stir for 1 hour, filter and dry at 110°C for 4 hours, the sample is G-1, and its physical and chemical properties are shown in Table 1.
Embodiment 2
[0041] Preparation of modified alumina G-2.
[0042] Take 800 grams of filter cake after washing the aluminum oxide precursor prepared by the aluminum sulfate method, the dry basis is 30wt%, add 3 liters of deionized water, stir evenly, heat up to 85 ° C, and add 53 grams of 85m% phosphoric acid solution, filter to obtain Cake, add 2.5 liters of deionized water, make a slurry, heat up to 70 ° C, and add 120 grams of boric acid, and use a concentration of 10 g NH 3 Adjust the pH of the solution to 6.5 per 100ml of ammonia solution, stir for 1 hour, continue stirring for 30 minutes, and dry at 110°C for 4 hours. The physical and chemical properties of sample G-2 are shown in Table 1.
[0043] Table 1 Physicochemical properties of samples
[0044] Example number
Embodiment 3
[0046] Preparation of ebullating bed hydrogenation catalyst C-1 for stable hydrogenation of coal liquefied oil of the present invention.
[0047] With 168 grams of G-1, 18 grams of alumina fiber powder (length 30 microns, diameter 6 microns, specific surface 183m 2 / g, pore volume 0.08ml / g), 19 grams of nano-silica (the sub-pure nano-silica produced by Tianjin Chemical Co., Ltd.), 193.5 grams are made of SB powder (pore volume 0.46ml / g, specific surface area 260m 2 / g), and the binder (30wt% on a dry basis, the acid-aluminum mol ratio is 0.3) prepared by the above-mentioned SB powder, put into a roller compactor, grind to an extrudable paste, extrude, and dry at 110°C for 4 hours , calcined at 550°C for 3 hours, impregnated with the Mo-Ni-P aqueous solution prepared above, filtered off the solution, dried at 110°C for 4 hours, and calcined at 500°C for 3 hours to obtain catalyst C-1. The physical and chemical properties of the catalyst are listed in Table 2.
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