Process for the preparation of hydrotreating catalysts
A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbon oil treatment, etc., can solve the problems of catalyst pore blockage, catalyst deactivation, etc., to achieve guaranteed Activity, prolonging the operation cycle, and improving the effect of action
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Embodiment 1
[0036] (1) Weigh 300 grams of pseudo-boehmite (self-made by the aluminum sulfate method, dry weight content is 70 wt%), 7 grams of carbon black powder, and 1 gram of succulent powder. The aqueous solution of 1 g acetic acid was kneaded, extruded into strips, the molded product was dried at 140 °C for 6 hours, and the dried product was calcined at 750 °C for 5 hours to obtain a macroporous alumina carrier. The properties of the macroporous alumina carrier are as follows: the specific surface area is 176 m 2 / g, the pore volume is 0.81mL / g, and the pore distribution is as follows: the pore volume of pores with a pore diameter of less than 8nm accounts for 26% of the total pore volume, and the pore volume of pores with a pore diameter of 8-20nm accounts for 31% of the total pore volume. The pore volume of pores above 100 nm accounts for 4% of the total pore volume, and the pores above 1000 nm account for 0.8% of the total pore volume.
[0037] (2) Weigh 100 grams of the macroporo...
Embodiment 2
[0041] Same as Example 1, except step (2) MoO in the active metal impregnation solution 3 The concentration is 2.9g / 100ml, the NiO concentration is 0.83g / 100ml, and the amount of the active metal impregnation solution is 7.3ml; the amount of ammonium bicarbonate added in step (3) is 265 grams, the sealing pretreatment temperature is 80 ° C, and the treatment time is After 4 hours, the heat treatment temperature was 130° C., and the treatment time was 6.5 hours, an alumina carrier S-2 was prepared. The properties of the carrier are shown in Table 1. Step (4) MoO in active metal impregnation solution 3 The concentration of NiO is 8.51g / 100ml, and the concentration of NiO is 2.85g / 100ml to prepare hydrotreating catalyst C2. The content of molybdenum oxide in the catalyst is 8.71wt%, and the content of nickel oxide is 2.85wt%.
Embodiment 3
[0043] Same as Example 1, except step (2) MoO in the active metal impregnation solution 3 The concentration is 2.6g / 100ml, the NiO concentration is 1.1g / 100ml, and the amount of active metal impregnation solution is 9.1ml; in step (3), the amount of ammonium bicarbonate added is 243 grams, the heat treatment temperature is 150 ℃, and the treatment time is 4 hours , the alumina carrier S-3 was obtained, and the properties of the carrier are shown in Table 1. Step (4) MoO in active metal impregnation solution 3 The concentration of NiO is 8.84g / 100ml, and the concentration of NiO is 2.79g / 100ml to prepare the treatment catalyst C3. The content of molybdenum oxide in the catalyst is 9.03wt%, and the content of nickel oxide is 2.91wt%.
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