Hydrocracking catalyst containing mesoporous-microporous molecular sieve and preparation method of catalyst
The technology of microporous molecular sieve and mesoporous molecular sieve is applied in the field of hydrocracking catalyst and its preparation, which can solve the problem of low quality of tail oil, and achieve the effects of low BMCI value, high activity and high selectivity of tail oil.
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[0033] Example 1
[0034] Dissolve 925 g of water glass and 230 g of sodium hydroxide in water and stir. Weigh about 180 g of aluminum sulfate octahydrate crystals, dissolve them in 400 mL of water, and add them to the flask. Stir for 40 minutes. Put it in a 60℃ water bath and age for 12 hours.
[0035] Weigh about 200g of P123 and dissolve it in 7500mL of water. Stir in a water bath at 25°C. Add 30 mL of 6mol / L sulfuric acid solution, adjust the pH to about 1.5, and continue stirring.
[0036] Weigh about 1500g of the aging solution, add 30ml of 6mol / L sulfuric acid solution, and assemble for 20 hours. Move to a crystallization kettle lined with polytetrafluoroethylene, crystallize at 120°C for 24 hours, wash and filter, and dry at 80°C for 5 hours. Firing at 550°C for 4 hours. The number is MEY-1.
Example Embodiment
[0037] Example 2
[0038] Dissolve 500 g of sodium silicate and 200 g of sodium hydroxide in water and stir. Weigh about 100 g of sodium metaaluminate, dissolve it in 400 mL of water, and add it to the flask. Stir for 40 minutes. Put it in a water bath at 90°C and age for 10 hours.
[0039] Weigh about 300g of P123 and dissolve it in 7500mL of water. Stir in a water bath at 25°C. Add 30 mL of 6mol / L sulfuric acid solution, adjust the pH to about 1.5, and continue stirring.
[0040] Weigh about 1000g of aging solution, add 20ml of 6mol / L sulfuric acid solution, and assemble for 20 hours. Move to a crystallization kettle lined with polytetrafluoroethylene, crystallize at 120°C for 24 hours, wash and filter, and dry at 80°C for 5 hours. Firing at 550°C for 4 hours. The number is MEY-2.
[0041] The properties of the mesoporous molecular sieves synthesized in Example 1 and Example 2 are shown in Table 1.
Example Embodiment
[0042] Example 3
[0043] Combine 102g MEY-1 molecular sieve (dry basis 98.3wt%), 83.5g macroporous alumina (pore volume 1.20ml / g, specific surface area 267.8m 2 / g, dry basis 71.85wt%), 160 grams of binder (dry basis 25wt%, the mass ratio of nitric acid and small pore alumina is 15%) and 4g sesame powder are added to the roller compactor and mixed, add water, and After pressing into a paste, extruding the strips, the extruded strips are dried at 120°C for 4 hours, and then calcined in a muffle furnace at 550°C for 4 hours to prepare the carrier.
[0044] Weigh 50g of the prepared carrier, prepare a certain amount of impregnation solution containing tungsten and nickel, and impregnate in equal volume. After immersing for 2 hours and drying at 120°C for 4 hours, it is calcined in a muffle furnace at 550°C for 4 hours to prepare catalyst C1.
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