Cracking method for hydrogenation of carbon nine and above hydrocarbons
A technology for cracking carbon and catalysts, which is applied in the hydrogenation field of cracking carbon nine and above hydrocarbons, and can solve problems such as high olefin content and poor catalyst stability
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Embodiment 1
[0022] Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 30 grams of δ-alumina, and 9 grams of scallop powder, mix them, and then add 20 grams of polyvinyl alcohol-containing solution (mass concentration is 5%), the concentration 4.0 grams of 68% nitric acid, 300 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and the wet strip was passed through 120 o C dried for 4 hours at 750 o C was calcined for 4 hours to obtain carrier Z1. Mix nickel carbonate: ammonium carbonate: ammonia water = 1.0: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 10%. Put the carrier Z1 in the solution for equal impregnation, 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst A1. The catalyst composition is shown in Table 1.
[0023] With nitric acid in [H + ] / [AlOOH] under the condition that the molar ratio was 0.25, the pseudo-boehmite powder was peptized for 24 hours...
Embodiment 2
[0028] Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 60 grams of δ-alumina, 9 grams of scallop powder, 40 grams of silica sol, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5%) 25 grams, 4.0 grams of nitric acid with a concentration of 68%, 1.5 g of calcium nitrate, 310 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and wet strips after 120 o C dried for 4 hours at 750 o C roasting for 4 hours. Vector Z2 was prepared. Mix ammonium molybdate: nickel carbonate: ammonium carbonate: ammonia water = 0.02: 1.0: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 10% and a molybdenum content of 0.5%, and place the carrier Z2 in the solution Equal impregnation in 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst A2. The catalyst composition is shown in Table 1.
[0029] With nitric acid in [H + ] / [AlOOH] under the c...
Embodiment 3
[0034] Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 80 grams of δ-alumina, 9 grams of scallop powder, 20 grams of silica sol, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5%) 25 grams, 4.0 grams of nitric acid with a concentration of 68%, 0.5 g of magnesium nitrate, 310 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and wet strips after 120 o C dried for 4 hours at 750 o C roasting for 4 hours. Vector Z3 was prepared. Mix nickel carbonate: ammonium carbonate: ammonia water = 1.25: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 13%. Put the carrier Z3 in the solution for equal impregnation, 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst A3. The catalyst composition is shown in Table 1.
[0035] With nitric acid in [H + ] / [AlOOH] under the condition that the molar ratio was 0.25, the pseudo-boehmite p...
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