Hydrocarbon oil catalytic cracking catalyst rich in naphthenic cyclic hydrocarbon,preparation method and application method thereof
A technology for catalytic cracking and naphthenic hydrocarbons, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc. rate drop etc.
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[0058] Catalytic cracking catalyst provided by the present invention, a kind of preparation method comprises the following steps: beating natural mineral matter and water, then adding inorganic oxide binder thereinto, stirring to obtain slurry A; Y-type molecular sieve and shape-selective molecular sieve and Water beating to obtain molecular sieve slurry, mixing slurry A and molecular sieve slurry, finally adding boron-aluminum-silicon composite oxide, beating and stirring, to obtain catalyst slurry, and spray-drying catalyst slurry to obtain catalyst microspheres, and the obtained catalyst microspheres were heated at 450 Calcining at -550°C for 0.5-4 hours, preferably 1-3 hours, for example, 2 hours at 500°C, to obtain a catalytic cracking catalyst.
[0059] According to the method for preparing a catalytic cracking catalyst provided by the present invention, one embodiment, the method for preparing a boron-aluminum-silicon composite oxide includes the following steps:
[0060]...
Embodiment 1
[0088] (1) Preparation of boron-aluminum-silicon composite oxide: Add 602g of deionized water to the beaker, then add 94g of SB powder, disperse in the homogenizer for 30min, then add 100mL of slurry dispersed with 53g of boric acid, in the homogenizer Disperse for 20 minutes, and finally add 20 g of hydrochloric acid to acidify to obtain mixture 3, whose pH value is 1.0; add 90 g of silica sol to mixture 3, stir for 30 minutes, dry at 120 ° C for 12 h, and roast at 650 ° C for 4 h to obtain boron-aluminum-silicon composite oxide object, denoted as BAS1. The composition of the boron-aluminum-silicon composite oxide: B 2 o 3 The content is 23.5% by weight, and the silicon oxide content is 21.2% by weight; the content of aluminum oxide is 55.3% by weight, has a rod-like structure, the shortest side of the crystal grain is 10nm, the pore volume is 0.28ml / g, and the pore distribution (in terms of pore diameter 2-100nm Pores as the benchmark): 2-2 / g.
[0089] (2) Catalyst prepa...
Embodiment 2
[0092] (1) Preparation of boron-aluminum-silicon composite oxide: add 302g of deionized water to a beaker, then add 94g of pseudoboehmite dry powder, disperse in a homogenizer for 30min; add 300g of deionized water to another beaker, Then 53g of boric acid was added, heated at 80°C for 30min to dissolve it; then the two slurries were mixed, dispersed in a homogenizer for 20min, and 20g of hydrochloric acid was added for acidification to obtain mixture 3, whose pH value was 2.41. Add 90g of water glass (SiO 2 Concentration 251.3g / L, modulus 3.6), stirring for 30min, drying at 100°C for 24h, and calcination at 800°C for 2h to obtain boron-aluminum-silicon composite oxide, denoted as BAS2. The composition of the boron-aluminum-silicon composite oxide: B 2 o 3 The content is 23.5% by weight, the content of silicon oxide is 21.2% by weight; the content of aluminum oxide is 55.3% by weight, it has a rod-like structure, the shortest side of the crystal grain is 11nm, the pore volum...
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