Catalyst for preparing etherified benzine by etherifying catalytic cracking benzine, preparation method thereof and application thereof
A catalytic cracking and light gasoline technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as increasing catalyst costs, reduce vapor pressure, increase octane number, and save use Effect
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Embodiment 1
[0045] 45g (NH 4 ) 2 SO 4 Dissolved in 100mL deionized water, 80g amorphous silica-alumina (Qingdao Ocean Chemical Group Co., silica-alumina gel, HY-W type, Al 2 o 3 The content is 17% by weight, SiO 2 The content is 83% by weight and the specific surface area is 534m 2 / g, the pore volume is 0.35mL / g, and the most probable pore diameter is 33.4 ) in it for 2 hours, filtered, dried at 70°C for 1 hour, dried at 90°C for 1 hour, dried at 120°C for 1 hour, then fired at 300°C for 1 hour in an air atmosphere, and then fired at 350°C Calcined at low temperature for 1 hour, at 450° C. for 1 hour, and at 600° C. for 2 hours to obtain 89.1 g of catalyst A1. Measured by chemical analysis method in catalyst A1, sulfur oxides as SO 4 2- The total amount is 10.1% by weight, based on the weight of catalyst A1.
[0046] Cutting the fraction from the initial boiling point to 75°C in catalytic cracking gasoline to obtain light gasoline fraction, wherein the content of olefins is 47....
Embodiment 2
[0051] Add 230g of 25% by weight silica sol solution into a 500mL beaker, add 5% hydrochloric acid solution dropwise at 50°C until the pH value is 4, and age for 2 hours, add 200mL of an aqueous solution containing 85g of aluminum sulfate into the beaker, and heat it at 50°C Stir under low temperature, then adjust the pH value to 9 with ammonia water, age for 3 hours, filter the formed precipitate and wash 5-8 times with 2000mL water, dry at 120°C for 4 hours, and roast at 500°C for 4 hours to obtain 82g of amorphous Si-alumina carrier (Al 2 o 3 The content is 30% by weight, SiO 2 The content is 70% by weight and the specific surface area is 509m 2 / g, the pore volume is 0.34mL / g, and the most probable pore diameter is 35 ).
[0052] 45g (NH 4 ) 2 SO 4 Dissolve in 100 mL of deionized water, impregnate 80 g of the above-prepared amorphous silica-alumina in it for 2 hours, filter, dry at 70 °C for 1 hour, at 90 °C for 1 hour, and at 120 °C for 1 hour, then in In an air ...
Embodiment 3
[0057] 13.5g (NH 4 ) 2 SO 4 Dissolve in 100mL of deionized water, immerse 80g of amorphous silicon aluminum (same as Example 1) in it for 2 hours, filter, dry at 70°C for 1 hour, at 90°C for 1 hour, and at 120°C for 1 hour , and then in an air atmosphere, calcined at 300°C for 1 hour, at 350°C for 1 hour, at 450°C for 1 hour, and at 600°C for 2 hours to obtain 82g of catalyst A3. Measured by chemical analysis method in catalyst A3, sulfur oxides as SO 4 2- 2.5% by weight, based on the weight of catalyst A3.
[0058] Catalyst A3 was used to etherify the light gasoline fraction with an initial boiling point of 75° C. in FCC gasoline, and the other reaction conditions were the same as in Example 1.
[0059] During the process of etherifying light gasoline to prepare etherified light gasoline, the conversion rate of C5 active olefins is 48.8%, and the conversion rate of C6 active olefins is 19%. The content of ether in the etherified light gasoline was 7.4% by weight, and th...
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