Method for Lightening Heavy Aromatics to Increase Xylene Production
A technology for heavy aromatics and xylene, applied in chemical instruments and methods, bulk chemical production, organic chemistry, etc., can solve the problem of ineffective treatment of heavy aromatics containing naphthalene series
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Embodiment 1
[0015] Add 60 grams of pseudo-boehmite into a certain amount of dilute nitric acid and Tianqing powder, knead evenly, extrude and shape, roast to make a carrier, cut the pellets and place it in an immersion container. A certain amount of chloroplatinic acid and nickel nitrate are dissolved in water, immersed on the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for 3 hours to prepare catalyst A1.
[0016] 70g Na 2 BETA molecular sieve with an O content of less than 0.5% by weight, 55 grams of pseudo-boehmite and an appropriate amount of Tianqing powder are mixed uniformly, then a certain amount of dilute nitric acid is added to extrude, form, dry, and roast to make a carrier, then cut into pellets. In the dipping container. A certain amount of chloroplatinic acid and stannous chloride are dissolved in water, immersed in the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for 3 hours to prepare catalyst B1.
[0017] Mix 10 grams ...
Embodiment 2
[0019] Add 60 grams of kaolin to a certain amount of dilute nitric acid and Tianqing powder, knead uniformly, extrude into a strip, and roast to form a carrier, cut into pellets and place it in an immersion container. A certain amount of chloroplatinic acid and nickel nitrate are dissolved in water, soaked on the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for 3 hours to prepare catalyst A2.
[0020] 70g Na 2 MOR molecular sieve with an O content of less than 0.5% (weight) is mixed with 55 grams of pseudo-boehmite and an appropriate amount of Tianqing powder, then a certain amount of dilute nitric acid is added, extruded, dried, and roasted to form a carrier. After cutting Place in the dipping container. A certain amount of chloroplatinic acid and stannous chloride are dissolved in water, immersed in the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for 3 hours to prepare catalyst B2.
[0021] Mix 10 grams of catalyst A2 an...
Embodiment 3
[0023] A certain amount of silica sol is added to 60 grams of magnesium oxide, extruded into a rod, and calcined to form a carrier, which is cut into pellets and placed in a dipping container. A certain amount of chloroplatinic acid and nickel nitrate are dissolved in water, soaked on the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for 3 hours to prepare catalyst A3.
[0024] Put 50 grams of Na 2 MOR molecular sieve with O content less than 0.5% (weight), 20 grams of Na 2 ZSM-5 molecular sieve with an O content of less than 0.5% (weight) is mixed with 55 grams of pseudo-boehmite and an appropriate amount of Tianqing powder, and then a certain amount of dilute nitric acid is added, extruded, dried, and roasted to form a carrier. The pellets are placed in a dipping container. A certain amount of chloroplatinic acid and stannous chloride are dissolved in water, immersed in the surface of the carrier, dried at 120°C for 4 hours, and calcined at 500°C for...
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