c 9 + Process method for producing xylene from heavy aromatics
A technology for heavy aromatic hydrocarbons and process methods, which is applied in the production of bulk chemicals, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. strictness etc.
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Embodiment 1
[0060] Vector preparation
[0061] will Na 2 O is less than 0.05% by weight, SiO 2 / Al 2 O 3 Ammonium ZSM-5 zeolite with a molecular ratio of 80, 66.7 g and Na 2 O less than 0.05 wt% γ-Al 2 O 3 ·H 2 O 57.1 g are uniformly mixed, then add 7 g of nitric acid aqueous solution with a concentration of 65-68 wt%, 2 g of succulent powder and 60-70 g of water, knead evenly, extrude into strips, dry at 120 ° C for 4 hours, and bake at 550 ° C in an air atmosphere After 3 hours, the pellets were cut to obtain a cylindrical carrier with a length of 2 mm and a diameter of 1.5 mm.
[0062]catalyst preparation
[0063] Take 50 grams of carrier, use 35 ml of ammonium molybdate aqueous solution (equivalent to containing MoO 3 1.6 g) impregnated carrier, dried at 120 °C for 4 hours, and calcined at 550 °C for 3 hours to obtain MoO 3 3.1w% catalyst.
[0064] Catalyst Evaluation
[0065] use figure 1 Shown in the technological process, the hydrodealkylation and transalkylation rea...
Embodiment 2
[0075] Vector preparation
[0076] will Na 2 O is less than 0.05% by weight, SiO 2 / Al 2 O 3 Ammonium ZSM-5 zeolite with a molecular ratio of 80, 66.7 g and Na 2 O less than 0.05 wt% γ-Al 2 O 3 ·H 2 O 57.1 g are uniformly mixed, then add 7 g of nitric acid aqueous solution with a concentration of 65-68 wt%, 2 g of succulent powder and 60-70 g of water, knead evenly, extrude into strips, dry at 120 ° C for 4 hours, and bake at 550 ° C in an air atmosphere After 3 hours, the pellets were cut to obtain a cylindrical carrier with a length of 2 mm and a diameter of 1.5 mm.
[0077] catalyst preparation
[0078] Take 50 grams of carrier, use 35 ml of ammonium molybdate aqueous solution (equivalent to containing MoO 3 1.6 g) impregnated carrier, dried at 120 °C for 4 hours, and calcined at 550 °C for 3 hours to obtain MoO 3 3.1w% catalyst.
[0079] Catalyst Evaluation
[0080] use figure 1 Shown in the technological process, the hydrodealkylation and transalkylation re...
Embodiment 3
[0090] Vector preparation
[0091] will Na 2 O is less than 0.05% by weight, SiO 2 / Al 2 O 3 Ammonium beta zeolite 66.7 grams with a molecular ratio of 25 and Na 2 O less than 0.05 wt% γ-Al 2 O 3 ·H 2 O 57.1 g are uniformly mixed, then add 7 g of nitric acid aqueous solution with a concentration of 65-68 wt%, 2 g of succulent powder and 60-70 g of water, knead evenly, extrude into strips, dry at 120 ° C for 4 hours, and bake at 550 ° C in an air atmosphere After 3 hours, the pellets were cut to obtain a cylindrical carrier with a length of 2 mm and a diameter of 1.5 mm.
[0092] catalyst preparation
[0093] 50 g of carrier was taken, impregnated with 35 ml of nickel nitrate aqueous solution (equivalent to 1.3 g of NiO), dried at 120°C for 4 hours, and calcined at 550°C for 3 hours to obtain a catalyst with a NiO content of 2.5w%.
[0094] Catalyst Evaluation
[0095] use figure 1 Shown in the technological process, the hydrodealkylation and transalkylation reactio...
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