Catalyst filling material for selective hydrogenation
A hydrogenation catalyst, catalyst technology, applied in the direction of selective hydrorefining, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of affecting reaction efficiency, manufacturing and installation difficulties, cost Advanced problems, to achieve the effect of improving reaction efficiency, avoiding workload, and avoiding the influence of mass transfer
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Embodiment 1
[0028] Pseudo-boehmite is dehydrated at 700°C for 0.5 seconds, and the powder after dehydration is mixed with 5.0% by weight of citric acid, 2.5% by weight of nitric acid and 1.0% by weight of kale powder, and is mixed with a molding machine (model is B3705, produced by American Bonnot Company, the same below) made of 4mm×4mm×1mm (diameter×height×thickness) Raschig ring random packing, then dried at 120°C, and then roasted in dry air at 450°C for 4 hours. filler carrier.
[0029] The calcined filler carrier was prepared with LiNO 3 The solution was immersed for 1 hour, dried at 120°C for 4 hours, and then baked at 900°C for 4 hours; then the prepared Ni(NO 3 ) 2 The solution was soaked for 4 hours, dried at 120° C. for 4 hours, and then calcined at 450° C. for 4 hours to prepare the selective hydrogenation catalyst packing. The composition and properties of the catalyst packing are listed in Table 1.
[0030] The catalyst packing is installed in the reaction section in the...
Embodiment 2
[0032] Dehydrate pseudo-boehmite at 700°C for 0.5 seconds, add 2.5% by weight of citric acid, 5.0% by weight of nitric acid and 1.5% by weight of kale powder to the dehydrated powder, mix evenly, and use a molding machine to make 4mm × 4mm×1mm (diameter×height×thickness) θ-ring bulk packing, then dried at 120°C, and then calcined in dry air at 450°C for 4 hours to obtain a filler carrier.
[0033] The calcined filler carrier was prepared with LiNO 3 The solution was immersed for 1 hour, dried at 120°C for 4 hours, and baked at 900°C for 4 hours; then the prepared Ni(NO 3 ) 2 The solution was soaked for 4 hours, dried at 120°C for 4 hours, and calcined at 450°C for 4 hours to prepare the selective hydrogenation catalyst packing. The composition and properties of the catalyst packing are listed in Table 1.
[0034] The catalyst packing is installed in the reaction section in the middle of the catalytic distillation tower with a diameter of 32 mm, and the loading amount is 100...
Embodiment 3
[0036] Dehydrate pseudo-boehmite at 700°C for 0.5 seconds, add 4.0% by weight of citric acid, 5.0% by weight of nitric acid and 1.0% by weight of kale powder to the dehydrated powder and mix evenly, and use a molding machine to make a corrugated board The structured packing was then dried at 120°C and then calcined in dry air at 450°C for 4 hours to obtain a filler carrier.
[0037] The calcined filler carrier was prepared with LiNO 3 The solution was immersed for 1 hour, dried at 120°C for 4 hours, and calcined at 900°C for 4 hours; then the prepared Ni(NO 3 ) 2 The solution was soaked for 4 hours, dried at 120° C. for 4 hours, and calcined at 450° C. for 4 hours to prepare the selective hydrogenation catalyst packing. The composition and properties of the catalyst packing are listed in Table 1.
[0038] The catalyst packing is installed in the reaction section in the middle of the catalytic distillation tower with a diameter of 32 mm, and the loading amount is 100 grams. ...
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