Residual oil hydrogenation catalyst grading method and residual oil hydrotreatment method
A catalyst and gradation technology, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as low activity and poor activity stability, and achieve Effects of prolonged operation cycle, excellent hydrogenation activity and reaction stability
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[0033] The preparation method of the hydrodemetallization catalyst is not particularly limited in the present invention, as long as the aforementioned specific hydrodemetallization catalyst can be prepared. According to a preferred embodiment provided by the present invention, the preparation method of the hydrodemetallization catalyst comprises:
[0034] (1) mixing pseudo-boehmite with a phosphorus-containing compound, a compound containing additive elements and a compound rich in hydroxyl, and then shaping, drying and roasting to obtain a carrier;
[0035] (2) Loading the hydrogenation active metal component on the carrier, followed by optional drying and roasting;
[0036] Wherein, the amount of the phosphorus-containing compound and the compound containing the promoter element is such that in the prepared hydrodemetallization catalyst, based on the total amount of the support, the content of phosphorus is 0.5-8% by weight in terms of oxides, The content of auxiliary eleme...
preparation example 1
[0089] This preparation example is used to prepare the hydrodemetallization catalyst of the present invention.
[0090] Take by weighing 300 grams of dry rubber powder produced by Changling Catalyst Co., Ltd., mix evenly with 5 gram of kale powder, 5 gram of methyl cellulose, then mix the mixture with 11 grams of ammonium dihydrogen phosphate, 2 gram of hydrofluoric acid at room temperature gram, 360 milliliters of aqueous solution of 15 grams of citric acid are mixed, after continuing kneading to be plastic body on twin-screw extruder, extrude into the trefoil wet bar of ф1.5 millimeter, this wet bar is dried at 600 ℃ after 4 hours at 120 ℃. ℃ for 4 hours to obtain carrier Z1. Table 1 shows the results of determination of alumina content, phosphorus oxide content, fluorine content, specific surface area, pore volume, total amount of hydroxyl groups and content ratio δ of acidic hydroxyl groups and basic hydroxyl groups of Z1.
[0091] Take 100 g of carrier Z1 and use 110 ml ...
preparation example 2
[0096] Take by weighing 300 grams of dry rubber powder produced by Qimao Catalyst Co., Ltd., mix evenly with 6 gram of turnip powder and 8 gram of hydroxypropyl methylcellulose, then at room temperature this mixture is mixed with phosphoric acid 13 grams, ammonium fluoride 8 360 ml of aqueous solution of 20 grams of glucose and 20 grams of glucose were mixed, and after being kneaded into a plastic body on a twin-screw extruder, extruded into a butterfly-shaped wet strip of ф1.6 mm, the wet strip was dried at 120°C for 3 hours and then roasted at 700°C After 3 hours, carrier Z2 was obtained. Table 1 shows the results of determination of alumina content, phosphorus oxide content, fluorine content, specific surface area, pore volume, total amount of hydroxyl groups, and content ratio δ of acidic hydroxyl groups and basic hydroxyl groups of Z2.
[0097] Take 100 g of carrier Z2 and use 110 ml of MoO 3 150 g / L, CoO 30 g / L mixed solution of ammonium molybdate and cobalt nitrate wa...
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Abstract
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