Hydrotreating catalyst preparation method
A hydrogenation treatment and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems of excessive temperature rise and shorten the start-up time, so as to achieve sufficient vulcanization and shorten the start-up time , good effect of metal dispersion
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Embodiment 1
[0060] Example 1 Preparation of Hydrotreating Catalyst A
[0061] Weigh 32.5g of ammonium molybdate, 17.4g of nickel nitrate, and 50mL of ammonia water, and mix them with deionized water to 100mL to obtain solution I. Dissolve 32.8 g of 2,4,6-trimercapto-s-triazine triammonium salt in 50 mL of water to obtain solution II. Weigh 84g of macroporous pseudo-boehmite (73wt% on a dry basis) and 24mL of silica gel (containing 30wt% silicon dioxide), put them into 1L of water, stir vigorously for 20min, add solutions I and II side-by-side, and then After stirring for another 30 min, wash and filter with suction. The filter cake obtained by suction filtration was heat-treated at a low temperature of 80° C. for 3 hours. After crushing the filter cake, add 3 g of scallop powder and mix evenly, then mix 42 g of small-pore alumina with 3 g of citric acid, 10 mL of nitric acid (concentration 30 wt%), and 120 mL of deionized water as a binder. After rolling for 20 minutes, squeeze Extrude...
Embodiment 2
[0062] Example 2 Preparation of Hydrotreating Catalyst B
[0063] Take 23.5g of molybdenum oxide, 6.4g of basic nickel carbonate, 1.4mL of phosphoric acid, and 60mL of deionized water and boil for 1 hour to obtain solution I. Weigh 41 g of 2,4-dimercapto-s-triazine diammonium salt and dissolve it in 100 mL of acetone solution to obtain solution II. Weigh macroporous pseudo-boehmite (73wt% on a dry basis) 72g, zirconium oxychloride 12g and water-soluble silicone oil 20g, put into 1L water, after vigorously stirring for 20min, solution 1 is dripped into the slurry and stirred for 10min, then Then drop the solution II into the slurry, stir vigorously during the dropping, then stir for 30 minutes, wash, and filter with suction. The filter cake obtained by suction filtration was heat-treated at a low temperature of 80° C. for 3 hours. After crushing the filter cake, add 3 g of scallop powder, then mix 56 g of small-pore alumina with 3 g of citric acid, 10 mL of nitric acid (conce...
Embodiment 3
[0064] Example 3 Preparation of Hydrotreating Catalyst C
[0065]The raw materials and methods of this example are the same as those of Example 1, the difference is that this example uses 76.5 g of 2,4,6-trimercapto-s-triazine monoammonium salt to replace the 2,4,6-triazine monoammonium salt in Example 1. Mercapto-s-triazine triammonium salt, the hydrogenation active metal content in solution III accounts for 25wt% of the total hydrogenation active metal content of solution I and solution III in terms of metal oxides, and the others are the same as in Example 1 to obtain hydrogenation treatment Catalyst C, the main physical properties are shown in Table 1.
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