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

Active Publication Date: 2017-07-14
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only a small amount of hydrogen sulfide gas is released during the preparation process, which solves the problem of too fast temperature rise in the catalyst vulcanization process, and the catalyst prepared by this method is a fully vulcanized catalyst, which only needs to be heated directly to the reaction temperature when starting up. can greatly shorten the start-up time

Method used

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Examples

Experimental program
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Effect test

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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Abstract

The present invention discloses a hydrotreating catalyst preparation method, which comprises: (1) adding water to a carrier component, and beating to obtain a slurry; (2) respectively or simultaneously adding a solution containing a first hydrogenation activity metal component and an organic compound or an organic compound solution to the slurry, and uniformly stirring; (3) filtering the material obtained in the step (2), washing, and drying to obtain a catalyst intermediate; (4) carrying out mixing kneading on the catalyst intermediate, molding, and drying to obtain a catalyst molding body; and (5) impregnating an impregnating liquid containing a second hydrogenation activity metal component on the catalyst molding body, drying, and calcining under the protection of an inert gas to obtain the hydrotreating catalyst. The catalyst of the present invention has advantages of good metal dispersion, high mechanical strength, and good hydrogenation performance.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst, in particular to a method for preparing a hydrogenation catalyst. Background technique [0002] Conventional hydrogenation catalysts are in the oxidation state, but the active substances in actual use are in the sulfuration state, so the hydrogenation catalysts in the oxidation state need to be pre-sulfurized before being used. The commonly used pre-sulfurization methods are in-vehicle pre-sulfurization and out-of-vehicle pre-sulfurization. The in-vehicle pre-sulfurization is to put the oxidized catalyst into the hydrogenation reactor, and pass hydrogen and sulfidation agent into the reactor during the heating process, so that It generates hydrogen sulfide, which converts the hydrogenation active metal from oxide to sulfide. External pre-sulfurization means that the catalyst is combined with the sulfurizing agent before being loaded into the reactor, and then loaded into the rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J35/10B01J37/08B01J37/02C10G45/08
CPCB01J27/0515B01J35/1019B01J35/1038B01J35/1061B01J37/0203B01J37/086B01J37/088C10G45/08
Inventor 徐黎明高玉兰吕振辉张学辉佟佳孙海
Owner CHINA PETROLEUM & CHEM CORP
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