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Preparation method of hydrocarbon hydrotreatment catalyst

A hydrotreating and catalyst technology, applied in refining to remove heteroatoms, etc., can solve the problems of lower performance, uneven distribution of titanium and silicon, and affect the particle size of aluminum hydroxide, and achieve improved catalyst performance and uniform distribution. , the effect of improving utilization

Active Publication Date: 2006-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 1324687A discloses a method for preparing titanium-containing and silicon-containing aluminum hydroxide by adding finely ground metatitanic acid and silicon-containing compound solution by carbonization method. Although the environmental pollution is reduced, due to the addition of solid particles (although the particle size is less than 65 μm) in the When sodium metaaluminate solution reacts with carbon dioxide to form a gel, aggregates will be produced, which will affect the particle size of aluminum hydroxide, and the distribution of titanium and silicon in aluminum hydroxide will not be uniform, which will reduce its performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The concentration is 30g Al 2 o 3 / l, 2000mL of a sodium metaaluminate solution with an atomic ratio of Na to Al of 1.4 is placed in a reactor at a temperature of 25°C, and carbon dioxide gas with a concentration of 40v% is fed into it, and the concentration is added dropwise under stirring while passing through carbon dioxide. 50g TiO 2 The titanium trichloride solution 140ml of / l, when the slurry pH value is 11, the titanium trichloride solution is added dropwise, stops leading carbon dioxide gas when the slurry pH value is 10. The slurry was aged for 1.0 hour. Then filter and wash with deionized water until the carrier contains Na + When it is 3 The concentration is 30.0wt%, the solution contains NH 3 It is 10wt%, fully mixed until the lye wets the aluminum hydroxide powder, then adds 36g of acidic solution, containing Ni(NO 3 ) 2 16.2wt%, Co(NO 3 ) 2 16.2wt%, the solution contains 17wt% acetic acid, fully kneaded to a plastic body, extruded into a four-le...

Embodiment 2

[0020] Compared with Example 1, the sodium metaaluminate solution concentration is changed to 20g Al 2 o 3 / l, dropwise add 92ml of titanium salt solution of the same concentration, MoO 3 The concentration was changed to 46.0%, Ni(NO 3 ) 2 The concentration was changed to 24.8%, Co(NO 3 ) 2 The concentration of the catalyst is changed to 24.8%, and other implementation conditions are unchanged, both in this example catalyst B, its properties are shown in Table 1.

Embodiment 3

[0022] The titanium trichloride solution in Example 1 was added by spraying, and the other implementation conditions remained unchanged, that is, Catalyst C in this example, and its properties are shown in Table 1.

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Abstract

The invention relates to a preparation method for a catalyst to hydrotreat hydrocarbons, which comprises gama- Al2O3 as carrier, metal from VIB group and VIII group as active constituents, and Ti as active adjuvant. The prepraration method comprises: adding titanate solution to bring said Ti during the gelatinization for preparing aluminum hydroxide; adding basic solution contained Mo or W into the dried aluminum hydroxide powder, mixing till the powder wet fully by solution; adding acid solution contained Co or Ni, mixing till plastic, extruding to form, drying, baking, and obtaining the catalyst. This invention improves the catalyst property obviously.

Description

technical field [0001] The invention relates to a preparation method of a hydrocarbon hydrogenation treatment catalyst, in particular to a preparation method of a hydrocarbon hydrogenation desulfurization catalyst. Background technique [0002] Hydroprocessing is an important process technology in hydrocarbon processing, mainly including hydrodesulfurization, hydrodenitrogenation, hydrocracking, etc. The key to hydroprocessing technology lies in the catalyst. At present, most catalysts for hydrocarbon hydroprocessing are alumina The carrier uses Mo and / or W and Ni and / or Co as active components. In order to achieve maximum economic benefit, improving catalyst performance and reducing cost are the goals pursued in this field. [0003] Generally, simplifying the catalyst preparation process can greatly reduce the production cost of the catalyst, such as US Patent 4,443,558, which uses a complete kneading method instead of the "impregnation method" or "mixed impregnation combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
Inventor 蒋绍洋吴国林王刚赵愉生孙素华陈金汤
Owner CHINA PETROLEUM & CHEM CORP
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