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Hydrotreating catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, catalyst carrier, etc., can solve problems such as limitation of catalyst activity improvement, influence of active metal dispersion, reduction of catalyst activity, etc. Anti-coking or anti-coking performance, long operating cycle, improving the effect of promotion

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding an organic complexing agent in this method improves the stability of boron, but due to simultaneous impregnation with active metals, boron and active metals compete with the carrier for adsorption, which affects the dispersion of active metals on the carrier.
At the same time, the promotion effect of boron on the conversion of type I active phase to type II active phase with higher activity is bound to be weakened, thereby limiting the improvement of the activity of this type of catalyst.
In addition, since boron is introduced after the alumina carrier is formed, it has little effect on the pore structure and channel of the alumina carrier, and does not play a role in pore expansion; the acid center type of the carrier is not adjusted before loading the active metal; It does not weaken the strong interaction between the active metal and the support, which reduces the activity of the catalyst

Method used

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  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] will contain Al 2 o 3 5g / 100mL AlCl 3 Solution 2000mL with NH 3 10g / 100mL of ammonia water was added dropwise into the gelling reaction tank stirred at a temperature of 60°C, and the pH value was maintained at 7.6, and the reaction contact time was 40min. Aging was performed at a temperature of 70°C and a pH of 8.0. The aging time is 1h. The product was filtered, and then washed with deionized water with a solid-to-liquid volume ratio of 1:20 at a washing temperature of 80° C. for three times. The obtained filter cake was dried at 120° C. for 3 h to obtain aluminum hydroxide.

[0031] Take 100g of the above-mentioned aluminum hydroxide, mix it with 110g of binder prepared by peptizing SB alumina powder with nitric acid, knead for 20min, make a plastic paste, and extrude it through a clover orifice plate with a diameter of 1.4mm. After the wet strip was dried at 130°C for 8h, it was calcined at 520°C for 4h to obtain alumina carrier S-1.

[0032] Get carrier bar ...

Embodiment 2

[0034] After the gelling reaction of Example 1, add the 2 o 3 3g / 100mL organic compound solution 100mL. The boron-containing organic compound solution is prepared by dissolving boric acid in water, and then the molar ratio of boric acid to mannitol is 1:1. The preparation of other aluminum hydroxide is the same as in Example 1 to obtain boron-containing aluminum hydroxide.

[0035] Take 120g of the above-mentioned boron-containing aluminum hydroxide, mix it with 126g of binder prepared by peptizing SB alumina powder with nitric acid, knead for 20min, make a plastic paste, and extrude it through a clover orifice plate with a diameter of 1.4mm. After the wet strip was dried at 130°C for 8h, it was calcined at 520°C for 4h to obtain carrier S-2.

[0036] Get carrier bar 100g after roasting, prepare the aqueous solution containing tungsten and nickel according to the water absorption rate of carrier bar, make the content in the catalyst by oxide weight, MO 3 is 12.2%, and CoO ...

Embodiment 3

[0038] The boron-containing organic compound solution in Example 2 was replaced by the boric acid to ethylene glycol molar ratio of 1.0:1.5, and other aluminum hydroxide was prepared in the same way as in Example 2 to obtain boron-containing aluminum hydroxide.

[0039] Take 110g of the above-mentioned boron-containing aluminum hydroxide, mix it with 118g of binder prepared by peptizing SB alumina powder with nitric acid, knead for 20min, make a plastic paste, and extrude it through a clover orifice plate with a diameter of 1.4mm. After the wet strip was dried at 130°C for 8h, it was calcined at 520°C for 4h to obtain carrier S-3.

[0040] Get carrier bar 100g after roasting, prepare the aqueous solution containing molybdenum, nickel and phosphorus according to the water absorption of carrier bar, make the content in the catalyst by oxide weight, MO 3 is 24.6%, NiO is 4.02%, and P is 1.21%. After drying at 120° C. for 6 hours, the catalyst was calcined at 550° C. for 4 hours ...

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Abstract

The invention discloses a hydrotreating catalyst and a preparation method thereof. In the method, a boron aid is introduced by adding stable boron-containing organic compound solution after aluminium hydroxide is gelatinated, so that the boron aid is uniformly distributed in the catalyst and the activity phase transformation promoting effect of the boron acid is enhanced; moreover, the obtained catalyst has a high pore volume, a large specific surface area, an appropriate pore structure and appropriate acidity, enhances the activity and stability of the catalyst and is particularly suitable for the hydro-denitrogenation process of heavy hydrocarbons.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a hydrogenation treatment catalyst with large pore volume and large specific surface and a preparation method thereof. Background technique [0002] At present, countries all over the world have increasingly stringent requirements on vehicle fuels, especially the content of sulfur, nitrogen and aromatics. However, as the amount of oil extracted increases, it becomes heavier and worse day by day, and the human demand for vehicle fuel continues to increase, which makes it more and more difficult for refineries to process oil. Among them, hydrogenation technology is one of the important technologies for producing qualified fuels. Under the above-mentioned background, the raw materials processed by this technology are also deteriorating and becoming heavier, which constantly puts forward new requirements for hydrogenation catalysts. [0003] Hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/10B01J32/00B01J23/888B01J27/19B01J21/02B01J37/00C10G45/08
Inventor 王敏汤涛凌凤香王丽君孙万付
Owner CHINA PETROLEUM & CHEM CORP
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