Preparation method of hydrogenation catalyst

A hydrogenation treatment and catalyst technology, which is applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problem of catalyst acidity and weak comprehensive adjustment of active phase, reduced utilization rate of additives, and influence on comprehensive performance of catalysts and other problems, to achieve the effect of reasonable acidity and acidity distribution, and improve performance

Active Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned prior art uses co-precipitation method or adding additives during molding. The former will cause active metals and Si and other additives to enter the bulk phase during the co-precipitation process, and multiple substances are precipitated at the same time. The same precipitation conditions cannot be simultaneously The best precipitation conditions for a variety of substances, and the additives have no selectivity to the formation of the active metal active p

Method used

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preparation example Construction

[0023] According to the preparation method of the modified alumina-based carrier provided by the present invention, it can specifically adopt the following steps:

[0024] 1. Prepare the soluble zirconium-containing compound into solution A, wherein the concentration of the zirconium-containing compound is 0.1g / 100mL~24g / 100mL in terms of zirconia;

[0025] 2. Prepare water-soluble silicone oil into solution B, wherein the concentration of water-soluble silicone oil is 0.1g / 100mL~20g / 100mL in terms of silicon oxide;

[0026] 3. Mix soluble zirconium-containing compound and water-soluble silicone oil to prepare solution C, wherein the concentration of zirconium-containing compound is 0.1g / 100mL~12g / 100mL in terms of zirconia, and the concentration of water-soluble silicone oil is 0.1g / 100mL~ in terms of silicon oxide 10g / 100mL;

[0027] 4. Use at least one of the following methods to introduce water-soluble silicone oil and zirconium-containing compounds onto the alumina-based...

Embodiment 1

[0047] Take 3800g of macroporous aluminum hydroxide dry rubber powder, 200g of SB powder, add 160g of citric acid and 160g of safflower powder, and mix well. Then uniformly add 2900 g of dilute nitric acid aqueous solution, wherein the concentration of nitric acid is 2.9 wt%. The material was kneaded for 15 minutes, then rolled for 20 minutes, and extruded with a clover orifice plate with a diameter of 1.7mm. Dry at 120°C for 4h and then bake at 500°C for 4h. The calcined carrier is marked as Z.

[0048] The physical and chemical properties of alumina carrier Z are shown in Table 2:

[0049] Table 2 Physicochemical properties of alumina carrier Z

[0050] project Alumina carrier Z Specific surface area, m 2 / g 297 Pore ​​volume, mL / g 0.66 Pore ​​distribution, %

Embodiment 2

[0052] Weigh 16.5g of zirconium nitrate, add an appropriate amount of deionized water to dissolve, and make the volume 105mL, and obtain solution A1; weigh 10.5g of water-soluble silicone oil, add appropriate amount of deionized water to dissolve, and make the volume 105mL, and obtain solution B1; While stirring, slowly pour 35mL of B1 solution into 35mL of A1 solution, and add an appropriate amount of deionized water to make the final volume 78mL to prepare C1 solution.

[0053] Take 100g of alumina carrier Z, spray the solution C1 evenly on the alumina carrier, after curing for 10 hours, heat-treat at 110°C for 2h and 240°C for 3h to obtain the modified carrier S1.

[0054] Take 100g of alumina carrier Z, dilute 35mL solution B1 to 78mL with deionized water, spray evenly on the carrier Z, keep healthy for 10 hours, heat-treat at 100°C for 2 hours, then dilute 35mL solution B1 to 76mL with deionized water, and uniformly Sprayed on the carrier, after curing for 3 hours, heat t...

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Abstract

The invention discloses a preparation method of a hydrogenation catalyst. The preparation method comprises steps of preparation of a modified aluminium oxide-based carrier, and loading of a hydrogenation active metal; in the step of preparation of the modified aluminium oxide-based carrier, water soluble silicone oil and a soluble zirconium-containing compound are introduced into an aluminium oxide-based carrier successively or simultaneously, and the modified aluminium oxide-based carrier is obtained via heat treatment. The preparation method is capable of adjusting distribution of acid centers and hydrogenation active centers, achieving coordination effects, and improving comprehensive performance of the hydrogenation catalyst.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation treatment catalyst, in particular to a preparation method suitable for a heavy distillate oil hydrogenation treatment catalyst. Background technique [0002] Most supported catalysts are prepared by impregnation method, such as various hydrogenation catalysts. Alumina is often used as a carrier material for this type of catalyst. but pure Al 2 o 3 The interaction force between the active metal on the surface and the carrier is relatively large, and it is easy to form inactive species (such as the formation of nickel-aluminum spinel), and it is difficult to completely vulcanize to form a type II active phase with high hydrogenation activity. At the same time, the acidity of the catalyst surface has a great influence on the activity of the hydrogenation catalyst. The removal of heteroatoms in the raw material requires the catalyst to have hydrogenolysis activity, which occurs on the acid...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J32/00C10G45/08
Inventor 徐黎明高玉兰
Owner CHINA PETROLEUM & CHEM CORP
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