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Hydrotreatment catalyst, and preparation method and application thereof

A technology for hydrotreating and catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Reduce utilization rate, uniform dispersion of unfavorable additives, etc., to achieve the effect of reasonable distribution of acidity and acidity and improve performance

Active Publication Date: 2017-12-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the above-mentioned prior art, the synergistic effect of organic additives and additives such as Si has not been investigated, and Si additives are added during coprecipitation or molding. The former will cause active metals and additives such as Si to enter during the coprecipitation process. Bulk phase, and multiple substances precipitate at the same time, the same precipitation conditions cannot be the best precipitation conditions for multiple substances at the same time; while the latter adds Si and other additives during kneading molding, which is not conducive to the uniform dispersion of additives, not only the additives The utilization rate is reduced, and the comprehensive adjustment effect on the acidity and activity of the catalyst is weak, which is not conducive to the improvement of the comprehensive performance of the catalyst

Method used

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  • Hydrotreatment catalyst, and preparation method and application thereof

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preparation example Construction

[0034] According to the preparation method of the modified alumina-based carrier provided by the present invention, it can specifically adopt the following steps:

[0035] 1. Prepare the soluble additives into solution A, in which the concentration of additives is 0.1g / 100mL~32g / 100mL in terms of oxides;

[0036] 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;

[0037] 3. Mix soluble additives and water-soluble silicone oil to prepare solution C, wherein the concentration of additives is 0.1g / 100mL~16g / 100mL in terms of oxides, and the concentration of water-soluble silicone oil is 0.1g / 100mL~10g / 100mL;

[0038] 4. Use at least one of the following methods to introduce water-soluble silicone oil and additives onto the alumina-based carrier:

[0039] I. Immerse the alumina-based carrier with solution C, and after curing, obtain a modified alumina-based carrier th...

Embodiment 1

[0048] 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 3.0 wt%. The material was kneaded for 15 minutes, then rolled for 20 minutes, and extruded with a clover orifice plate with a diameter of 1.7 mm. Dry at 120°C for 4h and then bake at 500°C for 4h. The calcined carrier is marked as Z.

[0049] The physical and chemical properties of alumina carrier Z are shown in Table 2:

[0050] Table 2 Physicochemical properties of alumina carrier Z

[0051]

Embodiment 2

[0053] Weigh 33.2 g of aluminum nitrate, add an appropriate amount of deionized water to dissolve, and make the volume 105 mL, and obtain solution A1. Weigh 19.1 g of water-soluble silicone oil A, add an appropriate amount of deionized water to dissolve, and make the volume 105 mL to prepare 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 77mL to prepare C1 solution.

[0054] Take 100g of alumina carrier Z, spray the solution C1 evenly on the alumina carrier, after curing for 10 hours, heat-treat at 100°C for 2h, then heat-treat at 220°C for 2h to obtain the modified carrier S1.

[0055] Take 100g of alumina carrier Z, dilute 35mL of solution B1 to 77mL with deionized water, spray evenly on the carrier Z, keep in good condition for 10 hours, heat-treat at 100°C for 2 hours, then dilute 35mL of solution A1 to 75mL with deionized water, Evenly sprayed on the carrier,...

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Abstract

The invention discloses a hydrotreatment catalyst, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a modified alumina-based carrier by sequentially or simultaneously introducing water-soluble silicon oil and / or a soluble aid into an alumina-based carrier and then carrying out heat treatment; and (2) impregnating the modified alumina-based carrier prepared in the step (1) with group VIB and group VIII active metal components, introducing an organic additive at the same time and carrying out drying without roasting so as to obtain the eventual hydrotreatment catalyst. The method can adjust the distribution of an acid center and a hydrogenation active center to make the acid center and the hydrogenation active center coordinate with each other, thereby improving the comprehensive performance of the hydrotreatment catalyst.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and its preparation method and application, in particular to a hydrogenation treatment catalyst suitable for heavy distillate oil and its preparation method and application. 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 hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883C10G45/08
CPCC10G45/08B01J23/002B01J23/883B01J2523/00C10G2300/70C10G2300/202B01J35/635B01J35/615B01J2523/31B01J2523/41B01J2523/68B01J2523/847B01J2523/48
Inventor 杨占林唐兆吉姜虹彭绍忠王继锋孙立刚王平
Owner CHINA PETROLEUM & CHEM CORP
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