Residual oil hydrotreatment catalyst carrier, catalyst and preparation method thereof

A technology for catalyst carrier and residual oil hydrogenation, which is applied in the direction of catalyst activation/preparation, catalyst carrier, physical/chemical process catalyst, etc. It can solve the problems of not too many large pores, reduced specific surface area, and reduced desulfurization activity.

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the number of macropores should not be too much, otherwise, the specific surface area will be reduced and the desulfurization activity will be significantly reduced

Method used

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  • Residual oil hydrotreatment catalyst carrier, catalyst and preparation method thereof
  • Residual oil hydrotreatment catalyst carrier, catalyst and preparation method thereof
  • Residual oil hydrotreatment catalyst carrier, catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Take by weighing silicon oxide content and be that 400g of water glass of 30wt% is added in the beaker, start stirring device, slowly add mass concentration in beaker and be the nitric acid solution 150g of 62%, add nickel nitrate again, the pH of water glass solution in the beaker after stirring and dissolving value is 2.0, then add 385.3g pseudo-boehmite (the properties are as follows: pore volume 1.05mL / g, specific surface area is 306m 2 / g, dry basis is 70wt%), control the molar ratio of nickel oxide and aluminum oxide in the carrier to 0.06:1, stir well and then add curing agent urea 35g, after the urea is completely dissolved, add deionized water to make the material in the beaker It is a paste with a certain fluidity, and the solid content is 33% based on silica and alumina.

[0066] The above paste mass is pressed into two identical hemispheres with spherical cavities. Wherein, a guide mold is placed in a hemisphere, and the guide mold is made of wood. The gui...

Embodiment 2

[0071] The preparation process is as in Example 1, except that the amount of nickel nitrate is increased, and the molar ratio of nickel oxide and aluminum oxide in the control carrier is 0.10:1, and the prepared catalyst carrier B and catalyst B C The properties are shown in Table 1, and the catalyst evaluation results are shown in Table 2. Wherein the impurity removal rate of catalyst is measured in reaction 2000h.

[0072] Wherein, the diameter of the obtained catalyst carrier B is 8 mm, the number of conical channels is 40, the height of the conical channels is 3.5 mm, the angle of the apex angle of the conical channels is 15 degrees, and the bottom surface area of ​​the conical channels is the surface area of ​​a sphere 0.43% of , the total area of ​​the conical base is 17% of the surface area of ​​the sphere.

Embodiment 3

[0074] The preparation process is as in Example 1, except that the curing agent urea is changed to add 46.6g of hexamethylenetetraammonium, and the prepared catalyst carrier C and catalyst C C The properties are shown in Table 1, and the catalyst evaluation results are shown in Table 2. Wherein the impurity removal rate of catalyst is measured in reaction 2000h.

[0075] Wherein, the diameter of the obtained catalyst carrier C is 6 mm, the number of conical channels is 40, the height of the conical channels is 2.5 mm, the angle of the apex angle of the conical channels is 25 degrees, and the bottom surface area of ​​the conical channels is the surface area of ​​a sphere 1.17% of that, the total area of ​​the conical base is 46.85% of the surface area of ​​the sphere.

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Abstract

The invention discloses a residual oil hydrotreating catalyst carrier, a catalyst and a preparation method thereof. The residual oil hydrotreating catalyst carrier is spherical; the diameter is 2.5-10.0 mm; the outer surface of the carrier is provided with a plurality of large pore channels which are not communicated; the sectional area of the large pore channels is gradually reduced from outsideto inside along the radial direction; the area of the bottom surface of each large pore channel is 0.05%-5% of the surface area of the spherical carrier, the area of the total bottom surface of the large pore channels is 5%-50% of the surface area of the spherical carrier, and the longest depth of the large pore channels is 30%-99% of the radius of the spherical carrier in terms of the length of the pore channels in the radius direction of the spherical carrier. The catalyst prepared by loading an active metal component on the catalyst carrier is used in the residual oil hydrotreatment process, has the advantages of high porosity, good permeability, reduced bed pressure and uniform material distribution, is especially suitable for the residual oil hydrotreatment process, and has the characteristics of high hydrogenation activity, long service cycle and the like.

Description

technical field [0001] The invention relates to a catalyst carrier for residue oil hydrotreating, a catalyst and a preparation method thereof. Background technique [0002] As crude oil becomes heavier and worse, more and more heavy oil and residual oil need to be processed. The processing of heavy oil and residual oil not only needs to be cracked into products with low boiling points, such as naphtha, middle distillate oil and vacuum gas oil, but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. Among them, the decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; the hydrogenation process includes hydrocracking, hydrofining, hydrotreating, etc. The hydrogenation process can not only hydrogenate and convert residual oil, improve the yield of liquid products, but also remove heteroatoms in it, and the product quality is good, which has obvious advantages. Therefore,...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J27/19B01J35/08B01J35/10C10G45/08
CPCB01J27/19B01J37/0018C10G45/08C10G2300/205B01J35/51B01J35/635B01J35/647B01J35/615
Inventor 耿新国王永林隋宝宽张晓萍袁胜华蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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