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Method for hydrotreating residual oil by using up-flow reactor

A hydrotreating and reactor technology, applied in the field of residual oil hydrotreating, achieves the effects of reducing impact, improving strength and water resistance, and avoiding a rapid increase in pressure drop

Inactive 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

The catalyst is suitable as a hydrodesulfurization catalyst, and it needs to be graded before the hydrodemetallization catalyst to prolong the service life of the catalyst. Therefore, it is not suitable for use in an upflow reactor alone

Method used

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  • Method for hydrotreating residual oil by using up-flow reactor
  • Method for hydrotreating residual oil by using up-flow reactor
  • Method for hydrotreating residual oil by using up-flow reactor

Examples

Experimental program
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Effect test

preparation example Construction

[0050] In the preparation method of the hydrotreating catalyst M of the present invention, the first metal oxide is preferably introduced into the carrier, and the first metal source (nickel source) can be introduced in step (1) and / or step (2), and the preferred introduction method is specific The method is as follows: adding a nickel source to the material obtained in step (1) and dissolving it in the material. The nickel source can be a soluble nickel salt, wherein the soluble nickel salt can be one or more of nickel nitrate, nickel sulfate, nickel chloride, preferably nickel nitrate.

[0051] In the preparation method of the hydroprocessing catalyst M of the present invention, the silicon source described in step (1) is one or more of water glass and silica sol, wherein the mass content of silicon is 20% to 40% in terms of silicon oxide , preferably 25% to 35%; the acid peptizer is one or more of nitric acid, formic acid, acetic acid, citric acid, preferably nitric acid, a...

Embodiment 1

[0066] 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.

[0067] 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

[0072] The preparation process was as in Example 1, except that the amount of nickel nitrate was increased, and the molar ratio of nickel oxide and alumina in the carrier was controlled to be 0.10:1. The properties of the prepared catalyst carrier B and catalyst M2 are shown in Table 1.

[0073] 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.

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Abstract

The invention discloses a method for hydrotreating residual oil by using up-flow reactors. According to the method, at least one up-flow hydrogenation reactor is adopted, wherein at least one hydrotreating catalyst M is adopted; a carrier of the catalyst M is spherical; the diameter is 2.5-8.0 mm; wherein 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 outside to 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 sphere of the carrier, the area of the total bottom surface of the large pore channels is 5%-50% of the surface area of the sphere, 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 sphere of the carrier. According to the method, the hydrotreating catalyst M is adopted, is used in the residual oil hydrotreating process, has the advantages of high porosity, good permeability, reduced bed pressure and uniform material distribution, is especially suitable for the up-flow residual oil hydrotreating process, and has the characteristics of high hydrogenation activity, long service cycle and the like.

Description

technical field [0001] The invention belongs to the technical field of residual oil hydrogenation, and in particular relates to a hydrogenation treatment method for heavy and low-quality residual oil by using an upflow reactor. 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 heteroat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04B01J8/02B01J35/04B01J35/10B01J27/19
CPCC10G45/04B01J8/0278B01J8/0292B01J8/0242B01J8/0449B01J27/19C10G2300/202C10G2300/205C10G2300/70C10G2300/1077C10G2300/107C10G2300/1037B01J2208/00539C10G2300/4006C10G2300/4012C10G2300/4018B01J35/56B01J35/60
Inventor 耿新国王志武刘铁斌翁延博李洪广金建辉
Owner CHINA PETROLEUM & CHEM CORP
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