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Up-flow residual oil hydrogenation reaction system and residual oil hydrotreatment method

A reaction system, hydrogenation treatment technology, applied in the treatment of hydrocarbon oil, petroleum industry, refining to remove heteroatoms, etc., can solve the problems of difficult temperature control, high hydrogenation activity, long service life, etc., to achieve stable temperature, The effect of raising the reaction temperature and improving the conversion ability

Active Publication Date: 2020-12-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method overcomes the shortcomings of unstable catalyst bed temperature and difficult temperature control in the current upflow reactor, and has good hydrogenation performance and metal removal capacity, and has certain desulfurization and carbon residue and asphaltene conversion capabilities. Make the upflow process obtain the advantages of high hydrogenation activity and long service life

Method used

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  • Up-flow residual oil hydrogenation reaction system and residual oil hydrotreatment method
  • Up-flow residual oil hydrogenation reaction system and residual oil hydrotreatment method
  • Up-flow residual oil hydrogenation reaction system and residual oil hydrotreatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this example, an upflow hydrogenation reactor is used to carry out the residual oil hydrotreating reaction. The upflow reactor is provided with two catalyst beds with a volume ratio of 1:1. Each catalyst bed is filled with 420 mL of catalyst, and the total amount of catalyst loaded is 840 mL. The first catalyst bed uses hydrotreating catalyst FZC-11UA, and the second catalyst bed uses hydrotreating catalyst FZC-10U. The properties of the catalysts are shown in Table 1.

[0046] The feed used is a typical Middle East residual oil, and the hydrofining reaction is carried out in the upflow residual oil hydrogenation reactor, and the upflow hydrogenation oil is obtained after mainly removing impurities such as metals. The main process conditions are shown in Table 2. The properties of the hydrogenated oil obtained in the upflow reactor are shown in Table 3.

[0047] A material distributor and a hydrogen cooling pipe are arranged between the catalyst beds of the upflow ...

Embodiment 2

[0053] In this example, an upflow hydrogenation reactor is used to carry out the residual oil hydrotreating reaction. The upflow reactor is equipped with three catalyst beds. Along the flow direction, the first catalyst bed is filled with 250 mL of catalyst, the second catalyst bed is filled with 300 mL of catalyst, and the third catalyst bed is filled with 350 mL of catalyst. The total amount is 900 mL. The first bed of the upflow reactor adopts the hydrotreating catalyst FZC-11UB, the second bed adopts the hydrotreating catalyst FZC-11UA, and the third bed adopts the hydrotreating catalyst FZC-10U.

[0054] The feed used is a typical Middle East residual oil, and the hydrofining reaction is carried out in the upflow residual oil hydrogenation reactor, and the upflow hydrogenation oil is obtained after mainly removing impurities such as metals. The main process conditions are shown in Table 4. The properties of the hydrogenated oil obtained in the upflow reactor are shown i...

Embodiment 1 and comparative example 1

[0062] Table 2 embodiment 1 and comparative example 1 main process conditions

[0063] project Example 1 Comparative example 1 Upflow Catalyst Number First bed: FZC11UA / Second bed: FZC10U First bed: FZC10U / Second bed: FZC11UA Reaction pressure, MPa 17.0 17.0 Liquid hourly volumetric space velocity, h -1

0.38 0.38 Hydrogen oil volume ratio 300 300 The first bed temperature, ℃ 370 373 Second bed temperature, ℃ 378 380

[0064] Table 3 The feedstock used in Example 1 and Comparative Example 1 and the main properties of the hydrogenated oil

[0065] project Feed 1 Example 1 Comparative example 1 S, wt% 4.17 2.36 2.40 N, μg / g 3332 2353 2421 CCR, wt% 11.63 8.77 8.91 Density (20℃), kg / m 3

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Abstract

The invention discloses an up-flow residual oil hydrogenation reaction system and a residual oil hydrotreatment method. The system comprises at least one up-flow hydrogenation reactor, wherein at least two catalyst bed layers are arranged in each up-flow hydrogenation reactor, and the activity of a hydrotreating catalyst is reduced from high to low along the direction of a liquid-phase reactant flow. The invention also discloses a residual oil hydrotreatment method, which is characterized in that residual oil feed and hydrogen pass through the up-flow residual oil hydrogenation reactor systemdisclosed by the invention to obtain a hydrotreatment product. According to the invention, the method overcomes the defects that the temperature of the catalyst bed layer in the existing up-flow reactor is unstable and is not easy to control, has good hydrogenation performance and capacity of removing metal, and has certain desulfurization and carbon residue and asphaltene conversion capacity, sothat the up-flow process has the advantages of high hydrogenation activity and long service cycle.

Description

technical field [0001] The invention relates to a hydrocarbon feed hydrogenation treatment technology, in particular to an upflow residual oil hydrogenation reaction system and a residue oil hydrogenation treatment 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 heter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
CPCC10G45/08C10G2300/107C10G2300/1077C10G2300/202C10G2300/70
Inventor 刘铁斌朱慧红袁胜华韩坤鹏金建辉
Owner CHINA PETROLEUM & CHEM CORP
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