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Regenerated catalyst, regeneration method and application of catalyst, and residual oil hydrogenation method

A technology for regenerating catalysts and to-be-generated catalysts, which can be used in catalyst regeneration/reactivation, catalyst activation/preparation, chemical elements of heterogeneous catalysts, etc., and can solve the problem of inability to use residue hydrodesulfurization and carbon residue removal catalyst regeneration, etc. To achieve the effect of good activity and stability

Active Publication Date: 2021-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the prior art, the regeneration method provided by this patent application is only suitable for light distillate oil hydrogenation catalysts, and cannot be applied to the regeneration of residual oil hydrodesulfurization and carbon removal catalysts
[0006] Moreover, the activity and stability of the regenerated catalyst in the prior art all need to be further improved

Method used

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  • Regenerated catalyst, regeneration method and application of catalyst, and residual oil hydrogenation method
  • Regenerated catalyst, regeneration method and application of catalyst, and residual oil hydrogenation method
  • Regenerated catalyst, regeneration method and application of catalyst, and residual oil hydrogenation method

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Embodiment approach

[0039] According to a preferred embodiment of the present invention, the regeneration method of described catalyst comprises the steps:

[0040] Under pretreatment conditions, reacting the spent catalyst with a first oxygen-containing gas; then under regeneration conditions, contacting the pretreated spent catalyst with an oxygen-containing gas;

[0041] The pretreatment conditions include: the temperature is 300-450°C, preferably 320-400°C, the time is 1-8 hours, preferably 3-5 hours, and the oxygen content in the first oxygen-containing gas is not higher than 10% by weight , preferably 2-10% by weight;

[0042] The regeneration conditions include: the regeneration temperature is 530-750°C, and the oxygen content in the oxygen-containing gas is not less than 20% by weight;

[0043] The spent catalyst includes carbon, a support, and a hydrogenation active metal component supported on the support, and the hydrogenation active metal component contains at least one VIB group met...

specific Embodiment approach

[0071] According to a specific embodiment of the present invention, step (1) includes: contacting an inorganic aluminum-containing compound solution, a phosphorus-containing compound, a grain growth regulator, and an acid or a base for precipitation reaction, or, bringing an organic aluminum-containing compound, a The phosphorus compound, the grain growth regulator and the water undergo a hydrolysis reaction; the pH of the precipitation reaction or the hydrolysis reaction is controlled to be 4-7.

[0072] According to a preferred embodiment of the present invention, the precipitation reaction or the hydrolysis reaction in step (1) is carried out in the presence of a grain growth regulator and a phosphorus-containing compound at a pH of 4-6.5. Making the precipitation reaction or hydrolysis reaction proceed at the above preferred pH is more conducive to improving the hydrogenation activity of the prepared hydrogenation catalyst in heavy oil hydrogenation.

[0073] In the presen...

Embodiment 1

[0128] This example is used to illustrate the regenerated catalyst and its regeneration method of the present invention.

[0129] Get 1000 grams of raw residue oil hydrogenation catalyst A (the corresponding fresh catalyst is C1) and place it in a tube furnace, and heat it up to 350° C. in flowing air at 3° C. / min. The ratio of oil hydrogenation catalyst A is 4 liters / gram, keep the oxygen content in the air atmosphere at 5wt%, and carry out pretreatment at a constant temperature for 2 hours; then heat up to 600°C at 3°C / min, and control the oxygen content in the air atmosphere to 40wt% , the air flow rate and the ratio of the hydrogenation catalyst A to be raw residue oil are 4 liters / gram, constant temperature for 3h, to obtain the regenerated catalyst R1, and the Q value of R1 measured by ultraviolet-visible light spectroscopy is shown in Table 1. The carbon content of R1 is shown in Table 1.

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Abstract

The invention relates to the technical field of regenerated catalysts, and discloses a regenerated catalyst, a regeneration method and application thereof, and a residual oil hydrogenation method, the catalyst comprises carbon, a carrier and a hydrogenation active metal component loaded on the carrier, the hydrogenation active metal component contains at least one VIB group metal component and at least one VIII group metal component, based on the total amount of the carrier and the hydrogenation active metal component in terms of oxide, the content of the carrier is 30-99 wt%, the content of the VIB group metal component is 0.5-50 wt% in terms of oxide, and the content of the group VIII metal component is 0.5 to 20 weight%; the content of the carbon is less than 3wt% of the content of the carrier; when the regenerated catalyst is measured by diffuse reflection ultraviolet visible spectroscopy (DRUVS), the absorbance at 630 nm and the absorbance at 500 nm are F630 and F500 respectively, and the ratio Q of F630 to F500 is 1-3. The regenerated catalyst provided by the invention has good activity and stability, can be applied to hydrocarbon oil hydrogenation reaction, and is especially suitable for residual oil hydrogenation reaction.

Description

technical field [0001] The invention relates to the technical field of regenerated catalysts, in particular to a regenerated catalyst, a regeneration method and application thereof, and a residue hydrogenation method. Background technique [0002] Residual oil hydrogenation technology can greatly increase the yield of light oil in refining, and convert heavy oil (atmospheric pressure residue or vacuum residue) that accounts for 40%-60% of crude oil into light oil products. In today's increasingly stringent environmental protection requirements, it is very popular. The development of residual oil hydrogenation technology also drives the consumption of catalyst to increase year by year. [0003] The fixed-bed residual oil hydrogenation catalyst adopts a graded system, mainly including protective agent, demetallization agent, desulfurization agent, denitrification agent, carbon residue removal agent, etc. Due to the high content of macromolecular colloids and asphaltenes and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887B01J23/94B01J38/14B01J38/02B01J27/16B01J32/00B01J37/03B01J37/08C10G45/08
CPCB01J23/8877B01J23/002B01J23/94B01J38/14B01J38/02B01J27/16B01J37/033B01J37/082C10G45/08B01J2523/00C10G2300/202C10G2300/1037C10G2300/1077C10G2300/205B01J2523/31B01J2523/51B01J2523/55B01J2523/68B01J2523/847Y02P20/584
Inventor 贾燕子刘滨杨清河赵新强胡大为韩伟邓中活
Owner CHINA PETROLEUM & CHEM CORP
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