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Activation method of catalyst

An activation method and catalyst technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effect of improving the dispersion state and increasing the activity

Inactive Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the deactivated catalyst caused by carbon deposition, its activity can be restored by regeneration, but for the deactivated catalyst caused by metal deposition pollution, it cannot be regenerated to restore its activity, so it can only be discarded.

Method used

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  • Activation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take a deactivated hydrotreating catalyst with a carbon deposit of 4.6%, and perform charcoal regeneration treatment under an oxygen-containing atmosphere. Take 500mL deactivated catalyst, raise the temperature to 500°C at a heating rate of 3°C / min, and keep the temperature at 500°C for 3 hours. The obtained sample is named C1, and its carbon content is 0.15%, MoO 3 The NiO content is 21.4%, and the NiO content is 3.6%.

[0023] Regenerant C1 was activated with ammonium bicarbonate and pentanedione. Take the mixed solution of ammonium bicarbonate and pentanedione to spray and immerse C1 in an equal volume. The molar ratio of ammonium bicarbonate and pentanedione in the solution to the total metal atoms on the regeneration agent is 0.4:0.08:1. After the sample is placed for 8 hours, 120 °C for 4 hours, and the obtained catalyst was designated as C1-1.

Embodiment 2

[0025]Activate the regenerant C1 with ammonia water, mercaptopropionic acid and ethylene glycol. Spray and immerse C1 in an equal volume of ammonia water solution, wherein the molar ratio of ammonia water to the total metal atoms on the regenerant is 0.8:1. After the sample is left for 18 hours, it is dried at 120°C for 2 hours. The obtained sample is named C1-2. Take an equal volume of mixed solution of mercaptopropionic acid and ethylene glycol and impregnate C1-2, wherein the molar ratio of mercaptopropionic acid and ethylene glycol to the total metal atoms on C1-2 is 0.1:0.3:1, and place the sample at 80°C for 4 After 1 hour, it was dried at 120°C for 4 hours, and the obtained catalyst was designated as C1-3.

Embodiment 3

[0031] Catalyst C2 is activated with ethanolamine and citric acid. Take the mixed solution of ethanolamine and citric acid and spray and immerse C2 in an equal volume. The molar ratio of ethanolamine and citric acid in the solution to the total metal atoms on the catalyst is 0.1:0.6:1. After the sample is left for 8 hours, it is dried at 120°C for 4 hours to obtain The catalysts are respectively designated as C2-1.

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Abstract

The invention discloses an activation method of a catalyst which includes VIB group metal component and VIII group metal component. The metal components exist as the form of oxidation state. The catalyst contacts with alkaline matter containing solution and organic additive solution. At last, activated catalysts is obtained by thermal treatment. Compared with the existing technologies, the method provided by the invention can effectively enhance activity of catalyst.

Description

technical field [0001] The invention relates to a method for activating a catalyst, in particular to a method for regenerating and activating a carbon-deactivated hydrogenation treatment catalyst. Background technique [0002] Hydroprocessing is a very important process for converting crude oil into high-value products, and its core is a hydroprocessing catalyst. In order to improve the activity of the catalyst, people have prepared type II active phase catalysts with high latent activity of the active center. The interaction between the active metal and the support is low, so it is easier to completely vulcanize, and it is stacked (stacked) MoS 2 The structure is an active phase with high sulfur coordination, which is usually stacked (laminated) by larger sheets and is not connected to the carrier. In the preparation process of the type II active phase catalyst, the active hydrogenation metal components are not converted into oxides, but are directly sulfided in the form o...

Claims

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Application Information

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IPC IPC(8): B01J23/94B01J38/64B01J38/66B01J38/50B01J38/52
Inventor 杨占林姜虹彭绍忠王继锋唐兆吉魏登凌温德荣
Owner CHINA PETROLEUM & CHEM CORP
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