Regeneration method of hydrogenation catalyst

A hydrogenation catalyst and catalyst technology, which are applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems that the physical and chemical properties and structures of hydrogenation catalysts cannot meet the requirements of industrial production, etc. To achieve the effect of improving catalyst performance, avoiding the formation of hot spots, and having a wide range of applications

Pending Publication Date: 2022-03-04
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the conventional methods of burning sulfur and carbon are adopted in the prior art, and the physical and che

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) After sampling the deactivated sulfided residue hydrogenation catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, the above-mentioned catalyst is immersed in toluene solution, heated to a boiling state of toluene and refluxed to condense for 24 hours, after the extraction is completed, vacuum-dried to obtain deactivated catalyst A1 (in the form of deactivated hydrogenation catalyst A1 Based on the weight of the source fresh catalyst, the content of the active metal molybdenum in terms of oxides is 16%; based on the weight of the source fresh catalyst of the deactivated hydrogenation catalyst, the contained deposition metal iron and vanadium, in terms of metal elemental total content is 1.33%).

[0043] (2) After sampling and taking out the deactivated sulfurized bulk hydrofining catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, immerse the above catalyst in toluene solution, heat to the boiling...

Embodiment 2

[0050] (1) After sampling the deactivated sulfided residue hydrogenation catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, the above-mentioned catalyst is immersed in toluene solution, heated to a boiling state of toluene and refluxed to condense for 24 hours, after the extraction is completed, vacuum-dried to obtain deactivated catalyst A1 (in the form of deactivated hydrogenation catalyst A1 Based on the weight of the source fresh catalyst, the content of the active metal molybdenum in terms of oxides is 16%; based on the weight of the source fresh catalyst of the deactivated hydrogenation catalyst, the contained deposition metal iron and vanadium, in terms of metal elemental total content is 1.33%).

[0051] (2) After sampling and taking out the deactivated sulfurized bulk hydrofining catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, immerse the above catalyst in toluene solution, heat to the boiling...

Embodiment 3

[0058] (1) After sampling the deactivated sulfided residue hydrogenation catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, the above-mentioned catalyst is immersed in toluene solution, heated to a boiling state of toluene and refluxed to condense for 24 hours, after the extraction is completed, vacuum-dried to obtain deactivated catalyst A1 (in the form of deactivated hydrogenation catalyst A1 Based on the weight of the source fresh catalyst, the content of the active metal molybdenum in terms of oxides is 16%; based on the weight of the source fresh catalyst of the deactivated hydrogenation catalyst, the contained deposition metal iron and vanadium, in terms of metal elemental total content is 1.33%).

[0059] (2) After sampling and taking out the deactivated sulfurized bulk hydrofining catalyst from the reaction device, seal it with ethanol liquid. Using a fat extractor, immerse the above catalyst in toluene solution, heat to the boiling...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a regeneration method of a hydrogenation catalyst. The method comprises the following steps: (1) mixing inactivated hydrogenation catalysts A1 and A2, soaking the mixture in a solvent, and carrying out ultrasonic treatment to obtain a catalyst B and a mixed material mixed with black powder; (2) recovering the catalyst B, and filtering the mixed material mixed with the black powder to obtain powder C; (3) grinding the catalyst B into powder, and screening to obtain catalyst powder D; forming, drying and roasting the catalyst powder D to obtain a regenerated carrier; (4) dissolving the powder C in liquid paraffin, and stirring; and then dipping on a regenerated carrier, cooling, carbonizing, and carrying out hydro-thermal treatment to obtain the regenerated hydrogenation catalyst. According to the method, active metal components do not need to be additionally supplemented, the desulfurization performance of the regenerated catalyst is good, the dosage of a vulcanizing agent can be reduced, the vulcanizing time can be shortened, and the obtained regenerated hydrogenation catalyst has a reasonable pore structure, strength and metal distribution.

Description

technical field [0001] The invention relates to a catalyst regeneration method, more specifically, to a method for preparing a hydrodesulfurization catalyst by regeneration of a spent catalyst. Background technique [0002] Residual oil hydrogenation technology has the characteristics of strong feedstock adaptability, simple production and operation process, etc., and can provide high-quality feedstock for downstream catalytic cracking processes. It has become one of the most important heavy oil processing technologies in modern oil refining and petrochemical industries. In particular, in recent years, the amount of residual oil hydrotreating in China has been increasing, and the demand for residual oil hydrogenation catalysts has also increased significantly. In addition, the residual oil contains high content of metals, colloids, and asphaltenes, resulting in a generally 1 to 2-year operating cycle of the residual oil hydrogenation unit, and the catalyst will not be regene...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J27/30B01J38/00B01J38/72B01J38/02B01J38/56B01J38/48B01J35/10C10G45/08
CPCB01J27/30B01J38/00B01J38/72B01J38/02B01J38/56B01J38/485B01J38/48B01J35/10B01J35/1019B01J35/1038C10G45/08C10G2300/202Y02P20/584
Inventor 关月明王永林袁胜华张成
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap