Sulfuration method of secondary active center diesel oil hydrodesulfurization catalyst

An active center and hydrodesulfurization technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems that do not involve the influence of sulfidation pressure on catalyst activity, and achieve improved hydrodesulfurization active effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The design of the vulcanization pressure in the above patents is carried out under the reaction pressure conditions, and none of them involves the influence of the vulcanization pressure on the activity of the catalyst.

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

[0033] The catalyst ODS-1 is selected as the hydrogenation catalyst, the vulcanizing agent is dimethyl disulfide, the vulcanization conditions and process are as follows: the system pressure is 6.4MPa, after passing the airtight inspection, the reactor inlet rises to 135°C, and then starts Feed pump, liquid hour volume space velocity is 2h -1 , into vulcanized oil. The concentration of dimethyl disulfide in vulcanized oil is 4%. After constant temperature for 8 hours, the temperature is raised to 230°C at a rate of 15°C / h. After the temperature rises to 230°C, H is observed. 2 After S penetrates the bed, keep the temperature constant for 8 hours. Then reduce the system pressure to 4.0MPa, then raise the temperature to 320°C at a rate of 15°C / h, and keep the temperature constant for 10 hours after the temperature rises to 320°C. After the sulfidation process of the catalyst is over, the diesel feed oil is replaced, and the hydrogen partial pressure of the system is raised bac...

Embodiment 2

[0038] The selected catalyst is replaced with ODS-2, and the process conditions of the high-temperature vulcanization section are changed: the system pressure is changed to 3.5MPa, and the vulcanization temperature is 320°C. All the other vulcanization process conditions are consistent with embodiment 1.

[0039] Experimental process conditions are consistent with embodiment 1.

Embodiment 3

[0043] The selected catalyst is replaced with ODS-2, and the process conditions of the high-temperature vulcanization section are changed: the system pressure is changed to 4.5MPa, and the vulcanization temperature is 320°C. All the other vulcanization process conditions are consistent with embodiment 1.

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 discloses a sulfuration method of a secondary active center diesel oil hydrodesulfurization catalyst. According to the sulfuration method, in sulfuration processes of the secondary active center diesel oil hydrodesulfurization catalyst, sulfuration is carried out under a relatively high pressure at a relatively low temperature firstly; and then sulfuration is carried out under a relatively low pressure at a relatively high temperature. The sulfuration method is capable of forming more CoMoS phases which are more dispersive, and more sulphur vacancies and desulfurization centers, so that hydrodesulfurization activity of the secondary active center diesel oil hydrodesulfurization catalyst is increased.

Description

technical field [0001] The invention relates to a method for vulcanizing a diesel hydrodesulfurization catalyst, in particular to a method for vulcanizing a diesel hydrodesulfurization catalyst with a type II active center. Background technique [0002] In recent years, with the increasingly stringent environmental regulations, the production of clean diesel has become a common problem faced by refineries all over the world. In 2006, the United States passed a regulation requiring the sulfur content in diesel to be reduced from 50ppm to 15ppm, and Europe and Japan also proposed a requirement that the sulfur content be less than 10ppm in 2008. my country also adjusts the diesel quality requirements in a timely manner according to its own situation, and continuously narrows the gap with foreign developed countries. From July 1, 2005, the sulfur content standard of diesel for vehicles shall be implemented according to the European Class II standard, which requires sulfur to be...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08B01J27/051B01J37/20
Inventor 孙进郭蓉丁莉杨成敏姚运海段为宇
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