Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving desulfurization selectivity of catalyst

A catalyst and selective technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Simple, low product octane loss

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the sulfur content of catalytic cracking gasoline is to be further reduced to less than 50 μg / g, the operating severity of the catalytic cracking raw material hydrogenation unit must be greatly increased, which is very uneconomical economically.

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

[0044] Using fresh A and B catalysts, the loading volume ratio of A and B catalysts in the reactor is A:B=85:15. The catalysts A and B in the reactor are vulcanized, and after the vulcanization finishes,

[0045] Adjust the gas in the reaction system to be the catalyzing gas. In the catalyzing gas, the volume fraction of hydrogen is 95%, and the volume fraction of the sum of hydrogen sulfide and carbon monoxide is 0.3%. Hydrogen partial pressure 1.6MPa; hydrogen oil ratio 400Nm 3 / m 3 ;Volume space velocity 4.0h -1 ; After contacting with the catalyst for 72 hours at a reaction temperature of 330°C. The distillation range of the catalytic raw material is 30-350°C, and the volume fraction of olefins is 15%.

[0046] Then adjust to normal reaction conditions, switch the catalyzing raw material to gasoline raw material C, switch the gas in the reactor to hydrogen-rich gas, take the hydrogen-rich gas as a whole as a benchmark, the volume fraction of hydrogen is 98%, the volume...

Embodiment 2

[0050] Using fresh A and B catalysts, the loading volume ratio of A and B catalysts in the reactor is A:B=85:15. The catalysts A and B in the reactor are vulcanized, and after the vulcanization finishes,

[0051] Adjust the gas in the reaction system to be the catalyzing gas. In the catalyzing gas, the volume fraction of hydrogen is 90%, and the volume fraction of the sum of hydrogen sulfide and carbon monoxide is 0.9%. Hydrogen partial pressure 1.6MPa; hydrogen oil ratio 400Nm 3 / m 3 ;Volume space velocity 4.0h -1 ; After contacting with the catalyst for 48h under the condition of reaction temperature 330°C. The distillation range of the catalytic raw material is 30-350°C, wherein the volume fraction of olefins is 30%.

[0052] Then adjust to normal reaction conditions, switch the catalytic raw material to gasoline raw material D, switch the gas in the reactor to hydrogen-rich gas, take the hydrogen-rich gas as a whole as a benchmark, the volume fraction of hydrogen is 95...

Embodiment 3

[0056] Using fresh A and B catalysts, the loading volume ratio of A and B catalysts in the reactor is A:B=85:15. The catalysts A and B in the reactor are vulcanized, and after the vulcanization finishes,

[0057] Adjust the gas in the reaction system to be the catalyzing gas. In the catalyzing gas, the volume fraction of hydrogen is 85%, and the volume fraction of the sum of hydrogen sulfide and carbon monoxide is 1.5%. Hydrogen partial pressure 1.6MPa; hydrogen oil ratio 400Nm 3 / m 3 ;Volume space velocity 4.0h -1 ; After contacting with the catalyst for 60 hours at a reaction temperature of 330°C. The distillation range of the catalytic raw material is 30-350°C, wherein the volume fraction of olefins is 30%, and the volume fraction of aromatics is 25%.

[0058] Then adjust to normal reaction conditions, switch the catalytic raw material to gasoline raw material D, switch the gas in the reactor to hydrogen-rich gas, take the hydrogen-rich gas as a whole as a benchmark, th...

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 relates to a method for improving desulfurization selectivity of a catalyst. A catalyst selectivity regulation and control process is increased between a desulfurization process and a normal production process, and the catalyst selectivity regulation and control process is that activity catalytic raw materials are in contact with the catalyst for 24-96h in an atmosphere of activity catalytic gas under activity catalytic reaction conditions. By adopting the method provided by the invention, the selectivity of the catalyst can be improved. Compared with the prior art, under the situation that the sulfur content in a gasoline product is the same, the olefin saturation rate is lower and the loss in octane number of a product is smaller.

Description

technical field [0001] The invention relates to a method for improving the desulfurization selectivity of a catalyst. Background technique [0002] With the rapid increase of the number of automobiles in our country, the problem of air pollution caused by automobile exhaust emissions is becoming more and more serious. The pollutants emitted by automobile exhaust mainly include SOx and NOx. Such pollutants will not only cause acid rain, but also destroy the ozone layer, and NOx can also cause cancer in the human body, causing great harm to humans and the environment. Sulfur in gasoline can poison automobile exhaust gas purification catalysts, seriously affecting its ability to treat exhaust pollutants. Therefore, my country has formulated more and more stringent gasoline quality standards to limit the sulfur content in gasoline. The standards implemented in Beijing and Shanghai require the sulfur content in gasoline to be less than 50 μg / g. [0003] The processing capacit...

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): C10G45/08
CPCB01J23/85B01J23/882B01J23/883C10G45/08
Inventor 张登前高晓冬习远兵李大东李明丰屈锦华聂红褚阳
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com