Method for reducing sulfur content in gasoline

A technology for sulfur content and gasoline, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of large loss of octane number and low yield, and achieve small loss of octane number, reduced olefin content, The effect of reducing octane loss

Active Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is mainly applicable to relatively heavy catalytic cracking gasoline fractions. If the whole fraction gasoline with an initial boiling point of about 35°C is processed, the octane number loss of the product will be large, or when the octane number loss is small. 5 + The yield is too low (only about 80% by volume)

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing sulfur content in gasoline
  • Method for reducing sulfur content in gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] In this example, the same raw material oil A as that in Comparative Example 1 was used, and the raw material oil A was cut into three fractions at 60°C and 120°C as cut points, and the obtained light gasoline fraction, intermediate gasoline fraction and heavy gasoline fraction accounted for 30.0% of the raw material respectively. % by weight, 30.0% by weight and 40.0% by weight. The distillate of light gasoline is refined by alkali washing to remove mercaptan sulfur. The middle gasoline fraction is mixed with hydrogen and enters the fixed bed reactor for hydrofining reaction, and then sent to catalytic reforming treatment. The heavy gasoline fraction is mixed with hydrogen and then enters three hydrotreating reactors for selective hydrodediene, selective hydrodesulfurization and selective hydrodemercaptan reactions. The products of the above-mentioned three-stage gasoline fractions are blended to obtain full fraction gasoline products.

[0066] The hydrogenation react...

Embodiment 2

[0068] A catalytically cracked gasoline is used as feedstock B, and its feedstock properties are shown in Table 1. The feed oil B was cut into three fractions at 65°C and 140°C as cut points, and the obtained light gasoline fraction, middle gasoline fraction and heavy gasoline fraction accounted for 33.0 wt%, 33.0 wt% and 34.0 wt% of the raw material respectively. The distillate of light gasoline is refined by alkali washing to remove mercaptan sulfur. The middle gasoline fraction is mixed with hydrogen and enters the fixed bed reactor for hydrofining reaction, and then sent to catalytic reforming treatment. The heavy gasoline fraction is mixed with hydrogen and then enters three hydrotreating reactors for selective hydrodediene, selective hydrodesulfurization and selective hydrodemercaptan reactions. The products of the above-mentioned three-stage gasoline fractions are blended to obtain full fraction gasoline products.

[0069] The hydrogenation reaction conditions of the ...

Embodiment 3

[0071] A catalytically cracked gasoline is used as feedstock C, and its feedstock properties are shown in Table 1. The raw material oil C was cut into three fractions at 80°C and 160°C as cut points, and the obtained light gasoline fraction, middle gasoline fraction and heavy gasoline fraction accounted for 40.0 wt%, 40.0 wt% and 20.0 wt% of the raw material respectively. The distillate of light gasoline is refined by alkali washing to remove mercaptan sulfur. The middle gasoline fraction is mixed with hydrogen and enters the fixed bed reactor for hydrofining reaction, and then sent to catalytic reforming treatment. The heavy gasoline fraction is mixed with hydrogen and then enters three hydrotreating reactors for selective hydrodediene, selective hydrodesulfurization and selective hydrodemercaptan reactions. The products of the above-mentioned three-stage gasoline fractions are blended to obtain full fraction gasoline products.

[0072] The hydrogenation reaction conditions...

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 method for reducing sulfur content in gasoline. According to the invention, full-fraction gasoline is fractionated to obtain a light gasoline fraction, an intermediate gasoline fraction and a heavy gasoline fraction, wherein the light gasoline fraction is subjected to alkali washing and refining so as to remove mercaptan sulfur therein, the intermediate gasoline fraction enters into a first hydrogenation unit for catalytic reforming so as to obtain a reformed intermediate gasoline fraction with an increased octane number, the heavy gasoline fraction enters into a second hydrogenation unit and contacts with a selective hydrodesulfurization catalyst for selective hydrodesulfurization, and the refined light gasoline fraction, the reformed intermediate gasoline fraction and the hydrogenated heavy gasoline fraction are mixed to obtain a full-fraction gasoline fraction with ultra low content of sulfur. The obtained full-fraction gasoline product has total sulfur content of less than 10 mu g/g, and compared with a full-fraction gasoline raw material, loss of the octane number ROC of the full-fraction gasoline product is less than 1.0 unit.

Description

technical field [0001] The invention relates to a method for reducing the sulfur content of gasoline, in particular to a method for reducing the sulfur content of catalytic cracking gasoline and producing ultra-low sulfur gasoline. Background technique [0002] With the enhancement of human environmental protection awareness, people pay more and more attention to the pollution of atmospheric environment caused by harmful substances in automobile exhaust. Countries all over the world have put forward increasingly strict restrictions on the composition of engine fuel, especially the sulfur content. The European Union began to implement Euro IV vehicle exhaust emission standards in 2005, requiring gasoline sulfur content to be less than 50 μg / g, and implemented Euro V emission standards on September 1, 2009, requiring gasoline sulfur content to be less than 10 μg / g, and plans to implement in 2014 Around the implementation of more stringent Euro VI standards; China implemented t...

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): C10G69/00
Inventor 屈锦华习远兵高晓冬戴立顺李明丰聂红褚阳王子文
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