Gasoline desulfurization combination method

A combined method and gasoline technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of complex operation of desulfurization method, difficulty in achieving deep desulfurization and reducing octane number loss at the same time, so as to ensure the use of Performance, resource and energy saving effects

Inactive Publication Date: 2016-01-20
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a combined method of gasoline desulfurization, which is used to solve the technical defects of the desulfurization method in the prior art, such as complex operation and difficulty in simultaneously realizing deep desulfurization and reducing octane loss

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
  • Gasoline desulfurization combination method
  • Gasoline desulfurization combination method
  • Gasoline desulfurization combination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. Preparation of selective hydrodesulfurization catalyst

[0069] CoSO first 4 The solution impregnates the ZSM-5 molecular sieve (carrier) with an equal volume, and after washing, drying and roasting, the (NH 4 ) 6 Mo 7 o 24. 4H 2 O aqueous solution on the impregnated CoSO 4 The ZSM-5 type molecular sieve in the solution is impregnated with equal volume, and after washing, drying and roasting, a selective hydrogenation desulfurization catalyst is prepared.

[0070] The total specific surface area of ​​the selective hydrodesulfurization catalyst prepared above is 168m 2 / g, the total pore volume is about 0.378mL / g, the loading amount of Co on the carrier is about 7%, the loading amount of Mo on the carrier is about 10%, and the mass ratio of Co and Mo loaded on the carrier is 0.7 :1.

[0071] 2. Gasoline desulfurization

[0072] Using catalytic gasoline produced by Daqing atmospheric heavy oil through catalytic cracking as raw material (see Table 1 for its com...

Embodiment 2

[0092] This embodiment is improved on the basis of Embodiment 1, where the difference is:

[0093] The raffinate oil in Example 1 was subjected to adsorption desulfurization to obtain desulfurized raffinate oil and sulfur-rich oil, and then the sulfur-rich oil was combined with the extracted oil and extracted oil in Example 1 to perform selective hydrodesulfurization to obtain desulfurized heavy fractions , the process flow is as figure 2 shown.

[0094] The desulfurization adsorbent is used for the above-mentioned adsorption desulfurization. The desulfurization adsorbent is obtained by carrying the active metal components on the ZSM-5 molecular sieve and activated carbon that have been treated with alkali respectively; the mass ratio of the molecular sieve to the activated carbon is 1:1, and the active metal For K and Ni, the loading of K on the composite support is about 5%, the loading of Ni on the composite support is about 10%, and the mass ratio of K and Ni loaded on t...

Embodiment 3

[0099] In addition to extractive distillation, the theoretical plate number of the extractive distillation tower is 25, the temperature of the top of the extractive distillation tower is about 80°C, the temperature of the bottom of the tower is about 150°C, and the absolute pressure of the top of the tower is about 0.2MPa. The material ratio is about 0.8, and the separation degree of olefins and aromatics in the extractive distillation tower reaches about 80% at this time;

[0100] In the adsorption desulfurization, the life of the desulfurization adsorbent is 3.5h, and the adsorption desulfurization efficiency reaches about 85%. The rest are the same as in Example 2 to obtain desulfurized gasoline with a yield of 94%. The composition is shown in Table 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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides a gasoline desulfurization combination method. The combination method includes the following steps that gasoline raw materials are cut into light fractions and heavy fractions; the heavy fractions are extracted and distilled through organic solvents, and olefin-containing raffinate and sulfide-and-arene-containing extract are obtained; the organic solvents in the extract are separated, and extract oil is obtained; selective hydrogen desulfurization is carried out on the extract oil, and desulfurized heavy fractions are obtained; the light fractions, the raffinate and the desulfurized heavy fractions are mixed, and desulfurized gasoline is obtained. The cutting temperature of the light fractions and the heavy fractions ranges from 35 DEG C to 60 DEG C. By means of the combination method, losses of the octane value of gasoline products can be remarkably reduced while deep desulfurization is achieved, and the product yield is higher than 95%.

Description

technical field [0001] The invention relates to a gasoline desulfurization method, in particular to a gasoline desulfurization combined method. Background technique [0002] As people pay more and more attention to environmental protection, the new environmental protection regulations of various countries in the world have stricter requirements on the quality of gasoline. For example, my country's national V motor gasoline standard that will be implemented on January 1, 2017 will require the olefin content to be below 25%, and the sulfur content to be below 10ppm; ); Europe requires that the sulfur content of gasoline should be lower than 50ppm (Euro IV emission standard). Therefore, it is necessary to carry out deep desulfurization of gasoline to meet the relevant requirements. [0003] Adsorption desulfurization has little effect on the octane number of gasoline products while removing sulfide in gasoline raw materials, so it is one of the more potential desulfurization m...

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): C10G67/00
Inventor 赵亮高金森郝天臻韩晓娜李海争蓝兴英王成秀
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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