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

Efficient treatment method and efficient treatment system for poor quality gasoline

A low-quality gasoline and treatment method technology, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, hydrogenation treatment process, etc., can solve the problems such as inability to achieve desulfurization

Active Publication Date: 2017-12-19
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only limited to increasing the octane number of FCC gasoline, and cannot achieve the purpose of desulfurization

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
  • Efficient treatment method and efficient treatment system for poor quality gasoline
  • Efficient treatment method and efficient treatment system for poor quality gasoline
  • Efficient treatment method and efficient treatment system for poor quality gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] This embodiment provides a sulfur content of 625.3μg·g -1 , 35.6v% olefin content, 14.4v% aromatics content, 18.2v% isoparaffin content, 0.7v% benzene content of FCC gasoline (full distillate gasoline, feed oil 1) as raw material for the method of low-quality gasoline treatment.

[0088] Wherein, based on the total weight of each catalyst, the composition ratio of each catalyst is as follows:

[0089] Oriented sulfur transfer catalyst: 12wt.% NiO, 6wt.% MoO 3 , 2wt.% La 2 o 3 , 20wt.% stepped hole HZSM-5, 60wt.% Al 2 o 3 -SiO 2 (silicon-containing alumina);

[0090] Light gasoline alkylation catalyst: 60wt.% modified β zeolite, 10wt.% HY zeolite, 8wt.% kaolin, containing 19wt.% Al 2 o 3 ,P 2 o 5 3wt.%;

[0091] Medium gasoline esterification catalyst: 50wt.% HZSM-5, 50wt.% Al 2 o 3 -SiO 2 (silicon-containing alumina);

[0092] Medium gasoline extraction solvent: 90wt.% sulfolane and 10wt.% tetraethylene glycol;

[0093] One-stage selective hydrodesulfuriz...

Embodiment 2

[0131] This embodiment provides a method and system for efficiently treating low-quality gasoline by using the above-mentioned raw material oil 1 as a raw material.

[0132] Such as figure 2 As shown, the system of this embodiment is basically the same as that of Embodiment 1, except that the raffinate outlet of the extraction distillation system 105 is not connected to the reaction raw material inlet of the medium gasoline esterification reactor 110 but is directly connected to the The reaction raw material inlet of the hydrocarbon isomerization / aromatization reactor 109; that is, the system of this embodiment does not have the medium gasoline esterification reactor 110, the formic acid extraction system and the coalescence dehydrator 111, but the extraction distillation system The raffinate outlet of 105 is directly connected to the reaction raw material inlet of the hydrocarbon isomerization / aromatization reactor 109 through pipelines, and the rest are the same as the afor...

Embodiment 3

[0138] This embodiment provides a sulfur content of 1230.0μg·g -1, olefin content 42.3v%, aromatics content 20.3v%, isoparaffin content 20.2v%, benzene content 1.5v% high sulfur, high olefin, high benzene FCC gasoline (stock oil 2, its properties see Table 3) as raw material A method and system for efficient processing of inferior gasoline.

[0139] Such as image 3 As shown, the system of this embodiment is basically the same as that of Embodiment 1, only a debenzene tower 112 is set on the pipeline between the extraction oil outlet of the extraction distillation system 105 and the reaction material inlet of the first-stage hydrodesulfurization reactor 106, The outlet of the extracted oil after debenzene removal in the debenzene tower 112 is connected to the first-stage hydrodesulfurization reactor 106, and the rest are the same as in Example 1.

[0140] The method for processing raw oil 2 is as follows:

[0141] Compatible with the system of this example, on the basis of ...

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
Diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides an efficient treatment method and an efficient treatment system for poor quality gasoline. The efficient treatment method comprises: carrying out a directional sulfur transfer reaction on full-distillate gasoline, and cutting the obtained oil products to obtain light gasoline distillate, medium gasoline distillate, and heavy gasoline distillate; carrying out an alkylation reaction on the light gasoline distillate to obtain alkylated light gasoline; obtaining raffinate oil and extract oil from the medium gasoline distillate through an extraction distillation system; carrying out an esterification reaction on the raffinate oil to obtain esterified medium gasoline; mixing the heavy gasoline distillate and the extract oil to obtain mixed oil, and sequentially carrying out a first-stage hydrodesulfurization reaction, a second-stage hydrodesulfurization reaction, H2S removing and a hydrocarbon isomerization / aromatization reaction to obtain treated heavy gasoline; and blending the alkylated light gasoline, the esterified medium gasoline and the treated heavy gasoline to obtain clean gasoline. According to the present invention, the method is particularly suitable for high-sulfur and high-olefin catalytic cracking gasoline, and can maintain or increase the octane number of gasoline while performs ultra-deep desulfurization.

Description

technical field [0001] The present invention relates to a high-efficiency treatment method and system for low-quality gasoline, in particular to a super-deep desulfurization-recovery (or increase) octane number hydrogenation modification method for low-quality FCC gasoline with ultra-high sulfur and high olefins. Background technique [0002] At present, most of my country's finished gasoline (more than 70%) is FCC gasoline, but my country's FCC gasoline has the characteristics of high olefin and sulfur content. Will cause higher octane loss. The new National VI gasoline standard reduces the olefin content to 18v% and 15v% in stages under the premise of maintaining the sulfur content ≤ 10mg / Kg, and increases the requirements for the reduction of olefins in FCC gasoline, which is essential for maintaining the octane number of FCC gasoline. Undoubtedly a huge challenge. [0003] CN104711018A and CN103666559A introduce a combination method for ultra-deep desulfurization of FCC...

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): C10G67/00
CPCC10G67/00C10G2300/202C10G2400/02C10G69/123C10G2300/301C10G2300/1044C10G2300/104C10G2300/1037C07C67/00
Inventor 范煜王世华
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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