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Production method and production system of super-clean high-octane number gasoline

A production method and gasoline technology, which are applied in the fields of hydrocarbon oil treatment products, chemical instruments and methods, and refined hydrocarbon oil, etc., can solve the problems of complex process flow and low liquid yield of gasoline products.

Active Publication Date: 2017-12-19
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two methods can obtain clean gasoline products, and the octane number of the middle distillate is improved after catalytic reforming, and can be mixed with light and heavy distillate gasoline to obtain clean gasoline with a high octane number; but the process is complicated and requires The catalytic reforming reactor and the hydrodesulfurization reactor cooperate with each other; and the middle distillate gasoline is reformed to produce liquefied gas and hydrogen, and the liquid yield of gasoline products is low

Method used

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  • Production method and production system of super-clean high-octane number gasoline
  • Production method and production system of super-clean high-octane number gasoline
  • Production method and production system of super-clean high-octane number gasoline

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Experimental program
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Embodiment 1

[0095] 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 FCC gasoline (full distillate gasoline, raw material oil 1) is used as raw material for hydroreforming treatment to produce ultra-low sulfur The high-octane gasoline method.

[0096] Wherein, based on the total weight of each catalyst, the composition ratio of each catalyst is as follows:

[0097] 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);

[0098] Light gasoline esterification catalyst: 40wt.% HZSM-5, 60wt.% Al 2 o 3 -SiO 2 (silicon-containing alumina);

[0099] Medium gasoline esterification catalyst: 50wt.% HZSM-5, 50wt.% Al 2 o 3 -SiO 2 (silicon-containing alumina);

[0100] Medium gasoline extraction solvent: 90wt.% sulfolane and 10wt.% tetraethylene glycol;

[0101] One-stage se...

Embodiment 2

[0147] This embodiment provides a method and system for producing ultra-clean high-octane gasoline using the aforementioned feedstock 1 as a raw material.

[0148] 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 and distillation system 106 is not connected to the reaction raw material inlet of the medium gasoline esterification reactor 111 but is directly connected to the The reaction raw material inlet of the hydrocarbon isomerization / aromatization reactor 110; that is, the system of this embodiment does not have the medium gasoline esterification reactor 111, the formic acid extraction system and the coalescence dehydrator 112, but the extraction distillation system The raffinate outlet of 106 is directly connected to the reaction raw material inlet of the hydrocarbon isomerization / aromatization reactor 110 through pipelines, and the rest are the same as the aforementi...

Embodiment 3

[0154] 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 producing ultra-clean high-octane gasoline.

[0155] Such as image 3 As shown, the system of this embodiment is basically the same as that of Embodiment 1, only a debenzene tower 113 is set on the pipeline between the extraction oil outlet of the extraction distillation system 106 and the reaction material inlet of the first-stage hydrodesulfurization reactor 107, The outlet of the extracted oil after debenzene removal in the debenzene tower 113 is connected to the first-stage hydrodesulfurization reactor 107, and the rest are the same as in Example 1.

[0156] The method of producing ultra-clean high-octane gasoline using feedstock 2 is as follows:

[0157] Compatible with the...

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Abstract

The invention provides a production method and a production system of a super-clean high-octane number gasoline. The production 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 esterification reaction on the light gasoline distillate to obtain esterified 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 esterified 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 production method and production system of ultra-clean high-octane gasoline, in particular to the field of catalytic cracking (FCC) gasoline refining, especially the ultra-deep desulfurization of low-quality FCC gasoline with ultra-high sulfur and high olefins- Restoring (or increasing) the octane number hydro-upgrading method. Background technique [0002] Under the trend of increasingly stringent environmental protection regulations in the world, countries around the world have begun to strengthen the requirements for the quality standards of gasoline products. From January 1, 2017, the country began to supply National V standard gasoline. The National V gasoline standard stipulates that the sulfur content in gasoline is ≤10mg / Kg, and the olefin content is ≤24v%. , which makes my country's oil refining industry face severe challenges. The vast majority (more than 70%) of my country's motor gasoline is FCC gasoline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2400/02C10G2300/202C10G45/12C10G67/04C10G7/08C10G21/00C10G2300/104C10G2300/1044C10G67/14C10G2300/1037C10L1/023B01J19/245C10L2290/24B01J2219/24C10L2270/023C10L2200/0423C10L2290/543
Inventor 范煜王世华
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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