Method of removing arene and olefin in naphtha and solvent oil simultaneously

A technology for petroleum and oil products, which is applied in the field of simultaneous removal of aromatics and olefins in naphtha and solvent oil, which can solve the problems of removal and non-appearance, and achieve the effect of small investment, high removal rate and guaranteed purity

Inactive Publication Date: 2007-11-14
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although there are similar related literature reports, there is no corresponding mature technology and process that can simultaneously remove aromatics and olefins in petroleum oils, and even remove sulfides in them at the same time

Method used

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  • Method of removing arene and olefin in naphtha and solvent oil simultaneously

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Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: the preparation of ionic liquid

[0030] A metal halide (such as AlCl 3 ) slowly added to the synthesized cationic ligand in a dry nitrogen-protected glove box, stirring during the addition to obtain a liquid state ionic liquid, and then according to different ratios, adding another metal salt, in Stir overnight in the glove box. Finally, make HCl gas at a certain pressure (0.25-0.5 MPa) pass through the above-mentioned ionic liquid for 5-10 minutes to obtain different new ionic liquids.

Embodiment 2

[0032] With the [SO 3 Hbim]Cl-AlCl 3 -ZnCl 2 (The molar ratio of the two metal salts is 5:5) (chloro-butyl-sulfoimidazole-AlCl 3 -ZnCl 2 ) ionic liquid as catalyst (wherein the molar ratio of anion and cation is 2: 1), Daqing cracked naphtha is raw material, wherein the amount of ionic liquid added is 12% of the raw material amount, under the condition of 20 ℃, stirring in a three-necked flask Reaction, the reaction time is 25 minutes, stop stirring, heat to about 90°C, and let it stand for 15 minutes, the reaction product (naphtha) will be automatically layered with the ionic liquid, and the liquid product in the upper layer will be taken out for analysis, and the ionic liquid in the lower layer can be continue to use. The yield of the obtained liquid product is above 99%, the removal rate of olefins is 100%, and the removal rate of aromatics is 28.12%. At the same time, the adsorption and dissolution properties of the ionic liquid are used to make some sulfides adsorb a...

Embodiment 3

[0036] [COOHbim]Cl-AlCl prepared through the HCl gas treatment according to the method of Example 1 3 -ZnCl 2 (The molar ratio of the two metal salts is 5:5) (chlorination-butyl-carboxyimidazole-AlCl 3 -ZnCl 2 ) ionic liquid as a catalyst (wherein the molar ratio of anion and cation is 2:1), Daqing cracked naphtha is a raw material, wherein the amount of ionic liquid added is 5% of the raw material amount, at 20°C and 0.1MPa conditions, in a three-necked flask The reaction was carried out with medium stirring, the reaction time was 25 minutes, the stirring was stopped, heated to about 90°C, and after standing for 15 minutes, the reaction product (naphtha) would be automatically layered with the ionic liquid, and the upper liquid product was taken out for analysis, and the lower layer Ionic liquids can continue to be used. The yield of the obtained liquid product is above 99%, the removal rate of olefins is 88.89%, and the removal rate of aromatics is 78.91%. At the same ti...

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Abstract

The present invention relates to a method for simultaneously removing aromatic hydrocarbon and olefin from petroleum oil product. It is characterized by that it uses ion liquid as catalyst, makes it be mixed with petroleum oil product and fully contacted with said petroleum oil product so as to make the aromatic hydrocarbon and olefin contained in the raw material produce alkylation reaction or oligomerization reaction of olefin, and be converted into saturated hydrocarbon or oligomer of olefin and can simultaneously attain the goal of removing aromatic hydrocarbon and olefin from raw material oil. The described ion liquid is formed from anion ligand made up by using at least two metal halides through a certain compounding process and organic cation ligand.

Description

[0001] Technology area [0002] The invention relates to the field of oil processing in petrochemical industry, in particular to a method for simultaneously removing aromatics and olefins in petroleum oil products, especially a method for simultaneously removing naphtha that can be widely used in petrochemical processes A method for aromatics and olefins in oil and various solvent oils. This method can also remove a small amount of sulfide contained in the raw material at the same time. Background technique [0003] In recent years, it is a relatively common process to use petroleum oil products, especially naphtha, to produce various types of solvent oils. Olefins and aromatics are extremely harmful to human health, and benzene is a serious carcinogen. Therefore, the country has clear standard requirements for the content of aromatics and olefins in solvent oil; on the other hand, if the content of olefins in the oil is high, under the influence of external conditions or the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/00
Inventor 孙学文赵锁奇许志明张民王仁安
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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