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Method for extracting and removing dibenzothiophene

The technology of dibenzothiophene and extraction agent is applied in the field of extraction and removal of dibenzothiophene, which can solve the problems of complex ionic liquid process and high cost of raw materials, and achieve the effects of simple extraction method, high desulfurization efficiency and environmental friendliness.

Active Publication Date: 2021-06-25
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of synthesizing ionic liquids with good desulfurization effect is relatively complicated, and the cost of raw materials is relatively high

Method used

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  • Method for extracting and removing dibenzothiophene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of a desulfurization extractant, the preparation method is: tetrabutylammonium chloride and p-toluenesulfonic acid molar ratio is 1:2 to form 2g of deep eutectic solvent, and then the deep eutectic solvent Loaded onto 0.1 g of reduced graphene oxide to obtain a desulfurization extractant, the evaluation results of its transportation and storage are shown in Table 1 below.

[0024] Utilize the method for extracting dibenzothiophene with the above-mentioned desulfurization extractant, described method is: the dibenzothiophene n-octane solution that 0.5g concentration is 1600ppm, 0.15g desulfurization extractant and 0.05g 30% hydrogen peroxide solution at 25 Stir at 800 rpm for 60 min at °C, and after standing to separate layers, detect the concentration of dibenzothiophene in the n-octane layer by gas chromatography. The desulfurization rate is shown in Table 1 below.

Embodiment 2

[0026] A preparation method of a desulfurization extractant, the preparation method is: tetrabutylammonium chloride and p-toluenesulfonic acid molar ratio is 1:2 to form 2g of deep eutectic solvent, and then the deep eutectic solvent Loaded onto 0.1 g of reduced graphene oxide to obtain a desulfurization extractant, the evaluation results of its transportation and storage are shown in Table 1 below.

[0027] Utilize the method for extracting dibenzothiophene with the above-mentioned desulfurization extractant, described method is: the dibenzothiophene n-octane solution that 0.5g concentration is 1600ppm, 0.25g desulfurization extractant and 0.05g 30% hydrogen peroxide solution at 25 Stir at 800 rpm for 60 min at °C, and after standing to separate layers, detect the concentration of dibenzothiophene in the n-octane layer by gas chromatography. The desulfurization rate is shown in Table 1 below.

Embodiment 3

[0029] A preparation method of a desulfurization extractant, the preparation method is: tetrabutylammonium chloride and p-toluenesulfonic acid molar ratio is 1:2 to form 2g of deep eutectic solvent, and then the deep eutectic solvent Loaded onto 0.1 g of reduced graphene oxide to obtain a desulfurization extractant, the evaluation results of its transportation and storage are shown in Table 1 below.

[0030] Utilize the method for extracting dibenzothiophene with the above-mentioned desulfurization extractant, described method is: the dibenzothiophene n-octane solution that 0.5g concentration is 1600ppm, 0.15g desulfurization extractant and 0.05g 30% hydrogen peroxide solution are in 60 Stir at 800 rpm for 60 min at °C, and after standing to separate layers, detect the concentration of dibenzothiophene in the n-octane layer by gas chromatography. The desulfurization rate is shown in Table 1 below.

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Abstract

The invention relates to a method for extracting and removing dibenzothiophene, and belongs to the field of extraction separation. The method comprises the steps: loading a deep eutectic solvent on graphene through an impregnation method to obtain a desulfurization extraction agent, uniformly mixing a dibenzothiophene n-octane solution, the desulfurization extraction agent and an oxidizing agent, and standing for layering. The extraction method disclosed by the invention is simple, high in desulfurization efficiency, mild in operation condition and environment-friendly.

Description

technical field [0001] The invention relates to a method for extracting and removing dibenzothiophene, which belongs to the field of extraction and separation. Background technique [0002] With the rapid development of today's economy and society, almost every household has a car as a means of transportation, and the resulting problem is that the sulfur compounds in gasoline will cause serious pollution to the environment. These sulfides are combusted to produce sulfur oxides SO x As well as acidic substances, most of the combustion products are SO 2 , easily produce acid rain and acid mist in the air, causing great damage to the environment. The sulfur content in domestic gasoline is high, and it is an urgent need to develop simple, green and effective desulfurization technology to reduce the sulfur content in fuel oil. The most commonly used desulfurization technology in industry is hydrodesulfurization, but the conditions required by this technology are relatively har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/06B01D11/04C07D333/76
CPCC10G21/06B01D11/0492C07D333/76C10G2300/202
Inventor 柳月李霞崔颖娜周新尹静梅李慎敏
Owner DALIAN UNIV
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