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Catalytic oxidation oil product desulfurization method based on phosphotungstic acid ionic liquid

A technology of ionic liquid and catalytic oxidation, which is applied in the refining of oxygenated compounds, petroleum industry, organic chemistry, etc. It can solve the problems of low oil recovery rate, large amount of catalyst, low desulfurization efficiency, etc., and achieve high oil recovery rate , less dosage, high desulfurization efficiency

Active Publication Date: 2015-01-28
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a catalytic oxidation oil desulfurization method based on phosphotungstic acid ionic liquid, which solves the problems of low desulfurization efficiency, large catalyst consumption and low oil recovery rate in the prior art

Method used

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  • Catalytic oxidation oil product desulfurization method based on phosphotungstic acid ionic liquid
  • Catalytic oxidation oil product desulfurization method based on phosphotungstic acid ionic liquid
  • Catalytic oxidation oil product desulfurization method based on phosphotungstic acid ionic liquid

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Experimental program
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Effect test

Embodiment 2

[0036] Add 2.5gN-methyl-N-butylmorpholine phosphotungstic acid ionic liquid, 0.15g30% hydrogen peroxide and 2.5g DBT-containing simulated gasoline in a 50mL round bottom flask equipped with a reflux condensing device, and the reaction mixture is at 50 Magnetic stirring reaction at ℃ for 2.0h, static separation after the reaction, separation of the oil sample by pouring, extraction of the separated oil sample with N,N-dimethylformamide, and analysis of the desulfurized oil sample by gas chromatography DBT, the calculated desulfurization rate is 97.23%. Other steps are the same as in Example 1.

Embodiment 3

[0038] Add 2.0gN-methyl-N-butylmorpholine phosphotungstic acid ionic liquid, 0.15g30% hydrogen peroxide and 2.5g DBT-containing simulated gasoline in a 50mL round bottom flask equipped with a reflux condensing device, and the reaction mixture is at 50 Magnetic stirring reaction at ℃ for 0.5h, static separation after the reaction, separation of the oil sample by pouring, extraction of the separated oil sample with N,N-dimethylformamide, and analysis of the desulfurized oil sample by gas chromatography DBT, the calculated desulfurization rate is 64.65%.

Embodiment 4

[0040] Add 2.0gN-methyl-N-butylmorpholine phosphotungstic acid ionic liquid, 0.15g30% hydrogen peroxide and 2.5g DBT-containing simulated gasoline in a 50mL round bottom flask equipped with a reflux condensing device, and the reaction mixture is at 50 Magnetic stirring reaction at ℃ for 2.0h, static separation after the reaction, separation of the oil sample by pouring, extraction of the separated oil sample with N,N-dimethylformamide, and analysis of the desulfurized oil sample by gas chromatography DBT, the calculated desulfurization rate is 95.79%.

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Abstract

The invention belongs to the technical field of oxidative desulfurization of ionic liquid and particularly relates to a catalytic oxidation oil product desulfurization method based on phosphotungstic acid ionic liquid. The method is characterized in that the phosphotungstic acid ionic liquid is taken as a catalyst and is mixed with 30% of hydrogen peroxide and an oil product, a reaction is carried out at reaction temperature ranging from 25 DEG C to 70 DEG C under a stirring condition for 0.5-3.0 hours, and an upper oil phase separated after the reaction is finished is an oil product subjected to desulfurization. The method has the advantages that the use amount of the catalyst is low, and the desulfurization efficiency of the catalyst is as high as 97.23%; the reaction condition is mild, the reaction can be performed under normal pressure, and the reaction time is short; the product separation is easy, pollution is avoided, and the oil product recycling rate is high; the catalyst is stable in performance and is reusable, and the method is low in after-treatment cost, is environmentally friendly, and is expected to form a clean process route with high competitiveness.

Description

technical field [0001] The invention relates to an oil desulfurization method, in particular to a catalytic oxidation oil desulfurization method based on phosphotungstic acid ionic liquid, and belongs to the technical field of fuel oil desulfurization. Background technique [0002] In recent years, with the increase of motor vehicles, automobile exhaust has become the main source of air pollution, and acid rain has become more frequent, seriously endangering buildings, soil and human living environment. Therefore, countries around the world have proposed higher oil quality standards to further limit the sulfur content, olefin content and benzene content in oil products, so as to better protect the living space of human beings. With the increase in the processing of sour crude oil and the popularization of catalytic cracking of heavy oil, the phenomenon of excessive sulfur content and poor stability of oil products is becoming more and more serious, and desulfurization resear...

Claims

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Application Information

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IPC IPC(8): C10G53/14C10G27/12C07D295/037
CPCC07D295/037C10G27/12C10G53/14C10G2300/202C10G2300/70
Inventor 王璐璐王吉林
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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