Oxidization-abstraction desulfurization technology of petroleum product based on ion liquid

An ionic liquid and extraction technology, applied in the field of desulfurization, can solve the problems of large amount of formic acid, large loss of desulfurization agent, secondary pollution, etc.

Active Publication Date: 2008-04-02
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of formic acid is large, and its concentration is required to be high, the operation process is complicated, the organic solvent is easy to volatilize, causing secondary pollution, and the loss of desulfurization agent is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 2ml [CH 3 COOHim]Br was added to 10ml of simulated gasoline containing sulfur (thiophene) 1500ppm, under normal pressure stirring, when the temperature was raised to 343K, 2ml of H 2 o 2 , After magnetic stirring for 5 hours, let stand, separate layers, and detect with gas chromatography, the sulfur content in the oil can be reduced to 10ppm. After use, the gasoline is separated, and the solvent layer is distilled under reduced pressure at 353K to be reused.

Embodiment 2

[0016] 2ml [CH 3 COOHim][BF 4 ] Join in the simulated gasoline of 10ml sulfur-containing (thiophene) 1500ppm, under normal pressure stirring, when warming up to 343K, add 2ml of H 2 o 2 , After magnetically stirring for 2 hours, let stand, separate layers, and detect with gas chromatography, the sulfur content in the oil can be reduced to 10ppm. After use, the gasoline is separated, and the solvent layer is distilled under reduced pressure at 353K to be reused.

Embodiment 3

[0018] 5ml [CH 3 COOHim]Br was added to 10ml of simulated gasoline containing sulfur (thiophene) 1500ppm, under normal pressure stirring, when the temperature was raised to 313K, 2ml of H 2 o 2 , After magnetically stirring for 2 hours, let stand, separate layers, and detect with gas chromatography, the sulfur content in the oil can be reduced to 10ppm. After use, the gasoline is separated, and the solvent layer is distilled under reduced pressure at 353K to be reused.

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PUM

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Abstract

The present invention relates to a technology suitable for desulfurization of fuel oil products. In the oxidizing-extracting process to sulfur-containing oil products, the technology uses ionic liquid as reaction medium, catalyst and extracting agent to remove organic sulfur or inorganic sulfur in the oil products. Compared with the prior oxidative desulfurizing and extraction desulfurizing method, the present invention improves desulphurization effect to over 99 percent from about 50 percent; meanwhile, the added carboxyl alkyl functionalized ionic liquid has low vapor pressure and high boiling point, which is convenient for recycling. The novel desulfurization process can obviously improve desulphurization effect, simplifies production process, saves energy, and has the advantages of simple equipment, convenient operation, little investment, easy realization of industrialization, etc.

Description

[0001] Technical field: The present invention relates to a desulfurization technology in which ionic liquid is used as reaction medium, catalyst and extraction agent in the process of oxidation-extraction desulfurization of oil products. Background technique: [0002] With the intensification of environmental pollution and the enhancement of people's awareness of environmental protection, people are paying more and more attention to the damage to the ecological environment such as acid rain caused by the discharge of sulfide in the process of oil processing and use, such as the emission of sulfur in gasoline after combustion To the atmosphere will not only affect the environment, the generated SO x It also reduces the emission of NO from the automobile exhaust converter x , the conversion rate of incompletely combusted hydrocarbons and particulate matter, etc. The continuous reduction of crude oil reserves has made the inferiority of oil products worse. In my country, gasolin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/20C10G29/28
Inventor 张锁江刘坤峰刘龙于英豪张香平
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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