Fuel oil desulfurization process by ionic liquid extraction-photocatalytic oxidation method

A photocatalytic oxidation and ionic liquid technology, which is applied in the petroleum industry, refining hydrocarbon oil, and multi-stage series refining process treatment, etc., can solve the problems of high cost, unfavorable industrialization and application, and achieve short reaction time and high price The effect of low cost and lower reaction cost

Inactive Publication Date: 2009-01-07
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ionic liquids used in the above fuel oil desulfurization are basically imidazoles, and the cost is relatively high, which is not conducive to industrial promotion and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: The sulfur content of catalytically cracked gasoline is 630 μg / g, and the distillation range is 60-200° C.

[0021] 10ml Et 3 NHCl ZnCl 2 Mix ionic liquid and 50ml gasoline, mix 3ml, 30% (w / w) H 2 o 2 added into the reaction solution, stirred under the irradiation of a 500W high-pressure mercury lamp, and reacted for 10 minutes to separate the gasoline and the ionic liquid. After testing, the sulfur content of gasoline after desulfurization is reduced to 65μg / g, and the desulfurization rate is 89.7%.

Embodiment 2

[0022]Example 2: The sulfur content of catalytically cracked gasoline is 630 μg / g, and the distillation range is 60-200° C.

[0023] 50ml Et 3 NHCl ZnCl 2 Ionic liquid and 50ml gasoline were mixed, 3ml, 30% (w / w) H 2 o 2 and 0.1g TiO 2 added into the reaction solution, stirred under the irradiation of a 500W high-pressure mercury lamp, and reacted for 20 minutes to separate the gasoline and the ionic liquid. After testing, the sulfur content of gasoline after desulfurization is reduced to 28μg / g, and the desulfurization rate is 95.6%.

Embodiment 3

[0024] Example 3: The sulfur content of catalytically cracked gasoline is 630 μg / g, and the distillation range is 60-200° C.

[0025] 100ml Et 3 NHCl 2FeCl 3 Ionic liquid and 50ml gasoline were mixed, 3ml, 30% (w / w) H 2 o 2 with FeSO 4 and 0.1g TiO 2 Added to the reaction solution (where FeSO 4 with H 2 o 2 The ratio of the amount of the substance is 0.05:1), stirred under the irradiation of a 500W high-pressure mercury lamp, and separated the gasoline and the ionic liquid after reacting for 50 minutes. After testing, the sulfur content of gasoline after desulfurization is reduced to 10 μg / g, and the desulfurization rate is 98.4%.

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PUM

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Abstract

The present invention discloses a desulfurization method for ionic liquid extraction-photocatalytic oxide fuel oil. The fuel oil and the ionic liquid are mixed and stirred into a reaction system according to the volume proportion of 1:10 to 1:0.1; one of H2O2, Fenton agent and O2 in the air is used as the oxidant and nano TiO2 is used as the photocatalyst; the oxidant and the photocatalyst are added into the mixed system of the ionic liquid and the fuel oil; a high-pressure mercury lamp is used as the light source for radiation; after reacting for 5 to 60 minutes, the fuel and the ionic liquid separate; the sulfocompound in the fuel oil is oxidized into polar substance and transferred into the ionic liquid for desulfurization from the fuel oil. The present invention adopts the cheap quaternary ammonium ion as the extractant and the ionic liquid can be recycled, thus reducing the reaction cost; the present invention is operated under normal temperature and pressure with simple equipment and convenient operation; the reaction time of the present invention is short, which is conducive to the industrial production.

Description

technical field [0001] The invention relates to the technical field of oil product refining in the petrochemical industry, in particular to a method for removing sulfur compounds in fuel oil by photocatalytic oxidation in ionic liquid. Background technique [0002] The combustion of sulfur compounds in fuel oil such as gasoline or diesel produces SO 2 , SO 2 Emissions into the atmosphere will not only cause acid rain and pollute the environment, but also SO 2 It is also an inhibitor of automobile exhaust gas conversion catalysts, which will significantly reduce the NO X , the conversion efficiency of incompletely combusted hydrocarbons and particulate matter, etc., which will aggravate environmental pollution. In addition, sulfur-containing compounds can also lead to deterioration of oil stability. Therefore, countries around the world have successively promulgated strict fuel oil sulfur standards. For example, the US Environmental Protection Agency required that the sul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/14C10G53/06C10G21/28
Inventor 李发堂刘瑞红赵地顺孙智敏刘英
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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