Method for extracting, oxidizing and desulfuring fuel oil in ionic liquid

A technology of ionic liquid and oxidative desulfurization, which is applied in the fields of refining oxygen-containing compounds, petroleum industry, refining hydrocarbon oil, etc., can solve the problems of complicated operation process and increased reaction cost, and achieve the effect of simple separation

Active Publication Date: 2014-06-04
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the use of sacrificial agents in these methods, the rea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 10ml [BMIM]BF 4 , 20ml of fuel oil, and the catalyst NHPI with a sulfur content of 20% mole in the fuel oil was added to an autoclave with a volume of 100ml. After sealing, oxygen was introduced at a slow speed of 1L / min. After three replacements, the set pressure was 0.3MPa, and the oxygen valve was closed. Turn on the magnetic stirring and heat the oil bath to 110°C, and react for 3h. After the reaction, the fuel oil is separated from the ionic liquid, and the desulfurization rate is 95.6%.

Embodiment 2

[0018] Add 10ml of [BMIM]PF 6 , 20ml of fuel oil, and the catalyst NHPI with a sulfur content of 10% mole in the fuel oil was added to an autoclave with a volume of 100ml. After sealing, oxygen was introduced at a slow rate of 1L / min. After three replacements, the set pressure was 0.3MPa, and the oxygen valve was closed. Turn on the magnetic stirring and heat the oil bath to 110°C, and react for 3h. After the reaction, the fuel oil is separated from the ionic liquid, and the desulfurization rate is 93.2%.

Embodiment 3

[0020] 10ml [BMIM]BF 4 , 20ml of fuel oil, the catalyst NHPI with a sulfur content of 500% mole in the fuel oil was added to an autoclave with a volume of 100ml, and after sealing, oxygen was introduced at a slow rate of 1L / min, and after three replacements, the set pressure was 0.3MPa, and the oxygen valve was closed. Turn on the magnetic stirring and heat the oil bath to 130° C., and react for 5 hours. After the reaction, the fuel oil is separated from the ionic liquid, and the desulfurization rate is 99.8%.

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Abstract

The invention discloses a method for extracting, oxidizing and desulfuring fuel oil in ionic liquid. The method comprises the steps of mixing the ionic liquid, a catalyst and the fuel oil in ratio, and adding the mixture into a high-pressure kettle, wherein a ratio of the total volume of the ionic liquid and the fuel oil to the volume of the high-pressure kettle is 3: (6-10); sealing the high-pressure kettle, feeding oxygen into the high-pressure kettle, performing replacement for three times till the oxygen pressure reaches 0.1-0.5MPa, switching off an oxygen valve, and switching on magnetic stirring and oil bath heating, wherein a ratio of the volume of an extracting agent to the volume of the fuel oil is (0.1-5): 1 and a mole ratio of the catalyst to the total sulfur content of the fuel oil is (0.1-5): 1; stirring and heating to 30-130 DEG C, and generating reaction for 1-5 hours. The method has the advantages of mild operation condition, no use of sacrificial agent and low cost.

Description

technical field [0001] The invention relates to a method for extracting and catalytic oxidation desulfurization of fuel oil in petroleum refining process. Background technique [0002] Sulfur compounds in fuel are converted to SO after combustion X , not only destroys the ecological environment, but also corrodes the combustion chamber and exhaust system of the engine, and poisons the catalyst in the vehicle exhaust converter. Therefore, most countries have very strict standards for the sulfur content of fuel oil. With the depletion of petroleum resources, the sulfur content of crude oil supplied in the domestic market is getting higher and higher, resulting in much higher sulfur content in fuel oil than abroad, far exceeding environmental protection requirements, so the research work on deep desulfurization of fuel oil is developed becomes especially important. At present, catalytic hydrodesulfurization (HDS) is the main means of desulfurization of fuel oil in industry, ...

Claims

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Application Information

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IPC IPC(8): C10G21/24C10G21/20C10G27/04
Inventor 王建龙李开喜
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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