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High-efficiency and environmental-friendly gasoline desulphurization method

A gasoline, high-efficiency technology, applied in the field of chemical desulfurization, can solve the problem of gasoline octane loss and other problems, achieve the effect of improving adsorption capacity, convenient operation and low cost

Inactive Publication Date: 2016-03-02
QINGDAO XINRUNTU NURSERY STOCK SPECIALIZED COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hydrogenation process can effectively remove sulfur compounds in gasoline, it will also hydrogenate and saturate the olefin components with a higher octane number in gasoline, resulting in a large loss of gasoline octane number

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A gasoline efficient and environmentally friendly desulfurization method is characterized in that it specifically comprises the following steps:

[0022] (1) Preliminary desulfurization: According to the molar ratio of 1:4, FeCl3 and KH2PO4 solutions were mixed and stirred evenly, 3% ionic liquid was added to the gasoline sample, the reaction temperature was controlled at 32°C, and the reaction was stirred for 25 minutes to realize partial sulfur removal in gasoline. Remove;

[0023] (2) Oxidative desulfurization: put the above reaction liquid into the autoclave, replace the air in the autoclave with nitrogen for 3 times, then fill with 0.8MPa oxygen, heat to a temperature of 140°C, and add 3% of Dibenzothiophene, start magnetic stirring, react for 8h;

[0024] (3) Collect crystals by filtration: filter the above liquid under reduced pressure to obtain dibenzothiophene sulfone crystals, and use the filtrate for later use;

[0025] (4) Preparation of activated carbon a...

Embodiment 2

[0029] A gasoline efficient and environmentally friendly desulfurization method is characterized in that it specifically comprises the following steps:

[0030] (1) Preliminary desulfurization: According to the molar ratio of 1:5, FeCl3 and KH2PO4 solutions were mixed and stirred evenly, 4% ionic liquid was added to the gasoline sample, the reaction temperature was controlled at 33 °C, and the reaction was stirred for 20 minutes to realize partial sulfur removal in gasoline. Remove;

[0031] (2) Oxidative desulfurization: put the above reaction liquid into the autoclave, replace the air in the autoclave with nitrogen for 3 times, then fill it with 0.9MPa oxygen, heat to a temperature of 143°C, and add 4% of Dibenzothiophene, start magnetic stirring, react for 7h;

[0032] (3) Collect crystals by filtration: filter the above liquid under reduced pressure to obtain dibenzothiophene sulfone crystals, and use the filtrate for later use;

[0033] (4) Preparation of activated carb...

Embodiment 3

[0037] A gasoline efficient and environmentally friendly desulfurization method is characterized in that it specifically comprises the following steps:

[0038] (1) Preliminary desulfurization: According to the molar ratio of 1:5, FeCl3 and KH2PO4 solutions were mixed and stirred evenly, 5% ionic liquid was added to the gasoline sample, the reaction temperature was controlled at 35°C, and the reaction was stirred for 15 minutes to realize partial sulfur removal in gasoline. Remove;

[0039] (2) Oxidative desulfurization: put the above reaction liquid into the autoclave, replace the air in the autoclave with nitrogen for 3 times, then fill with 1.0MPa oxygen, heat to a temperature of 145°C, and add 5% of Dibenzothiophene, start magnetic stirring, react for 6h;

[0040] (3) Collect crystals by filtration: filter the above liquid under reduced pressure to obtain dibenzothiophene sulfone crystals, and use the filtrate for later use;

[0041] (4) Preparation of activated carbon a...

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PUM

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Abstract

The invention discloses a high-efficiency and environmental-friendly gasoline desulphurization method. The method is characterized by including the following steps: (1) performing preliminary desulphurization: preparing an ionic liquid; (2) performing oxidation desulphurization: filling a reactor with oxygen, adding dibenzothiophene, stirring the mixture with a magnetic stirrer; (3) performing filtration to collect crystals; (4) preparing an active carbon adsorption plate: adding active carbon into a alkali liquor, passing ozone gas with stirring; and (5) sprinkling the filtrate prepared by step (3) to the prepared active carbon adsorption plate in a certain flow rate, performing liquid vacuum distillation, and recycling the desulfurized gasoline. The preliminary desulfurization rate reaches over 30%, and the additional product dibenzothiophene sulfone is obtained in desulphurization. The desulphurization method improves the adsorption capacity of the sulfide in the fuel oil, has high desulphurization efficiency and convenient operation, and is safe and without pollution.

Description

technical field [0001] The invention belongs to the technical field of chemical desulfurization, and in particular relates to an efficient and environment-friendly desulfurization method for gasoline. Background technique [0002] The appearance of gasoline is a transparent liquid, mainly composed of C4~C10 hydrocarbons, with high octane number and excellent anti-knock performance, and is used in carburetor gasoline engines with high compression ratio. With the continuous increase of consumption, the harm to the environment is also becoming more and more serious. SOx emitted from gasoline combustion is one of the important factors that form acid rain and cause air pollution. In order to meet the requirements of environmental protection and improve the international competitiveness of my country's oil products, it has become a top priority to carry out research on gasoline desulfurization technology. [0003] As people pay more and more attention to environmental protection...

Claims

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Application Information

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IPC IPC(8): C10G53/14C07D333/76
Inventor 刘泽华
Owner QINGDAO XINRUNTU NURSERY STOCK SPECIALIZED COOP
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