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Preparation method of ultra low-sulfur oil

An ultra-low-sulfur gasoline technology, applied in the direction of refining with oxygen-containing compounds, can solve the problems of reducing operating costs, disadvantages, and oil products that cannot meet the requirements of ultra-low-sulfur gasoline, and achieve the effect of reducing production costs and operating costs

Inactive Publication Date: 2010-10-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

UOP's patent USP 6,368,495 discloses an oxidation / decomposition combined desulfurization technology, which first oxidizes sulfur-containing organic compounds in oil to sulfones, and then catalytically decomposes the oxidized organic sulfur species into hydrocarbons and sulfur compounds (as SO 2 ), but the decomposition of sulfone in this process needs to be carried out under relatively high temperature and pressure, which is not conducive to reducing operating costs, and the obtained oil cannot meet the requirements of ultra-low sulfur gasoline

Method used

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  • Preparation method of ultra low-sulfur oil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of catalyst:

[0024] As an illustrative example, the catalyst [(C 18 H 37 )N + (CH 3 ) 3 ][PW 3 O q ] can be prepared as follows: 1.87g of tungstic acid is weighed and suspended in 10.0ml of hydrogen peroxide, vigorously stirred in an oil bath at 60°C for 30min, dissolved, and cooled to room temperature; 0.39g of sodium dihydrogen phosphate is weighed and dissolved in 5ml of water, Stir at room temperature for 5 min, add it to the hydrogen peroxide solution of tungstic acid, stir to adjust pH=2-3; then take 2.6 g of quaternary ammonium salt octadecyl trimethyl ammonium chloride and dissolve it in 10 ml of absolute ethanol, Drop into the above mixed solution and stir vigorously at the same time, a white precipitate is formed immediately, the dropwise addition time is 1-2h, and the stirring is continued for 3-4h; finally, it is filtered, washed with ionized water, and vacuum-dried to obtain a white solid catalyst. called catalyst A.

Embodiment 2

[0026] The same as in Example 1, except that the ratio of phosphorus to tungsten is 1:1, which is called catalyst C.

Embodiment 3

[0028] The same as in Example 1, except that the ratio of phosphorus to tungsten is 1:5, which is called catalyst D.

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Abstract

The process of preparing gasoline with ultralow sulfur content includes the following main steps: mixing and reacting gasoline with catalyst Qnn+Hm[ABXOY](m+n)- and hydrogen peroxide solution to convert the organic sulfide in the gasoline into SO2 and sulfone and to obtain oxidized gasoline, separating out catalyst Qnn+Hm[ABXOY](m+n)- from the oxidized gasoline and recovering catalyst, and washing the oxidized gasoline with distilled water to eliminate its sulfone and to obtain gasoline with ultralow sulfur content below 50 ppm.

Description

technical field [0001] The invention relates to a method for producing ultra-low sulfur gasoline. Background technique [0002] With the strengthening of people's awareness of environmental protection, more and more attention has been paid to the problem of automobile exhaust emission pollution. Government organizations in various countries have successively formulated new environmental regulations and stipulated new standards for various types of fuel oil, and strictly limited the sulfur content, benzene content, aromatic hydrocarbon content, and olefin content. Especially the sulfur content, taking gasoline as an example, the sulfur content standard implemented in the United States from the late 1980s was 1000 ppm. It has dropped from 1000ppm in 1989 to less than 50ppm today. Germany passed legislation in November 2001 to limit the sulfur content in gasoline and gasoline to 10ppm. Japan has dropped from 2000ppm in 1993 to less than 500ppm in 1997. But my country's curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G27/12
Inventor 李灿吕宏缨景飞蒋宗轩高金波
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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