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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 operating costs and reducing production costs

Inactive Publication Date: 2007-11-28
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Catalyst preparation:

[0024] As an illustrative example, the catalyst [(C 18 h 37 )N + (CH 3 ) 3 ][PW 3 o q ] can be prepared as follows: Weigh 1.87g of tungstic acid and suspend in 10.0ml of hydrogen peroxide, stir vigorously in an oil bath at 60°C for 30min, dissolve, and cool down to room temperature; weigh and weigh 0.39g of sodium dihydrogen phosphate, dissolve in 5ml of water, Stir at room temperature for 5 minutes, add it into the hydrogen peroxide solution of tungstic acid, stir, and adjust the pH to 2-3; then take 2.6g of quaternary ammonium salt octadecyltrimethylammonium chloride and dissolve it in 10ml of absolute ethanol, Add dropwise to the above mixed solution while vigorously stirring to form a white precipitate immediately. The dropwise addition time is 1-2h, and continue to stir for 3-4h; finally, filter, wash with deionized water, and vacuum-dry to obtain a white solid catalyst. called catalyst A.

Embodiment 2

[0026] Same as Example 1, except that the phosphorus-tungsten ratio is 1:1, called catalyst C.

Embodiment 3

[0028] Same as Example 1, except that the phosphorus-tungsten ratio is 1:5, called catalyst D.

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PUM

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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 production method of ultra-low sulfur gasoline. Background technique [0002] With the strengthening of people's awareness of environmental protection, the problem of automobile exhaust pollution has been paid more and more attention. Government organizations of various countries have enacted new environmental regulations one after another, stipulating new standards for various types of fuel oil, and strictly restricting 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 1000ppm. In 1995, the sulfur content standard had dropped to less than 330ppm. In 2006, the sulfur content should be reduced to below 30ppm; It has dropped from 1000ppm in 1989 to less than 50ppm at present. Germany passed legislation in November 2001 to limit the sulfur conten...

Claims

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Application Information

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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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