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FCC (fluid catalytic cracking) gasoline oxidative desulfurization method based on methylrhenium trioxide coupled ionic liquid

A technology of methyl rhenium trioxide and ionic liquid is applied in the field of FCC gasoline desulfurization to achieve high removal rate, simple method and high desulfurization efficiency

Inactive Publication Date: 2012-10-17
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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AI Technical Summary

Problems solved by technology

However, the technology of coupling catalyst MTO with ionic liquid to form catalytic oxidation-extraction desulfurization reaction has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1 A method for oxidative desulfurization of FCC gasoline based on methyl rhenium trioxide coupling ionic liquid

[0011] Using simulated FCC gasoline as raw material. Preparation of simulated FCC gasoline: 1 mL of thiophene and 1 g of dibenzothiophene were dissolved in 675 mL of n-octane to prepare simulated FCC gasoline with an S content of about 850 ppm.

[0012] To 1 mL of ionic liquid [BMIM]BF 4 , add 1% catalyst MTO and 0.1 mL of 30% H 2 o 2 solution, mixed with 5 mL of simulated FCC gasoline, at this time the ionic liquid phase was in the lower layer, the oil phase was in the upper layer, catalyst and H 2 o 2 Dissolve in ionic liquid, stir magnetically at 70°C for 1 hour, and take the oil phase, which is desulfurized FCC gasoline.

[0013] The sulfur content in the oil phase was detected by a gas chromatograph, and the sulfur removal rate was calculated to be 98.5%, and the sulfur content was 13 ppm.

Embodiment 2

[0017] Example 2 A method for oxidative desulfurization of FCC gasoline based on methyl rhenium trioxide coupling ionic liquid

[0018] The raw material is FCC gasoline provided by PetroChina Fushun Petrochemical Company No. 2 Petroleum Plant, the sulfur content in the raw material is about 850ppm, and the distillation range is 60-200°C.

[0019] To 1 mL of ionic liquid [BMIM]BF 4 , add 2% catalyst MTO and 0.2 mL of 30% H 2 o 2 solution, mixed with 10 mL of FCC gasoline, at this time the ionic liquid phase is in the lower layer, the oil phase is in the upper layer, catalyst and H 2 o 2 Dissolve in the ionic liquid, stir magnetically at 50°C for 2 hours, and take the oil phase, which is the desulfurized FCC gasoline.

[0020] The TS-2000 ultraviolet fluorescent sulfur detector was used to detect the sulfur content in the oil phase, and the calculated sulfur removal rate was 97.6%, and the S content was 20 ppm.

[0021] After desulfurization, the performance indicators su...

Embodiment 3

[0025] Example 3 A method for oxidative desulfurization of FCC gasoline based on methyl rhenium trioxide coupling ionic liquid

[0026] To 1 mL of ionic liquid [BMIM]HSO 4 , add 0.5% catalyst MTO and 0.1 mL of 30% H 2 o 2 Solution, with 30 mL of FCC gasoline (commercially available product), at this time the ionic liquid phase is in the lower layer, the oil phase is in the upper layer, catalyst and H 2 o 2 Dissolve in ionic liquid, stir magnetically at 30°C for 0.5h, and take the oil phase, which is desulfurized FCC gasoline.

[0027] The TS-2000 ultraviolet fluorescent sulfur detector was used to detect the sulfur content in the oil, and the calculated sulfur removal rate was 98.4%, and the sulfur content was 14ppm.

[0028] After desulfurization, the performance indicators such as octane number, distillation range, saturated vapor pressure and chromaticity have not changed significantly after testing.

[0029] The above examples show that the purpose of deep removal o...

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PUM

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Abstract

The invention relates to an FCC (fluid catalytic cracking) gasoline oxidative desulfurization method based on a methylrhenium trioxide coupled ionic liquid. The technical scheme is as follows: mixing methylrhenium trioxide, an ionic liquid, oxydol and FCC gasoline, reacting at 30-70 DEG C for 0.5-2 hours, carrying out phase separation on the ionic liquid, and taking the oil phase. Compared with traditional extractive desulfurization and oxidative desulfurization methods, the FCC gasoline oxidative desulfurization method provide by the invention enhances the desulfurization effect from about 50% to more than 90%. The invention has the advantages of simple reaction system, environment friendliness, mild reaction conditions, simple equipment and the like, and the ionic liquid can be repeatedly regenerated and reutilized.

Description

technical field [0001] The invention belongs to the field of FCC gasoline desulfurization methods, in particular to a catalytic oxidation-extraction desulfurization method of FCC gasoline based on methyl rhenium trioxide coupling ionic liquid. Background technique [0002] With the increasingly stringent environmental protection regulations in the world, the oil refining industry is facing huge challenges in terms of production and environmental protection in response to new fuel standards. Petroleum companies at home and abroad are also actively researching and developing clean fuel oil production technologies. In view of the stricter requirements on the sulfur content in oil products all over the world, the production of clean oil products with low sulfur content has become a top priority. [0003] Vehicle fuel oil desulfurization technologies mainly include hydrodesulfurization, catalytic cracking desulfurization, adsorption desulfurization, extraction desulfurization, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/12
Inventor 臧树良周明东王强陈平李杨颜文超肖晶张新月
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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