Method for preparing catalytic gasoline alkylate desulphurization complex catalyst

A technology for alkylation desulfurization and catalytic gasoline, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Common problems, etc., to achieve the effect of easy availability, reduced sulfur content, and easy implementation

Inactive Publication Date: 2012-08-08
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The alkylation desulfurizers in the above patents have problems such as complicated preparation, uncommon raw materials, and relatively harsh reaction conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In a closed container containing 10g of anhydrous aluminum trichloride, add 20ml of toluene, stir evenly, and at the same time pass hydrogen chloride gas into the airtight container at a molar ratio of 1.2:1 to anhydrous aluminum trichloride, and add 6.37g of dichloromethane, the reaction temperature The temperature is 60°C, and the reaction time is 90min under continuous stirring; finally stop stirring, the reactant is divided into two phases, the upper phase is toluene and can be recycled after separation, the lower phase reactant is distilled at 105-115°C, and the remaining product is the complex Compound 1#.

[0018] Use catalytic gasoline with a sulfur content of 619 μg / g, and evaluate the complex catalyst according to the following method: In a container with condensation and reflux, add the catalyst by 1% of the mass ratio of agent to oil, start stirring, and the reaction temperature is 60°C. After 60 minutes of reaction, the upper layer oil was taken for distill...

Embodiment 2

[0020] In a closed container containing 10g of anhydrous aluminum trichloride, add 25ml of toluene, stir evenly, and at the same time pass hydrogen chloride gas into the airtight container at a molar ratio of 1.5:1 to anhydrous aluminum trichloride, and add 8.95g of trichloromethane, the reaction temperature The temperature is 70°C, and the reaction time is 70min under continuous stirring; finally stop stirring, the reactant is divided into two phases, the upper phase is toluene and can be recycled after separation, the lower phase reactant is distilled at 105-115°C, and the remaining product is the complex Compound 2#.

[0021] According to the evaluation method of Example 1, using catalytic gasoline with a sulfur content of 466 μg / g, the sulfur content of the gasoline after desulfurization is 276 μg / g, the desulfurization rate is 40.71%, and the mass yield is 89.88%.

Embodiment 3

[0023] In a closed container containing 10g of anhydrous aluminum trichloride, add 30ml of toluene, stir evenly, and at the same time pass hydrogen chloride gas into the airtight container at a molar ratio of 1.3:1 to anhydrous aluminum trichloride, and add 11.54g of carbon tetrachloride to react The temperature is 80°C, and the reaction time is 60min under continuous stirring; finally, the stirring is stopped, and the reactant is divided into two phases, the upper phase is toluene and can be recycled after separation, and the lower phase reactant is distilled at 105-115°C, and the remaining product is Complex 3#.

[0024] According to the evaluation method of Example 1, using catalytic gasoline with a sulfur content of 692 μg / g, the sulfur content of the gasoline after desulfurization is 389 μg / g, the desulfurization rate is 43.78%, and the mass yield is 82.56%.

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PUM

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Abstract

The invention relates to a method for preparing a catalytic gasoline alkylate desulphurization complex catalyst. The catalyst developed by the method provided by the invention can be used for effectively removing a organic sulphur compound in gasoline. The technical scheme adopted by the invention is as follows: firstly adding an organic solvent into a container filled with absolute aluminium trichloride in the proportion that 1.5-4.0ml of the organic solvent is added into per g of absolute aluminium trichloride, and uniformly stirring; then introducing hydrogen chloride into the mixture, or adding one or two or three of dichloromethane, trichloromethane, tetrachloromethane and normal heptane, and reacting for 60-90 minutes at the temperature of 60-80 DEG C; and finally stopping stirring,wherein the reactants are divided into two phases, the upper phase is the organic solvent which can be recycled after being separated, the lower reactant is distilled at the temperature of 80-310 DEGC, and the residual product is the complex catalyst prepared by the method. The method provided by the invention has the advantages that raw material source is wide, reaction is carried out at normalpressure and lower temperature and is easy to implement, and the preparation method is applied to petroleum refining and chemical production.

Description

technical field [0001] The invention relates to a preparation method of a complex catalyst used in petroleum refining industry or chemical production to catalyze the alkylation desulfurization of gasoline. The field of environmental catalysis for Friedel-Crafts alkylation reactions. Background technique [0002] The organic sulfur-containing compounds in gasoline are mainly thiophene, benzothiophene, sulfide, disulfide, mercaptan, dihydrobenzothiophene, etc., which generate SO after combustion X , which is the main source of acid rain, causing environmental pollution and damaging human health; SO X NO in car exhaust X It can significantly promote the emission of particulate matter, and may also poison the precious metal catalyst in the exhaust gas converter of the automobile, resulting in an increase in pollutant emissions; SO X It will also corrode the engine and reduce the life of the engine. Since most of the sulfur in gasoline comes from catalytic cracking gasoline (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C10G45/04
Inventor 唐晓东曾林汪芳卿大咏赖先熔李晶晶张华龙李晓贞
Owner SOUTHWEST PETROLEUM UNIV
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