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Method for catalytically preparing alkylated gasoline

A technology for alkylated gasoline and catalytic preparation, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc. And the effect of easy post-treatment, stable catalytic ability, and simple treatment

Active Publication Date: 2020-08-07
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These catalysts overcome the defects of traditional acid catalysts to a certain extent, and reduce equipment corrosion and environmental pollution. To some extent, their industrial applications are limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: adopt rare earth Lewis acid scandium trichloride as catalyst, according to the ratio of the amount of substance of isobutane and isobutene 10:1, the ratio of the mixed solution of isobutane and isobutene and catalyst scandium trichloride quality 100: 1. Put it into a closed reaction kettle equipped with magnetic stirring and thermocouple thermometer, heat and stir for reaction, under the conditions of reaction temperature 30°C and reaction time 4h, prepare alkylated gasoline, after the reaction, settle still and cool to room temperature, collect the kettle Residual gas, the reaction mixture is divided into two phases, the lower phase is the catalyst phase, and the upper phase is alkylated gasoline. After phase separation, the product alkylated gasoline is obtained, and the components of the residual gas and the liquid phase product are determined by gas chromatography. content, and the calculated isobutene conversion rate was 97.5%, the TMP selectivity was ...

Embodiment 2

[0020] Embodiment 2: Using rare earth Lewis acid scandium trifluoromethanesulfonate as catalyst, according to the ratio of the amount of substance of isobutane and isobutene 10:1, the mixed solution of isobutane and isobutene and the mass of catalyst scandium trifluoromethanesulfonate The ratio of 100:1 is put into a closed reaction kettle equipped with magnetic stirring and thermocouple thermometer, heated and stirred for reaction, under the conditions of reaction temperature 30°C and reaction time 4h, alkylated gasoline is prepared, and after the reaction, it settles still and cools to At room temperature, collect the residual gas in the kettle, and the reaction mixture is divided into two phases, the lower phase is the catalyst phase, and the upper phase is the alkylated gasoline. After phase separation, the product alkylated gasoline is obtained, and the residual gas and the liquid phase product are determined by gas chromatography. The content of each component is calculat...

Embodiment 3

[0021] Embodiment 3: using rare earth Lewis acid trimethoxy scandium as a catalyst, according to the ratio of the amount of substance of isobutane and isobutene 10:1, the ratio of the mixed solution of isobutane and isobutene to the catalyst trimethoxy scandium mass ratio 100: 1. Put it into a closed reaction kettle equipped with magnetic stirring and thermocouple thermometer, heat and stir for reaction, under the conditions of reaction temperature 30°C and reaction time 4h, prepare alkylated gasoline, after the reaction, settle still and cool to room temperature, collect the kettle Residual gas, the reaction mixture is divided into two phases, the lower phase is the catalyst phase, and the upper phase is alkylated gasoline. After phase separation, the product alkylated gasoline is obtained, and the components of the residual gas and the liquid phase product are determined by gas chromatography. content, and the calculated isobutene conversion rate was 98.5%, the TMP selectivit...

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Abstract

The invention relates to a method for catalytically preparing alkylated gasoline. The method is characterized in that a rare earth Lewis acid trivalent scandium salt is adopted as a catalyst, and thealkylated gasoline is prepared under the conditions that the molar ratio of isobutane to C4 olefin is 5:1 to 30:1, the mass ratio of a mixed solution of isobutane and C4 olefin to the catalyst is 20:1to 200:1, the reaction temperature is 5-60 DEG C and the reaction time is 3-8 h. Compared with the traditional method, the method has the following characteristics: the catalyst has stable catalyticcapability; the post-treatment of the product is simple, and the obtained alkylated gasoline product is stable and good in quality, is immiscible with a catalyst and is automatically layered, so thatthe separation and the post-treatment of the product are easy; and the catalyst has good reusability.

Description

technical field [0001] The invention relates to a method for catalyzing the preparation of alkylated gasoline, which involves a rare earth scandium Lewis salt catalyzed isobutane and C 4 A new method for the production of alkylated gasoline by the alkylation reaction of olefins. Background technique [0002] In recent years, with the rapid development of the economy and the continuous improvement of people's living standards, automobiles have become a means of transportation for people's daily life. With the popularity of automobiles, the fuel performance of automobiles has attracted more and more attention. The alkylation reaction of isobutane and butene is one of the important processes in the petroleum refining industry, and the products obtained are mainly isomeric C 8 A mixture of alkanes (trimethylpentane TMP and dimethylhexane DMH), known as alkylated gasoline. High-octane alkylated gasoline has the advantages of high octane number, low vapor pressure, and no non-hy...

Claims

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Application Information

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IPC IPC(8): C10G50/00
CPCC10G50/00C10G2300/1081C10G2300/1092C10G2400/02
Inventor 王志萍刘仕伟刘悦于海龙于世涛吴琼李露刘毓翔于聪宋湛谦
Owner QINGDAO UNIV OF SCI & TECH
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