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A kind of sulfuric acid catalyzes the method for producing alkylated gasoline

A technology for alkylating gasoline and sulfuric acid, which is used in the production of liquid hydrocarbon mixtures and the petroleum industry. It can solve the problems of poor self-stability, harsh water content requirements, and slow industrialization process. , the effect of low acid consumption

Active Publication Date: 2016-01-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

China University of Petroleum (Beijing) uses modified chloroaluminate-type ionic liquids to catalyze the alkylation reaction of isobutane and butene, which can be close to or reach the level of industrial sulfuric acid alkylation, but due to the AlCl 3 Type ionic liquids have defects such as strict requirements on water content and poor self-stability, and the industrialization process is slow

Method used

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  • A kind of sulfuric acid catalyzes the method for producing alkylated gasoline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Pour 100ml (184g) of concentrated sulfuric acid into the reaction kettle, then add 5ml (6.0g) of ethyl methanesulfonate (Bailingwei Technology Co., Ltd., purity >99%), replace the air in the reaction kettle with nitrogen, start stirring and refrigeration . Adjust the stirring speed to 1200r / min, control the temperature at 8°C, and control the pressure at 0.4MPa. Use a pump to pump 100ml of isobutane and olefin mixed raw materials with a volume ratio of alkanes to 8:1 to carry out the alkylation reaction for 8 minutes. After the reaction is completed, the stirring is stopped, and the reaction product and the catalyst are statically layered, the lower layer is the catalyst, and the upper layer is the reaction product alkylate oil, and the reaction product alkylate oil is obtained after separation.

Embodiment 2

[0032]Pour 100ml (184g) of concentrated sulfuric acid into the reaction kettle, then add 5ml (6.0g) of ethyl methanesulfonate (Bailingwei Technology Co., Ltd., purity >99%), replace the air in the reaction kettle with nitrogen, start stirring and refrigeration . Adjust the stirring speed to 1200r / min, control the temperature at 5°C, and control the pressure at 0.4MPa. Use a pump to pump 100ml of isobutane and olefin mixed raw materials with a volume ratio of alkanes to 8:1 to carry out the alkylation reaction for 8 minutes. After the reaction is completed, the stirring is stopped, and the reaction product and the catalyst are statically layered, the lower layer is the catalyst, and the upper layer is the reaction product alkylate oil, and the reaction product alkylate oil is obtained after separation.

Embodiment 3

[0034] Pour 100ml (184g) of concentrated sulfuric acid into the reaction kettle, then add 5.6g of methyl 4-toluenesulfonate (Bailingwei Technology Co., Ltd., purity >98%), replace the air in the reaction kettle with nitrogen, and start stirring and refrigeration. Adjust the stirring speed to 1200r / min, control the temperature at 8°C, and control the pressure at 0.4MPa. Use a pump to pump 100ml of isobutane and olefin mixed raw materials with a volume ratio of alkanes to 8:1 to carry out the alkylation reaction for 8 minutes. After the reaction is completed, the stirring is stopped, and the reaction product and the catalyst are statically layered, the lower layer is the catalyst, and the upper layer is the reaction product alkylate oil, and the reaction product alkylate oil is obtained after separation.

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Abstract

The invention relates to a method for producing alkylation gasoline by catalysis of sulfuric acid, which is characterized in that under alkylation reaction condition, isobutane and C4 alkene are subjected to a contact reaction under existence of sulfuric acid and sulfonate and then the alkylation gasoline is recovered, and the sulfonate accounts for 0.05-15% of weight of concentrated sulfuric acid. Compared with a no-co-catalyst sulfuric acid method, the method has the advantages of low acid consumption, low corrosivity to equipment, less generation amount of by-product, simple subsequent processing and low operation cost of the alkylation technology.

Description

technical field [0001] The present invention relates to a method for producing alkylate, more particularly the present invention relates to a method for sulfuric acid catalyzed production of alkylate. Background technique [0002] With the rapid development of the automobile industry and the increasingly stringent emission standards of automobile exhaust, the demand for clean gasoline production is increasing all over the world. from isobutane and C 4 Alkylation of alkenes to C 8 The branched chain isooctane product, that is, alkylate, has the advantages of high octane number, good antiknock performance, no olefins and aromatics, low sulfur content, and low vapor pressure. It is the most ideal blending component for clean gasoline. [0003] At present, there are mainly sulfuric acid method and hydrofluoric acid method for producing alkylated oil in industry. Among them, the sulfuric acid method has a large amount of waste acid discharge and serious environmental pollution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G50/00
Inventor 喻惠利董明会温朗友俞芳郜亮夏玥穜
Owner CHINA PETROLEUM & CHEM CORP