A kind of sulfuric acid catalytic composite and its application in the production of alkylated gasoline

A compound and sulfuric acid technology, which is applied in the production of liquid hydrocarbon mixtures, catalytic reactions, chemical/physical processes, etc., can solve the problems of high price and complex molecular structure, and achieve the advantages of low price, low equipment corrosion, and reduced acid consumption. Effect

Active Publication Date: 2018-05-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently reported additives mainly include sulfolane, organic quaternary ammonium salts, 2-naphthalenesulfonic acid and surfactants, etc. These additives are not only complex in molecular structure, but also expensive

Method used

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  • A kind of sulfuric acid catalytic composite and its application in the production of alkylated gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First, add 150mL of sulfuric acid containing 0.5wt% caprolactam into the stainless steel stirred tank through a pump, feed nitrogen to evacuate, and control the pressure of the reactor at 0.3MPa, start stirring, and the speed is 1000r / min. When the temperature of the reactor was 12°C, 100 mL of a mixture of isobutane and butene (1-butene, 2-butene or isobutene) with an alkene ratio of 100:1 was added via a pump. After reacting for 10.5 minutes, stop stirring, open the vent valve, turn on the stirring tank, add a certain amount of extractant, take samples, and analyze the content of each component in the product by chromatography.

Embodiment 2

[0019] First, add 150mL of sulfuric acid containing 10.0wt% caprolactam into the stainless steel stirred tank through a pump, pass through nitrogen to evacuate, and control the pressure of 0.3MPa in the reactor, start stirring, and the speed is 1000r / min. When the temperature of the reaction kettle was 12°C, 100 mL of a mixture of isobutane and butene with an alkene ratio of 50:1 was added through a pump. After reacting for 10.5 minutes, stop stirring, open the vent valve, turn on the stirring tank, add a certain amount of extractant, take samples, and analyze the content of each component in the product by chromatography.

Embodiment 3

[0021] First, add 150mL of sulfuric acid containing 1.0wt% caprolactam into the stainless steel stirred tank through a pump, pass through nitrogen to evacuate, and control the pressure of 0.3MPa in the reactor, start stirring, and the speed is 1000r / min. When the temperature of the reaction kettle was 5°C, 100 mL of a mixture of isobutane and butene with an alkene ratio of 10:1 was added via a pump. After reacting for 10.5 minutes, stop stirring, open the vent valve, turn on the stirring tank, add a certain amount of extractant, take samples, and analyze the content of each component in the product by chromatography.

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PUM

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Abstract

The invention belongs to the technical field of chemical catalysis and in particular relates to a sulfuric acid catalysis compound and application thereof to production of alkylation gasoline. The sulfuric acid catalysis compound is prepared by adding an amide material which is used as an additive into concentrated sulfuric acid, wherein the content of the additive in the sulfuric acid catalysis compound is 0.5wt% to 10wt%. According to the sulfuric acid catalysis compound, the amide material is used as the additive, so that the cost is low; a C8 component in an alkylation gasoline product is high in selectivity, so that a small quantity of by-products can be generated; a catalysis system can be recycled, so that the acid consumption is reduced; a reaction system is low in corrosion to equipment.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and in particular relates to a sulfuric acid catalytic compound and its application in the production of alkylated gasoline. Background technique [0002] The alkylation process is a chemical reaction in which the active hydrogen atoms in alkanes are replaced by alkenes under the action of an acidic catalyst. Alkylation is widely used in industrial processes, among which the production of alkylate oil is a typical alkylation process. Alkylate oil has the characteristics of no aromatics, olefins, low sulfur, low Reid vapor pressure and high octane number. It is an ideal component of gasoline blender. Due to the many excellent properties above, the production process of alkylate has developed rapidly and has become an important process for the production of high-quality gasoline. [0003] Currently, concentrated sulfuric acid and hydrofluoric acid are the catalysts for the industrial p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02C10G50/00
CPCB01J31/0235B01J31/0244B01J2231/4205C10G50/00C10G2300/1081C10G2300/1088C10G2400/02
Inventor 骆广生李莲棠张吉松王凯
Owner TSINGHUA UNIV
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