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Process for alkylation of isoalkane and olefin

A technology of isoparaffin and alkylation reaction, which is applied in the field of addition of saturated hydrocarbons and unsaturated hydrocarbons, can solve problems such as impact on human body and ecological environment, pollution of ecological environment, corrosion of equipment and unsafe production operations, etc. Effect of Olefin Conversion

Inactive Publication Date: 2005-01-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkylation production of liquid acid will lead to serious environmental pollution. For example, hydrofluoric acid is a volatile and highly toxic chemical. Less dangerous than hydrofluoric acid, but requires disposal of large amounts of spent acid
[0004] The challenges faced by the production of alkylated gasoline have led people to actively develop alternative processes, such as the use of halogen-containing catalysts, but this cannot fundamentally solve the problems of pollution to the ecological environment, corrosion of equipment, and unsafe production operations during production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This example illustrates the nano-beta molecular sieve / SiO 2 preparation.

[0029] Dissolve 20.8 g of ethyl orthosilicate (produced by Beijing Chemical Reagent Company, analytically pure) in 5.76 g of absolute ethanol (Beijing Chemical Plant, analytically pure), and add it dropwise to 100 ml of 0.01M HCl under stirring to obtain silicon hydrolysis The final clarified sol (pH=2), then 28.8g of nano-beta molecular sieve slurry (molecular sieve concentration in the slurry is 38% by weight, adjust its pH=14 with 0.8M NaOH) is added to the above-mentioned silica sol under stirring, and the sol is A gel was formed within 10-20 seconds (the pH of the gel was measured to be 9 with precision pH test paper). The resulting gel was dried at 40° C. to obtain a composite xerogel containing 65% molecular sieve. Grind the product, sieve 40-60 mesh particles, beat and wash twice with hot water at 60°C, then exchange ammonium with 400ml of 1N ammonium chloride solution for 4 times, eac...

Embodiment 2

[0032] This example illustrates the nano-beta molecular sieve / SiO 2 preparation.

[0033] Add 3.84 g of nano-beta molecular sieve slurry (molecular sieve concentration in the slurry is 38% by weight, adjust its pH=13 with 0.8M NaOH) to 22.5 g of acidic inorganic silica sol (commercial product of Beijing Changhong Chemical Factory, SiO 2 The content is 25.9% by weight, pH=1.6), the sol forms a gel within 10-20 seconds (the pH of the gel is measured by precision pH test paper=7.5). The resulting gel was dried at 40° C. to obtain a composite xerogel containing 20% ​​molecular sieve. Grind the product, sieve 40-60 mesh particles, beat and wash twice with hot water at 60°C, then exchange ammonium with 400ml of 1N ammonium chloride solution for 4 times, each time for 2 hours, and filter after each exchange , washing, and drying at 110° C. for 2 hours to obtain an ammonium-type product. Recorded as B2, SiO 2 The weight ratio to β molecular sieve is 4.

[0034] According to the m...

Embodiment 3

[0036] Description Nano Beta Molecular Sieve / Al 2 o 3 preparation.

[0037] 1.68g of nano-beta molecular sieve slurry JY (molecular sieve concentration in the slurry is 38% by weight, and its pH=13) is added to 7.3g of acidic aluminum sol (commercial product of Qilu Petrochemical Company Catalyst Factory, made by the reaction of metal aluminum and hydrochloric acid) under stirring. al 2 o 3 The content is 35% by weight, pH = 1.5), the sol rapidly forms a gel within 5-10s (the pH of the gel is measured by precision pH test paper = 8). The resulting gel was dried at 70°C to obtain a composite xerogel containing 65% molecular sieve. Grind the product, sieve 40-60 mesh particles, beat and wash twice with hot water at 60°C, then exchange ammonium with 400ml of 1N ammonium chloride solution for 4 times, each time for 2 hours, and filter after each exchange , washing, and drying at 110° C. for 2 hours to obtain an ammonium-type product. Recorded as B3, Al 2 o 3 The weight rat...

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PUM

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Abstract

The invention discloses a process for alkylation of isoalkane and olefin, which comprises subjecting reaction raw material containing isoalkane and alkene to alkylation reaction at the presence of solid acid catalyst and a dielectric, wherein the solid acid catalyst is a composite material consisting of SiO2 and / or Al2O3 with nano beta molecular sieve, said dielectric being mixture of one or more selected from, C2-C6 oxygen-containing organic compound, C2-C6 halogen-containing organic compound, C3-C16 saturated aliphatic hydrocarbon.

Description

technical field [0001] The present invention relates to a method for addition of saturated hydrocarbons and unsaturated hydrocarbons, and more specifically relates to an alkylation reaction method of isoparaffins and olefins. Background technique [0002] The alkylation reaction of isoparaffins and olefins (hereinafter referred to as alkylation) mainly refers to the reaction of isoparaffins with C 3 -C 5 A process for the reaction of olefins to generate alkylate oil, in which the catalytic cracking reaction product C in the petrochemical industry is 4 The conversion of hydrocarbon components to C8 branched chain isooctanes (alkylated gasoline) is the most important. Since the advent of this reaction in 1926, it has been industrialized very quickly. Since the 1950s, the production of alkylated oil has continued to increase significantly. Alkylation has become an important process in the petrochemical industry. Alkylated gasoline has the characteristics of high octane numbe...

Claims

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Application Information

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IPC IPC(8): C07C2/62
Inventor 付强王永睿谢文华慕旭宏宗保宁闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
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