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Method for preparing long-chain alkylbenzene from long-chain olefin

A technology for long-chain alkylbenzene and long-chain olefins, which is applied in the field of preparation, can solve the problems of large environmental pollution, low lifespan, and low catalytic activity of long-chain alkylbenzenes, and achieves low environmental pollution, good adsorption and richness. The effect of aluminum-rich mesopores

Inactive Publication Date: 2018-03-20
LUTIAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies in the prior art, and provide a method for preparing long-chain alkylbenzenes from long-chain olefins, so as to solve the problems of low catalytic activity, large environmental pollution, and low service life of long-chain alkylbenzenes in the existing methods. Waiting question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing long-chain alkylbenzenes with long-chain olefins:

[0023] Preparation of aluminum-rich mesoporous organic hybrid zeolite catalyst particles: Stir and mix sodium metaaluminate, cetyl ammonium bromide, tetraethylorthosilicate, and deionized water in a mass ratio of 1.05:1:6:40 After uniformity, add sodium metaaluminate and cetyl ammonium bromide total mass of 1,2 trimethoxysilyl ethane and stand at room temperature for 12 hours, then filter, wash, separate and dry the sediment. The aluminum-rich mesoporous organic hybrid zeolite catalyst has a particle range of 20 mesh and a specific area of ​​200m 2 / g, average pore diameter 998nm, Si / Al=3.

[0024] Preparation of long-chain alkylbenzene: Si / Al=3, specific area is 200m 2 Al-rich mesoporous organic hybrid zeolite catalyst particles with an average pore diameter of 998nm and a particle size of 20 meshes were placed in a hydrofluoric acid solution, soaked overnight, washed with distilled water, and...

Embodiment 2

[0026] A method for preparing long-chain alkylbenzenes with long-chain olefins

[0027] Preparation of aluminum-rich mesoporous organic hybrid zeolite catalyst particles: Stir and mix sodium metaaluminate, cetyl ammonium bromide, tetraethylorthosilicate, and deionized water in a mass ratio of 1.05:1:5:40 After uniformity, add sodium metaaluminate and cetyl ammonium bromide total mass of 1,2 trimethoxysilyl ethane and stand at room temperature for 8 hours, then filter, wash, separate and dry the sediment. The aluminum-rich mesoporous organic hybrid zeolite catalyst has a particle size of 28 mesh and a specific area of ​​267m 2 / g, average pore size 1021nm, Si / Al=4.

[0028] Preparation of long-chain alkylbenzene: Si / Al=4, particle range 28 mesh, specific area 267m 2 / g, aluminum-rich mesoporous organic hybrid zeolite catalyst particles with an average pore diameter of 1021nm were placed in a phosphoric acid solution, soaked overnight, washed with distilled water, and dried to...

Embodiment 3

[0030] A method for preparing long-chain alkylbenzenes with long-chain olefins

[0031]Preparation of aluminum-rich mesoporous organic hybrid zeolite catalyst particles: Stir and mix sodium metaaluminate, cetyl ammonium bromide, tetraethylorthosilicate, and deionized water in a mass ratio of 1.05:1:4:40 After uniformity, add sodium metaaluminate and cetyl ammonium bromide total mass of 1,2 trimethoxysilyl ethane and stand at room temperature for 9 hours, then filter, wash, separate and dry the sediment. The aluminum-rich mesoporous organic hybrid zeolite catalyst has a particle range of 30 mesh and a specific area of ​​238m 2 / g, average pore size 1068nm, Si / Al=2.

[0032] Preparation of long-chain alkylbenzene: Si / Al=2, particle range 30 mesh, specific area 238m 2 / g, aluminum-rich mesoporous organic hybrid zeolite catalyst particles with an average pore diameter of 1068nm were placed in hydrochloric acid solution, soaked overnight, washed with distilled water, and dried to...

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Abstract

The invention discloses a method for preparing long-chain alkylbenzene from long-chain olefin. Aluminum-enriched mesoporous organic hybrid zeolite catalysts are soaked in an acidic solution; after thedrying, the catalysts are loaded onto a fluidized bed reactor; olefin and methylbenzene or xylene are respectively introduced for performing olefin alkylate catalysis reaction; obtained alkylbenzeneand unreacted methylbenzene or xylene solution are subjected to condensation separation; the unreacted methylbenzene or xylene solution is metered by a circulation pump and is then mixed with the olefin; the mixture is continuously used as raw materials to return a reactor to participate in the olefin alkylate reaction. The aluminum-enriched mesoporous organic hybrid zeolite catalysts are used forolefin alkylate reaction; the olefin conversion rate is high; the conversion rate is greater than or equal to 97 percent; meanwhile, the catalysts have the rich aluminum-enriched mesopores; the sidereactions are few; the catalysis activity is high; no chloride ion is contained; no corrosion is caused on the equipment; the environment pollution is small. The process has the advantages that the olefin alkylate reaction preparation process is simple; the process is suitable for industrial enlarged production; the wide application prospects are realized.

Description

technical field [0001] The present invention relates to a preparation method of oilfield chemicals, in particular to a zeolite catalyst with an aluminum-rich mesoporous organic hybrid, which uses a fixed fluidized bed to alkylate long-chain olefins to prepare long-chain alkylbenzenes. , belongs to the technical field of petroleum processing. Background technique [0002] Alkylbenzene sulfonate (LAS) is an important oil displacement surfactant in oil extraction, it can be produced by C 5 ~C 26 The long-chain olefins and benzene series are alkylated under the action of a catalyst to obtain alkylbenzenes, and finally through fuming sulfuric acid or SO 3 obtained by sulfonation. Generally, the catalysts used in the alkylation reaction mainly include hydrofluoric acid, aluminum trichloride, and ionic liquids. The hydrofluoric acid method is currently the first to be applied commercially. Using hydrofluoric acid as an alkylation catalyst, the conversion rate of LAS is as high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/66C07C15/107B01J29/04B01J31/26B01J35/10
CPCC07C2/66B01J29/041B01J31/26C07C2531/26C07C2529/04B01J2229/37B01J2231/32B01J35/615B01J35/653B01J35/657C07C15/107Y02P20/52
Inventor 辜凯德蒋弟勇龙平陈钢宁忠培谭光军刘孔满
Owner LUTIAN CHEM CORP
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