Preparation method and production device of catalyst for cyclohexene preparation through benzene selective hydrogenation

A technology for hydrogenation and production equipment selection, applied in the chemical industry, can solve problems such as not being able to meet large-scale industrial production, achieve the effects of saving high-purity nitrogen and high-purity hydrogen, convenient operation, and guaranteed operating conditions

Active Publication Date: 2014-05-14
HEBEI SHIJIAO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalysts disclosed in the above documents and their preparation methods are all carried out under laboratory conditions, which cannot meet the requirements of large-scale industrial production.

Method used

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  • Preparation method and production device of catalyst for cyclohexene preparation through benzene selective hydrogenation
  • Preparation method and production device of catalyst for cyclohexene preparation through benzene selective hydrogenation
  • Preparation method and production device of catalyst for cyclohexene preparation through benzene selective hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation of embodiment 1 catalyst and activity evaluation thereof

[0030] (1) Preparation method

[0031] Salt solution configuration: weigh 15kg RuCl 3 wxya 2 O is put into salt box 8, adds 200L deionized water, dissolves under stirring. Alkali solution preparation: Add about 200L of deionized water at room temperature into the alkali tank 9, add 12kg of NaOH to stir the solution, and control the temperature at 50°C to 60°C.

[0032] Open the vacuum system, first introduce the lye through the liquid feed pipe 3, stir, and then introduce the salt solution. Maintain the temperature at 50° C. to 60° C., and stir for 6 hours. Stand and age for 12 hours.

[0033] Through the inlet pipe 2, high-purity nitrogen is passed into the aged high-pressure reactor for gas replacement, and then high-purity hydrogen is introduced. After the hydrogen pressure reaches 5MPa, heating and stirring are started. During the heating process, hydrogen is replenished in time to maint...

Embodiment 2

[0049] The preparation of embodiment 2 catalyst and activity evaluation thereof

[0050] (1) Preparation method

[0051] Salt solution configuration: weigh 15kg RuCl 3 wxya 2 O is put into the salt box 8, adds 200L deionized water, and dissolves under stirring. Alkali solution preparation: add about 200L room temperature deionized water in the alkali tank in 9, add 12kg NaOH to stir the solution, and control the temperature at 50°C to 60°C.

[0052] Open the vacuum system, first introduce the lye through the liquid feed pipe 3, stir, and then introduce the salt solution. Maintain the temperature at 50° C. to 60° C., and stir for 3 hours. Leave to age for 6 hours.

[0053] Through the inlet pipe 2, high-purity nitrogen is passed into the aged high-pressure reactor for gas replacement, and then high-purity hydrogen is introduced. After the hydrogen pressure reaches 4MPa, heating and stirring are started. During the heating process, hydrogen is replenished in time to maintai...

Embodiment 3

[0063] Example 3 Preparation of Catalyst and Evaluation of Its Activity

[0064] (1) Preparation method

[0065] Salt solution configuration: weigh 15kg RuCl 3 wxya 2 O is put into the salt box 8, adds 200L deionized water, and dissolves under stirring. Alkali solution preparation: Add about 200L of deionized water at room temperature into the alkali tank 9, add 12kg of NaOH to stir the solution, and control the temperature at 50°C to 60°C.

[0066] Open the vacuum system, first introduce the lye through the liquid feed pipe 3, stir, and then introduce the salt solution. Maintain the temperature at 50° C. to 60° C., and stir for 8 hours. Let stand and age for 8 hours.

[0067] Through the inlet pipe 2, high-purity nitrogen is passed into the aged high-pressure reactor for gas replacement, and then high-purity hydrogen is introduced. After the hydrogen pressure reaches 5MPa, heating and stirring are started. During the heating process, hydrogen is replenished in time to ma...

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Abstract

The invention discloses a production device of a catalyst for cyclohexene preparation through benzene selective hydrogenation and a method utilizing the device to prepare the catalyst. The production device comprises a high-pressure reaction system, a vacuum system, a control system and a tank system, can achieve multiple purposes through one kettle and one tank and is simple and convenient to operate. The preparation method comprises the operating steps of burdening, precipitation reaction, ageing, reduction and washing, and a prepared catalyst is stable in activity and suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a preparation method of a catalyst and production equipment thereof, in particular to a preparation method of a catalyst used in the selective hydrogenation of benzene to prepare cyclohexene and the production equipment thereof. Background technique [0002] The selective hydrogenation of benzene to cyclohexene has the characteristics of safety, energy saving, environmental protection and atom economy, and has huge industrial economic value and significant social benefits. In recent years, with the public's attention to environmental protection and sustainable development, benzene selective hydrogenation catalytic technology has attracted more and more attention. [0003] Since the selective hydrogenation of benzene is a continuous reaction, cyclohexene is an intermediate product, and the final product is cyclohexane, and the standard Gibbs free energy from benzene to cyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46C22B11/00B01J3/04C07C5/11C07C13/20
CPCY02P20/52
Inventor 刘寿长柴江文刘仲毅姜春普张栓民牛照科苏志强任树军栾振宇
Owner HEBEI SHIJIAO CHEM
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