Check patentability & draft patents in minutes with Patsnap Eureka AI!

A production system and preparation method of a catalyst for the selective hydrogenation of benzene to cyclohexene

A technology for selective hydrogenation and production systems, applied in the production of bulk chemicals, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effect of shortening the preparation cycle

Active Publication Date: 2017-11-24
西藏润景科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation equipment and process of catalysts for the selective hydrogenation of benzene to cyclohexene are rarely reported.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A production system and preparation method of a catalyst for the selective hydrogenation of benzene to cyclohexene
  • A production system and preparation method of a catalyst for the selective hydrogenation of benzene to cyclohexene
  • A production system and preparation method of a catalyst for the selective hydrogenation of benzene to cyclohexene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 As shown, a production system for catalysts for the selective hydrogenation of benzene to cyclohexene: the production system includes a head tank 1, a batching tank 2, an autoclave 3, and a washing tank group arranged at intervals from top to bottom. The tank group includes two washing tanks 4, the batching tank 2 is located at the left obliquely below the high level tank 1, the autoclave 3 is located at the left obliquely below the batching tank 2, the washing tank 4 is located at the right obliquely below the autoclave 3, the bottom of the high level tank 1 is respectively connected to the batching The tops of tank 2, autoclave 3, and washing tank 4 are connected (the tops of batching tank 2, autoclave 3, and washing tank 4 are also connected to the bottom of elevated tank 1), and the top of autoclave 3 is provided with exhaust pipe 5, and The top of the autoclave 3 is connected to the bottom of the head tank 1 and also connected to the bottom of the bat...

Embodiment 2

[0045] A production system of a catalyst for the selective hydrogenation of benzene to cyclohexene is the same as in Example 1.

[0046] Utilize above-mentioned production system to prepare the method for benzene selective hydrogenation to prepare cyclohexene catalyst, operation steps are as follows:

[0047] (1) Ingredients: First add water to the batching tank 2 through the head tank 1, then add sodium hydroxide under stirring to prepare lye, the mass ratio of sodium hydroxide to water is 1:5, and then add the alkali The liquid is imported into the autoclave 3 from the batching tank 2, and the agitator 10 of the autoclave 3 is opened at the same time, and the rotating speed is 120 r / min; Add water, stir and dissolve, and prepare salt solution, the mass ratio of ruthenium trichloride hydrate and water is 1:10; then import the salt solution into autoclave 3, the mixing ratio of salt solution and lye Guarantee ruthenium trichloride hydrate: the mol ratio of sodium hydroxide is...

Embodiment 3

[0059] A production system of a catalyst for the selective hydrogenation of benzene to cyclohexene is the same as in Example 1.

[0060] Utilize above-mentioned production system to prepare the method for benzene selective hydrogenation to prepare cyclohexene catalyst, operation steps are as follows:

[0061] (1) Ingredients: first add water to the batching tank 2 through the head tank 1, then add sodium hydroxide under stirring to prepare lye, the mass ratio of sodium hydroxide to water is 1:7, and then add the alkali The liquid is imported into the autoclave 3 from the batching tank 2, and the agitator 10 of the autoclave 3 is opened at the same time, and the rotating speed is 135 r / min; Add water, stir and dissolve, and prepare salt solution, the mass ratio of ruthenium trichloride hydrate and water is 1:12; then import the salt solution into autoclave 3, the mixing ratio of salt solution and lye Guarantee ruthenium trichloride hydrate: the mol ratio of sodium hydroxide is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Belonging to the field of chemical and chemical engineering, the invention in particular relates to a production system of a catalyst for preparation of cyclohexene by benzene selective hydrogenation and a method. The production system includes an elevated tank, a compounding tank, a high pressure kettle, a washing tank and the like. The preparation method comprises material compounding, precipitation reaction, reduction reaction and washing, etc. Compared with the prior art, in the catalyst preparation production system, the position difference between devices is utilized to realize automatic feeding and discharging, thus solving the high-pressure kettle mechanical seal oil leakage problem, shortening the catalyst preparation period from the original 24 hours to 8 hours, and increasing the catalyst production capacity from 1000kg / year to more than 3000kg / year; and in terms of the main performance indexes of the catalyst, when 70% of benzene converts, the cyclohexene selectivity reaches about 80%.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to a production system and method of a catalyst for preparing cyclohexene through selective hydrogenation of benzene. Background technique [0002] Using benzene as raw material to selectively hydrogenate cyclohexene, the production is safe, resource-saving and environment-friendly. The downstream products of cyclohexene, cyclohexanone, adipic acid, nylon 6, nylon 66 and other bulk chemicals play an important role in the development of the national economy. However, because the selective hydrogenation of benzene to cyclohexene is extremely unfavorable in terms of thermodynamics and kinetics, in general, only cyclohexane can be obtained by hydrogenation of benzene, and cyclohexene can only be obtained in some special catalysts and catalytic systems. Although people have conducted extensive research on the catalytic technology of selective hydrogenation o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/46C07C13/20C07C5/11
CPCY02P20/52
Inventor 刘仲毅李中军刘寿长刘国际陈恩之赵风轩乔华勇姜曦
Owner 西藏润景科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com