Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous isosynthesis method and continuous isosynthesis device of ethylidene norbornene

A technology for ethylidene norbornene and isomerization synthesis, which is applied in the chemical industry and can solve the problems such as the inability to solve the continuous removal of waste catalysts, the inability to solve the deactivation of catalysts in contact with water, and the inability to efficiently utilize catalysts.

Active Publication Date: 2014-08-13
SHANGHAI HUACHANG ENVIRONMENT PROTECTION
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method overcomes the shortcomings of the prior art that it is necessary to use multiple ebullating bed reactors or set complex internals in the reactor to achieve catalyst gradation, but this method has high requirements on the properties of the catalyst and cannot solve the problem of continuous waste catalyst If it is removed, it cannot solve the problem of catalyst deactivation when encountering water in the ENB isomerization reaction, and cannot make efficient use of the catalyst

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
  • Continuous isosynthesis method and continuous isosynthesis device of ethylidene norbornene

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] In a first aspect of the present invention, a continuous isomerization synthesis method of ENB is provided, the method comprises the following steps:

[0033] (a) The reactors at all levels are connected in series, and the circulating materials of the reactors are pumped from the bottom of the reactors through the circulating pump after exchanging heat through the heat exchanger;

[0034] (b) The interstage cyclone separator realizes the continuous separation of interstage materials, the materials flow continuously from the first stage reactor to the last stage reactor, and the catalyst continuously flows from the last stage reactor to the first stage reactor Flow, so that the material and the catalyst are in reverse contact;

[0035] (c) The heat exchanger controls the temperature rise in the reactor through the heat exchange effect on the circulating material, so as to maintain the optimum operating temperature of the reactor temperature at 10-20°C;

[0036] (d) The ...

Embodiment 1

[0065] In a 15,000-ton / year ENB isomerization synthesis device, according to the catalyst efficient utilization method and device in the ENB isomerization synthesis of the present invention, to maximize the efficient utilization of the catalyst, while playing a role in the output of all levels and the final product Purification and removal of spent catalyst while the unit is in continuous operation. Its specific operation process and effects are described as follows:

[0066] 1. Operating conditions

[0067] The device adopts 4-stage series ebullating bed reactors, and the reaction volume of a single unit is 7.6m 3 , The filling coefficient is 79%. The reactor operates continuously, the residence time of a single reactor of materials is more than 1 hour, and the overall residence time is more than 4 hours. The first-stage reactor feeds 2.1t / h, the last-stage reactor discharges 1.875t / h, and the catalyst feeds 0.062t / h. The cyclone separator between each stage is composed o...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a continuous isosynthesis method and a continuous isosynthesis device of ethylidene norbornene. The continuous isosynthesis method of the ethylidene norbornene comprises the following steps: forming a multi-stage reactor group by adopting two or more isomeric fluidized bed reactors; continuously introducing a fresh vinyl norbornene raw material into a reaction system through the first-stage reactor of the multi-stage reactor group for fluidized reaction to obtain ethylidene norbornene products, and continuously discharging through the last-stage reactor of the multi-stage reactor group; and continuously introducing a fresh catalyst into the reaction system through the last-stage reactor for participating in the fluidized reaction, sequentially carrying out liquid-solid separation through interstage cyclone separators arranged between all-stage reactors of the multi-stage reactor group, and then discharging out of the first-stage reactor.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a continuous isomerization synthesis method and device for ENB (ethylidene norbornene) with two or more fluidized bed reactors connected in series and provided with an interstage cyclone separator. Specifically, the invention provides a method and device for improving production efficiency, catalyst use efficiency and product quality in the ENB isomerization synthesis process. Background technique [0002] Ethylidene norbornene, referred to as ENB, is a diene monomer widely used in EPDM (ethylene propylene diene) rubber, competing with the previously used 1,4-hexadiene and dicyclopentadiene. As the third monomer, ethylene-propylene rubber can be obtained by copolymerizing with ethylene and propylene. The vulcanization speed of the prepared rubber is faster than other third monomers, which can overcome the disadvantage of slow vulcanization speed of ethylene-propylene rubber. One of...

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
IPC IPC(8): C07C13/43C07C5/25
Inventor 邱阳汪华林李剑平付鹏波沈其松桑伟迟
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com