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

Enhanced reaction system and method for preparing ethylene glycol by gas-phase catalytic hydration method

A gas-phase catalytic water and hydration reaction technology, applied in the preparation of hydroxyl compounds, the preparation of organic compounds, and the preparation of hydrolysis, can solve problems such as incompatibility, and achieve the effects of improving efficiency, improving utilization, and reducing catalyst dependence.

Pending Publication Date: 2021-03-05
NANJING YANCHANG REACTION TECH RES INST CO LTD
View PDF16 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidity of the niobic acid catalyst is too strong, more than 50% of which is H0:-5.6 or less, so it is not suitable for the catalytic hydration of ethylene oxide to prepare ethylene glycol.

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
  • Enhanced reaction system and method for preparing ethylene glycol by gas-phase catalytic hydration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] refer to figure 1 As shown, this embodiment provides an enhanced reaction system for preparing ethylene glycol by gas-phase catalytic hydration, including: a hydration reaction rectifier 10, an enhanced hydration reaction rectifier 20 and an evaporation tower 30; the hydration reaction rectifier 10 The side wall is provided with ethylene oxide inlet 104; the bottom of the hydration reaction rectifier 10 is provided with a water inlet 106; the ethylene oxide inlet 104 is connected with the ethylene oxide storage tank 70; the water inlet 106 is connected with the water storage tank 80 A water pump 90 is provided between the water storage tank 80 and the water inlet 106 .

[0066] Wherein, the tops of the hydration reaction rectifier 10 and the enhanced hydration reaction rectifier 20 are provided with dosing channels 101 for adding catalysts. A first condenser 107 is also connected to the top of the hydration reaction rectifier 10 , and the unreacted water and ethylene 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

No PUM Login to View More

Abstract

The invention provides an enhanced reaction system for preparing ethylene glycol by a gas-phase catalytic hydration method. The enhanced reaction system comprises a hydration reaction rectifier, an enhanced hydration reaction rectifier and an evaporation tower; an ethylene oxide inlet is formed in the side wall of the hydration reaction rectifier; a water inlet is formed in the bottom of the hydration reaction rectifier; and a pneumatic type micro-interface generator and a first hydraulic type micro-interface generator are arranged in the hydration reaction rectifier, and the pneumatic type micro-interface generator is arranged below the first hydraulic type micro-interface generator. The enhanced reaction system provided by the invention has the advantages of few equipment components, small occupied area, low energy consumption, low cost, high safety, controllable reaction and high raw material conversion rate, equivalently provides a reaction system with stronger operability for thefield of ethylene glycol preparation, and is worthy of wide popularization and application.

Description

technical field [0001] The invention relates to the field of ethylene glycol preparation, in particular to an enhanced reaction system and method for preparing ethylene glycol by gas-phase catalytic hydration. Background technique [0002] Ethylene glycol is an important aliphatic dihydric alcohol with a wide range of uses, mainly for the production of polyester resins, including fibers, films and engineering plastics. It can also be directly used as coolant and antifreeze, and it is also an indispensable substance in the production of alkyd resins, plasticizers, paints, adhesives, surfactants, explosives and capacitor electrolytes. [0003] The preparation of ethylene glycol with ethylene oxide as raw material is mainly divided into two methods, one is the direct hydration method, that is, ethylene oxide directly reacts with water under certain conditions to form ethylene glycol, and the reaction can be achieved without a catalyst. It is divided into two methods: catalytic...

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): C07C31/20C07C29/10C07C29/80B01D3/14
CPCC07C29/106C07C29/80B01D3/143C07C31/202Y02P20/52
Inventor 张志炳周政李磊张锋孟为民王宝荣杨高东罗华勋田洪舟杨国强曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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