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

Batch extractive distillation separation method of ethyl tert-butyl ether/tert-butyl alcohol azeotropic mixture

A technology of ethyl tert-butyl ether and azeotropic mixture, which is applied in the field of batch extraction, rectification and separation, and can solve problems that have not yet been seen

Inactive Publication Date: 2015-11-11
UNIV OF JINAN
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many articles and patents on extractive distillation, but there is no publicly published information on the extraction, rectification and separation of ethyl tert-butyl ether-tert-butanol azeotropic system

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
  • Batch extractive distillation separation method of ethyl tert-butyl ether/tert-butyl alcohol azeotropic mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0008] Embodiment: adopt batch extraction and rectification device, drop 500L ethyl tert-butyl ether-tert-butanol azeotropic mixture in heating kettle, the extraction agent selected for test is low eutectic solvent choline chloride and ethylene glycol, start heating The heat source of the kettle and the cold source of the condenser, after a period of reflux at the top of the extraction and rectification tower, the temperature of the top of the tower is stable, and the extraction agent is added, and the feeding position of the extraction agent is near the top of the tower. Reflux operation, when the top temperature of the extractive distillation tower is 60-80°C, the content of ethyl tert-butyl ether in the distillate is ≥ 99%, and the discharge starts, the reflux ratio is 3:1, and the discharge speed is 180L / h. When the top temperature of the extractive distillation column is 80-80.5°C, the ethyl tert-butyl ether-tert-butanol transition section 1 is extracted, and the addition ...

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 discloses a batch extractive distillation separation method of an ethyl tert-butyl ether / tert-butyl alcohol azeotropic mixture and belongs to the separation technology of the ethyl tert-butyl ether / tert-butyl alcohol azeotropic mixture. In the method, a low-eutectic solvent, choline chloride, and ethyl glycol are employed as an extraction agent. The operation conditions of an extractive distillation column are represented as follows: mass ratio of the extraction agent to a top distillate is 0.2:1-10:1 and feeding temperature of the extraction agent is 20-60 DEG C. By means of control of different temperatures and reflux ratios at the top of the extractive distillation column, an ethyl tert-butyl ether product, an ethyl tert-butyl ether / extraction agent transition portion 1, a tert-butyl alcohol product, and an ethyl tert-butyl ether / extraction agent transition portion 2 are respectively withdrawn from the top of the extractive distillation column. When the composition of the extraction agent in a heating kettle achieves requirement, the extraction agent is pumped into a high-level liquid tank, and material is fed for performing the extractive distillation to next batch. The separation method is advantaged in that the extraction agent is employed for breaking the ethyl tert-butyl ether / tert-butyl alcohol azeotropic system, so that the ethyl tert-butyl ether and tert-butyl alcohol products can be separated out. The method is flexible in single column operation and is low in equipment cost.

Description

technical field [0001] The invention relates to a method for intermittent extraction, rectification and separation of ethyl tert-butyl ether-tert-butanol azeotropic mixture. It belongs to the separation technology of ethyl tert-butyl ether-tert-butanol azeotropic mixture. Background technique [0002] Extractive distillation is a special distillation separation technology, which is suitable for the separation of azeotropic systems. The purpose of separation is achieved by continuously adding extractant to the top of the rectification tower to change the relative volatility of the original components. Batch extractive distillation combines the advantages of batch distillation and batch distillation and extractive distillation. It is flexible in operation and can separate multiple components through one tower. The equipment investment is small and it is suitable for small batch azeotropic systems and near-boiling systems. The chemical structural formula of ethyl tert-butyl e...

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 Applications(China)
IPC IPC(8): C07C41/42C07C43/04C07C29/84C07C31/12
CPCC07C41/42C07C29/84C07C43/04C07C31/12
Inventor 崔玉马守涛孙国新
Owner UNIV OF JINAN
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