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

Ternary extractive distillation separating method for ethyl acetate-ethyl alcohol-water mixture

A technology of ethyl acetate, extraction and rectification, applied in the preparation of organic compounds, carboxylic acid esters, oxygenated compounds, etc., can solve the problems of low product recovery, complicated separation process, and low separation purity, and achieve product High purity, simple process, and easy recovery

Inactive Publication Date: 2019-07-23
QINGDAO UNIV OF SCI & TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above separation methods all have problems such as complex separation process, difficult operation, low product recovery rate, and low separation purity.

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
  • Ternary extractive distillation separating method for ethyl acetate-ethyl alcohol-water mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The feed flow rate is 1000kg / h, and the feed contains 10% (mass fraction) of ethyl acetate, 20% (mass fraction) of ethanol, and 70% (mass fraction) of water. The number of theoretical plates of the extractive distillation column (T1) is 35, the feed position of the ethyl acetate-ethanol-water mixture is the 20th block, the extraction agent feed position is the third block, the reflux ratio is 0.2, and the extractive distillation column (T2) The number of theoretical plates is 40, the feeding position is the 20th, the feeding position of the extractant is the 3rd, the reflux ratio is 0.4, and the number of theoretical plates of the extraction agent recovery tower (T3) is 16, and the feeding position It is the 8th block, the reflux ratio is 0.7, the flow rate of the extractant ethylene glycol is 1500kg / h (the solvent ratio is 1.5), the amount of the extractant of the extractive distillation column (T1) and the extractant of the extractive distillation column (T2) The rati...

Embodiment 2

[0034] The feed flow is 1000kg / h, and the feed contains 30% (mass fraction) of ethyl acetate, 30% (mass fraction) of ethanol, and 40% (mass fraction) of water. The number of theoretical plates of the extractive distillation column (T1) is 60, the feed position of the ethyl acetate-ethanol-water mixture is the 35th block, the extraction agent feed position is the 7th block, the reflux ratio is 0.9, and the extractive distillation column (T2) The number of theoretical plates is 55, the feeding position is the 40th, the feeding position of the extractant is the 6th, the reflux ratio is 1.2, and the number of theoretical plates of the extraction agent recovery tower (T3) is 35, and the feeding position It is the 20th piece, the reflux ratio is 1.5, the flow rate of the extractant ethylene glycol is 5000kg / h (the solvent ratio is 5), the amount of the extractant of the extractive distillation column (T1) and the extractant of the extractive distillation column (T2) The ratio of dos...

Embodiment 3

[0036]The feed flow rate is 1000kg / h, and the feed contains 50% (mass fraction) of ethyl acetate, 20% (mass fraction) of ethanol, and 30% (mass fraction) of water. The number of theoretical plates of the extractive distillation column (T1) is 48, the feed position of the ethyl acetate-ethanol-water mixture is the 27th block, the extraction agent feed position is the 5th block, the reflux ratio is 0.5, and the extractive distillation column (T2) The number of theoretical plates is 50, the feeding position is the 30th, the feeding position of the extractant is the 4th, the reflux ratio is 0.8, the number of theoretical plates of the extraction agent recovery tower (T3) is 28, and the feeding position It is the 15th block, the reflux ratio is 1.2, the flow rate of the extractant ethylene glycol is 3000kg / h (the solvent ratio is 3), the amount of the extractant in the extractive distillation column (T1) and the extractant in the extractive distillation column (T2) The ratio of dos...

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 relates to a ternary extractive distillation separating method for an ethyl acetate-ethyl alcohol-water mixture and a device suitable for the method. According to the method, ethylene glycol is utilized as an extracting agent. The method comprises the steps: firstly, sending the ethyl acetate-ethyl alcohol-water mixture into a first extractive distillation tower to be separated; obtaining an ethyl acetate product at the tower tope; sending a tower bottom material into a second extractive distillation tower to be separated; extracting out an ethyl alcohol product at the tower top;sending a mixture of a tower bottom extracting agent and water into an extracting agent recycling tower; extracting out water from the tower top; extracting out the extracting agent from the tower bottom for cyclic use. The method has the advantage of simple technology; the separated ethyl acetate and the separated ethyl alcohol have the advantage of high product purity; the used ethylene glycolextracting agent can simultaneously break three binary azeotropic points and a ternary azeotropic point in a system, is easy to recycle and has good chemical and thermal stability.

Description

technical field [0001] The invention belongs to the separation and purification field of the chemical industry and particularly relates to a method for separating ethyl acetate-ethanol-water mixture by ternary extraction and rectification. Background technique [0002] Ethyl acetate, also known as ethyl acetate, is a fine chemical product with a wide range of uses. It has excellent solubility, fast drying and a wide range of uses. It is an important organic chemical raw material and an excellent industrial solvent. It is widely used In the production process of acetate fiber, ethyl fiber, chlorinated rubber, vinyl resin, cellulose acetate resin, synthetic rubber, coatings and paints, etc. Its main uses are: as an industrial solvent, used in coatings, adhesives, ethyl cellulose, artificial leather, linoleum colorants, artificial fibers and other products; as a binder, used in the production of printing inks and artificial pearls; as a Extractant, used in the production of me...

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): C07C27/32C07C29/84C07C31/08C07C67/54C07C69/14
CPCC07C29/84C07C67/54C07C31/08C07C69/14
Inventor 朱兆友白文婷刘毅刚王英龙崔培哲
Owner QINGDAO UNIV OF SCI & TECH
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