Unlock instant, AI-driven research and patent intelligence for your innovation.

Dehydration tower extraction process in ethyl acetate production

A technology of ethyl acetate and dehydration tower, which is applied in the separation/purification of carboxylic acid esters, organic chemistry, etc. It can solve the problems of poor dehydration effect, residual impurities that easily pollute the environment, extraction and condensation effects, etc., to achieve easy control and improve preparation The purity of the finished product and the effect of simple operation steps

Pending Publication Date: 2021-02-19
LINYI JINYIMENG BIOTECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above technical problems, the present invention provides a dehydration tower extraction process in the production of ethyl acetate to solve the problems of poor dehydration effect in the existing ethyl acetate dehydration method, the generation of residual impurities is easy to pollute the environment and the extraction condensation effect is poor problem, a dehydration tower extraction process in the production of ethyl acetate specifically includes the following steps:

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
  • Dehydration tower extraction process in ethyl acetate production
  • Dehydration tower extraction process in ethyl acetate production
  • Dehydration tower extraction process in ethyl acetate production

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0058] 1. Put crude ethyl acetate containing water, acetic acid and ethanol at a temperature of 75°C into the dehydration tower from the middle of the rectification tower to form a ternary azeotrope of ethanol, water and ethyl ester;

[0059] 2. After the ternary azeotrope rectification, the head oil containing ethanol, water and a small amount of ethyl acetate is obtained at the top of the dehydration tower, the residual liquid containing acetic acid is obtained at the bottom of the dehydration tower, and ethyl acetate is obtained in the dehydration tower;

[0060] 3. Discharge the residual liquid from the bottom of the dehydration tower;

[0061] 4. Extract the head oil from the top of the dehydration tower, after condensation, carry out phase separation treatment to obtain water and oil phases, discharge the water, reflux part of the oil phase, the reflux ratio is 8:1, and recover the rest of the oil phase;

[0062] 5. Cool the ethyl acetate obtained in the tower, and parti...

specific Embodiment 2

[0064] 1. Put crude ethyl acetate containing water, acetic acid and ethanol at a temperature of 80°C into the dehydration tower from the middle of the rectification tower to form a ternary azeotrope of ethanol, water and ethyl ester;

[0065] 2. After the ternary azeotrope rectification, the head oil containing ethanol, water and a small amount of ethyl acetate is obtained at the top of the dehydration tower, the residual liquid containing acetic acid is obtained at the bottom of the dehydration tower, and ethyl acetate is obtained in the dehydration tower;

[0066] 3. Discharge the residual liquid from the bottom of the dehydration tower;

[0067] 4. Extract the head oil from the top of the dehydration tower, after condensation, carry out phase separation treatment to obtain water and oil phases, discharge the water, reflux part of the oil phase, the reflux ratio is 11:1, and recover the rest of the oil phase;

[0068] 5. Cool the ethyl acetate obtained in the tower, and part...

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 a dehydration tower extraction process in ethyl acetate production, and belongs to the field of ethyl acetate production. Thedehydration tower extraction process comprises the following specific steps: ethyl acetate coarse treatment, dehydration tower dehydration treatment, impurity liquid collection treatment, ethyl acetate collection, leading-out and cooling, and ethyl acetate finished product collection, and ethyl acetate finished product storing and transporting. The method has the advantages of mature process, good dehydration effect, and realization of impurity treatment, oil liquid treatment, oil-water separation treatment and separable treatment of impurities, thereby avoiding of environmental pollution; and meanwhile, the operation steps are simple, easily understood and easy to control, and dehydration extraction operation of a large amount of ethyl acetate can be carried out, so that the processing efficiency is ensured, and the purity of a finished product of ethyl acetate is improved.

Description

technical field [0001] The invention belongs to the technical field of ethyl acetate production, and in particular relates to a dehydration tower extraction process in ethyl acetate production. Background technique [0002] Ethyl acetate is also called ethyl acetate. Pure ethyl acetate is a colorless, transparent liquid with a pungent odor. It is a fine chemical product with a wide range of uses. It has excellent solubility, quick drying, and a wide range of uses. It is a very important organic chemical raw material and extremely Good industrial solvent, widely used in the production process of cellulose acetate, ethyl cellulose, chlorinated rubber, vinyl resin, cellulose acetate resin, synthetic rubber, coatings and paints. The old wine we are talking about is delicious because it contains ethyl acetate. [0003] Ethyl acetate has a fruity aroma. Because wine contains a small amount of acetic acid, it reacts with ethanol to form ethyl acetate. Because this is a reversib...

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): C07C67/48C07C69/14
CPCC07C67/48C07C69/14
Inventor 张超卢晓峰吴清云朱孔于王广荣
Owner LINYI JINYIMENG BIOTECH