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

Method for separating ethyl ester toluene organic waste liquid containing small amount of water

An organic waste liquid, ethyl ester toluene technology, applied in organic chemistry, chemical instruments and methods, distillation purification/separation and other directions, can solve the problems of solvent pollution, equipment size and energy consumption increase, and achieve easy recovery, compact equipment, The effect of easy layout

Pending Publication Date: 2020-10-09
江西泽嵘化工有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that ethyl ester, toluene and water cannot be separated by ordinary rectification in the prior art, the traditional extractive distillation needs to add extractant, the equipment size and energy consumption increase, and it is easy to cause solvent pollution and other problems; the present invention provides a Separation method of ethyl ester toluene organic waste liquid containing a small amount of water

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
  • Method for separating ethyl ester toluene organic waste liquid containing small amount of water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of ethyl ester toluene organic waste liquid separation system containing a small amount of water, see figure 1 , including feed pump 1, dehydration tower 8, toluene-ethyl ester separation tower 11 and toluene purification tower 20 connected in sequence, organic waste liquid flows through dehydration tower 8, toluene-ethyl ester separation tower 11 successively through feed pump 1 and toluene purification tower 20;

[0029] The bottom of the dehydration tower 8 is provided with a first heater 9, and the mixed organic waste liquid at the bottom of the tower circulates through the pump in the first heater 9 to obtain heat so that it is partially vaporized and enters the dehydration tower 8; the top of the dehydration tower 8 is connected in turn The feed preheater 3, the first condenser 7 and the first condensate buffer tank 4, the bottom side of the first condensate buffer tank 4 are provided with a protruding water distribution bag 5, and the bottom of the water s...

Embodiment 2

[0040] Utilize the ethyl ester toluene organic waste liquid separation system containing a small amount of water of embodiment 1, the present invention provides a kind of ethyl ester toluene organic waste liquid separation method containing a small amount of water, wherein, in the organic waste liquid, water content is 2wt%, toluene The content is 53.4%, the ethyl ester content is 44%, and the heavy component impurities are 0.6%; specifically include:

[0041] Step 1: Pump the ethyl toluene ester water organic waste liquid into the dehydration tower, the amount of entering the tower is 1200kg / h, and then heat it to ensure that the temperature at the top of the tower is 72°C, the temperature of the liquid at the bottom of the tower is 84°C, and the evaporation at the top of the dehydration tower is The weight ratio to the feed amount is 1.5-2.5; the liquid in the dehydration tower is continuously vaporized, water and a small amount of organic matter are evaporated, and the laten...

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
boiling pointaaaaaaaaaa
densityaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for separating ethyl ester toluene organic waste liquid containing a small amount of water, and belongs to the technical field of organic solvent waste liquid separation. The separation method comprises the following steps: pumping tolylethyl ester organic waste liquid containing a small amount of water into a dehydration tower, performing heating to ensure that liquid in the dehydration tower is continuously gasified and evaporating moisture and a small amount of organic matters out, and separating a water phase out of a system after condensation and phase separation; then, because of the large difference between the boiling points of the ethyl ester and the methylbenzene, separating the ethyl ester with a low boiling point out through a rectification method, and then purifying the methylbenzene . According to the method, an azeotropic distillation mode is adopted, methylbenzene is used as an entrainer to form a ternary azeotropic system, water is directly separated out at the tower top, the influence of methylbenzene-water and ethyl ester-water azeotropy is broken through, and separation of methylbenzene, water and ethyl ester-water is achieved.

Description

technical field [0001] The invention relates to the technical field of separation of organic waste liquid containing water, and specifically provides a method for separating organic waste liquid of ethyl ester toluene containing a small amount of water. Background technique [0002] With the rapid development of the country's economy, the public is paying more and more attention to resource waste and environmental pollution. The irrational use of resources is the main cause of environmental pollution. Elimination of pollution should start with the rational utilization of resources and conservation and emission reduction, among which the recycling and renewable utilization of chemical residues are the main contents. The ideal comprehensive utilization of resources is to eat up and squeeze out as many resources as possible. However, due to the constraints of domestic technical processing conditions, in most cases, the main components of resources are used, and the used or di...

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): C07C7/04C07C15/06C07C67/54C07C69/14
CPCC07C7/04C07C67/54C07C15/06C07C69/14
Inventor 赖耀明
Owner 江西泽嵘化工有限公司
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