A kind of refining purification method of butanone oxime

A purification method and technology of butanone oxime are applied in the field of refining and purification of butanone oxime, and can solve the problems of carbonization and coking of oxime products, easy char formation and blockage of pipelines, etc.

Active Publication Date: 2022-05-27
ZHEJIANG JINHUA NEW MATERIALS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The refining and purification of butanone oxime is an essential step in the production process of butanone oxime, but because the oxime product is very easy to coke during the evaporation and gasification process, thereby blocking the pipeline and equipment, this is because the oxime product has a relatively high concentration of metal ions. Strong complexation, the complex has a higher boiling point, and the catalytic effect of metal ions makes the oxime product easy to carbonize and coke at the evaporation temperature

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
  • A kind of refining purification method of butanone oxime
  • A kind of refining purification method of butanone oxime
  • A kind of refining purification method of butanone oxime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A refined purification method of butanone oxime, the scheme of which is:

[0026] The 100kg toluene- butanone oxime solution into the organic-inorganic separator, through the centrifuge at a speed of 8000r / min to separate the inorganic phase into the toluene - oxime tank, by the pump pump into the rectification system for separation; the said is a secondary rectification system, toluene - butanone oxime solution first into the middle of the first rectification tower, the internal temperature of the first rectification tower is 120 ° C, the top of the tower reflux temperature is 35 ° C, most of the toluene distilled out of the condensation and reflux to the toluene tank, Butanone oxime crude product from the bottom of the first distillation column into the middle of the second rectification column, the middle temperature of the second rectification column is 115 ° C, toluene distilled out of the condensation reflux to the toluene tank, butanone oxime crude product from the...

Embodiment 2

[0037] A refined purification method of butanone oxime, the scheme of which is:

[0038] 200kg of toluene - butanone oxime solution into the organic inorganic separator, through the centrifuge at a speed of 12000r / min to separate the inorganic phase into the toluene - oxime tank, by the pump pump into the rectification system for separation; the second stage rectification system, toluene - butanone oxime solution first into the middle of the first rectification tower, the internal temperature of the first rectification tower is 128 ° C, the top of the tower reflux temperature is 40 ° C, most of the toluene is distilled out of the condensation and reflux to the toluene tank, Butanone oxime crude product from the bottom of the first distillation column into the middle of the second rectification column, the middle temperature of the second rectification column is 120 ° C, toluene distilled out of the condensation reflux to the toluene tank, butanone oxime crude product from the bo...

Embodiment 3

[0047] A refined purification method of butanone oxime, the scheme of which is:

[0048] The 300kg toluene- butanone oxime solution into the organic inorganic separator, through the centrifuge at a speed of 16000r / min to separate the inorganic phase into the toluene - oxime tank, by the pump pump into the rectification system for separation; the said is the secondary rectification system, toluene - butanone oxime solution first into the middle of the first rectification column, the internal temperature of the first rectification tower is 135 ° C, the top of the tower reflux temperature is 45 ° C, most of the toluene is distilled out of the condensation reflux to the toluene tank, Butanone oxime crude product from the bottom of the first distillation column into the middle of the second rectification column, the middle temperature of the second rectification column is 125 ° C, toluene distilled out of the condensation reflux to the toluene tank, butanone oxime crude product from ...

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 present invention relates to the field of chemical engineering. The present invention is a method for refining and purifying butanone oxime. Firstly, the inorganic phase in the toluene-butanone oxime solution is removed, and then the toluene is removed through a secondary distillation system to obtain the crude butanone oxime, and then through a After the adsorption of metal ion adsorption resin, a small amount of metal ions in the crude product of butanone oxime can be removed to prevent the carbonization and coking of the butanone oxime product under the high temperature of the thin film evaporator, thereby blocking the pipeline and affecting the evaporation efficiency, creating a new environment for the long-term operation of the evaporation equipment. Conditions, avoid frequent equipment cleaning work, help save resources, improve production efficiency; the metal ion adsorption resin of the present invention has a higher metal adsorption rate, and can reduce the content of metal ions in the butanone oxime crude product to the greatest extent.

Description

Technical field [0001] The present invention relates to the chemical field, in particular a method of refining and purifying butanone oxime. Background [0002] As a chemical oxygen scavenger, butankeme has the advantages of low toxicity, high efficiency and fast speed. High-purity butanone oxime can be used to synthesize silicone crosslinkers, silicon curing agents, isocyanate blocking agents, but also in the oil-based paint, alkyd paint, epoxy ester paint and other storage and transportation process to play an anti-crust role. [0003] CN1556096A involves a process for the oxidative production of acetone or butanone oxime or butanone oxime. It belongs to the production technology of acetone oxime and butanone oxime. The process according to 100 ~ 200g of solvent / molone dosage of acetone or butanone dissolved in isopropanol or tert-butanol, in the above acetone or butanone solution according to 3 ~ 10g catalyst / molone dosage added TS-1 catalyst and according to 1.2 ~ 2 mol a...

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 Patents(China)
IPC IPC(8): C07C249/14C07C251/38B01J20/26B01J20/30C08F292/00C08F212/14C08F230/08C08F228/04
CPCC07C249/14B01J20/264C08F292/00C07C251/38C08F212/30C08F230/085C08F228/04
Inventor 周强段仲刚江煜茅志清吴汉文马剑廖志华
Owner ZHEJIANG JINHUA NEW MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap