Separation and purification system and method of n-butyraldehyde and isobutylaldehyde

A purification method and technology of isobutyraldehyde, which is applied in the field of separation and purification system of n-butyraldehyde and isobutyraldehyde, can solve the problems of low purity of isobutyraldehyde products and high content of heavy components in n-butyraldehyde products, so as to improve prices and competition Advantages, increasing competitive advantage, and improving the effect of purity

Inactive Publication Date: 2015-07-22
LIAOCHENG LUXI CHEM ENG DESIGN
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity of the isobutyraldehyde product separated from the butyraldehyde isomer tower in the existing butanol production system is low, and the heavy component content in the n-butyraldehyde product is too high, which cannot meet the needs of the market.

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
  • Separation and purification system and method of n-butyraldehyde and isobutylaldehyde

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The top of the butyraldehyde isomerization tower 1 is heated to 80°C, and the raw material with a lower boiling point is discharged from the top of the tower, and enters the first rectification tower 2 from the middle feed port of the first rectification tower 2, and the butyraldehyde isomerization The heat of material evaporation in the stereotype tower 1 is provided by the tower kettle reboiler of the butyraldehyde isomer tower 1, and the mixed butyraldehyde discharged from the top of the butyraldehyde isomer tower 1 is discharged from the first rectification tower 2 Sixty-seven trays are added, the flow rate is 8800Kg / h, and the temperature of the material is 80°C, which is the feed for the bubble point. The material extracted from the top of the first rectification tower 2 is sent to the isobutyraldehyde reflux tank after being condensed by the tower top condenser, and part of the material is returned to the first rectification tower 2, and the reflux is bubble point...

Embodiment 2

[0029] The top of the butyraldehyde isomer tower 1 is heated to 90°C, and the raw material with a lower boiling point is discharged from the top of the tower, and enters the first rectification tower 2 from the middle feed port of the first rectification tower 2, and the butyraldehyde isomerization The heat of material evaporation in the stereotype tower 1 is provided by the tower kettle reboiler of the butyraldehyde isomer tower 1, and the mixed butyraldehyde discharged from the top of the butyraldehyde isomer tower 1 is discharged from the first rectification tower 2 Sixty-seven trays are added, the flow rate is 8000Kg / h, and the temperature of the material is 75°C, which is the feed for the bubble point. The material extracted from the top of the first rectification tower 2 is sent to the isobutyraldehyde reflux tank after being condensed by the tower top condenser, and part of the material is returned to the first rectification tower 2, and the reflux is bubble point reflux...

Embodiment 3

[0033] The top of the butyraldehyde isomerization tower 1 is heated to 70°C, and the raw material with a lower boiling point is discharged through the top of the tower, and enters the first rectification tower 2 from the middle feed port of the first rectification tower 2, and the butyraldehyde isomerization The heat of material evaporation in the stereotype tower 1 is provided by the tower kettle reboiler of the butyraldehyde isomer tower 1, and the mixed butyraldehyde discharged from the top of the butyraldehyde isomer tower 1 is discharged from the first rectification tower 2 Sixty-seven trays are added, the flow rate is 7800Kg / h, the material temperature is 80°C, and it is the bubble point feed. The material extracted from the top of the first rectification tower 2 is sent to the isobutyraldehyde reflux tank after being condensed by the tower top condenser, and part of the material is returned to the first rectification tower 2, and the reflux is bubble point reflux, and pa...

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 separation and purification system of n-butyraldehyde and isobutylaldehyde. The separation and purification system comprises a butyraldehyde isomer tower, a first rectifying tower and a second rectifying tower, wherein the tower top discharging end of the butyraldehyde isomer tower is communicated with the middle part of the first rectifying tower, and the tower kettle discharging end of the butyraldehyde isomer tower is communicated with the middle part of the second rectifying tower; the tower kettle discharging end of the first rectifying tower is communicated with the butyraldehyde isomer tower. Mixed gas containing n-butyraldehyde and isobutylaldehyde isomer enters the butyraldehyde isomer tower to be separated, and isobutylaldehyde is discharged from the tower top of the butyraldehyde isomer tower and enters the first rectifying tower for further separation and purification; the n-butyraldehyde is discharged from the tower bottom of the butyraldehyde isomer tower and enters the second rectifying tower for further separation and purification. The first rectifying tower is used for separating and recovering the high-purity isobutylaldehyde, mixed butylaldehyde separated from the tower bottom of the first rectifying tower can be returned to an original butyraldehyde isomer tower and can also directly enter a hydrogenation system of a butyl octanol device, the produced n-butyraldehyde and the produced isobutylaldehyde are used as products for sales, and the flexibility is higher.

Description

technical field [0001] The invention is applied in the field of butanol production, and in particular relates to a separation and purification system and separation and purification method of n-butyraldehyde and isobutyraldehyde. Background technique [0002] Isobutyraldehyde is an important organic chemical raw material, widely used as a solvent or plasticizer. Many fine chemical products can be derived from isobutyraldehyde, such as isobutanol, octapentyl glycol, methacrylic acid (MAA), methyl methacrylate (MMA), 2,2,4-trimethyl-1 , 3-pentanediol (TMPD), methyl ethyl ketone, calcium pantothenate, isobutyrate and isobutyronitrile, etc. With these products as raw materials, more chemical products can be synthesized. The downstream products of isobutyraldehyde show a trend of vigorous development. In addition, the market demand for isobutyraldehyde is also increasing year by year. However, the purity of the isobutyraldehyde product separated by the butyraldehyde isomer towe...

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
IPC IPC(8): C07C47/02C07C45/78C07C45/82
CPCB01D3/143C07C45/78C07C45/82
Inventor 肖光张文杰刘立彬王艳春田松
Owner LIAOCHENG LUXI CHEM ENG DESIGN
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