Device and method for preparing liquid pentaerythritol by using pentaerythritol separation mother liquor

A technology for pentaerythritol and mother liquor is applied in the field of devices for separating pentaerythritol from mother liquor to prepare liquid pentaerythritol, which can solve problems such as waste and pollute the environment, and achieve the effects of reducing production cost and increasing output.

Pending Publication Date: 2018-09-21
PUYANG YONGAN CHEM IND
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, after the separation of sodium formate or calcium formate, pentaerythritol and dipentaerythritol in the traditional pentaerythritol mother liquor, the remaining separated mother liquor is generally treated by incineration, and the separated mother liquor also conta

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
  • Device and method for preparing liquid pentaerythritol by using pentaerythritol separation mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] Step 1: dehydration, take 100 mL of pentaerythritol separation mother liquor, and carry out dehydration treatment with a dehydration rate of 30% through the evaporation device 11;

[0023] Step 2: extraction, adding 200 mL of extractant to the dehydrated pentaerythritol separation mother liquor in the extraction device 12, stirring and mixing for 3h, and standing for 2h to obtain the extraction phase located at the upper part of the extraction device 12 and the raffinate phase located at the lower part of the extraction device, Wherein the extraction phase is mainly a mixture of extractant, pentaerythritol, dipentaerythritol, dipentaerythritol, tripentaerythritol, lipids, etc., and the raffinate phase is mainly sodium formate or calcium formate, pentaerythritol, dipentaerythritol;

[0024] Step 3: rectifying, extracting the extraction phase into the rectifying device 13, rectifying the extractant to obtain about 20 mL of liquid pentaerythritol, and t...

Example Embodiment

[0025] Embodiment 2:

[0026] Step 1: dehydration, take 100 mL of pentaerythritol separation mother liquor, and carry out dehydration treatment with a dehydration rate of 40% through the evaporation device 11;

[0027] Step 2: extraction, adding 300 mL of extractant to the dehydrated pentaerythritol separation mother liquor in the extraction device 12, stirring and mixing for 3 h, and leaving it for 2 h to obtain the extraction phase located at the upper part of the extraction device 12 and the raffinate phase located at the lower part of the extraction device, Wherein the extraction phase is mainly a mixture of extractant, pentaerythritol, dipentaerythritol, dipentaerythritol, tripentaerythritol, lipids, etc., and the raffinate phase is mainly sodium formate or calcium formate, pentaerythritol, dipentaerythritol;

[0028] Step 3: rectifying, extracting the extraction phase into the rectifying device 13, rectifying the extractant to obtain about 30 mL of liquid pentaerythritol...

Example Embodiment

[0029] Embodiment three:

[0030] Step 1: dehydration, take 100 mL of pentaerythritol separation mother liquor, and carry out dehydration treatment with a dehydration rate of 50% through the evaporation device 11;

[0031] Step 2: extraction, adding 500 mL of extractant to the dehydrated pentaerythritol separation mother liquor in the extraction device 12, stirring and mixing for 3h, and standing for 2h to obtain the extraction phase located at the upper part of the extraction device 12 and the raffinate phase located at the lower part of the extraction device, Wherein the extraction phase is mainly a mixture of extractant, pentaerythritol, dipentaerythritol, dipentaerythritol, tripentaerythritol, lipids, etc., and the raffinate phase is mainly sodium formate or calcium formate, pentaerythritol, dipentaerythritol;

[0032] Step 3: rectifying, extracting the extraction phase into the rectifying device 13, rectifying the extractant to obtain about 35 mL of liquid pentaerythritol...

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 device and a method for preparing liquid pentaerythritol by using pentaerythritol separation mother liquor. The device for preparing the liquid pentaerythritol by using thepentaerythritol separation mother liquor comprises an evaporation device, an extraction device and a rectification device, wherein a feeding hole of the evaporation device is connected with the pentaerythritol separation mother liquor of a pentaerythritol separation process, and a discharge hole of the evaporation device is connected with the extraction device; the extraction device is provided with an extraction agent feed inlet, and an extraction agent can be added into the extraction device through the extraction agent feed inlet; after the operation of stirring and standing for layering isperformed, an extract phase positioned at the upper part of the extraction device is sucked into the rectification device, so that the extraction agent is rectified out; the extraction agent, obtained by rectifying, enters an extraction agent recovery tank for recycling. The pentaerythritol separation mother liquor is subjected to dehydration, extraction and rectification processes so as to be recycled, so that the yield of the separation process is increased, the production cost is lowered, and the environmental pollution is also avoided.

Description

technical field [0001] The invention relates to the technical field of recovery of pentaerythritol separation mother liquor, in particular to a device for preparing liquid pentaerythritol from pentaerythritol separation mother liquor and a preparation method thereof. Background technique [0002] At present, after the separation of sodium formate or calcium formate, pentaerythritol and dipentaerythritol in the traditional pentaerythritol mother liquor, the remaining separated mother liquor is generally treated by incineration, and the separated mother liquor also contains sodium formate or calcium formate, pentaerythritol, dipentaerythritol and Liquid pentaerythritol (including mixtures of pentaerythritol, dipentaerythritol, dipentaerythritol, tripentaerythritol, lipids, etc.), incineration treatment not only pollutes the environment, but also causes waste. Liquid pentaerythritol is widely used in alkyd resins, coatings, inks, lubricating oils and other fields, and the marke...

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): C07C29/76C07C31/24
CPCC07C29/76C07C31/245
Inventor 王永军蒋洪强
Owner PUYANG YONGAN CHEM IND
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