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

Partition plate rectification process and apparatus for propargyl alcohol and butynediol aqueous solution system

A rectification technology of butynediol and clapboard, which is applied to the rectification and separation of butynediol aqueous solution and the field of propynyl alcohol, which can solve the problems of no energy saving and investment saving

Pending Publication Date: 2021-05-18
TIANJIN UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, there is no in-depth description of the separation process of the reaction product. The separation process described is relatively conventional. It only concentrates butynediol by evaporation, and then further concentrates propynyl alcohol by rectification, which does not save energy and investment. technological innovation

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
  • Partition plate rectification process and apparatus for propargyl alcohol and butynediol aqueous solution system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] The feed flow rate is 2t / h, the reaction selectivity ratio of propynyl alcohol and butynediol is 0.99, the water content is 89.3%, the feed temperature is 35°C, and the pressure of the feed reaches 0.2Mpag after being pressurized by a pump.

[0027] The 2t / h feed is heated to 50°C after passing through the preheater (2), and then sent to the middle part of the clapboard rectification tower (1). The upper part of the tower is filled with 6m mesh corrugated structured packing as a public rectification section, and the lower part is equipped with 5 layers The sieve tray is used as a common stripping section, and the middle part is divided by a 13.5m-high partition. The feed side is filled with 10m mesh corrugated structured packing for feed pre-separation, and the output side is filled with 8m mesh corrugated structured packing for products. Purification side mining. The diameter of the partition rectifying column (1) is 1000mm. The operating pressure is controlled at -0....

example 2

[0032] The feed flow rate is 4t / h, the reaction selectivity ratio of propynyl alcohol and butynediol is 0.67, the water content is 90.46%, the feed temperature is 35°C, and the feed pressure reaches 0.2Mpag after being pressurized by a pump.

[0033] The 4t / h feed is heated to 50°C after passing through the preheater (2), and then sent to the middle part of the clapboard rectification column (1). The upper part of the tower is filled with 6m mesh corrugated structured packing as a public rectification section, and the lower part is equipped with 5 layers The sieve tray is used as a common stripping section, and the middle part is divided by a 13.5m-high partition. The feed side is filled with 10m mesh corrugated structured packing for feed pre-separation, and the output side is filled with 8m mesh corrugated structured packing for products. Purification side mining. The diameter of the partition rectifying column (1) is 1400mm. The operating pressure is controlled at -0.03Mpa...

example 3

[0038] The feed flow rate is 6t / h, the reaction selectivity ratio of propynyl alcohol and butynediol is 1.54, the water content is 70%, the feed temperature is 20°C, and the feed pressure reaches 1.0Mpag after being pressurized by a pump.

[0039] The 6t / h feed is heated to 42°C after passing through the preheater (2), and sent to the middle part of the partitioned rectification column (1). The 2m random Pall ring packing is used as the common stripping section, and the middle part is divided by a partition with a height of 15m. The feed side is filled with 12m random Pall ring packing for feed pre-separation, and the output side is filled with 10m random abalone Er ring packing is used for product purification side mining. The diameter of the partition rectifying column (1) is 1600mm. The operating pressure is controlled at 0.2Mpag, the temperature at the top of the tower is 140°C, and the temperature at the bottom of the tower is 150°C.

[0040] The gas phase at the top of...

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 partition plate rectification process and apparatus for a propargyl alcohol and butynediol aqueous solution system. After the gas phase and solid phase of raw materials from a reaction unit are removed, a mixed material of propargyl alcohol, water and butynediol enters a partition plate rectification tower through a preheater; a reboiler using a heating medium is arranged at the bottom of the tower; the gas phase vaporized by the reboiler enters a condenser from the top of the tower;the material is condensed into a liquid phase, and then the liquid phase enters a reflux tank; tail gas of the reflux tank is discharged to a tail gas system; after the liquid phase material of the reflux tank is pressurized by a reflux pump; part of the liquid phase material is extracted as a propargyl alcohol solution product, and part of the liquid phase material is conveyed to the top of the tower so as to be subjected to reflux; a side-collection material of the partition rectification tower is pressurized by a side-collection pump, exchanges heat with a fed material and then is discharged; and the butynediol solution at the bottom of the tower is pressurized by a tower bottom pump and then is extracted. The separation of the propargyl alcohol and butynediol from water is realized, and the material loss is less; compared with that of a conventional process, the energy consumption of the method is reduced by 20-30%. equipment is less, and investment is less.

Description

technical field [0001] The invention relates to a clapboard rectification process and equipment for propynyl alcohol and butynediol aqueous solution system, which uses the clapboard rectification process and equipment to realize the separation of propynyl alcohol, butynediol and water, and is applied to propynyl alcohol and butynediol Distillation and separation of acetylene alcohol and butynediol aqueous solution. Background technique [0002] Formaldehyde and acetylene are used as raw materials, water is used as a solvent, and under the action of a catalyst, a certain temperature and pressure are reached to react to produce propynyl alcohol and butynediol. By controlling the reaction conditions, the reaction selectivity ratio of propynyl alcohol to butynediol can be controlled between 4 and 0.25. The noncondensable gas dissolved in the reaction product is removed by decompression, and the solid catalyst is removed by filtration. The remaining main component is about 90% w...

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): C07C29/80C07C29/76C07C33/042C07C33/046
CPCC07C29/80C07C33/046C07C33/042
Inventor 黄国强王国锋苏国良王乃治
Owner TIANJIN UNIV
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