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

Method for separating glycol and butylene glycol

A technology of butanediol and ethylene glycol, which is applied in the field of separation of ethylene glycol and butanediol, can solve the problem of high energy consumption of separation, and achieve the effect of low energy consumption of separation, good technical effect, and total energy saving

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of high separation energy consumption when ethylene glycol and butanediol are separated by azeotropic rectification at present, and a new method for separating ethylene glycol and butanediol is provided

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 glycol and butylene glycol
  • Method for separating glycol and butylene glycol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] according to figure 1 Shown flow process, methyl alcohol with 3.00 g / min and ethylene glycol, the mixture of 1,2-butanediol (the mass fraction of 1,2-butanediol is 15.00%) with 5.00 g / min respectively from bed layer number The 1st and 4th beds of the simulated moving bed are 8, filled with Suqing brand DA201-C resin, the operating pressure is normal pressure, the operating temperature is 40°C, and the space velocity is 1.5 hours -1 , the flow rate of the mixture of desorbent and 1,2-butanediol from bed 2 is 2.75 g / min, the flow rate of the mixture of desorbent and ethylene glycol from bed 7 is 5.25 g / min, extract and raffinate The liquid is separated by 1,2-butanediol separation tower and ethylene glycol separation tower respectively, and through ordinary distillation, the mass concentration of 1,2-butanediol is 99.95%, the mass concentration of ethylene glycol is 99.99% and the resolving agent is recovered The mass concentration is 100.00%, and the required distillati...

Embodiment 2

[0016] by similar figure 1 Shown flow process, water with 0.5 g / min and ethylene glycol, the mixture of 1,4-butanediol (the mass fraction of 1,4-butanediol is 1.00%) with 5.0 g / min respectively from bed layer The first and third beds of a simulated moving bed of 4 are filled with Suqing brand DA201-A resin, the operating pressure is 1MPa, the operating temperature is 20°C, and the space velocity is 0.2 hours -1 , the flow rate of the mixture of desorbent and 1,4-butanediol from bed 3 is 0.45 g / min, the flow rate of the mixture of desorbent and ethylene glycol from bed 4 is 5.05 g / min, and the extract and raffinate The liquid is separated by 1,4-butanediol separation tower and ethylene glycol separation tower respectively, and by ordinary distillation, the mass concentration of 1,4-butanediol is 98.15%, the mass concentration of ethylene glycol is 100.00%, and the resolving agent is recovered The mass concentration is 100.00%, and the required distillation energy consumption i...

Embodiment 3

[0018] by similar figure 1 Shown flow process, acetone with 10.00 g / min and ethylene glycol, the mixture of 1,3-butanediol (the mass fraction of 1,3-butanediol is 80.00%) with 5.00 g / min respectively from bed layer number The 1st and 14th beds of a simulated moving bed of 24 are filled with Suqing brand DA201-D resin, the operating pressure is 0.5MPa, the operating temperature is 50°C, and the space velocity is 5.0 hours-1, from the bed 6. Obtaining the flow rate of the mixture of resolving agent and 1,3-butanediol is 10.65 g / min, and the flow rate of the mixture of resolving agent and ethylene glycol obtained from bed 22 is 4.35 g / min. , 3-butanediol separation tower and ethylene glycol separation tower are separated, and through common distillation, obtain 1,3-butanediol mass concentration is 99.99%, ethylene glycol mass concentration is 99.99% and reclaims analytical agent mass concentration and is 100.00 %, the required distillation energy consumption is shown in Table 1....

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 method for separating glycol and butylene glycol, and mainly aims to solve the problem of high separation energy consumption in separation of glycol and butylene glycol through azeotropic rectification. The method comprises the steps of: putting a glycol solution with butylene glycol content higher than 1% and a strippant into the raw material feeding bed and the strippant feeding bed of a simulated moving bed instrument loaded with an adsorbent, with the extraction solution mixed by the strippant and butylene glycol, and the raffinate mixed by the strippant and glycol, subjecting the extraction solution to separation in a butylene glycol separation tower, recovering the strippant from the tower top, and collecting butylene glycol from the tower kettle, delivering the raffinate into a glycol separation tower, recovering the strippant from the tower top, and collecting glycol from the tower kettle, with the adsorbent selected from at least one of nonfunctional resin or a molecular sieve, and the strippant selected from at least one of polar solvents. The technical method provided in the invention solves the problem well, and can be used in industrial production of glycol and butylene glycol separation.

Description

technical field [0001] The invention relates to a method for separating ethylene glycol and butanediol. Background technique [0002] Ethylene glycol (EG) is an important organic chemical raw material, mainly used in the production of polyester fiber, antifreeze, unsaturated polyester resin, lubricant, plasticizer, nonionic surfactant and explosives, etc. It can be used in industries such as paint, photographic developer, brake fluid and ink, as a solvent and medium for ammonium perborate, and for the production of special solvents such as glycol ether, etc., and has a wide range of uses. [0003] At present, large-scale ethylene glycol production at home and abroad adopts the process route of direct hydration or pressurized hydration. This process is to prepare a mixed aqueous solution of ethylene oxide and water at a ratio of 1:20 to 22 (molar ratio) in a fixed bed. React in the reactor at 130-180°C, 1.0-2.5MPa for 18-30 minutes, all ethylene oxide is converted into mixed...

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): C07C31/20C07C29/76
Inventor 钟禄平肖剑卢咏琰
Owner CHINA PETROLEUM & CHEM CORP
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