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

Method of preparing supporting type ionic liquid membrane by using high-pressure carbon dioxide under low temperature

A high-pressure carbon dioxide and ionic liquid technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve problems such as unstable performance, difficult membrane production, low efficiency, etc., achieve good liquid filling quality and improve mechanical stability , high efficiency effect

Inactive Publication Date: 2014-02-05
DALIAN UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the difficulties of film formation caused by the high viscosity of traditional ionic liquids and the low efficiency and unstable performance of the traditional "coating" method, this invention proposes a new preparation method for supported ionic liquid membranes to achieve efficient preparation and stable film formation. , the film thickness can be controlled and adjusted, so as to realize the efficient separation of gas mixture and more effective removal of acid gases in flue gas

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 of preparing supporting type ionic liquid membrane by using high-pressure carbon dioxide under low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A ceramic tube with a pore size of 20nm, an inner diameter of 7mm, an outer diameter of 10mm, and a length of 250mm is inserted into the membrane module 13. Ionic liquid [omim][PF 6 ] And the agitator into the storage tank 15, after sealing, connected to the film making device. Then the system is evacuated, the rest of the valves are opened except the pressure reducing valve 2 and the regulating valve 14, and the pressure reducing valve 2 is adjusted to slowly send carbon dioxide into the system and replace the air in it. After about 10 minutes, all valves are closed. After the emptying is completed, open valves 2, 3, 11, 12, and inject carbon dioxide into the storage tank 15 and the membrane module 13. At this time, turn on the magnetic stirrer so that the carbon dioxide can be fully dissolved in the ionic liquid. The pressure is adjusted by the high-pressure plunger pump 8 to control the system pressure at 10 MPa, and the valves 2, 3, 11, and 12 are closed when the set ...

Embodiment 2

[0018] A ceramic tube with a pore diameter of 20nm, an inner diameter of 7mm, an outer diameter of 10mm, and a length of 250mm is inserted into the membrane module 13. Ionic liquid [bmpy][BF 4 ] And the stirrer are loaded into the storage tank 15, after being sealed, connected to the film making device. Then the system is evacuated, the rest of the valves are opened except the pressure reducing valve 2 and the regulating valve 14, and the pressure reducing valve 2 is adjusted to slowly send carbon dioxide into the system and replace the air in it. After about 10 minutes, all valves are closed. After the emptying is completed, open valves 2, 3, 11, and 12, and inject carbon dioxide into the storage tank 15 and the membrane module 13. At this time, the magnetic stirrer is turned on so that the carbon dioxide can be fully dissolved in the ionic liquid. When the system pressure reaches the set value of 11MPa, the pump 8 and valves 2, 3, 11, 12 are closed, and the oven temperature is...

Embodiment 3

[0020] A ceramic tube with a pore diameter of 10 nm, an inner diameter of 7 mm, an outer diameter of 10 mm, and a length of 250 mm is loaded into the membrane module 13, the ionic liquid [hmim] [Tf2N] and the stirrer are loaded into the storage tank 15, sealed, and connected to the membrane making device. The system is evacuated. Open the rest of the valves except the pressure reducing valve 2 and the regulating valve 14, and then adjust the pressure reducing valve 2 to slowly send carbon dioxide into the system and replace the air in it. After about 12 minutes, close all valves. After the emptying is completed, open valves 2, 3, 11, and 12, and inject carbon dioxide into the storage tank 15 and the membrane module 13. At this time, the magnetic stirrer is turned on so that the carbon dioxide can be fully dissolved in the ionic liquid. After the high pressure plunger pump 8 adjusts the pressure to a set value of 9 MPa, the valves 2, 3, 11, and 12 are closed. The temperature 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 method of preparing a supporting type ionic liquid membrane by using high-pressure carbon dioxide under a low temperature, belonging to the technical field of gas seperation membranes. The method comprises the following steps of: by using inorganic porous support as a basement membrane, carrying out viscosity break and dilution on ionic liquid by using high-pressure carbon dioxide under the low temperature, conveying ionic liquid into a micro-pore channel of the basement membrane by using an impregnating method, and fixing the ionic liquid in micro-pores by using the mutual affect of a porous supporting body and the ionic liquid, and finally simultaneously discharging the ionic liquid and carbon dioxide in a membrane device. The prepared supporting type ionic liquid membrane has the characteristics of the ionic liquid and the porous support material and can be used for removing acid gases in flue gases. The method has the effects and advantages of convenience in membrane preparation, stable membrane formation, controlled thickness, good quality of ionic liquid filling, avoids solvent volatilization, can be widely applied to gas seperation and enrichment and enables the industrial application of supporting type ionic liquid membrane to be possible.

Description

Technical field [0001] The invention belongs to the technical field of gas separation membranes, and relates to a preparation method of an ionic liquid membrane, in particular to a preparation method of a supported ionic liquid membrane that absorbs acid gas in flue gas. Background technique [0002] The removal of acid gas in natural gas (flue gas) is one of the important issues in petrochemical, biomedical industry and environmental engineering. The traditional industrial deacidification method is the alcohol amine method, which has the advantages of low cost, fast absorption, large capacity, etc., but also has some limitations: such as the solvent is easy to volatile, the equipment is easy to corrode, the absorbent is easy to oxidize, and the regeneration energy consumption is high. . In recent years, ionic liquids have become a new technology for flue gas desulfurization and decarbonization due to their advantages such as good stability, hard to volatilize, strong gas solubi...

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): B01D69/10B01D67/00B01D53/22B01D53/14
Inventor 银建中马玉玲徐刚徐琴琴喻文
Owner DALIAN UNIV OF TECH
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