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

Composite reverse osmosis membrane as well as preparation method and application thereof

A technology of reverse osmosis membrane and interfacial polymerization, applied in the field of membrane separation, can solve the problems of few patent reports and complex preparation process of reverse osmosis membrane

Pending Publication Date: 2021-09-07
CHINA PETROLEUM & CHEM CORP +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above methods all increase the water flux of the composite reverse osmosis membrane, but the additives are usually introduced in the water phase with a high content, and there are also situations that complicate the preparation process of the reverse osmosis membrane; adding additives to the organic phase improves the performance of the composite membrane There is a theoretical possibility, but there are few related patent reports

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
  • Composite reverse osmosis membrane as well as preparation method and application thereof
  • Composite reverse osmosis membrane as well as preparation method and application thereof
  • Composite reverse osmosis membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Weigh a certain amount of water-phase monomer m-phenylenediamine (MPD) in a volumetric flask, adjust the volume to the mark with deionized water, and ultrasonically dissolve to form a homogeneous water-phase solution containing 2.0 wt / v% MPD. Weigh a certain amount of organic phase monomer trimesoyl chloride (TMC) and Polarclean in a volumetric flask, use ISOPAR solvent oil to set the volume to the mark, and ultrasonically dissolve it into a solution containing 0.1wt / v% TMC and 0.01wt / v% Polarclean Homogeneous organic phase solution. Use the above polysulfone porous support base membrane with a molecular weight cut-off of 30,000 to 50,000 to soak and contact the above aqueous phase solution for 60 seconds. Then pour off the excess aqueous phase solution, roll the surface of the membrane dry with a clean rubber roller, and then wet the membrane with the above organic phase solution for 30 seconds. After that, the excess organic phase solution was poured off, and then th...

Embodiment 2

[0057] When preparing the organic phase solution, the mass concentration of the organic phase additive Polarclean added in the homogeneous solution was 0.04%, and the rest of the methods and steps were the same as in Example 1, and the properties of the prepared composite reverse osmosis membrane were listed in Table 1.

Embodiment 3

[0059] When preparing the organic phase solution, the mass concentration of the organic phase additive Polarclean added in the homogeneous solution was 0.1%, and the remaining methods and steps were the same as in Example 1. The properties of the prepared composite reverse osmosis membrane are listed 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

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
freezing pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite reverse osmosis membrane as well as a preparation method and application thereof. The composite reverse osmosis membrane comprises a bottom layer, a middle porous support layer and a surface active separation layer, wherein the active separation layer is a polyamide active separation layer formed by performing interfacial polymerization on a water phase containing polyamine and an organic phase containing 5-(dimethylamino)-2-methyl-5-oxovalerate and polyacyl chloride. By adding the organic phase additive which is simple in variety and small in dosage, the prepared composite reverse osmosis membrane has excellent water flux and keeps good interception characteristic. In addition, the preparation method is simple and convenient to operate and has great industrial application prospects.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a composite reverse osmosis membrane and its preparation method and application. Background technique [0002] Reverse osmosis technology is a liquid separation technology with no phase change, low energy consumption, green environmental protection and high water yield. It not only plays an important role in seawater desalination, sewage treatment and ultrapure water preparation, but is also gradually being applied In petrochemical, metallurgy, light industry, electronics, food, textile, medicine, biological engineering and other fields. As the core of the reverse osmosis process, the research and development and application of reverse osmosis membranes are being carried out extensively. At present, more than 90% of reverse osmosis membranes on the market are composite reverse osmosis membranes, that is, reverse osmosis membranes obtained by compounding an ultra-thin...

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): B01D69/12B01D69/02B01D71/56B01D61/02
CPCB01D69/12B01D69/02B01D71/56B01D61/025
Inventor 刘轶群屈潇赛潘国元张杨于浩
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