Unlock instant, AI-driven research and patent intelligence for your innovation.

A self-assembled catalyst coating filter material and preparation method thereof

A catalyst coating, catalyst technology, applied in chemical instruments and methods, separation methods, dispersed particle filtration, etc., can solve the problems of high treatment cost, large floor space, complex system, etc., to improve coverage and prolong service life , the effect of simple process

Active Publication Date: 2018-09-07
TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a self-assembled catalyst coating filter material to solve the problem that most of the flue gas purification in the prior art requires the removal of gas pollutants and dust removal separately, the system is complex, the floor space is large, and the treatment high cost problem

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
  • A self-assembled catalyst coating filter material and preparation method thereof
  • A self-assembled catalyst coating filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A preparation method for a self-assembled catalyst coating filter material, comprising the steps of:

[0044] Prepare mixed solution a so that it contains 10g / L cationic polyelectrolyte (a mixed solution composed of polyallylamine hydrochloride and polyvinylamine in a volume ratio of 3:1), 10g / L triethylenetetramine, 0.1mol / Inorganic salt of L (mass ratio of sodium chloride and sodium sulfate 1:1); completely immerse the glass fiber filter material in the mixture a, deposit for 15 minutes; use water as solvent, prepare MnO with a mass fraction of 4% 2 / TiO 2 Catalyst dispersion, and fully stirred to disperse, the MnO 2 / TiO 2 The particle size of nanoparticles is 200nm; take out the glass fiber filter material from the mixture a, and dry it thoroughly in hot air at 70°C; immerse the dried glass fiber filter material in the dispersion liquid b, and let it stand for 15 minutes Thoroughly dry with hot air at 70°C; put the dried glass fiber filter into an oven, raise th...

Embodiment 2

[0046] A preparation method for a self-assembled catalyst coating filter material, comprising the steps of:

[0047] Prepare mixed solution a, make it comprise the anionic polyelectrolyte (polystyrene sulfonic acid) of 20g / L, the polyisocyanate of 5g / L, the inorganic salt (ammonium chloride) of 0.05mol / L; Completely submerge in the mixture a, let it stand for 15 minutes, take out the excess solution, and then dry it thoroughly in hot air at 80°C; prepare a Pt metal nanoparticle N-N dimethylformamide dispersion with a mass fraction of 6% , use a spray gun to evenly spray onto the surface of the dried polyphenylene sulfide filter material, make it fully wet, let it stand for 10 minutes, prick off the excess dispersion liquid, dry it with hot air at 80°C, bake at 160°C for 15 minutes, and take it out naturally Cool down. According to scanning electron microscope observation, there is a layer of Pt metal nanoparticles on the fiber surface of the polyphenylene sulfide filter mater...

Embodiment 3

[0049] A preparation method for a self-assembled catalyst coating filter material, comprising the steps of:

[0050] Prepare mixed solution a, make it comprise the cationic polyelectrolyte (polyethylene amine) of 15g / L, the N-methylolacrylamide of 10g / L, the inorganic salt (potassium chloride) of 0.15mol / L; The ethylene filter material is completely submerged in the mixed solution a, and deposited for 15 minutes; using water as a solvent, prepare V with a mass fraction of 3%. 2 o 5 / TiO 2 dispersion, and fully stirred evenly, the V 2 o 5 / TiO 2 The particle size of the catalyst nanoparticles is 100nm; the polytetrafluoroethylene filter material is taken out from the mixed liquid a, and thoroughly dried in hot air at 70°C; the dispersion liquid b is evenly sprayed onto the dried polytetrafluoroethylene filter material with a spray gun. until the PTFE filter material is completely soaked; after standing for 15 minutes, dry it thoroughly with hot air at 70°C; put the dried P...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a self-assembled catalyst coating filter material which comprises a filter material substrate, an adsorption cured layer and a catalyst nano-particle layer. The filter material substrate, the adsorption cured layer and the catalyst nano-particle layer are laminated, catalyst nano-particles of the catalyst nano-particle layer permeate into the adsorption cured layer, particles of the adsorption cured layer and the catalyst nano-particle layer do not only exist on the whole surface of the filter material substrate, but also exist on surfaces of all fibers of the filter material substrate, and overall coverage rate reaches 90% and above. By using the technical scheme, the self-assembled catalyst coating filter material is high in catalyst coating coverage rate and has more catalytic reaction sites, a catalyst coating layer and the fibers gain high binding force, with high dust grain washing resistance.

Description

technical field [0001] The invention belongs to the field of filter materials, in particular to a self-assembled catalyst coating filter material and a preparation method thereof. Background technique [0002] As we all know, PM2.5 (fine particulate matter) and smog weather have an increasingly serious impact on people's lives and health, while industrial flue gas emissions (thermal power plants, cement plants, waste incineration plants, etc.) 2 , NO x Pollutants such as , VOCs (volatile organic compounds) and dioxins are one of the main factors that make the concentration of PM2.5 abnormal. In order to improve the air pollution situation, the Ministry of Environmental Protection promulgated and implemented the new "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2011), setting the most stringent pollutant emission limits in the world. In the "Guiding Opinions on Promoting Joint Prevention and Control of Air Pollution", the General Office of the Sta...

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): B01D46/00B01D53/86
CPCB01D46/0027B01D53/86B01D2255/10B01D2255/20707B01D2255/20723B01D2255/2073
Inventor 汪家道杜川
Owner TIANJIN RES INST FOR ADVANCED EQUIP TSINGHUA UNIV