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

A kind of gas-phase in-situ oxidation preparation method of MN-CE-FE-CO four-way catalytic function PPS filter material

A mn-ce-fe-co, gas-phase in-situ technology, applied in chemical instruments and methods, heterogeneous catalyst chemical elements, separation methods, etc., can solve the central nervous system, immune system skin damage, high chemical agent treatment cost, poor uniformity of surface loading, etc., to achieve the effect of improving bonding strength and adsorption rate, reducing reaction conditions and parameter control requirements, and optimizing dispersion uniformity.

Active Publication Date: 2021-02-02
SOUTHEAST UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] NO x It is one of the four major air pollutants in my country, and is the main culprit that causes acid rain and various respiratory diseases. The current control method is SCR technology. The commonly used catalyst is titanium vanadium commercial denitrification catalyst, and mercury and its compounds are The most toxic heavy metal pollutants in nature can cause serious damage to the human central nervous system, immune system, kidneys, and skin in a small amount. The control method is mostly flue activated carbon injection technology, whether it is NO x NH 3 -SCR is still a flue activated carbon injection technology for Hg. The construction cost of a single device is high, the reaction conditions are poor, and the service life is short. Therefore, it is necessary to develop a combined pollutant removal technology under low temperature conditions.
[0003] In the invention patent with the application number CN201710655390.X, a "chitosan-coated manganese dioxide-ferric oxide / PPS composite denitrification filter material and its preparation method" is disclosed. The method is to combine MnO 2 -Fe 2 o 3 Catalyst metal oxides are directly loaded onto the PPS filter material by ultrasonic waves, and then a layer of chitosan film is coated on the surface of the loaded PPS filter material to improve the MnO 2 , Fe 2 o 3 However, the main problems of this method are: 1. The chitosan film will cover the catalytic active sites on the surface while covering the surface of the PPS filter material, reducing the catalytic activity of the filter material; 2. With MnO 2 , Fe 2 o 3 PPS filter material impregnated with particle suspension not only has a slow adsorption rate, but also has poor surface load uniformity and low dispersion due to large particles;
[0004] In the invention patent with the application number 201710679961.3, a "composite filter material with in-situ loading denitrification and anti-sulfur catalyst and its preparation method" is disclosed. In this method, sodium dodecylbenzenesulfonate is selected to activate and modify the PPS filter material. Then add cobalt ions to adsorb on the surface of the filter material, and finally use potassium dichromate as an oxidant to generate Cr on the surface of the filter material. 2 o 3 and CoO x To prepare denitrification and anti-sulfur functional composite filter material, but the potassium dichromate oxidant used in this process is a toxic chemical, and there will be major safety hazards, high chemical treatment costs and environmental pollution during industrial production

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 kind of gas-phase in-situ oxidation preparation method of MN-CE-FE-CO four-way catalytic function PPS filter material
  • A kind of gas-phase in-situ oxidation preparation method of MN-CE-FE-CO four-way catalytic function PPS filter material
  • A kind of gas-phase in-situ oxidation preparation method of MN-CE-FE-CO four-way catalytic function PPS filter material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] A gas-phase in-situ oxidation preparation method of a Mn-Ce-Fe-Co four-way catalytic function PPS filter material, comprising the following steps:

[0029] (1) For commercial PPS filter material, wash and dry the impurities on the surface of the filter material with deionized water, cut the washed PPS filter material into discs with a diameter of Ø25mm, weigh and record the quality parameters of the filter material, and place in 0.10g / Viscosity modification was carried out in mL organosilicon-modified polyurethane solution for 1h;

[0030] (2) Take out the impregnated and modified PPS filter material in step (1), drain it under ambient conditions, and dry it in a low-temperature drying oven at 100°C for 30 minutes;

[0031] (3) Weigh 0.35g Mn(NO 3 ) 2 , 0.723g Ce(NO 3 ) 3 , 0.07g Fe(NO 3 ) 2 , 0.0245g Co(NO 3 ) 2 Dissolve in 50mL deionized water, immerse the dried PPS filter material in step (2) into the salt solution of the catalytically active component of th...

example 2

[0036] A gas-phase in-situ oxidation preparation method of a Mn-Ce-Fe-Co four-way catalytic function PPS filter material, comprising the following steps:

[0037] (1) For commercial PPS filter material, wash the impurities on the surface of the filter material with deionized water and dry, cut the washed PPS filter material into discs with a diameter of Ø25mm, weigh and record the quality parameters of the filter material, and place in 0.08g / Viscosity modification was carried out in mL organosilicon-modified polyurethane solution for 1h;

[0038] (2) Take out the impregnated and modified PPS filter material in step (1), drain it under ambient conditions, and dry it in a low-temperature drying oven at 100°C for 30 minutes;

[0039] (3) Weigh 0.423g Mn(NO 3 ) 2 , 0.886g Ce(NO 3 ) 3 , 0.096g Fe(NO 3 ) 2 , 0.045g Co(NO 3 ) 2 Dissolve in 50mL deionized water, immerse the dried PPS filter material in step (2) in the salt solution of the catalytically active component of the...

example 3

[0044] A gas-phase in-situ oxidation preparation method of a Mn-Ce-Fe-Co four-way catalytic function PPS filter material, comprising the following steps:

[0045] (1) Select qualified commercial PPS filter material, wash and dry the impurities on the surface of the filter material with deionized water, cut the washed PPS filter material into discs with a diameter of Ø25mm, weigh and record the quality parameters of the filter material, and place in Viscosity modification in 0.15g / mL silicone-modified polyurethane solution for 1h;

[0046] (2) Take out the impregnated and modified PPS filter material in step (1), drain it under ambient conditions, and dry it in a low-temperature drying oven at 100°C for 30 minutes;

[0047] (3) Weigh 0.54g Mn(NO 3 ) 2 , 0.945g Ce(NO 3 ) 3 , 0.12g Fe(NO 3 ) 2 , 0.043g Co(NO 3 ) 2 Dissolve in 50mL deionized water, immerse the dried PPS filter material in step (2) in the salt solution of the catalytically active component of the Mn, Ce, Fe...

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 discloses a gas-phase in-situ oxidation preparation method of Mn-Ce-Fe-Co four-way catalytic functional PPS filter material. The surface viscosity of polyphenylene sulfide (PPS) is modified by the agent. After impregnation, adsorption, and secondary low-temperature drying and dehydration, gas-phase oxidation occurs in contact with ozone at a concentration of 10mg / L-240mg / L, and the active metal ions are directly filtered on the PPS. The surface of the material fiber is oxidized in situ into a highly catalytically active oxide form, and the preparation of the Mn-Ce-Fe-Co four-way catalytic function PPS filter material is completed. The preparation method of the present invention takes gas-phase oxidation as the core innovation point, has wide sources of materials, simple and stable gas storage, simple safety leakage inspection, and high production safety.

Description

technical field [0001] The present invention relates to a preparation method of a catalytic functional filter material, in particular to a gas-phase in-situ oxidation preparation method of a Mn-Ce-Fe-Co quaternary catalytic functional PPS filter material, so as to realize the integration of dust removal, denitrification and mercury removal , for NO in industry, smelting industry and coal-fired power plants x Catalysis and HgO oxidation removal. Background technique [0002] NO x It is one of the four major air pollutants in my country, and is the main culprit that causes acid rain and various respiratory diseases. The current control method is SCR technology. The commonly used catalyst is titanium vanadium commercial denitrification catalyst, and mercury and its compounds are The most toxic heavy metal pollutants in nature can cause serious damage to the human central nervous system, immune system, kidneys, and skin in a small amount. The control method is mostly flue activ...

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): B01D53/86B01D53/56B01D53/64B01D39/14B01J23/889
CPCB01D39/14B01D53/8625B01D53/8665B01J23/002B01J23/8892B01J2523/00B01J2523/3712B01J2523/72B01J2523/842B01J2523/845
Inventor 刘猛李银生段钰锋
Owner SOUTHEAST 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