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Air purifying filter screen and preparation method thereof

An air purification and filter technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of difficult application of air purifier products, limited application range, expensive price, etc., to achieve firm adhesion and enhanced use Safety performance, the effect of small wind resistance

Active Publication Date: 2016-11-16
UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, photocatalytic decomposition materials can only be used under the condition of light, and are not suitable for air purifier equipment that runs all day long; precious metal materials have excellent catalytic performance, but their high price limits their application range, and it is difficult to apply to common In air purifier products; due to their low price and high catalytic activity, transition metals, rare earth metals and their oxides have begun to attract people's attention and become catalyst materials

Method used

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  • Air purifying filter screen and preparation method thereof
  • Air purifying filter screen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 24.98g of manganese nitrate hexahydrate, 2.63g of nickel sulfate hexahydrate, 1.33g of cerium nitrate hexahydrate and 1g of carboxymethyl cellulose in 200g of pure water in sequence, and stir to fully dissolve them until a clear mixed salt solution is formed. Prepare a 2mol / L sodium hydroxide solution, add 9.5mL of the above sodium hydroxide to the above mixed salt solution to adjust the pH of the solution to 10, and with vigorous stirring, after reacting for 2 hours, suction filter the mixed solution to obtain a filter residue for use .

[0039]Take a piece of ceramic foam with a suitable size, clean it and dry it for use, and prepare a 1mol / L hydrochloric acid solution and a 2mol / L CMC solution. Put the above-mentioned foamed ceramic sheet into 1mol / L hydrochloric acid solution, soak it at room temperature for 2 hours, take it out and wash it with pure water for later use; then put the activated foamed ceramic piece into 2mol / L CMC solution, soak it at room temper...

Embodiment 2

[0043] Add 0.28g manganese sulfate monohydrate, 0.22g nickel nitrate hexahydrate, 0.03g cerium nitrate hexahydrate and 0.02g hexadecyltrimethylammonium bromide to 200g pure water in turn, stir to dissolve them fully until a clear Mix the salt solution. Prepare a 2 mol / L sodium hydroxide solution, add 5 mL of the above sodium hydroxide to the above mixed salt solution to adjust the pH of the solution to 8, and stir vigorously. After reacting for 30 hours, suction filter the mixed solution to obtain a filter residue for use.

[0044] Take a piece of ceramic foam with a suitable size, clean it and dry it for use, and prepare a 1.5 mol / L sulfuric acid solution and a 5 mol / L carboxymethyl cellulose solution. Put the above-mentioned foam ceramic sheet into 1.5mol / L sulfuric acid solution, soak it at room temperature for 0.5h, take it out and wash it with pure water for later use; then put the above-mentioned activated foam ceramic into 5mol / L carboxymethyl fiber In the plain soluti...

Embodiment 3

[0048] Add 0.88g manganese nitrate tetrahydrate, 0.21g nickel sulfate hexahydrate, 0.33g cerium nitrate hexahydrate and 2g hexadecyltrimethylammonium bromide solution to 200g pure water in sequence, and stir to fully dissolve until a clear Mix the salt solution. Prepare a 2 mol / L sodium hydroxide solution, add 7 mL of the above sodium hydroxide to the above mixed salt solution to adjust the pH of the solution to 9, and with vigorous stirring, after reacting for 20 hours, suction filter the mixed solution to obtain a filter residue for use.

[0049] Take a piece of ceramic foam with a suitable size, clean it and dry it for use, and prepare a 0.1 mol / L hydrofluoric acid solution and a 4 mol / L CMC solution. Put the above-mentioned foam ceramic sheet into 0.1mol / L hydrofluoric acid solution, soak it at room temperature for 0.1h, take it out and wash it with pure water for later use; then put the above-mentioned activated foam ceramic into 4mol / L CMC solution After immersing at ro...

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Abstract

The invention discloses an air purifying filter screen and a preparation method thereof; the air purifying filter screen is composed of a carrier and a catalyst; the carrier is composed of foam ceramics, and the foam ceramics are activated by an acid activator and then are subjected to surface modification by a surface modification agent; the catalyst comprises manganese oxide, nickel oxide and cerium oxide. The preparation method of the air purifying filter screen comprises the steps: soaking the foam ceramics with the acid activator, carrying out activating treatment of the surface and internal gaps of the foam ceramics with the acid activator, then soaking the cleanly washed foam ceramics with the surface modification agent, dissolving a manganese salt, a nickel salt, a cerium salt and a surfactant in water, stirring the components at room temperature, then adding a strong alkali, adjusting the pH to 8.0-10.5, carrying out a reaction for 1-30 h, then filtering, and mixing the obtained filter slag with a silica micro-powder to obtain slurry; spaying the slurry to the surface and the pore passage interior of the carrier by a spraying machine; and finally, calcining for 0.5-6 h at the temperature of 200-450 DEG C. The prepared purifying filter screen has the characteristics of small wind resistance, firm adhesion and high purification efficiency.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an air purification filter and a preparation method thereof. Background technique [0002] With the development of industry, the problem of air pollution has become increasingly serious, and indoor air pollution has also begun to threaten human health. At present, in the industry of air purification products, the purification effect of particulate pollutants in the air can generally meet the needs of people's lives. However, indoor air also contains a large amount of volatile harmful gases from the atmosphere and from furniture and building materials. Formaldehyde and other harmful gas components emitted, these harmful gases will seriously damage the health of the human body, and it is difficult to remove through simple filtration. [0003] At present, air purifier products are mainly used for targeted air purification treatment, while mainstream air purifier products on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J23/889
CPCB01D39/14B01J23/002B01J23/8892B01J2523/00B01J2523/3712B01J2523/72B01J2523/847
Inventor 黄建国王康肖鸽
Owner UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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