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Core filter net of air purifier of high mercury workshop and preparation method and application thereof

An air purifier and filter screen technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., to achieve cost savings, huge social and economic benefits

Active Publication Date: 2017-07-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, except for ordinary masks and conventional gas masks, there are basically no other air-purifying products. Therefore, high-mercury workshops urgently need products that can actively and efficiently reduce Hg concentrations to prevent workers from passively inhaling too much gaseous mercury.

Method used

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  • Core filter net of air purifier of high mercury workshop and preparation method and application thereof
  • Core filter net of air purifier of high mercury workshop and preparation method and application thereof
  • Core filter net of air purifier of high mercury workshop and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of sponge loaded with nano-selenium

[0032] Disperse 1.6g of dopamine hydrochloride in 5L of deionized water, stir evenly, and stir the reaction with a constant temperature magnetic stirrer at 20°C for 3 hours at a speed of 500r / min. After a period of reaction, the solution in the beaker changes from colorless to Turn brown into black again; After obtaining described polydopamine aqueous solution, add the sponge that size is 250W*5D*385H (sponge volume is 0.5dm 3 ), stirred and adsorbed with a constant temperature magnetic stirrer at 25°C for 1 hour, after a period of adsorption, the solution changed from black to brown. The above same steps were repeated for 3 groups, which were recorded as experimental groups 1, 2, and 3. Add sodium selenite crystal 0.87g, 2.61g, 4.35g respectively in experimental group 1,2,3 so that the concentration of sodium selenite is respectively 0.001mol / L, 0.003mol / L, 0.005mol / L, then Add 1.76g, 3.52g, and 8.8g of L-ascorbic aci...

Embodiment 2

[0035] Preparation of sponge loaded with nano-selenium

[0036] Disperse 16g of dopamine hydrochloride in 5L of deionized water, stir evenly, and stir the reaction with a constant temperature magnetic stirrer at 30°C for 8 hours at a speed of 2000r / min. After a period of reaction, the solution in the beaker changes from colorless to Be brown and become black again; After obtaining described polydopamine aqueous solution, add the sponge that size is 250W*50D*385H (sponge volume is 5dm 3 ), stirred and adsorbed with a constant temperature magnetic stirrer for 3 hours at 25°C, after a period of adsorption, the solution changed from black to brown. The above same steps were repeated for 3 groups, which were recorded as experimental groups 1, 2, and 3. Add sodium selenite crystal 4.35g, 8.7g, 17.4g respectively in experimental group 1,2,3 so that the concentration of sodium selenite is respectively 0.005mol / L, 0.01mol / L, 0.02mol / L, then Add 8.8g, 17.6g, and 35.2g of L-ascorbic ac...

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Abstract

The invention discloses a core filter net of an air purifier in a high mercury workshop and a preparation method thereof, and belongs to design of a core filter net of an air purifier in a high mercury workshop. The preparation method is characterized in that a nanometer selenium-loaded sponge layer is used as one of core filter nets of the air purifier; the core filter net is sequentially formed by overlapping a HEPA (high efficiency particulate air) net, the nanometer selenium-loaded sponge layer and an HEPA net. The preparation method has the advantages that the nanometer selenium-loaded sponge layer is innovatively designed, and is used as one of core filter nets in the air purifier; by utilizing the sponge filter net, the gaseous mercury in air in the workshop can be actively and efficiently removed; when the initial concentration of Hg (mercury) is 20000 to 30000ng / m<3>, the high-efficiency removal rate of Hg is about 97% to 99%, and the huge social benefit and economic benefit are realized.

Description

technical field [0001] The invention relates to a core filter screen of an air purifier in a high-mercury workshop, a preparation method and application thereof. Background technique [0002] Mercury and mercury compounds are widely used in various industries, such as chemical industry, electrical industry, metallurgical casting, medical industry, military industry and other industries. In the workshops of many mercury-related industries, the concentration of Hg vapor in the air is very high. For workers working in high-mercury workshops, in order to avoid mercury harm to their bodies, most workshops choose to be equipped with ordinary masks and conventional gas masks. However, except for ordinary masks and conventional gas masks, there are basically no other air-purifying products. Therefore, high-mercury workshops urgently need products that can actively and efficiently reduce Hg concentration to prevent workers from passively inhaling too much gaseous mercury. [0003] ...

Claims

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Application Information

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IPC IPC(8): B01D46/12B01D53/04
CPCB01D46/12B01D53/04B01D2253/1122B01D2257/602B01D46/62
Inventor 潘响亮易昌毓郑诗仪
Owner ZHEJIANG UNIV OF TECH
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