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Active carbon filter screen and preparation method thereof

A technology of activated carbon and filter screen, which is applied in the direction of separation methods, dispersed particle filtration, chemical instruments and methods, etc., can solve problems such as inability to remove, and achieve the effects of efficient removal, wide application range, and high filtration efficiency

Active Publication Date: 2015-11-11
HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current HEPA filter cannot effectively remove formaldehyde and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An activated carbon filter screen, whose raw materials are composed of the following components by weight: 100 parts of 400 mesh apricot shell activated carbon, 30 parts of 400 mesh sepiolite, 30 parts of alumina powder, 0.5 part of nano silver glue, and 10 parts of formaldehyde trapping agent. The formaldehyde trapping agent is 5 parts by weight of 5,5-dimethylimidazolidine-2,4-dione and 2-methyl-2-acrylic acid-2-(2-oxo-1-imidazolinyl) ethyl A blend of 5 parts by weight of base ester.

[0037] The preparation process is as follows:

[0038] (1) After crushing and sieving the raw materials, they are mixed in proportion to form a mixture;

[0039] (2) Put the mixture obtained in step (1) in a ball mill for 24 hours to prepare a slurry; add water to the ball mill during ball milling, where the weight of the water accounts for 80% of the weight of the solid mixture;

[0040] (3) After the ball milled slurry is fully stirred, the slurry is pumped into the mud press, filtered and d...

Embodiment 2

[0046] According to the method described in Example 1, the formaldehyde trapping agent was replaced with 10 parts by weight of 5,5-dimethylimidazolidine-2,4-dione.

Embodiment 3

[0048] According to the method described in Example 1, the formaldehyde trapping agent was replaced with 10 parts by weight of 2-methyl-2-acrylic acid-2-(2-oxo-1-imidazolinyl) ethyl ester.

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Abstract

The invention provides an active carbon filter screen and a preparation method thereof. The active carbon filter screen comprises the following components in parts by weight: 80-100 parts of active carbon, 20-40 parts of sepiolite, 10-30 parts of aluminum oxide powder, 0.2-2 parts of nano silver colloid and 5-15 parts of a formaldehyde capturing agent. The components of the active carbon filter screen are toxin-free and environmentally friendly so that the active carbon filter screen can be applied to an efficient air filter, can be used for efficiently removing formaldehyde and has a wide applicable range.

Description

Technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and specifically relates to an activated carbon filter screen. Background technique [0002] Formaldehyde is one of the most serious indoor organic gas pollutants. It has very high toxicity. In June 2004, a report published by the International Center for Cancer Research (IARC) of the World Health Organization stated that high concentrations of formaldehyde can cause ear, nose, and throat cancer. For other physical diseases, on the priority control list of toxic chemicals in my country, the first is dioxin, and the second is formaldehyde. Therefore, formaldehyde is extremely harmful to human health. Nowadays, it is more and more common for people to decorate offices, meeting rooms and living rooms, and the requirements for the airtightness of the space are getting higher and higher, making the exchange of indoor and outdoor air less and less. When the national health, construction and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/10B01D53/72
Inventor 石锋
Owner HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
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