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A formaldehyde scavenger

A formaldehyde scavenger and formaldehyde scavenger technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, dispersed particle separation, etc., can solve secondary pollution, limited formaldehyde removal effect, environmental problems Pollution and other problems, to achieve the effect of mild application conditions

Active Publication Date: 2017-03-22
ZHEJIANG BINGCHONG ENVIRONMENT PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) Those using physical adsorption, such as activated carbon, bamboo charcoal, etc., have limited adsorption capacity, are inconvenient to use, and often need to be replaced, causing secondary pollution;
[0010] (2) Chemical adsorption is adopted. Although the effect of processing formaldehyde is good, the compound added in the scavenger is more toxic and not environmentally friendly. For example, the Chinese invention patent with application number 201410542797.8 discloses a formaldehyde scavenger containing hydrazide (hydrazine) compound with formaldehyde scavenging effect), there is free hydrazine in use, which is toxic, and will cause environmental pollution after long-term use, and affect the health of users in the living room;
[0011] (3) The use effect of some commercially available products will be limited by the application environment. Most formaldehyde scavengers contain titanium dioxide. For example, the Chinese invention patent with application number 201210279279.2 discloses an indoor formaldehyde pollution removal catalyst, which contains titanium dioxide and dioxalic acid Hydrazine, etc., because titanium dioxide is an ultraviolet photocatalyst, the removal effect of formaldehyde is extremely limited under natural light or no light conditions, and has application limitations

Method used

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  • A formaldehyde scavenger
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A formaldehyde scavenger is composed of the following components in weight percentage: 8g of manganese oxide supported on activated carbon, 8g of 2-imidazolidinone, 8g of diatomaceous earth supported titanium dioxide, 0.1g of nano-silver colloid, and 75.9g of pure water.

[0038] The preparation process is as follows:

[0039] (1) Take diatomite-loaded titanium dioxide and nano-silver colloid in the formula amount and add them to 35.9g of pure water, mix and stir for 30 minutes to obtain a mixed solution;

[0040] (2) Add activated carbon-supported manganese oxide and 2-imidazolidinone in the formula amount to 40 g of pure water, stir evenly to obtain a mixed solution;

[0041] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 30 minutes to obtain the finished product.

Embodiment 2

[0043]A formaldehyde scavenger, consisting of the following components by weight percentage: activated carbon supported manganese oxide 8g, 1-(2-hydroxyethyl)-2-imidazolidinone 8g, diatomaceous earth supported titanium dioxide 8g, nano silver colloid 0.1g , Pure water 75.9g.

[0044] The preparation process is as follows:

[0045] (1) Take diatomite-loaded titanium dioxide and nano-silver colloid in the formula amount and add them to 35.9g of pure water, mix and stir for 30 minutes to obtain a mixed solution;

[0046] (2) Take the activated carbon-loaded manganese oxide and 1-(2-hydroxyethyl)-2-imidazolidinone in the formula amount and add them to 40g of pure water, stir evenly to obtain a mixed solution;

[0047] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 30 minutes to obtain the finished product.

Embodiment 3

[0049] A formaldehyde scavenger, consisting of the following components by weight percentage: activated carbon supported manganese oxide 8g, 2-imidazolidinone 4g, 1-(2-hydroxyethyl)-2-imidazolidinone 4g, diatomaceous earth supported titanium dioxide 8g, nano silver glue 0.1g, pure water 75.9g.

[0050] The preparation process is as follows:

[0051] (1) Take diatomite-loaded titanium dioxide and nano-silver colloid in the formula amount and add them to 35.9g of pure water, mix and stir for 30 minutes to obtain a mixed solution;

[0052] (2) Take the activated carbon-supported manganese oxide, 2-imidazolidinone, and 1-(2-hydroxyethyl)-2-imidazolidinone in the formula amount and add them to 40 g of pure water, stir evenly to obtain a mixed solution;

[0053] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 30 minutes to obtain the finished product.

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Abstract

The invention provides a diatomaceous-earth-supported formaldehyde scavenger. Contained ingredients of the diatomaceous-earth-supported formaldehyde scavenger are non-toxic and environment-friendly, and the diatomaceous-earth-supported formaldehyde scavenger can efficiently scavenge formaldehyde, is wide in application range and overcomes defects in the prior art. Specifically, the diatomaceous-earth-supported formaldehyde scavenger comprises ingredients in percentage by weight as follows: 5%-15% of activated-carbon-supported manganese oxide, 5%-10% of a formaldehyde trapping agent, 1%-8% of diatomaceous-earth-supported titanium dioxide, 0.1%-0.5% of nano-silver glue and the balance of pure water. The invention further provides a preparation method of the diatomaceous-earth-supported formaldehyde scavenger.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to a formaldehyde scavenger, which is mainly suitable for removing free formaldehyde in indoor air, artificial boards, wallpapers and textiles. Background technique [0002] Formaldehyde is one of the most serious indoor organic gas pollutants and has very high toxicity. In June 2004, a report published by the International Cancer Research Center (IARC) of the World Health Organization stated that high concentrations of formaldehyde can cause ear, nose and throat cancer and For other physical diseases, on the list of priority control 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, conference rooms and living rooms, etc., and the requirements for airtightness of the space are getting highe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/78B01D53/72B01J31/38A62D3/38A62D101/28
Inventor 石锋陈坚李灵卫
Owner ZHEJIANG BINGCHONG ENVIRONMENT PROTECTION TECH CO LTD
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