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Preparation method of adsorption reaction type formaldehyde remover

A formaldehyde remover, adsorption reaction technology, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of limited effective components, secondary pollution of toxic substances, indoor air pollution, etc., and achieve good results , strong adsorption, the effect of improving the elimination rate

Inactive Publication Date: 2015-04-01
CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In actual use, the volatilization time of free formaldehyde generally lasts for 10 to 15 years. In the above two formaldehyde scavengers, the active ingredients added are limited. Once the effectiveness fails, free formaldehyde in the wood-based panel will still be released in large quantities. come out, causing indoor air pollution. In addition, when the formaldehyde scavenger reacts incompletely with formaldehyde, it may also generate other toxic substances and cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Since the existing man-made boards use phenolic and urea-formaldehyde resins containing formaldehyde in the production process, while the furniture and home decoration building materials made of such boards are used by people, the residual and unreacted formaldehyde in the boards It will be gradually released to the surrounding environment, and the longest release period can reach 15 years. For this reason, formaldehyde has become the main body of indoor air pollution. The timeliness of the product is poor. Once the efficacy fails, a large amount of free formaldehyde in the wood-based panel will still be released, causing indoor air pollution. In order to solve the defects in the prior art, the present invention proposes an adsorption reaction type formaldehyde The preparation method of the scavenger, the formaldehyde scavenger is mainly used in the indoor environment, and the combination of physical adsorption and chemical reaction is used to achieve the complete remova...

Embodiment 2

[0037]The formaldehyde scavenger involved in this embodiment is made up of following components: by mass and number ratio,

[0038] Adsorbent carrier: 1 part, attapulgite clay can be used;

[0039] Reactant: 0.144 parts, ethylene urea can be selected;

[0040] Reaction accelerator: 0.01 part, a mixture of calcium sulfate and magnesium chloride can be used, wherein the mass ratio of calcium sulfate to magnesium chloride is 1:1.

[0041] In the present invention, both the reactant and the reaction accelerator are chemical components loaded on the adsorbent carrier, and the adsorbent carrier should be selected from a carrier with a large specific surface area and good adsorption performance, such as activated carbon and attapulgite clay mentioned in this embodiment. , silica gel or diatomaceous earth, in practical application, in addition to having a strong adsorption effect on formaldehyde, it also has a strong adsorption effect on toxic and odorous gases such as hydrogen sulfi...

Embodiment 3

[0048] The formaldehyde scavenger involved in this embodiment is made up of following components: by mass and number ratio,

[0049] Adsorbent carrier: 1 part, silica gel can be used;

[0050] Reactant: 0.062 parts, hydrazide compounds can be used;

[0051] Reaction accelerator: 0.009 parts, calcium sulfate can be used.

[0052] In the present invention, both the reactant and the reaction accelerator are chemical components loaded on the adsorbent carrier, and the adsorbent carrier should be selected from a carrier with a large specific surface area and good adsorption performance, such as activated carbon and attapulgite clay mentioned in this embodiment. , silica gel or diatomaceous earth, in practical application, in addition to having a strong adsorption effect on formaldehyde, it also has a strong adsorption effect on toxic and odorous gases such as hydrogen sulfide and ammonia in the air. works well. In actual use, the adsorbent carrier absorbs formaldehyde and other ...

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PUM

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Abstract

The invention discloses a preparation method of an adsorption reaction type formaldehyde remover. The formaldehyde remover mainly comprises an adsorbent carrier loaded with a reactant and a reaction promoter. According to the preparation method, a manner of match usage of the reactant and an adsorbent carrier is adopted, the adsorbent carrier performs physical adsorption on formaldehyde in the air and the formaldehyde chemically reacts with the reactant on the adsorbent carrier at the same time, and finally the formaldehyde is converted into a nontoxic and tasteless substance to realize complete removal of formaldehyde. The preparation process is very simple, a reactant solution is prepared by adopting the reactant and the reaction promoter, then the adsorbent carrier is soaked in the reactant solution to obtain the formaldehyde remover, and the operation process is simple and quick, is low in price and is particularly suitable for family daily use.

Description

technical field [0001] The invention belongs to the field of formaldehyde removal, and specifically relates to a preparation method of an adsorption reaction type formaldehyde remover. Background technique [0002] Formaldehyde has always been considered as the number one suspected carcinogen in indoor pollution, and it usually comes from decoration, decoration materials, furniture and coatings, etc., especially wood-based panels and the adhesives they use. Wood-based panels, plywood, particleboard, fiberboard, composite flooring, etc., they use phenolic and urea-formaldehyde resins containing formaldehyde in the production process. According to statistics, more than 90% of domestic wood-based panels are pressed with urea-formaldehyde glue, so of course there will be problems during application. Free formaldehyde, used in furniture manufacturing or other panel applications, often has a certain impact on the human body. In the actual application process, the reasons for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01J31/26B01D53/81B01D53/72B01D53/52B01D53/58
CPCB01J20/3214B01D53/52B01D53/58B01D53/72B01D53/81B01D2253/25B01D2257/304B01D2257/406B01D2257/7022B01J20/22B01J20/3225B01J20/3246B01J31/26
Inventor 梁宗贵
Owner CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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