Preparation method of household formaldehyde remover

A formaldehyde scavenger and household technology, applied in the direction of separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as limited active ingredients, secondary pollution of toxic substances, indoor air pollution, etc., and achieve good results. Strong adsorption effect, 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, and once the effectiveness fails, a large amount of free formaldehyde in the wood-based panel will still be released, causing indoor air pollution, etc. In order to solve the defects in the prior art, the present invention proposes a household formaldehyde remover The preparation method of the formaldehyde remover is mainly aimed at the indoor environment. It uses the combination of physical adsorption and chemical reaction to achieve the complete removal of formaldeh...

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] Hydrazide compound: 0.144 parts, which can be prepared by mixing formamide solution and ammonium carbonate solution with a molar ratio of 1:1 and then drying;

[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 hydrazide compound and the reaction accelerator are chemical components loaded on the adsorbent carrier, and the adsorbent carrier should use a carrier with a large specific surface area and good adsorption performance, such as activated carbon, concave-convex One of stick clay, silica gel or diatomaceous earth, in practical application, in addition to having a strong adsorption effect on formaldehyde, it al...

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] Hydrazide compound: 0.062 parts, which can be prepared by mixing formamide solution and ammonium carbonate solution with a molar ratio of 1:1 and then drying;

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

[0052] In the present invention, both the hydrazide compound and the reaction accelerator are chemical components loaded on the adsorbent carrier, and the adsorbent carrier should use a carrier with a large specific surface area and good adsorption performance, such as activated carbon, concave-convex One of stick clay, 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. ...

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PUM

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Abstract

The invention discloses a preparation method of a household formaldehyde remover. The formaldehyde remover is mainly composed of an adsorbent carrier which carries hydrazide compounds and a reaction promoter. By compounding the hydrazide compounds and adsorbent carrier, the adsorbent carrier performs physical adsorption on the formaldehyde in air, and the formaldehyde chemically reacts with the hydrazide compounds on the adsorbent carrier, so that the formaldehyde is finally converted into the nontoxic smellless substance, thereby thoroughly removing the formaldehyde. The preparation process is very simple: the hydrazide compounds and reaction promoter are prepared into the reactant solution, and the reactant solution is immersed in the adsorbent carrier. The operational process is simple and cheap, and thus, is especially suitable for household daily use.

Description

technical field [0001] The invention belongs to the field of formaldehyde removal, and specifically relates to a preparation method of a household 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 generation of fr...

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
CPCB01J20/22B01D53/52B01D53/58B01D53/72B01D53/81B01D2257/304B01D2257/406B01D2257/70B01J20/30B01J21/08B01J21/10B01J21/16B01J21/18B01J23/02B01J2220/4812
Inventor 梁宗贵
Owner CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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