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Preparation method for indoor solid aldehyde removal agent

A technology of aldehyde elimination agent and solid, which is applied in the field of preparation of solid aldehyde elimination agent for indoor use, can solve problems such as limited effective components, indoor air pollution, secondary pollution of toxic substances, etc. good effect

Inactive Publication Date: 2015-04-08
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

[0026] 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 effectiveness fails, a large amount of free formaldehyde in the wood-based panel will still be released, causing indoor air pollution. The preparation method of aldehyde agent. The aldehyde remover is mainly used in indoor environment. It uses the combination of physical adsorption and chemical reaction to achieve the complete removal of formaldehyde. It can not only effectively remove a large amount of formaldehyde in the air for a long time, but also conver...

Embodiment 2

[0038] The formaldehyde elimination agent involved in this embodiment is made up of the following components: by mass and number ratio,

[0039] Adsorbent carrier: 1 part, attapulgite clay can be used;

[0040] Ethylene urea: 0.144 parts, ethylenediamine, urea, and water with a molar ratio of 1.5:1:0.5 can be added to the reactor, heated to melt and stirred to obtain ethylene urea paste, then add water to dissolve, And obtained after filtering and drying, the ethylene urea is in the form of white crystals;

[0041] 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.

[0042] In the present invention, both the ethylene urea 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...

Embodiment 3

[0049] The formaldehyde elimination agent involved in this embodiment is made up of the following components: by mass and number ratio,

[0050] Adsorbent carrier: 1 part, silica gel can be used;

[0051] Ethylene urea: 0.062 parts, ethylenediamine, urea, and water with a molar ratio of 1.5:1:0.5 can be added into the reactor, heated to melt and stirred to obtain an ethylene urea paste, then add water to dissolve, And obtained after filtering and drying, the ethylene urea is in the form of white crystals;

[0052] Reaction accelerator: 0.009 parts, calcium sulfate can be used.

[0053] In the present invention, both the ethylene urea 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 st...

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PUM

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Abstract

The invention discloses a preparation method for an indoor solid aldehyde removal agent. The aldehyde removal agent is mainly composed of an adsorbent carrier supporting ethyleneurea and a reaction promoter. By employing the mode of cooperative usage of ethyleneurea and the adsorbent promoter, formaldehyde in air is physically adsorbed by the adsorbent carrier, and also is subjected to a chemical reaction with ethyleneurea on the adsorbent carrier, and finally formaldehyde is converted into a nontoxic odorless substance, and thorough removal of formaldehyde is realized. The preparation method is extremely simple, concretely, the indoor solid aldehyde removal agent is prepared by employing ethyleneurea and the reaction promoter for preparing a reaction reagent solution, and then dipping the adsorbent carrier in the solution. The operation process is simple and rapid, the price is low, and the indoor solid aldehyde removal agent is especially suitable for household daily use.

Description

technical field [0001] The invention belongs to the field of formaldehyde removal, in particular to a method for preparing an indoor solid 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 free forma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/81B01D53/72A62D3/30A62D101/28
CPCB01J20/22A62D3/30A62D2101/28B01D53/72B01D53/81B01D2251/21B01D2251/402B01D2251/404B01D2251/608B01D2257/70B01J20/103B01J20/12B01J20/14B01J20/20
Inventor 梁宗贵
Owner CHENGDU SHUNFA DISINFECTANT & WASHING TECH
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