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Method of eliminate formaldehyde molecule in Wood-based Panel

A wood-based panel and molecular technology, applied in manufacturing tools, other plywood/plywood utensils, wood processing utensils, etc., can solve the problems of unstable processing quality, large impact on the production environment, secondary pollution, etc., to achieve stable and reliable quality, saving The effect of site and operation is simple and safe

Inactive Publication Date: 2008-06-18
李运生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is not sealed, so the treatment quality is unstable, it has a great impact on the production environment, and it is easy to cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of treatment solution

[0018] The wood-based panels, oxalic acid, hydrochloric acid, and ammonia are in the following proportions: every 10m 3 Wood-based panels are added with 100mg of oxalic acid, 100mg of hydrochloric acid and 25kg-27kg of liquid ammonia.

[0019] The preparation method is carried out according to the following steps:

[0020] Put the artificial board into the reaction chamber; put the hydrochloric acid and oxalic acid into the glass container, put the glass container into the reaction chamber, close the reaction chamber door, and open the circulation fan;

[0021] Turn on the water pump, discharge the warm water in the pool to the ammonia cylinder, open the valve of the ammonia cylinder, the ammonia gas will pass through the pipeline, and then enter the reaction chamber through the circulation exhaust fan, and react for 40 minutes; open the exhaust valve, and discharge the ammonia gas from the reaction chamber. After 20 minutes, the re...

Embodiment 2

[0023] Preparation of treatment solution

[0024] The wood-based panels, oxalic acid, hydrochloric acid, and ammonia are in the following proportions: every 10m 3 Wood-based panels are added with 100mg of oxalic acid, 100mg of hydrochloric acid and 25kg-27kg of liquid ammonia.

[0025] The preparation method is carried out according to the following steps:

[0026] Put the artificial board into the reaction chamber; put the hydrochloric acid and oxalic acid into the glass container, put the glass container into the reaction chamber, close the reaction chamber door, and open the circulation fan;

[0027] Turn on the water pump, discharge the warm water in the pool to the ammonia cylinder, open the valve of the ammonia cylinder, the ammonia gas will pass through the pipeline, and then enter the reaction chamber through the circulation exhaust fan, and react for 50 minutes; open the exhaust valve, and discharge the ammonia gas from the reaction chamber. After 25 minutes, the re...

Embodiment 3

[0029] Preparation of treatment solution

[0030] The wood-based panels, oxalic acid, hydrochloric acid, and ammonia are in the following proportions: every 12m 3 Wood-based panels are added with 100mg of oxalic acid, 100mg of hydrochloric acid and 25kg-27kg of liquid ammonia.

[0031] The preparation method is carried out according to the following steps:

[0032] Put the artificial board into the reaction chamber; put the hydrochloric acid and oxalic acid into the glass container, put the glass container into the reaction chamber, close the reaction chamber door, and open the circulation fan;

[0033] Turn on the water pump, discharge the warm water in the pool to the ammonia cylinder, open the valve of the ammonia cylinder, the ammonia gas will pass through the pipeline, and then enter the reaction chamber through the circulation exhaust fan, and react for 60 minutes; open the exhaust valve, and discharge the ammonia gas from the reaction chamber. After 30 minutes, the re...

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PUM

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Abstract

The invention relates to a method for eliminating formaldehyde molecules in wood-based panel. The wood-based panel is put into a reaction chamber first, and then hydrochloric acid and oxalic acid in a weight proportion of 1:1 is put into a glass container which is also put into the reaction chamber. The door of the reaction chamber is closed, a cycling exhaust fan is opened, and then a water pump is opened to exhaust the warm water to an ammonia gas bottle; a valve of the ammonia gas bottle is opened so that the ammonia gas is input into the reaction chamber passing through a pipe and the cycling exhaust fan to be reacted for 20 to 60 minutes; at last an exhaust valve is opened to exhaust the gas for 20 to 30 minutes, and then the reaction chamber is opened. The whole process is finished. The invention has the advantages of good processing effect, stable and reliable quality, easy and safe operation and saving the space.

Description

technical field [0001] The invention relates to an environmentally friendly treatment method for building materials, in particular to a method for eliminating formaldehyde molecules in wood-based panels. technical background [0002] Most of the existing wood-based panels have high free formaldehyde content, generally around 20mg / 100g, which seriously endangers human health. In order to achieve the purpose of environmental protection, some methods for controlling formaldehyde pollution have been proposed at present. Among the various methods for reducing the free formaldehyde content in wood-based panels, the most commonly used method is atmospheric fumigation. The disadvantage of this method is that it is not sealed, so the treatment quality is unstable, it has a great impact on the production environment, and it is easy to cause secondary pollution. Contents of the invention [0003] The present invention overcomes the above disadvantages, and proposes a method for eli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N7/00B27D5/00
Inventor 李运生
Owner 李运生
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