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Rapid wood board drying method

A fast drying, wood technology, applied in the direction of drying solid materials, method combination to dry solid materials, drying, etc., can solve the problem of slow drying rate, achieve stable physical properties, reduce wood cracking and deformation, and ensure consistency. Effect

Inactive Publication Date: 2017-05-10
SHIFANG MIDEE WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For wood drying, the temperature directly determines the drying speed. The higher the drying temperature, the faster the drying speed, and vice versa.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for rapid drying of wood boards is characterized in that it comprises the following steps:

[0014] Step 1: Saw the wood into 3cm thick boards;

[0015] Step 2: Compress the board so that the compression rate of the wood is 30%, and the compression speed is 0.3mm / min;

[0016] Step 3: Put the compressed board into the vacuum tank, first heat the board, start spraying steam on the board when it is heated to 50°C, and keep the board warm for 3 hours when the temperature reaches 90°C; start to heat the board Carry out drying treatment, and dehumidify while heating the vacuum tank;

[0017] Step 4: After the dehumidification is completed, take out the board and place it in a ventilated place for 1 day.

Embodiment 2

[0019] A method for fast drying of wood boards, comprising the following steps:

[0020] Step 1: Saw the wood into 3cm thick boards;

[0021] Step 2: Compress the board so that the compression rate of the wood is 20%, and the compression speed is 0.05mm / min;

[0022] Step 3: Put the compressed board into the vacuum tank, first heat the board, start spraying steam on the board when it is heated to 55°C, and keep the board warm for 4 hours when the temperature reaches 95°C; start to heat the board Carry out drying treatment, and dehumidify while heating the vacuum tank;

[0023] Step 4: After the dehumidification is completed, take out the board and place it in a ventilated place for 1.5 days.

Embodiment 3

[0025] A method for fast drying of wood boards, comprising the following steps:

[0026] Step 1: Saw the wood into 5cm thick boards;

[0027] Step 2: Compress the board so that the compression rate of the wood is 40%, and the compression speed is 1mm / min;

[0028] Step 3: Put the compressed board into the vacuum tank, first heat the board, start spraying steam on the board when it is heated to 60°C, and keep the board warm for 5 hours when the temperature reaches 100°C; start to heat the board Carry out drying treatment, and dehumidify while heating the vacuum tank;

[0029] Step 4: After the dehumidification is completed, take out the board and place it in a ventilated place for 2 days.

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PUM

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Abstract

The invention discloses a rapid wood board drying method. The rapid wood board drying method comprises the following steps that wood is sawed into a board; the board is compressed; the compressed board is put into a vacuum pot, heated, subjected to steam spraying treatment, and subjected to heat preservation when being heated to a certain temperature; the board is dried, specifically, heating and dehumidifying are conducted at the same time in the vacuum pot; and the board is taken out and placed at a ventilated place after dehumidifying is completed. The rapid wood board drying method has the beneficial effects that vacuum drying is adopted, the consistency of the dryness of the overall wood is ensured, the component characteristic in the wood is made simplex, and therefore the wood is stable in physical characteristic and not prone to deformation; and the drying defects of wood cracking and deforming are overcome, the quality of the dried wood is improved, and the drying time is greatly shortened.

Description

technical field [0001] The invention relates to a method for drying wood, in particular to a method for quickly drying wood boards. Background technique [0002] Wood drying is one of the important links in the process of wood product processing. Improving the drying rate of wood and shortening the drying cycle are important ways to reduce drying costs and save energy. In the traditional wood drying process, in order to avoid drying defects, when the moisture content of the wood is relatively high, a lower temperature is generally used for drying treatment. As the moisture content decreases, the drying temperature gradually increases, making the entire drying process The temperature in is lower. For wood drying, the temperature directly determines the speed of the drying rate, the higher the drying temperature, the faster the drying rate, and vice versa, the slower drying rate. In order to improve the drying rate, special drying methods such as vacuum drying are used in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00
Inventor 曾宇
Owner SHIFANG MIDEE WOOD IND
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