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Ultrahigh temperature heat treatment method of wood

A technology of warm heat treatment and wood, applied in wood treatment, wood treatment details, wood processing equipment, etc., can solve the problems of polluting wood surface, high treatment cost, waste oil purification and waste treatment, etc., and achieves excellent comprehensive performance , Good corrosion resistance and weather resistance, little strength drop

Active Publication Date: 2010-01-13
王益新 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has obvious disadvantages, that is, the treatment cost is high, the wood surface will be polluted, and there are problems in the purification and disposal of waste oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] An exemplary embodiment of the wood ultra-high temperature heat treatment method according to the present invention is given below.

[0028] The exemplary heat treatment process includes five stages: a preheating stage, a drying stage, a heating stage, a holding heat treatment stage, and a cooling stage.

[0029] First, the wood is put into a wood heat treatment equipment, which may include a wood treatment chamber, a heating device, a fan, a heating valve, a circulation valve, and a pressure and temperature monitoring device. Then perform the following process steps in sequence:

[0030] 1. Preheating stage

[0031] In the preheating phase, the wood is preheated. The temperature in the preheating stage can be raised to about 100°C to 150°C, for example. During the heating process of the preheating stage, the wood can be sprayed with water according to the situation.

[0032] 2. Drying stage

[0033] After the temperature is raised to a certain temperature in the p...

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Abstract

The invention provides a wood ultra-high temperature heat treatment method for improving wood dimensional stability and durability. The heating-up process of the treatment method includes: the first heating-up stage, using only water vapor as isolating oxygen protect media; the subsequent second heating-up stage, introducing nitrogen and using the mixture gas of nitrogen and water vapor as isolating oxygen protect media to reject degradation of wood main component cellulose then prevent the decline of wood strength. The products treated by the invention have good dimensional stability and durability, while strength decline is small; Moreover, the needed processing time of the treatment method is short, production efficiency is high and cost is low.

Description

technical field [0001] The invention relates to a wood treatment method, in particular to a treatment method for ultra-high temperature heat treatment of wood to improve its dimensional stability and durability. Background technique [0002] Wood is widely used in various purposes such as building structures, decorative materials, and furniture. There has been a lot of work on treatments that make the wood dimensionally stable and resistant to decay and weathering. In particular, due to the increasing scarcity of natural wood resources, the main source of wood has shifted to planted forests. The plantation forest has a short rotation period, a large proportion of juvenile wood in the wood, high content of hemicellulose and lignin, poor material quality, low density, poor dimensional stability and durability, so more treatment is needed to improve its quality. performance. [0003] Various methods have been tried to process wood. People use surface coating or veneering or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00
Inventor 方远进
Owner 王益新
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