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Wood micro charring method

A wood and carbonization technology, which is applied in wood treatment, wood processing equipment, wood treatment details, etc., can solve the problems of high safety requirements, poor carbonization uniformity, and inability to solve wood corrosion and insect prevention.

Inactive Publication Date: 2006-08-09
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
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Problems solved by technology

This method has high safety requirements for equipment and operation, and chemical impregnation has a great adverse impact on the environment.
CN02118274.4 discloses the patented technology of "a process of roasting and decaling on the surface of wood and its products". It is a technical scheme of directly spraying and roasting the wood surface with an open flame to carry out micro-carbonization. This method can only be carried out on the extreme surface, and the carbonization The uniformity is poor, and the problems of wood corrosion and insect prevention cannot be solved.

Method used

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Embodiment Construction

[0006] The present invention will be described in further detail below in conjunction with embodiment: so-called " micro charring " refers to the degree of dehydration of wood, and the equilibrium moisture content of its wood is almost 1 / 2 of general drying. First cut the wood to be processed (logs or boards, etc.) as needed, and put them into the carbonization kiln for ventilated stacking. They can be stacked layer by layer in the shape of "well" or "feng", so as to facilitate stacking and facilitate ventilation. After stacking, close the kiln door, turn on the heat source, and gradually raise the temperature from the kiln to about 80°C. After the wood is dry, immediately raise the temperature to above 130°C, or even directly rise to 200°C. Sampling and visually inspect the degree of wood charring (color and other appearance) Or weigh, when the weight loss of the wood reaches 0.3-10%, after carbonization, turn off the heat source, and cool naturally in the kiln to below 50°C, ...

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Abstract

The invention relates to a wood tiny charring method that the feature is sending the wood into charring kiln, taking ventilating stacking, closing the kiln gate, heating the temperature to about 80 degree centigrade, fast heating to 130 degree centigrade after the wood dry, keeping for a while until the tiny charring qualified, shutting down the heating source, cooling to below 50 degree centigrade, storing the wood. The product has large range for application. It has the advantages of moth proof, antisepsis, mould proof, little internal stress, good adaptability to kinds of weather, etc.

Description

technical field [0001] The invention relates to a wood heat treatment method, which is a treatment method for slightly carbonizing wood. Background technique [0002] Using dry but uncarbonized wood as raw material has been used in various wood processing industries until now. Wood raw materials are easy to rot, mildew, insects, and easy to deform, poor moisture resistance, and unstable color. If the wood is thoroughly carbonized and burned into charcoal, although the above-mentioned shortcomings can be overcome, the mechanical strength of the wood will be completely lost, so it cannot be used as a raw material for the wood processing industry. Seeking a compromise between the above two, each taking its own strengths, and micro-carbonizing wood has gradually attracted the attention of people in the industry. "Forest Industry" 1996, Volume 23, Issue 6, published the article "Research on New Technology of Bamboo Carbonization" by Mr. Zhang Xiaodong and Mr. Zhu Yixin. The tre...

Claims

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Application Information

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IPC IPC(8): B27K5/00F26B3/04F26B9/02
Inventor 俞友明马灵飞傅深渊钱俊
Owner ZHEJIANG FORESTRY UNIVERSITY
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