Wood thermal modification treatment method

Abstract

The invention discloses a wood thermal modification treatment method. The method comprises the steps that wood to be subjected to thermal modification treatment is placed in a thermal treatment chamber, and the wood is heated; and when the temperature of the thermal treatment chamber rises to the set thermal modification temperature of the wood through heating, heating to the wood is stopped, and thermal modification of the wood can be conducted conveniently in the environment with the set modification temperature. According to the wood thermal modification treatment method, plant source biomass is used as fuel, the wood is heated in a modification mode through forward combustion type gasification combustion and reverse combustion type gasification combustion at the different stages of wood thermal modification, and the treatment cost can be obviously lowered. The uniformity of the temperature field of the thermal modification wood is guaranteed by adjusting the flowing amount and the flowing speed of thermal modification media, and the quality of the thermal modification wood is improved. Volatile organic compounds (VOC) generated from thermal modification are collected, and emission and thermal pollution of the VOC are reduced. Accordingly, energy is saved, resources are fully utilized, and environmental protection is further facilitated.

Description

technical field [0001] The invention relates to a method for thermal modification of wood, in particular to a method for providing heat source for thermal modification of wood by using plant-derived biomass such as agricultural and forestry wastes and residues as fuel for backburning, and belongs to the technical field of wood processing. Background technique [0002] With the implementation of the national natural forest protection project, the efficient and value-added utilization of artificial fast-growing forests has gradually become the focus of research and attention of domestic scientific research institutions and production enterprises. Over the years, people have tried to modify the fast-growing wood by chemical methods, and have achieved certain results. However, how to eliminate the harm to the human body and the environment during the preparation and use of chemically treated wood, and whether chemically treated wood products can be accepted by people, is a prior...

AI Technical Summary

Problems solved by technology

[0007] In the process of thermal modification of wood, due to the poor distribution uniformity and poor fluidity of the heat medium in the heat treatment chamber, the heat treatment temperature of the wood in different parts of the heat treatment chamber is not uniform, resulting in uneven wood color and different treatment effects. Different properties, such as uneven mechanical properties and dimensional stability, affect the wood material

resulting in the quality of heat-treated wood

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