Carbonization heat treatment process for wood

Abstract

Disclosed is carbonization heat treatment process for wood. The technical scheme includes that the wood is loaded in a carbonization kiln, saturated steam is used as a protector, a fain is used for realizing airflow circulation, the inside of the kiln is slowly heated by a hot oil or electric heating system, a high-temperature environment is formed, pressure generated in the kiln is released by a pressure release system so as to form a constant pressure environment, generated flue gas is treated by a water film dust removal system to meet requirements of environmental protection, and steps of the process include a temperature rising and drying stage, a carbonization temperature rising stage, a carbonization stage and a cooling stage. Carbonization colors of the inside of the carbonized wood and carbonization colors of the surface of the carbonized wood are even and uniform, color difference of the surface of the carbonized wood is avoided, the surface of the carbonized wood is bright, and SB / T10508-2008 standards are met. In addition, an integral carbonization process is easy to control, and the carbonization heat treatment process is applicable to wood of various trees. Besides, the carbonization heat treatment process has high technical content, and is low in production cost and favorable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of wood heat treatment, in particular to a wood carbonization heat treatment process for producing deeply carbonized wood. Background technique [0002] As we all know, carbonized wood is wood that undergoes short-term pyrolysis modification treatment at high temperature in order to improve the dimensional stability and durability of wood in an environment that blocks oxidation and hydrolysis reactions. [0003] According to the degree of carbonization, it can be divided into surface carbonized wood and deep carbonized wood. the [0004] The surface carbonized wood is grilled with an oxygen torch, so that the surface of the wood has a very thin carbonized layer. The change of the properties of the wood can be compared to the paint of the wood, but it can highlight the uneven wood grain on the surface and produce a three-dimensional effect. Applications focus on handicrafts, decoration materials and aquari...

AI Technical Summary

Problems solved by technology

For example, the kiln-type wood carbonization treatment process in the "wood hot-press carbonization strengthening method" of the notification number CN101214675B is to use a hot press as a wood carbonization equipment, and the wood is carried out hot-press carbonization in a compressed state. High temperature is generated to make wood carbonization. It is difficult to control the process temperature, time, wood carbonization depth and wood utilization rate, and the produced wood is prone to false carbonization.

At the same time, because the wood directly enters the carbonization temperature from normal temperature, the smoke generated during carbonization in the carbonization kiln cannot be recovered and causes environmental pollution.