Preparation process for alternatively drying wood by high temperature and room temperature combination

Abstract

The invention relates to a preparation process for alternatively drying wood by high temperature and room temperature combination, which comprises the following steps: well arranging wood to be dried, closing the door of a drying chamber, keeping the temperature in the drying chamber raising 8-13 DEG C per hour, and keeping the temperature for 3-4h when the dry ball temperature is 100 DEG C and the wet ball temperature is 95-100 DEG C; progressively raising the dry ball temperature to 110 DEG C while keeping the wet ball temperature at 100 DEG C; keeping the high temperature for 10-20h and then turning to room temperature to dry for 35-45h; in this way, alternatively and repeatedly drying by high temperature and room temperature combination for a plurality of rounds; and when the moisturecontent of the dried wood is reduced to 40%, 30% and 20%, respectively carrying out metaphase steam treatment. The invention not only can ensure drying quality of the wood, but also can shorten drying time and save cost, thus having good value in use.

Description

technical field [0001] The invention relates to the technical field of wood drying, in particular to a preparation process for wood high temperature and normal temperature polymerization alternate drying. Background technique [0002] Wood artificial drying refers to convective heating and drying of wood under the condition of artificially controlling the drying medium in the drying room, so that the moisture content of the dried wood is lower than the equilibrium moisture content of the wood corresponding to the local climate. Therefore, the produced wood products It can be used in other very dry or very humid areas without cracking, deformation and aliasing. The dimensional stability of wood dried at high temperature and used in very dry or very humid areas is greatly improved, compared with the dimensional stability of conventional steam drying (referring to the traditional room drying method with saturated steam as the heat source and humid air as the medium). Much bett...

AI Technical Summary

Problems solved by technology

However, due to the density and hardness of sandalwood wood, all of them are dried at high temperature (referring to room drying where the temperature of the drying medium (humid air or superheated steam) is higher than 100°C). poor quality