Simulation of technological process of aerosol wood impregnation

Voronezh State University of Forestry and Technologies named after G.F. Morozov, 8, Timiryazeva str., Voronezh, 394087, Russian Federation

^* Corresponding author: drevstal@mail.ru

Published online: 17 February 2025

Abstract

The process of impregnation of timber bars using a dispersed antifriction compound is studied. An air flow, containing inclusions of impregnating liquid, is formed in a special installation. The flow moves mainly in the direction of the fibers. Deposition of liquid particles on the surface of the porous system of wood takes place during this process. A description of a pilot installation performing aerosol impregnation process is presented. Technical conditions of its work to create the optimal content of Biol grease in hardwood specimens are specified. A mathematical model for the non-stationary adsorption of particles of aerodisperse mixture on the surface of a porous wood matrix has been developed, based on the mechanics of multiphase systems. The analysis of the mathematical model for one-dimensional approximation is carried out. It is shown that the calculated averaged values of the volume concentration of precipitated liquid component for different values of wood initial porosity are in satisfactory agreement with the experimental data. The formulated mathematical models enable to predict the distribution dynamics of parameters for aerosol wood impregnation process along the specimen length depending on the operating characteristics and average value of initial wood porosity.