INSTALLATION AND METHOD FOR DRYING AND HEAT TREATMENT OF WOOD Russian patent published in 2022 - IPC F26B7/00 F26B5/04 F26B9/06 

FIELD: wood treatment.

SUBSTANCE: invention relates to devices for drying and heat treatment of wood, in particular lumber, and can be used for heat treatment of various types of wood in the woodworking industry to improve its physical, chemical and consumer characteristics. The method for drying and heat treatment of wood includes heating the wood stack to a temperature of 50-95°C at a pressure of at least 0.05 MPa with the formation of a vapor-gas mixture as a result of evaporation of excess moisture from the wood, drying until the specified moisture content of the wood stack is reached in a vacuum from -0.008 MPa to -0.005 MPa with its active ventilation in a closed circuit with a vapor-gas mixture at an increased partial pressure and forced circulation of the coolant, vacuum release and cooling of the wood stack by means of increased coolant supply. The installation for drying and heat treatment of wood includes an autoclave chamber connected to a scrubber, heating registers are located in the lower part of the chamber along its walls, a nozzle device connected to a high-pressure fan is introduced in the central lower part of the chamber, a suction device is introduced in the upper central part of the chamber, connected through a bypass external air duct with a high-pressure fan, a condensate collector is installed in the upper part of the chamber, which ensures circulation of the coolant, collection and removal of condensate.

EFFECT: reducing the time of drying and heat treatment of a stack of wood.

12 cl, 4 dwg