Abstract: The invention relates to drying equipment and can be used in wood and wood treatment industries, etc., whenever parameters and procedures necessary to dry materials such as wood are used. The invention allows the drying process to achieve a higher degree of environmental protection, a larger product output and power saving features on the account of the following design of the plant: the drying chamber (1) which contains the material to be dried includes a bottom (4) which has two cavities (5,6); hot combustion products are injected into one of these cavities (5) from the flue pipe (9) of the furnace (3) which is used to burn wood waste; hot air is supplied into the other cavity (6), whereby said air is heated in pipes which are located in the flue (9), and is used as a drying agent.

Abstract: The furnace is intended for burning solid fuel (mainly fire-wood) in continuous mode of operation, with significant amount of heat released in the form of hot combustion products usable in wood-drying installations, for house heating, destroying of refuse, etc. The invention allows simplifying the design of the furnace, features high efficiency of fuel burning and high power density, and improves reliability and serviceability. The furnace includes the shaft loading hopper (1), the combustion chamber (2) located under the loading hopper (1), and the expansion chamber (3) located behind the combustion chamber (2) and provided with the forced ventilation (5). The atmospheric air, heated to the temperature of combustion products in the expansion chamber (3), is supplied to the combustion chamber (2).