Drying plant and method for drying wood

F - Mech Eng,Light,Heat,Weapons – 26 – B

Patent

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Details

F26B 9/06 (2006.01) F26B 3/04 (2006.01) F26B 21/00 (2006.01) F26B 21/06 (2006.01) F26B 23/02 (2006.01) F26B 25/00 (2006.01)

Patent

CA 2388584

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 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 inside the flue (9), and is used as a drying agent. The hot drying agent is supplied from the cavity (6) in the bottom and circulates through distribution channels in the lower part of the drying chamber (1) where it passes through the material which is to be dried and rises in the top portion of the internal open space of the drying chamber (1). From that point, one part of the drying agent is fed into a closed circuit in the flue (9) of the furnace and is heated therein, and the other part of said drying agent is directed into a condensation cleaning unit (11) where it is mixed with furnace gases and purifies said gases by condensation.

L'invention relève des équipements de séchage et peut s'utiliser dans les industries du bois, de préparation du bois, etc., lors de l'utilisation des paramètres et modes nécessaires pour le séchage de matières telles que le bois. L'invention permet d'assurer, dans le cadre d'un processus de séchage, un degré plus élevé de protection de l'environnement, un plus grand rendement et une économie d'énergie plus importante, et ce grâce à la conception suivante de l'installation: la chambre de séchage (1) qui accueille la matière à sécher comprend un fond (4) avec deux cavités (5, 6); on injecte dans l'une de ces cavités (5) des produits de combustion chauds provenant du carneau (9) du four dans lequel on brûle des déchets de bois; on injecte dans l'autre cavité (6) l'air chaud chauffé dans les tuyaux disposés dans le carneau (9), ledit air étant utilisé comme agent de séchage. L'agent de séchage chaud est fourni depuis la cavité de fond (6), à travers des canaux de distribution, dans la partie inférieure de la chambre de séchage (1) dans laquelle il passe à travers la matière à sécher et monte dans la partie supérieure de l'espace interne libre de la chambre de séchage (1). Depuis là, une partie de l'agent de séchage utilisé est alimentée en circuit clos dans le carneau (9) du four où elle est réchauffée, et une partie dudit agent de séchage est dirigée dans l'unité de purification par condensation (11) où elle se mélange avec les gaz du four et les purifie par condensation.

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