Method and system for drying a water containing substance

Details Method and system for drying a water containing substance Method and system for drying a water containing substance

F - Mech Eng,Light,Heat,Weapons

26

B

F26B 3/06 (2006.01) C02F 1/08 (2006.01) C05F 3/06 (2006.01)

Patent

CA 2668365

A method and system for drying a water containing substance, such as manure, into a single dry product, wherein an airflow is conditioned, in order for the airflow to be able to take up moisture, and wherein a substance / airflow interface is provided, in order to allow the air to take up moisture from the substance at the interface to thereby dry the substance, wherein the method comprises the steps of heating the airflow, separating the substance in a relatively solid fraction and a liquid, using the relatively solid fraction to create a first, static substance / airflow interface, using the liquid fraction to create a second, dynamic substance / airflow interface, guiding the airflow to the first substance / airflow interface to dry the relatively solid fraction of the water containing substance, and thereafter guiding the airflow to the second substance / airflow interface to pre-dry the liquid fraction of the water containing substance, mixing the pre-dried liquid fraction with the water containing substance.

La présente invention concerne un procédé et un système de séchage d'une substance contenant de l'eau, telle que du fumier, en un produit sec unique, selon lesquels un courant d'air est conditionné, de sorte que le courant d'air puisse enlever l'humidité, et selon lesquels une interface substance/courant d'air est fournie, afin de permettre à l'air d'enlever l'humidité de la substance à l'interface pour ainsi sécher la substance. Ledit procédé comprend les étapes de chauffage du courant d'air, de séparation de la substance en une fraction relativement solide et en un liquide, d'utilisation de la fraction relativement solide pour créer une première interface substance/courant d'air statique, d'utilisation de la fraction liquide pour créer une seconde interface substance/courant d'air dynamique, de guidage du courant d'air vers la première interface substance/courant d'air afin de sécher la fraction relativement solide de la substance contenant de l'eau, et par la suite de guidage du courant d'air vers la seconde interface substance/courant d'air afin de pré-sécher la fraction liquide de la substance contenant de l'eau, et de mélange de la fraction liquide pré-séchée avec la substance contenant de l'eau.

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