METHOD FOR RECOVERING HEAT FROM A DRYING DEVICE FOR BUILDING BOARDS

Abstract

Method to recover heat from a drying device for building boards, wherein the drying device comprises a plurality of drying zones, the method comprising: Removing an exhaust vapour mixture from at least one of the drying zones Transferring the exhaust vapour mixture with a temperature of 50°C to 200°C to a heat recovery column (1 ) Passing water and the exhaust vapour mixture through internals (6) of the heat recovery column (1) in a non-co-current flow, wherein the internals (6) are defined in terms of two or more theoretical stages.

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