Method for recovering heat from a drying device for building boards

Abstract

A method for recovering heat from a drying device for building boards, the drying device comprising a plurality of drying zones, the method comprising: removing an exhaust steam mixture from at least one of the drying zones; transferring the exhaust steam mixture at a temperature of 50°C to 200°C to a heat recovery column (1); passing water and the exhaust steam mixture through the interior (6) of the heat recovery column (1) in a non-countercurrent flow, the interior (6) being defined with respect to two or more theoretical stages; A method comprising the above steps.

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