A vertical flash tube dryer, and method for cooling product deposits in such a flash dryer

摘要

The vertical flash tube dryer (1) defines an axial direction (a) and comprises a drying chamber (2) having a lower section (3) and an upper section (4). A feed inlet (5) for product to be dried and an inlet (6) for axial introduction of a drying gas are provided in the lower section. A cooling arrangement (8) for cooling a wall of the drying chamber is provided, and the cooling arrangement (8) consists of a gas cooling arrangement including an inlet (81) for cooling gas located in the wall of the lower section (3) at a position between the inlet (6) for drying gas and the feed inlet (5) as seen in the axial direction.