Abstract: The spray dryer comprises a spray drying chamber having a substantially cylindrical top section, a conical wall and a narrowed lower section. In the top section, atomizing means is provided. One or more cameras are associated with the drying chamber in order to monitor the process. At least one of the cameras is an infrared camera adapted for measuring the temperature within a predefined area.

Abstract: The spray dryer comprises a spray drying chamber having a substantially cylindrical top section, a conical wall and a narrowed lower section. In the top section, atomizing means is provided. One or more cameras are associated with the drying chamber in order to monitor the process. At least one of the cameras is an infrared camera adapted for measuring the temperature within a predefined area.

Abstract: The invention relates to an apparatus for drying a liquid predominately containing solid matter of carbohydrates to a non-sticky powder. The apparatus comprises a spray drying chamber (5) in the upper part of which a spraying element (4) capable of atomizing liquid predominately containing solid matter of carbohydrates to droplets is positioned, means (6) for supplying a drying gas to the atomized droplets for partially drying thereof to moist particles, and a residence device (9) for post-crystallisation of the moist particles received from the drying chamber to a non-sticky powder. The apparatus further comprises a filter element (7) arranged internally in the spraying chamber, and means (16) for withdrawing the spent drying gas through the filter element. The apparatus is suitable for treating liquids with a high content of carbohydrates such as whey and whey permeate. Also disclosed is a process for producing non-sticky powders.