The chamber of a vertical (tower) dryer has the form of a tall cylinder with a cone-shaped bottom.
Spray nozzles may be located at the top (co-current flow) or bottom (counter-current flow or mixed flow) of the chamber.
BETE Twist & Dry™ nozzles are commonly used in vertical dryers.
Inlets for the drying air may be located at the top, bottom or side of the chamber.
Vertical spray dryers are usually large and the residence time of sprayed particles is relatively long, allowing the use of higher flow nozzles such as the TD, which produce relatively large particles.
Manufacturers of vertical spray dryers include Stork, Niro and APV Anhydro.