Question

Which dryer is used to dry the material almost instantaneously in a turbulent stream of hot air?

(a) Fluidized bed dryer

(b) Drum dryer

(c) Cabinet tray dryer

(d) Pneumatic dryer

I had been asked this question in an interview for internship.

I would like to ask this question from Drying Equipments in section Drying of Food Processing Unit Operations

Answer 1

Correct option is (d) Pneumatic dryer

The best I can explain: In pneumatic dryer, the material is dried almost instantaneously in a turbulent stream of hot air. This can also acts as conveyor system. It is applicable to powdered, granular, and flaky materials.