VIBRATORY FLUID BED DRYER SYSTEM

Vibratory fluidized bed dryer (vfbd) is a type of fluidized bed where the mechanical vibrations enhance the performance of fluidization process. Its vibration properties proves to be more efficient in dealing with fine particles which appears to be very difficult to achieve with normal fluidized bed
many of the industrial material needed physical movement during. This has been overcome by means of vibrators directly mounted on the body of the fluid bed dryer.
The vibration level of is dependent on the behavior and nature of the material to be dried, the amplitude can be adjusted by adjusting the unbalanced weight of the vibrators.
The drier is mounted on the four pillars with springs in between pillar and the fluid bed drier to avoid vibration transfer from fluid bed drier to structure. This gives a much lower product residence time per unit bed area than non-vibrating beds which can have powder layers up to 1500 mm. It can be operated as a separate drying or cooling unit.
Some of the advantages of vibratory fluidized beds include –
continuous drying throughout the unit
handle products with a wide range of particle size and shape.
Minimal fluidization velocity and pressure drop due to the vibration energy being transferred along the bed.
Increase efficiency of gas to solid contact.
Mechanical vibration enhances homogeneity and stability of fluidized bed layers
easier to control the residence time distribution of processed material by manipulating the intensity of amplitude and frequency of variation
range of applications –
vibratory fluidized beds are mainly used in several industries such as pharmaceutical
agricultural
catalyst
plastics
minerals
food processes
typical applications for vibratory fluidized beds are drying products in the form of grains and crystals, cooling the dried products, agglomeration and granulation of coarse particles, and sterilizing.