Fluid Bed Drier
The Fluid Bed Drier is probably the most frequently used
dynamic drying process plant. The ability of the drier to impart optimum
heat transfer to powders yet without applying unacceptable shear to those
powders, makes the Fluid Bed Drier a favourite amongst process
plant specifiers and users. Powder Technology offer a Powder
Drier of the highest specification, yet at a price which sets us apart
from the competition.
A Fluid Bed Drier is particularly suited to the drying of free-flowing granular powders, providing as it does the optimum environment for the drying of powder. A Fluid Bed Dryer consists of a mass of powder, buoyed up out of permanent contact with each other by a flowing fluid (usually air). Turbulent activity within the mass of the powder as it dries promotes high mass and heat transfer rates, whilst ensuring that each powder particle is dried in a uniform manner.
The Powder Technology Fluid Bed Dryer consists of a supply fan, an inlet filter, a heat source which could be water, steam, or electricity. This hot air is fed through to the fluidization chamber via a perforated plate where the flow of hot air lifts the powder to be dried. Fines are usually lifted from the body of the drying powder and are caught in finger bag type sock filters. There is a pneumatic bag-shaker attached to the filter bag support frame which will routinely shake the bags to remove the build up of fines from these finger socks. Finally the filtered air is exhausted from the Powder drier via an exhaust fan and filter set.
Usually the Powder Dryer is loaded in a batch-wise manner as shown in these photographs, but other designs are available to load and un-load the Fluid Bed in a continuous non-contact and therefore contained manner.
Fluid Bed Dryer |
Fluid Bed Drier / Granulator With High Shear Mixer |
Fluid Bed Drier / Granulator With High Shear Mixer |