The Pressurized Steam Fluid Bed Dryer operates as a completely
closed drying system.
APPLICATION OF THE PRESSURIZED STEAM FLUID BED
The patented Niro pressurized steam fluid bed dryer system represents the
most cost effective and environmentally friendly drying system for handling
vast quantities of moist, fibrous materials produced in brewing, food and sugar
processing.
Other successful application of this fluid bed
include drying of wood based bio-fuels, while the use of pre-dried fuel
significantly improves boiler efficiencies.
Some applications of the
fluid bed include:
- Co-products from starch production
- Distiller's dried grain and substrate
- Wood based bio-fuels
MAIN CHARACTERISTICS OF STEAM DRYING
- A completely closed drying system
- No air pollution
- No vapour, dust or odour.
- Recovery of energy. More than 90% of the energy used in drying the product
is recovered as 2-4 bar steam
Improved product
- No product oxidation
- No flue gas contamination
- No product losses
OPERATING MODE
Superheated steam has long been recognized as a drying medium offering
important advantages in terms of energy consumption, environmentally friendly
processing and dried product quality for a range of selected materials. This
potential has been fully utilized by the latest designs of Niro pressurized
fluid bed dryers.
The pressurized steam circulating within the dryer is
formed by moisture evaporated from the feed material. Excess pressurized steam
is continuously discharged for use elsewhere in the factory to obtain maximum
heat recovery.
Niro A/S, Denmark, and BMA AG, Bruanschweig, Germany,
has entered into a licence agreement. BMA AG has been granted the exclusive
right to sell and supply Niro's Pressurized Steam Fluid Bed Dryer (PSFB) to
manufacturers in the sugar industry world-wide.
REFERENCES
Although the pressurized steam fluid bed is a relatively new technology,
Niro has installed several commercially sized steam fluid bed dryers, which
process sugar beet pulp, as well as wood based bio-fuels, and bio-sludge.