Introduction to Fluidized Bed Technology
Fluidized bed technology is widely used for drying and cooling bulk materials due to its efficient heat and mass transfer capabilities. Traditional methods face limitations when using fixed temperature heat sources like saturated steam or thermal oil, especially with heat-sensitive products. The integration of tubular heat exchangers within the fluidized bed provides a continuous heat supply, enhancing drying performance.

Product Benefits
By incorporating heating coils, up to 80% of the necessary thermal energy is supplied indirectly, reducing the need for hot air and minimizing thermal demand, electrical consumption, and exhaust air heat losses. This results in a more efficient drying process with reduced dryer size and smaller air inlet and exhaust components.

Optimized Efficiency
The process requires less drying air due to the additional heat exchanger surfaces, allowing for higher exhaust air enthalpy and smaller air volumes. This method avoids the need for significantly higher air inlet temperatures, which may not be feasible.

Integration of Heating and Cooling Surfaces
Heating or cooling surfaces integrated into the fluidized bed optimize heat input or discharge. Heat transfer sources include steam, hot water, or thermal oil, while cooling is achieved with cold water or brine. Allgaier offers customized solutions tailored to specific application demands.

Key Technology Points
Allgaier provides variable process engineering with options for pure drying, drying with cooling zones, single or multi-stage plants, and heat recovery from exhaust air. The technology supports various fuels and heat sources, pressure relief, explosion protection, and integration into process control systems.

Material and Design Features
Fluid bed dryers can be constructed from various materials to meet corrosive, thermal, or mechanical demands. They are suitable for tough environments, effectively dry products with high surface moisture, and include features for dust discharge and coarse material handling.

Applications
Allgaier fluidized bed technology is applicable in industries such as foodstuffs, chemicals, environmental engineering, agriculture, minerals, metallurgy, and animal feeds. Specific applications include drying and cooling of common salt, potato granulate, sugar, soda, sodium sulphate, and more.

Testing and Development
Allgaier invites clients to conduct drying trials at their test center, offering both batch-fed and continuous tests. This allows for safe scale-up and product development assistance.

Contact Information
Allgaier Process Technology GmbH
Ulmer Straße 45, 73066 Uhingen, Germany
Phone: +49 7161 654 683-0
Email: [email protected]
Website: www.allgaier-pt.com