The TS SPN PULSE fluid bed drying technology, developed by S.I.E. S.r.l., represents the evolution of the turbine dryer patented throughout Europe by the Bianchi Engineers. Today, this technology is further enhanced through the collaboration with Claudio Bianchi Janetti, Managing Director of S.I.E. and custodian of the patents and know-how developed over decades of research and engineering in the field of industrial drying technologies.The system is designed for drying granular, crystalline and powdered products by means of a controlled fluidization process that ensures high drying uniformity, reduced energy consumption, maximum operational reliability and precise control of the process parameters.
The operating principle is based on the introduction of a process gas (air or nitrogen) into the drying chamber with a predominantly tangential flow component. This configuration generates a controlled vortex motion that keeps the product continuously fluidized, promoting constant particle mixing and highly efficient heat and mass transfer.
During the drying process, the material undergoes a progressive reduction in moisture content, resulting in a corresponding change in its bulk density. As drying progresses, the lighter particles migrate towards the upper layers of the fluidized bed, while the wetter and heavier material remains in the areas where the drying intensity is greatest. This mechanism ensures uniform drying while minimizing the risk of product overheating, thermal degradation and agglomeration.
Fine particles entrained by the process gas are captured by the upper bag filter system, equipped with an automatic pulse-jet cleaning system, and subsequently recovered without product losses.
The product residence time inside the drying chamber is controlled by means of a side discharge equipped with a variable-speed rotary valve, allowing optimization of the drying process according to the product characteristics and the required final moisture content. The unit can operate in either continuous or batch mode.
Caratteristiche costruttive:
- Compact design with a reduced footprint.
- Drying chamber engineered to ensure uniform process gas distribution.
- Integrated bag filter system positioned directly above the drying chamber, equipped with automatic pulse-jet cleaning.
- High-efficiency inlet air filtration system (up to 99.95% filtration efficiency).
- Continuous adjustment of product residence time through a motorized rotary valve.
- Available in carbon steel, AISI 304, AISI 310, AISI 316 or titanium construction.
- Hot air or nitrogen heating system sized according to the specific process requirements.
- Closed-loop configuration with inert nitrogen atmosphere for products containing organic solvents.
- Solvent recovery systems using shell-and-tube condensers and/or scrubbers.
- Automatic control of the main process parameters by means of a Siemens PLC with dedicated S.I.E. software.
- HMI touch-screen operator interface with complete plant supervision.
- Designed in compliance with the Machinery Directive and applicable standards for the food, chemical and pharmaceutical industries.
Process Advantages;
- High drying uniformity.
- Optimized heat and mass transfer.
- Reduced product residence time.
- Precise control of the final moisture content.
- High energy efficiency.
- Reduced risk of thermal degradation.
- Minimal product losses thanks to efficient recovery of fine particles.
- High operational flexibility for a wide range of products.
- Easy cleaning and maintenance.
- Easy integration into automated production lines.
