Lecithin Dryer Technical Bulletin
2Pages

Lecithin Dryer Technical Bulletin Overview LCI lecithin dryers' extremely short residence time, narrow residence time distribution, high turbulence, and rapid surface renewal provide the perfect conditions for gently drying lecithin gums to low moisture levels while preserving color and meeting product specifications. The LCI lecithin dryer process is used worldwide to maintain the lightest possible color and to provide higher profits for lecithin producers. How It Works The LCI lecithin dryer (also commonly referred to as a "thin film evaporator") consists of two major assemblies: a heated body and a rotor. Product enters above the heated zone and is evenly distributed over the unit's inner surface by the rotor. As the product spirals down the wall, bow waves developed by the rotor blades generate highly turbulent flow, resulting in optimum heat flux and mass transfer. Volatile components are rapidly evaporated. Vapors flow counter-currently through the unit. After exiting the dryer's vapor nozzle, vapors are ready for condensing or subsequent processing. Nonvolatile components are discharged at the outlet. Continuous washing by the bow waves minimizes fouling of the thermal wall where the product or residue is most concentrated. Lecithin Dryer Design • Fixed clearance rotor design is always used for lecithin applications. The rotor design includes a modified feed design especially for lecithin applications. • Vertical configuration provides self-draining, reliable, efficient processing of lecithin gums. Units available with either an internal or external bottom bearing. • Countercurrent flow is recommended to achieve low residual moisture content. Moisture Color Operating Pressure Residence Time Acetone Insolubles LCI's Lecithin Dryer Experience LCI application experience includes soybean gums and canola oil gums. List of installed units on flip side. LCI's Capabilities to Support Your Lecithin Drying Process • Skids & Component Systems - Vacuum Systems, Condensing Systems, Dried Gums Cooler, Pumps, Instruments, AI and AV adjustment, etc. • Aftermarket - Repair, Troubleshoot, Training, Spare Parts <0.5% (One Unit) <0.1% (Two Units in Series) Gardner Color (generally 11-17) 30-50 Torr 5-60 seconds 62-70% LCI Corporation 4433 Chesapeake Drive Charlotte, NC 28216

LECITHIN DRYER EXPERIENCE LIST Year Sold LCI Corporation • 4433 Chesapeake Drive • Charlotte, NC 28297 • Sales: 704-394-8341 •Service:704-458-3338 • www.lcicorp.com