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Counter flow cooling drier with integrated heat recovery

United States Patent

August 18, 2009
View the Complete Patent at the US Patent & Trademark Office
A drier apparatus for removing water or other liquids from various materials includes a mixer, drying chamber, separator and regenerator and a method for use of the apparatus. The material to be dried is mixed with a heated media to form a mixture which then passes through the chamber. While passing through the chamber, a comparatively cool fluid is passed counter current through the mixture so that the mixture becomes cooler and drier and the fluid becomes hotter and more saturated with moisture. The mixture is then separated into drier material and media. The media is transferred to the regenerator and heated therein by the hot fluid from the chamber and supplemental heat is supplied to bring the media to a preselected temperature for mixing with the incoming material to be dried. In a closed loop embodiment of the apparatus, the fluid is also recycled from the regenerator to the chamber and a chiller is utilized to reduce the temperature of the fluid to a preselected temperature and dew point temperature.
Shivvers; Steve D. (Prole, IA)
11/ 881,779
July 27, 2007
STATEMENT REGARDING UNITED STATES GOVERNMENT SPONSORED RESEARCH OR DEVELOPMENT The present invention was at least in part made with support from the United States Government under Contract No. DE-FC36-01G011037 awarded by the Department of Energy. The United States Government has certain rights in the invention.