Dryer

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particular application. Dryers can be direct, indirect, or radiant-heat and continuous or batch wise. In the drying experiment that will be conducted in this laboratory, a direct adiabatic batch dryer is used to remove water from the desiccant. A comparison of kitty litter and some other desiccant will be conducted and optimal drying conditions for each will be determined. Hot air will be used as the regeneration medium.



IV. Experimental Design
Preliminary Analysis of Problem
The purpose of this laboratory experiment is to determine which of two available desiccants is more quickly and efficiently regenerated. The optimum conditions of regeneration will also be found. Once these conditions are determined, the better desiccant will be used to model a scale-up in which 12 tons/day of desiccant will be dried on a continuous belt dryer that is 4 feet wide and 50 feet long.
In order to analyze this procedure, the theory of solid drying must be understood. Solid drying involves two underlying processes:
1. Heat transfer: As heat is introduced to the system, water at the surface will begin to evaporate. The temperature difference between the hot air and...