Feasibility Study for Applying Desiccant to Low Temperature Vacuum Drying Process

Title & Authors
Feasibility Study for Applying Desiccant to Low Temperature Vacuum Drying Process
Sim, Yeonho; Kang, Jisu; Byun, Siye; Chang, Young Soo; Kang, Byung Ha;

Abstract
This study was conducted to improve the performance of low-temperature vacuum dryer by applying desiccant to cold trap. Performance evaluation was carried out using several desiccants. The amounts of absorption and diffusivity were measured based on analytic model. Results of desiccant performance evaluation revealed that silica-gel had the most excellent performance for conditions of low-temperature vacuum drying process. Silica-gel was applied to cold trap for evaluating the drying performance. The experiment results showed that the drying time was extended as the thickness of sample was increased due to increased heat and mass transfer resistance of drying sample. In addition, as heating plate temperature was increased, drying time was decreased due to increased evaporation pressure of drying sample. Furthermore, drying time with desiccant was decreased approximately 20% than that without desiccant.
Keywords
Low temperature vacuum drying;Poly $\small{{\gamma}}$ glutamic acid;Desiccant;Sorption capacity;Diffusivity;
Language
Korean
Cited by
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