Journal
DRYING TECHNOLOGY
Volume 27, Issue 4, Pages 555-564Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07373930802715682
Keywords
Adsorption; Alumina pillared clay; Condensation drying; Energy efficiency; Multi-stage drying; Zeolite
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Funding
- Chemical Engineering department of the Diponegoro University
- Semarang Indonesia
- Energy Research Program EOS of the Dutch Ministry of Economics [NEOT01005]
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This work discusses the evaluation of multi-stage adsorption dryers with air dehumidification by zeolite and alumina pillared clay. In a multi-stage dryer, product is dried in succeeding stages while air leaving a stage is fed to the next stage after dehumidification by an adsorbent. Energy efficiency of the drying system is evaluated for low-temperature drying (10-50 degrees C) and compared with conventional condenser drying. Results showed that the efficiency of the multi-stage adsorption dryers increases with the number of stages. For low drying temperatures, zeolite is most favorable; for drying temperatures 40-50 degrees C, alumina pillared clay needs less cooling and deserves preference.
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