Abstract
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°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°C, alumina pillared clay needs less cooling and deserves preference.
Original language | English |
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Pages (from-to) | 555-564 |
Journal | Drying Technology |
Volume | 27 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2009 |
Keywords
- process integration
- air
- freeze