Abstract
This work presents 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 a number of succeeding stages and for each stage the air is dehumidified by the adsorbent. The exhaust air from each stage is reused for product drying in a following stage after passing a bed with adsorbent. The heat efficiency of the drying system is evaluated and compared with a conventional drying system using air dehumidified by condensation. The evaluation concerns the effect of stage number, inlet dryer temperatures 10-50°C and inlet ambient air 10-25°C. Results show that the performance of the multi-stage adsorption dryers increases with the number of stages and a three stage system is economically most promising. For varying ambient air conditions, zeolite as adsorbent is the most favourable.
Original language | English |
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Title of host publication | Proceedings of The 5th Asia-Pacific Drying Conference, Hong Kong, China, 13 - 15 August, 2007 |
Place of Publication | Hong Kong |
Pages | 589-594 |
Publication status | Published - 2007 |
Event | The 5th Asia-Pacific Drying Conference - Duration: 13 Aug 2007 → 15 Aug 2007 |
Conference
Conference | The 5th Asia-Pacific Drying Conference |
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Period | 13/08/07 → 15/08/07 |