Multistage Zeolite Drying for Energy-Efficient Drying |
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Authors: | M Djaeni P Bartels J Sanders G van Straten A J B van Boxtel |
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Affiliation: |
a Systems and Control Group, Department of Agrotechnology and Food Science, Wageningen University, Wageningen, The Netherlands |
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Abstract: | This work discusses the potential of three multistage zeolite drying systems (counter-, co-, and cross-current) with a varying number of stages. The evaluation showed that for 2-4 stages with heat recovery the efficiency of the systems ranges between 80 and 90%. Additionally, by introducing a compressor, the latent heat in the exhaust air from the regenerator is recovered and used to heat the inlet air for an additional drying stage. As a result, for the counter-current drying system and compressor pressure 1.5-2 bar, a maximum energy efficiency of 120% is achieved, which results in halving the energy consumption compared to conventional drying systems. |
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Keywords: | Drying Efficiency Heat recovery Multistage Zeolite |
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