Energy efficiency of multi-stage adsorption drying for low-temperature drying

M. Djaeni, G. van Straten, P.V. Bartels, J.P.M. Sanders, A.J.B. van Boxtel

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)


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 languageEnglish
Pages (from-to)555-564
JournalDrying Technology
Issue number4
Publication statusPublished - 2009


  • process integration
  • air
  • freeze

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