Distillation in a rotating packed bed

Chia Chang Lin*, Tsung Jen Ho, Wen Tzong Liu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

122 Scopus citations


This work presents a novel rotating packed bed owing to its applicability in distillation. Distillation experiments were conducted using the methanol-ethanol system at atmospheric pressure and total reflux conditions with two packings. Rotor speeds ranged from 600 to 1600 rpm, which provided 42-298 equivalent gravitational force. Experimental results indicated that 1-3 theoretical plates were achieved with a packing thickness of 8.6 cm. Consequently, the height equivalent of a theoretical plate (HETP) of about 3-9 cm can be obtained in a rotating packed bed, i.e., much lower than that in a conventional packed bed. An empirical correlation was also proposed, implying that the HETP value varied with centrifugal force to the 0.23-0.26 power.

Original languageEnglish
Pages (from-to)1298-1304
Number of pages7
JournalJournal of Chemical Engineering of Japan
Issue number12
StatePublished - 12 2002
Externally publishedYes


  • Distillation
  • High gravity
  • Mass transfer
  • Pressure drop
  • Rotating packed bed


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