Removal of an undesired component from a valuable product using a rotating packed bed

Chia Chang Lin*, Wen Tzong Liu

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

31 Scopus citations


Rotating packed beds (RPBs) have been applied to diverse applications, such as distillation, absorption, stripping, and reactive precipitation. However, the feasibility of applying an RPB to product purification processes has seldom been discussed. This paper describes the performance of an RPB toward removing hydrochloric acid from TNPP [tris(nonylphenyl)phosphite] solution and removing unreacted alcohol from an ester product mixture through gas stripping. Preliminary experiments indicate that a lower hydrochloric acid content in the TNPP solution can be achieved using a lower amount of nitrogen at atmospheric pressure. Also, a lower alcohol content in the ester product mixture can be obtained using a lower amount of stripping agent, such as nitrogen and steam under vacuum conditions. Consequently, operating costs and energy consumption are reduced markedly when using the RPB. Therefore, we are convinced that RPBs have great potential for use in product purification processes.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Issue number3
StatePublished - 05 2006


  • High gravity
  • Mass transfer
  • Rotating packed bed
  • Stripping


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