A study on crystallization kinetics of pentaerythritol in a batch cooling crystallizer

Yang Ho Cheon, Kwang Joo Kim, Sung Hyun Kim

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21 Citations (Scopus)

Abstract

The crystallization kinetics of pentaerythritol (PeE) in aqueous solution in the presence of impurity or not in a batch cooling crystallizer was explored. Also, the solubility and the nucleation and crystal growth kinetics of PeE in aqueous solution were investigated. A second-order dependence of PeE growth rate on supersaturation is observed in pure PeE-water system. The crystal growth rate of PeE-water system in the presence of impurity is proportional to the supersaturation to the 3.5 power. The nucleation and crystal growth behaviors for PeE-water system in a batch cooling crystallizer were grasped according to Mersmann's criteria. The nucleation in this crystallizer was found to act with heterogeneous nucleation. In this system, it suggests that the crystal growth is controlled by a complex mechanism behavior of surface integrated and diffusion limited. Simplified relation was derived for calculation of mean crystal size of product crystals from the batch cooling crystallizer. The obtained relation was verified by a set of experiments.

Original languageEnglish
Pages (from-to)4791-4802
Number of pages12
JournalChemical Engineering Science
Volume60
Issue number17
DOIs
Publication statusPublished - 2005 Sep 1

Keywords

  • Batch cooling crystallizer
  • Crystallization
  • Nucleation
  • Pentaerythritol
  • Supersaturation

ASJC Scopus subject areas

  • Chemical Engineering(all)

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