Use of calorimetry model and batch control technique for scale-up of unseeded batch cooling crystallization of poly(hydroxybenzophenone)

Huiyong Kim, Yookyung Bang, Kwang Soon Lee, Dae Ryook Yang

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3 Citations (Scopus)


A scale-up method to design and implement a cooling profile for unseeded batch cooling crystallization has been investigated. The reduced ratio between the heat-transfer area and the volume during scale-up to a large crystallizer causes an increase in the temperature distribution in the reactor, which can trigger unwanted nucleation around the cold spots of the vessel wall. To address this problem, a method is proposed to designa cooling profile for a scaled-up crystallizer that can replicate the seed-generation stage of a small crystallizer by effectively suppressing the unwanted nucleation. The use of a batch control technique as method ofimplementing the cooling profile in a large crystallizer is also proposed. Experiments were conducted with a 100 mL reactor and a 5 L scaled-up reactor for the unseeded crystallization of poly(hydroxybenzophenone) (PHBP) to verify the performance of the proposed method.

Original languageEnglish
Pages (from-to)6776-6782
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number14
Publication statusPublished - 2009 Jul 15


ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

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