Metastable limit dynamics and optimal cooling curve of batch seeded crystallization

Seunghee Won, Kwang S. Lee, Chung S. Choi, Ju Seok Lee, Dae Ryook Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For seeded cooling crystallization, itn is required that the solution is maintained at a supersaturation state within the metastable limit for suppression of homogeneous nucleation. However, the metastable limit is not fixed but time-varying depending upon the solution history. in this study, dynamics of the metastable limit has been exploited. Using the experimental results obtained under various cooling rates, the metastable limit was expressed to have a nonlinear first-order dynamics to a change in the cooling rate. By incorporating this model, an optimal cooling curve was determined for (NH 4)2SO4 crystallization from the (NH 4)2SO4-NH4NO3-H 2O ternary system and experimental verification has been performed.

Original languageEnglish
Title of host publicationIFAC Proceedings Volumes (IFAC-PapersOnline)
Pages183-188
Number of pages6
Volume16
Publication statusPublished - 2005 Dec 1
Event16th Triennial World Congress of International Federation of Automatic Control, IFAC 2005 - Prague, Czech Republic
Duration: 2005 Jul 32005 Jul 8

Other

Other16th Triennial World Congress of International Federation of Automatic Control, IFAC 2005
CountryCzech Republic
CityPrague
Period05/7/305/7/8

Fingerprint

Crystallization
Cooling
Supersaturation
Ternary systems
Nucleation

Keywords

  • Batch crystallization
  • Batch model predictive control
  • Cooling crystallization
  • Metastable limit

ASJC Scopus subject areas

  • Control and Systems Engineering

Cite this

Won, S., Lee, K. S., Choi, C. S., Lee, J. S., & Yang, D. R. (2005). Metastable limit dynamics and optimal cooling curve of batch seeded crystallization. In IFAC Proceedings Volumes (IFAC-PapersOnline) (Vol. 16, pp. 183-188)

Metastable limit dynamics and optimal cooling curve of batch seeded crystallization. / Won, Seunghee; Lee, Kwang S.; Choi, Chung S.; Lee, Ju Seok; Yang, Dae Ryook.

IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 16 2005. p. 183-188.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Won, S, Lee, KS, Choi, CS, Lee, JS & Yang, DR 2005, Metastable limit dynamics and optimal cooling curve of batch seeded crystallization. in IFAC Proceedings Volumes (IFAC-PapersOnline). vol. 16, pp. 183-188, 16th Triennial World Congress of International Federation of Automatic Control, IFAC 2005, Prague, Czech Republic, 05/7/3.
Won S, Lee KS, Choi CS, Lee JS, Yang DR. Metastable limit dynamics and optimal cooling curve of batch seeded crystallization. In IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 16. 2005. p. 183-188
Won, Seunghee ; Lee, Kwang S. ; Choi, Chung S. ; Lee, Ju Seok ; Yang, Dae Ryook. / Metastable limit dynamics and optimal cooling curve of batch seeded crystallization. IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 16 2005. pp. 183-188
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