| Autor: |
E.J. deJong, K.A. Berglund |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Separations Technology. 1:38-45 |
| ISSN: |
0956-9618 |
| DOI: |
10.1016/0956-9618(90)80005-z |
| Popis: |
One of the most important applications of the population balance approach to crystallizer modeling is the recovery of crystal nucleation and growth rate data from steady state crystal size distributions as described by Randolph and Larson in 1971. Recent crystallization studies have revealed that growth rate dispersion, wherein crystals of the same size do not have the same growth rate, causes nonidealities that limit the usefulness of the Randolph and Larson approach. The present work presents and shows application of a procedure that allows calculation of unambiguous nucleation and growth rate kinetics in the presence of growth rate dispersion. It requires the appropriate choice of growth rate distribution for a fit to the experimental data. The method is applied to analysis of pilot scale crystallization experiments with the sucrose-water system and indicates that unimodal distributions may be incapable of describing such data. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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