TY - JOUR
T1 - Crystallization with Sinusoidal Modulation of Stirrer Speed
T2 - Frequency Response Analysis and Secondary Nucleation Kinetics
AU - Bal, Vivekananda
AU - Peters, Baron
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2021/1/6
Y1 - 2021/1/6
N2 - In crystallization, obtaining the proper nucleation and growth parameters is essential to the design of crystallization processes. This paper studies the response of crystal size distribution (CSD) to periodic oscillations in the stirrer speed within a mixed suspension mixed product removal (MSMPR) crystallizer. We start from a model in which all processes are coupled. Stirrer speed oscillations drive oscillations in the secondary nucleation kinetics. Oscillations in the nucleation rate drive damped waves in the population distribution of growing crystals. Changes in the population of crystals drive changes in the supersaturation. Supersaturation along with the total mass of crystals influences the nucleation rate. At low frequencies, including the pseudo-steady-state limit, effects of a change in stirring rate are attenuated by the coupling to other processes. At high frequencies, stirring rate oscillations lead to pronounced waves in the CSD that might facilitate studies of secondary nucleation.
AB - In crystallization, obtaining the proper nucleation and growth parameters is essential to the design of crystallization processes. This paper studies the response of crystal size distribution (CSD) to periodic oscillations in the stirrer speed within a mixed suspension mixed product removal (MSMPR) crystallizer. We start from a model in which all processes are coupled. Stirrer speed oscillations drive oscillations in the secondary nucleation kinetics. Oscillations in the nucleation rate drive damped waves in the population distribution of growing crystals. Changes in the population of crystals drive changes in the supersaturation. Supersaturation along with the total mass of crystals influences the nucleation rate. At low frequencies, including the pseudo-steady-state limit, effects of a change in stirring rate are attenuated by the coupling to other processes. At high frequencies, stirring rate oscillations lead to pronounced waves in the CSD that might facilitate studies of secondary nucleation.
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U2 - 10.1021/acs.cgd.0c01048
DO - 10.1021/acs.cgd.0c01048
M3 - Article
AN - SCOPUS:85098792256
SN - 1528-7483
VL - 21
SP - 235
EP - 242
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 1
ER -