TY - JOUR
T1 - Model-based Optimisation and Closed-loop Control of Crystal Shape in Cooling Crystallisation
AU - Wan, Jian
AU - Wang, Xue Z.
AU - Ma, Cai Y.
PY - 2009
Y1 - 2009
N2 - A morphological population balance (PB) model is presented which links single crystal morphology description with PB process model, therefore can be applied to simulate the dynamic evolution of crystal shape as well as size distributions in crystallisation processes. In addition, the new morphological PB model can effectively deal with multiple crystal morphological forms and transitions between them. The model is then used to derive optimal temperature and supersaturation profiles leading to the desired crystal morphology. Since tracking an optimum temperature or supersaturation trajectory can be easily implemented by manipulating the cooling water flowrate in the reactor jacket, the proposed methodology provides a feasible closed-loop mechanism for crystal shape control. The methodology is demonstrated by applying it to a case study of cooling crystallisation of potash alum.
AB - A morphological population balance (PB) model is presented which links single crystal morphology description with PB process model, therefore can be applied to simulate the dynamic evolution of crystal shape as well as size distributions in crystallisation processes. In addition, the new morphological PB model can effectively deal with multiple crystal morphological forms and transitions between them. The model is then used to derive optimal temperature and supersaturation profiles leading to the desired crystal morphology. Since tracking an optimum temperature or supersaturation trajectory can be easily implemented by manipulating the cooling water flowrate in the reactor jacket, the proposed methodology provides a feasible closed-loop mechanism for crystal shape control. The methodology is demonstrated by applying it to a case study of cooling crystallisation of potash alum.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-67649101540&partnerID=MN8TOARS
UR - https://www.sciencedirect.com/science/article/abs/pii/S1570794609700811?via%3Dihub
U2 - 10.1016/S1570-7946(09)70081-1
DO - 10.1016/S1570-7946(09)70081-1
M3 - Article
SN - 1570-7946
VL - 26
SP - 483
EP - 488
JO - Computer Aided Chemical Engineering
JF - Computer Aided Chemical Engineering
ER -