TY - CHAP
T1 - Model-based Optimisation and Closed-loop Control of Crystal Shape in Cooling Crystallisation
AU - Wan, J.
AU - Wang, Xue Z.
AU - Ma, C.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 - https://www.sciencedirect.com/science/article/abs/pii/S1570794609700811
UR - https://www.scopus.com/pages/publications/67649101540
U2 - 10.1016/S1570-7946(09)70081-1
DO - 10.1016/S1570-7946(09)70081-1
M3 - Chapter (peer-reviewed)
SN - 9780444534330
VL - 26
T3 - Computer Aided Chemical Engineering
SP - 483
EP - 488
BT - Computer Aided Chemical Engineering
PB - Elsevier
ER -