Titolo:  On-line control of crystal properties in nonisothermal antisolvent crystallization
Autori: 
Data di pubblicazione:  2015
Rivista: 
AICHE JOURNAL  
Abstract:  The issues regarding the design and implementation of on-line optimal control strategies of crystal properties in noniso- thermal antisolvent crystallization processes to control particles’ mean size and standard deviation are dealt. The one- dimensional Fokker–Planck equation is used to represent the dynamic characteristics of the crystal growth and generate iso-mean and iso-standard deviation curves. Using controllability tools it is demonstrated that the system is ill condi- tioned in the whole operational range, posing limitations on the achievable control performance. To circumvent the problem, a control strategy is formulated by pairing crystals’ mean size with antisolvent feed rate and manipulating temperature to control the standard deviation. A novel digital image-texturing analysis approach is discussed and imple- mented to track crystals’ size distribution along the experiment and providing the on-line information for further feed- back control action. Subsequently, alternative control strategies are implemented and tested to achieve a desired crystal size distribution.
Handle:  http://hdl.handle.net/11584/110738
Tipologia: 1.1 Articolo in rivista

File in questo prodotto:
File Descrizione Tipologia Licenza  
Ghadipasha_et_al-2015-AIChE_Journal.pdf  Articolo principale versione editoriale Administrator   Richiedi una copia

Questionario e social

Condividi su: