This work deals with the control of the crystal size distribution from an MSMPR continuous crystallizer. The cooling crystallization of potassium sulphate from aqueous solutions in a pilot-scale stirred vessel was investigated. A control strategy, based on the elimination of fines by a combined sedimentation- dissolution device, is presented. The fines removal was manipulated under a neuro-fuzzy feedback control strategy. The results were successfully applied to a pilot-scale draft-tube (DT) crystallizer and yielded promising results with respect to those obtained by adopting a PI feedback control. The proposed process control system allowed the reduction of the fines fraction by more than 30%, while maintaining operation stability and short transient responses.
Neuro-Fuzzy Control of a Continuous Cooled MSMPR Crystallizer / Chianese, Angelo; Bravi, Marco. - STAMPA. - (2002). (Intervento presentato al convegno 15th International Symposium on Industrial Crystallization tenutosi a Sorrento (Italy)).
Neuro-Fuzzy Control of a Continuous Cooled MSMPR Crystallizer
CHIANESE, Angelo;BRAVI, Marco
2002
Abstract
This work deals with the control of the crystal size distribution from an MSMPR continuous crystallizer. The cooling crystallization of potassium sulphate from aqueous solutions in a pilot-scale stirred vessel was investigated. A control strategy, based on the elimination of fines by a combined sedimentation- dissolution device, is presented. The fines removal was manipulated under a neuro-fuzzy feedback control strategy. The results were successfully applied to a pilot-scale draft-tube (DT) crystallizer and yielded promising results with respect to those obtained by adopting a PI feedback control. The proposed process control system allowed the reduction of the fines fraction by more than 30%, while maintaining operation stability and short transient responses.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
