Slit devolatilization of polymers has been considered in a recent work by Maffettone et al. (1991), who have presented a successful model for single slit devolatilization. In this article, the stability of operation of a realistic multislit process is considered. It is shown that the flow rate per slit which can be stably operated may be significantly less than the optimal one for single slit operation. Stability improves as the concentration of volatiles in the feed solution decreases. The non-Newtonian character of the feed solution at high shear rates is discussed in qualitative terms.
Stability of multislit devolatilization of polymers / Ianniruberto, Giovanni; Maffettone, PIER LUCA; Gianni, Astarita. - In: AICHE JOURNAL. - ISSN 0001-1541. - STAMPA. - 39:(1993), pp. 140-148. [10.1002/aic.690390114]
Stability of multislit devolatilization of polymers
IANNIRUBERTO, GIOVANNI;MAFFETTONE, PIER LUCA;
1993
Abstract
Slit devolatilization of polymers has been considered in a recent work by Maffettone et al. (1991), who have presented a successful model for single slit devolatilization. In this article, the stability of operation of a realistic multislit process is considered. It is shown that the flow rate per slit which can be stably operated may be significantly less than the optimal one for single slit operation. Stability improves as the concentration of volatiles in the feed solution decreases. The non-Newtonian character of the feed solution at high shear rates is discussed in qualitative terms.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
