M. Flender et al., CLASSIFICATION OF NEW PRODUCT CHANGEOVER STRATEGY (NPS) FOR DIFFERENTAPPLICATION OF DISTILLATION-COLUMNS, Computers & chemical engineering, 20, 1996, pp. 1131-1136
A New Product changeover Strategy (NPS) is presented in this paper for
simple, safe and time-optimal product changeover operations of distil
lation columns. The NPS is theoretically developed from analysis of ti
me-depending changes of the concentration profiles during a product ch
angeover operation. The NPS is a two step strategy from which a succes
sive change of the process variables can be obtained. The time, at whi
ch these variables are optimally changed is at the beginning of the pr
oduct changeover operation and at a certain time determined from the m
inimum of an analytically derived characteristic function.