New Control Structure for Divided-Wall Columns

摘要: Industrial applications of the divided-wall column for separation ternary mixtures have increased in recent years with about 40 columns reported to be service. The is a practical way implement topology Petlyuk that features two (a prefractionator into which feed introduced and main from sidestream product withdrawn) interconnected vapor liquid streams arising single reboiler condenser. Many papers discuss steady-state design issues propose heuristic rigorous optimization methods. dynamic control has been explored relatively small number papers. Control more difficult than conventional two-column sequence because there interaction among controlled manipulated variables since four sections are coupled. split fixed at stage cannot changed during operation, b...