关键词: batch stripper;control;operation

Abstract: A stripping batch distillation column is preferred when the amount of the light component
in the feed is small and the products are to be recovered at high purity. The operation
modes of a batch stripping are believed to be the same as those of a rectifier. However,
the control system of a stripper is different. In this paper, we explore three different
control methods with Hysys (Hyprotech Ltd. 1997) for a batch stripper. The main difference
is the control scheme for reboiler liquid level: (a) controlled by reflux flow; (b)
controlled by reboiler heat duty; (c) controlled by bottom product flow. The main
characteristics of operating a batch stripper with different control scheme are presented
in this paper. Guidelines are provided for the startup of a batch stripper, the effects of
somecontrol tuning parameters on the column performance are discussed.

Key words: batch stripper, control, operation