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Exact(20)
The totally refluxed operation mode makes the reflux drum interact solely with the reaction operation involved and retards considerably the dynamics of the latter.
Also, light gases eliminated from top of the reflux drum combined with the liquid flow removed from the bottom of reflux drum.
The water stream is removed from the bottom of the distillation reflux drum.
The bottom stream of reflux drum containing liquid hydrocarbon returned to Stripper as the reflux stream.
The water stream from the bottom of this separator was mixed with the water from the bottom of the distillation reflux drum.
The two reflux drum mode of CTR is also suitable for the separation of the mixture containing a large amount of light component.
Similar(36)
The present work proposes a novel cyclic total reflux (CTR) operation of batch distillation with two reflux drums working alternatively.
First, a nonlinear adaptive state estimator/observer (ASE/ASO) was developed based on a simple observer model structure that mainly consists of only two component balance equations around the condenser-cum-reflux drum and the reboiler-cum-column base.
The model structure is so simple that the estimator design was performed based on only two component balance equations around the condenser-reflux drum and the reboiler-column base systems of the distillation column.
The predictor model of both the ASE estimators includes only a component mole balance equation around the condenser-reflux drum system and an extra state equation having no dynamics, and therefore, there is a large process/predictor mismatch.
With cooling water supplied at 305 K, a reflux-drum temperature of 322 K is normally used for column design.
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