Chemical Engineering Research & Design, Vol.77, No.7, 619-626, 1999
A new, ultracapacity tray for distillation columns
The gas flow capacity of conventional crossflow distillation trays is normally limited by the propensity of the gas to entrain liquid from the tray. Only a slight amount of such entrainment can be permitted without serious degradation of mass transfer efficiency. The tray-type contacting device described here is designed to entrain all of the liquid entering the tray, and then separate that liquid by a device located within the tray zone. As a result, considerably more gas flow can be accommodated in a distillation column sized for conventional crossflow trays. Complete distillation test data, taken at a semi-works scale, are presented along with a mechanistic model which represents the data and which can be used for extension to other distillation conditions.