Fractionation tray having packing immediately below tray deck

摘要

The invention improves the performance of fractionation trays and comprises placing a bed-like layer of packing material closely adjacent the bottom surface of the tray. The packing is located in the so- called "disengagement" zone under the tray and does not extend down to the tray below. Means are provided to spread liquid from the tray above onto the packing material.