Description of CoFlo™ Tray Operation

The unique and patented design of the CoFlo™ Tray allows for significant increases in vapor and liquid handling without sacrificing separation efficiency. This is achieved by utilizing co-current flow within the tray. Liquid from the downcomer is fed uniformly to the tray by means of perforated trough dispersers. Vapor to the tray flows upward through slot-like openings between the troughs. The open (slot) area is typically in the range of 15 to 25% of the tray active area. The high vapor velocity emerging from the slot atomizes the liquid and carries it upwards to the entrainment collectors where the liquid is separated and sent to the downcomer feeding the tray below. The liquid flowing to the downcomer is free of entrained vapor and thus the downcomer backup comprises clear liquid. Also, the downcomer height is greater than the tray spacing. Accordingly, downcomer capacity is not likely to limit the loading of the CoFlo™ Tray.