Design a sieve tray column for the following application: Vapour rate Liquid rate Vapour density Liquid density Surface tension 44 000 kg/h 58 000 kg/h 0.492 kg/m 857 kg/m 25 mN/m 1.1 Calculate the column diameter. Assume a 0.6 m tray spacing and design for 80% flooding. {Hint: The diameter should be between 2.5 and 3.5 m.} D (10) 1.2 Make a provisional plate design. (7) 1.3 Determine the maximum and minimum (at 70% turndown) weeping rate. Compare these rates with the minimum design vapour velocity. (7) 1.4 Check the plate pressure drop. (6) 1.5 Check the downcomer backup and residence time. (8) M