You have been asked to decide whether a tray column or sieve column should be utilised for the following application: Vapour rate 9 500 kg/h Vapour density 0.95 kg/m3 Liquid rate 15 000 kg/h Liquid density 880 kg/m3 Liquid viscosity 0.32 cP Liquid surface tension 0.055 N/m 1.1 A column packed with 1 in. ceramic Pall Rings is being considered. Estimate the diameter of the column for 80% flooding. (10) 1.2 Estimate the diameter of a sieve tray at 80% flooding. (8) 1.3 Based on your results, would you choose a packed or tray column for this duty? What other considerations would influence your decision? (3) NB: State all assumptions