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