QUESTION 1: STRIPPING COLUMN DESIGN – 70 MARKS Design a suitable sieve tray tower for stripping methanol from a feed of

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QUESTION 1: STRIPPING COLUMN DESIGN – 70 MARKS Design a suitable
sieve tray tower for stripping methanol from a feed of dilute
aqueous solution of methanol. The stripping heat is supplied by
waste steam. Table 1 presents an operating conditions of the
stripping column.
Table 1: Operating conditions
Parameters Values Units
Vapour flowrate 360 kmol/h
Liquid flowrate 900 kmol/h
Vapour composition 20 mass% of methanol
Liquid composition 15 mass% of methanol
Liquid density 961 kg/m3
Liquid surface tension 40 x 10–3 N/m
Temperature 368 K
Pressure 101 325 Pa