H2S composition in the gas exiting from a distillation column at the oil refinery is a reverse flow This value of 0.03 kmol H2S in 1 mol inert hydrocarbon base in 300 K and 1 atm conditions in the filled tower.

It is reduced by washing up with 1% triethanolamine solvent. Equilibrium relation in this system (Y * = 2X) It is given as. The solution enters the column purified from H2S purified, and per kmol of the solvent. 0.013 kmol leaves the column to contain H2S. Flow rate of inert gas is 0.9 kg / m2 · s. Gas phase mass transfer coefficient to KG = 0.04 kmol / m3 · s. The molecular mass of inert gas can be taken as an average of 60 kg / kmol.

a) Calculate the minimum fluid amount.

b) Calculate the required amount of fluid in mass and molar units.

c) Write the operating line or curve equation.

d) Calculate the total number of gas-phase transfer units (NOG) using the Simpson method.

e) Find the total gas-phase transfer unit height (HOG).

f) Calculate the total fill height of the column.