Question: A gas absorption column is to be designed to absorb SO 2 from air using pure water as the absorbent. The inlet air contains 5.0

A gas absorption column is to be designed to absorb SO₂ from air using pure water as the absorbent. The inlet air contains 5.0 mol% SO₂ and flow at the rate of 30.0 mol/s and it is desired to remove 95% of the SO₂.

The column will be packed with 1-in. metal Pall rings and will be operated at 10°C and 10.0 atm absolute pressure with a water flow rate 1.2 times greater than the minimum and at 60% of flooding. Equilibrium data for the SO2-water system at 10°C are given below. Taking into account the curvature of the equilibrium line, determine:

(a) The minimum and actual

(b) The number of overall gas-phase mass transfer units, .

(c) Thecolumn diameter required to operate at 60% of flooding.

(d) The values of and and of at the top and bottom of the column.

(e) The height ofpacking required.

L/G

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