Question

#8 (20 pts) SO2 is to be removed from a CIL gas stream by contacting the gas with solid adsorbant in an adsorber. The feed gas is 7 mol % SO2 and 93% CH4. The absorber operates at 1 atm and 25°C. The solid adsorbant enters the adsorber essentially free of any SO2, 95% of the SO2 is to be removed from. the gas. An equilibrium X-Y diagram for this system is shown below Find the ratio of the minimum mass (in kg) of adsorbant required per mole of gas fed to the absorber. Show your work on the equilibrium diagram a) b) If adsorbant is fed at 1.2 times the minimum ratio, how many stages would be requircd? Show your work on the equilibrium diagram.

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Answer 1

ven -the data Molec of CHH-93% 9.3 y. G3 ad bent Spent O-d 0.09 0.08 0.06 0.05 0.04 0.03 0.02 0.5 2 Co,o. 031

ard 25'c. above So SlopeO. 67526 . Co3763 2.98 0 - O.61H7 2.98 2 xo. 25 13 0,20156 Stope O.30156 16.78 o 30156 6.752G o.co 3763

a Co, 0.co 376a). Soong chacs Stagec Aom o.d 0.0 Yo 2007 0.06 Sage 0.5 I .5 9,5 a toy