At a particular location in a counter current gas absorber,

At a particular location in a counter current gas absorber, the mole fraction of the transferring species (solute A) in the gas phase is 0.030, and the mole fraction of this species in the liquid phase is 0.0 10. The gas film mass-transfer coefficient is given ky1.0 lb-mole/ft2· hr, and 80% of the resistance to mass transfer is in the liquid phase. Equilibrium distribution data at the temperature and pressure of the process are provided below:

XA 0.0000 0.0050 0.0100 0.0150 0.0200 0.0250 0.0300 0.0350 0.0400 YA 0.0000 0.0015 0.0030 0.0055 0.0090 0.0135 0.0200 0.

a. Plot out the equilibrium line in mole fraction coordinates, plot out the operating point (xA, yA), and then estimate x*A and y*A from the graph. 

b. Determine the inter phase compositions xA,i and yA,i for solute A. 

c. Calculate the overall mass-transfer coefficient Ky for the gas phase, and the molar flux NA.

Distribution
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