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Fundamentals of Momentum , Heat , and Mass Transfer 5th Edition James R. Welty , Charles E. Wicks , Robert E. Wilson Gregory L. Rorrer John Wiley. Convective Mass Transfer Between Phases
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Fundamentals of Momentum,Heat, and Mass Transfer5th EditionJames R. Welty, Charles E. Wicks, Robert E. WilsonGregory L. RorrerJohn Wiley
ConvectiveMassTransfer BetweenPhases 29.10 At a particular location in a countercurrent absorber used to remove solute A from a gas stream, the mole fraction of the transferring species A in the bulk gas stream is 0.035 and the mole fraction of solute A in the bulk liquid phase is 0.01. The total system pressure is 2.0 atm and the temperature is 300 K. If 60% of the resistance is in the gas phase. • a. Determine the interfacial compositions, Xa,i and ya,i. The gas–liquid equilibrium relationship is linear, as given by yA= 0.3 xA. • b. If ky = 1.25 g mole/m2 s (mole fraction), calculate the overall coefficient, Ky for the gas phase at the operating point of theprocess. • c. Calculate the overall coefficient Kx for the liquid phase at the operating point of the process.
DATOS LIQUIDO GAS • GAS LIQUIDO • T= 300 K P = 2atm • Xa =0.01 Ya =0.035 • 60% resistencia en el líquido • Ya=0.3xa
1/ky/1/Ky = Ky/ky= 0.6 =ya-yai/ya-ya* • Por lo tanto • Ya=0.3xa por lo tanto y*a=0.3*0.01=0.003 • 0.6 = 0.035-yai/0.035-0.003 yai = 0.0158 Por lo tanto Xai =yai/0.3 = 0.0527 a)
