A falling liquid film within a gasliquid contactor of 1.50 m length is in contact with 100%
Question:
A falling liquid film within a gas–liquid contactor of 1.50 m length is in contact with 100% carbon dioxide gas at 1.0 atm and 25°C. The wetted surface area is 0.50 m2, and the liquid film thickness is 2.0 mm, which is thin enough to prevent ripples or waves in the falling liquid film. The liquid delivered to the contactor does not initially contain any dissolved CO2. At 25°C, the Henry’s law constant for the dissolution of CO2 gas in water is 29.5 m3 · atm/kgmole, and the molecular diffusion coefficient for CO2 in liquid water is 2.0 × 10-5 cm2/s. What is the average molar flux of CO2 into the film? What is the estimated bulk concentration of dissolved CO2 in the liquid exiting the process?
Step by Step Answer:
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster