An adiabatic membrane separation unit is used to dry (remove water vapor from) a gas mixture containing 10.0 mole% H2O(v), 10.0 mole% CO. and the balance CO2. The gas enters the unit at 30°C and flows past a semipermeable membrane. Water vapor permeates through the membrane into an air stream. The dried gas leaves the separator at 30°C containing 2.0 mole% H2O(v) and the balance CO and CO2. Air enters the separator at 50°C with an absolute humidity of 0.002 kg H2O/kg dry air and leaves at 48°C. Negligible quantities of CO, CO2, O2, and N2 permeate through the membrane. All gas streams arc at approximately 1 atm.
- Draw and label a flowchart of the process and carry out a degree-of-freedom analysis to verily that you can determine all unknown quantities on the chart.
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