brigid and luigi are engineers who are creating thin polymer membranes that will help create clean water. using a steady state process, a mixing chamber combines two streams. the first stream is 4.25 wt% polymer ( P,MW=1.62*10^6) and the balance water (H2O), and the second stream is pure crosslinker(X, MW=1.00*10^2). the mass flow rate are: 72.3 g/hr for the polymer + water stream and 6.28g/hr for the crosslinker stream. the mixture exiting the mixing chamber is then spread into a membrane inside an evaporator. A stream of pure water exits the evaporator as a gas, and a second exit stream contains the final membrane. the chemical reaction between the polymer and crosslinker is not considered when completing the material balances on this process. A) Draw and label a process flow diagram. number the streams. B) calculate the component mass flow rate (g/hr) for all streams exiting the evaporator. C) Determine the total molar flow rate (mol/day) and mole fractions for the polymer+ water stream entering the mixing chamber.
brigid and luigi are engineers who are creating thin polymer membranes that will help create clean water. using a steady state process, a mixing chamber combines two streams. the first stream is 4.25 wt% polymer ( P,MW=1.62*10^6) and the balance water (H2O), and the second stream is pure crosslinker(X, MW=1.00*10^2). the mass flow rate are: 72.3 g/hr for the polymer + water stream and 6.28g/hr for the crosslinker stream. the mixture exiting the mixing chamber is then spread into a membrane inside an evaporator. A stream of pure water exits the evaporator as a gas, and a second exit stream contains the final membrane. the chemical reaction between the polymer and crosslinker is not considered when completing the material balances on this process.
A) Draw and label a process flow diagram. number the streams.
B) calculate the component mass flow rate (g/hr) for all streams exiting the evaporator.
C) Determine the total molar flow rate (mol/day) and mole fractions for the polymer+ water stream entering the mixing chamber.
D) the fraction of the water leaving the evaporator in the gas phase decreases by 15%. The mass fraction of water in the membrane exiting the evaporator will increase, decrease, stay the same
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