One hundred moles per minute of a 50 mol% n-hexane/50 mol% n-pentane liquid mixture at 85 oC and 6 atm is fed to an evaporator. In the evaporator, the temperature is kept at 70 oC by a heating/cooling jacket surrounding the outside of the evaporator tank. The liquid stream of hexane and pentane leaving the evaporator is found to be 65 mol% hexane.
a) Determine the pressure in the evaporator.
b) Determine the composition and volumetric flow rate of the vapor stream leaving the evaporator.
c) Describe IN DETAIL how you could determine the required rate of heat addition or removal.
You can assume ideal behavior for this problem and that the Antoine coefficients are valid over the entire T range. +