#3 [25 pts) A process stream with 7.5 mole% of benzene in nitrogen at 20C and 1 bar is sent at a rate of 150.0 kmol/h to an absorber where the benzene concentration is to be reduced to less than 0.3 mole% by absorption using a stream of tetradecane with 0.002 mole fraction benzene and 0.01 mole fraction water and the rest tetradecane, which enters the absorber at 20C and 1 bar. a a) Draw a flow diagram for this process b) Use the Kremser Equations to find the number of stages required if a liquid flow rate of 2 times the minimum value is utilized. K values for benzene 0.175 c) Use the values found in part b to simulate the absorber in Aspen. What is the resulting mole fraction of benzene in the vapor outlet. d) Utilize a Sensitivity Analysis to assess how the purity of the outlet vapor stream changes with inlet liquid flow rate. Provide a plot of the benzene concentration in the outlet vapor stream as a function of solvent flow rate. e) Set a Design Spec varying the inlet liquid flow rate to achieve the desired purity of the outlet vapor stream. What is the actual liquid flow rate need to achieve the desired product purity? #3 [25 pts) A process stream with 7.5 mole% of benzene in nitrogen at 20C and 1 bar is sent at a rate of 150.0 kmol/h to an absorber where the benzene concentration is to be reduced to less than 0.3 mole% by absorption using a stream of tetradecane with 0.002 mole fraction benzene and 0.01 mole fraction water and the rest tetradecane, which enters the absorber at 20C and 1 bar. a a) Draw a flow diagram for this process b) Use the Kremser Equations to find the number of stages required if a liquid flow rate of 2 times the minimum value is utilized. K values for benzene 0.175 c) Use the values found in part b to simulate the absorber in Aspen. What is the resulting mole fraction of benzene in the vapor outlet. d) Utilize a Sensitivity Analysis to assess how the purity of the outlet vapor stream changes with inlet liquid flow rate. Provide a plot of the benzene concentration in the outlet vapor stream as a function of solvent flow rate. e) Set a Design Spec varying the inlet liquid flow rate to achieve the desired purity of the outlet vapor stream. What is the actual liquid flow rate need to achieve the desired product purity