Problem1 Figure 5(a) is an MEN flowsheet we synthesized in class, which is the part above the pinch point. In class, we stated that LI should be split into two branches in order to maximize the recovery of the key component from R1 and R2. For this design problem, the equilibrium relations are CR-08CI+0,002 and CR-0.SCu. In addition, AC-0.0 (0.115) R (0.050) 11.3 (0.0509 1S L(0050) 12.s 0.110 (0.109) L(0.09 os Fig. sa) Pinch point However, in design, a student did not want to split LI, and placed an MTU i.e., El) between RI and L1 to transfer all the amount of the mass of the key component in RI to LI (see Fig.2b)) Now you are asked to keep El in design and continue the design to recover the key component from R2 to the maximum amount using the minimum number of MTUs Note that because of the placement of El in design already, the pinch point of the design problem may change. Please provide your solutions with detailed steps to the following questions What is the new pinch point? What is the minimum requirement of the external lean stream, in terms of the key component? a) b) c) What is Umin MMSAR d) What is your flowsheet developed? (0,115) R EI (000) [131 (0 100) R (0050) [1.5 (0050) [25] MPEI 0.0845 (0.109) L,I