Process mode for the A3 example simulation

The objective of Process mode is to provide an overall mass and energy balance for the process and to estimate the product flowrates and compositions. We switch the following process specifications to meet the design requirements:

• For the Feed Source, we switch the mass flow (W) and molar flow (F) specifications to set the fresh IPA-water feed to 100 kmol/h.

• We calculate the boilup ratio of the first tower (T1.BoilupRatio) to set the feed flow of the cyclohexane feed to the first tower (P1.W) to 12,270 kg/h.

• For the V1 Separator (decanter), we calculate the heat duty (Duty) to set the temperature (T) to 45°C.

• For the P2 Pump, we calculate the pressure drop (DP) to set the outlet pressure (P2) to 200 kPa.

• For the E2 heat exchanger, we calculate the heat duty (Duty) to set the tube-side outlet vapor fraction (VFto) to 0.5.

• For the E3 heat exchanger, we calculate the heat duty (Duty) to set the tube-side outlet temperature (Tto) to 88°C.

• For the second tower (T2), we also calculate the reflux ratio (RefluxRatio) to set the molar reflux rate (Lreflux) to 53.3 kmol/h.

• We calculate the boilup ratio of the second tower (T2.BoilupRatio) to set the molar composition of IPA in the final water product (SNK1.z[IPA]) to 0.001.

• We calculate the mass flow rate of the fresh cyclohexane feed (Makeup_CH.W) to set the molar composition of IPA in the final IPA product (Pure_IPA.z[IPA]) to 0.999.