A polymerization reaction is taking place in a continuous stirred tank reactor (CSTR) at 70 degree C with a reaction scheme A+B - > C+D. Here A and B are the reactants, C is desired polymer product, and D is the by - product. The reactants contained in two separate storage tanks are pumped using centrifugal pumps (one pump for each reactant) and then pre-heated to 50 degree C using heaters before being introduced to the batch reactor. The molar flow rate of A and B are 1000 kmol/hr and 500 kmol/hr, respectively. The reactant A is taken in excess and reacted completely during the reaction. After the reaction is over, the product steam is taken to a decanter stage from which two separate streams have come out. One steam contains (B+C) having a molar flow rate of 1100 kmol/hr and the other has D. The steam comprising (B+C) is next fed to a distillation column, where C is separated and collected as the distillate top product, whereas the bottom product steam contains B with a molar flow rate of 380 kmol/hr. Draw a detailed process flow diagram ( PFD) of the entire polymerization process by sketching the appropriate symbols of the storage vessels, centrifugal pump, heater, reactor, decanter, and distillation column. Neatly mark the temperature of the heaters and the reactor as given in the problem and also write the flow rates of all the steams involved in the PFD using material balance.