Acetone product was obtained in the bottom streams of the two flash separators (S-15 and S-19) having a 90% mass fraction. A heat exchanger model was applied to analyze how much of the heat could be recovered from the hot product stream as shown in Figure and Figure . For the heat exchanger simulation, the stream with the exact properties as the reactor outlet product stream (S-13) entered a heat exchanger as the hot stream. Meanwhile, a stream with exact properties as the IPA cold feed stream (S-11) entered the heat exchanger as a cold stream. The heat exchanger was modelled with a pinch point of 15℃. From the heat recovery simulation, 60% of the energy could be recovered from the hot product stream with a pinch point temperature of 15°C. With the utilization of a heat exchanger, 49900kJ/hr was the net energy required to heat the feed stream.