reboiler. Two design specifications are used to control the molar flow rates of methanol and glycerol in the dis- tillate of the distillation column, T201. The first design specification sets the molar flow rate of glycerol in stream R3 to 1 kmol/h by varying the bottom flow rate. The second design specification sets the flow rate of methanol to 0.065 kmol/h in stream R3 by varying the distillate vapor fraction. The distillate stream, R3, con- taining mostly glycerol is recycled. The bottom stream
contains 97.59% of 830.79 kg/h of glycerol carbonate as the secondary product as shown in Table 2.