Sustainability Assessment of Chemical Processes: Evaluation of Three Synthesis Routes of DMC

Table 4

Process description for Route B.

Process unit	Type	Conditions	Notes
Reac 1	Stoichiometric reactor	= 100°C, = 140 bar	Conversion of propylene oxide = 100%
Reac 2	Stoichiometric reactor	= 150°C, = 1 bar	Conversion of methanol = 5.25%
Col 1	RadFrac column	15 stages, distillate rate = 2, reflux ratio = 5	Separation of propylene carbonate
Col 2	RadFrac column	15 stages, distillate rate = 1.895, reflux ratio = 5	Separation of methanol
Col 3	RadFrac column	15 stages, distillate rate = 0.06, reflux ratio = 5	Concentration of DMC after distillation = 85.9%
Cond	Cooler	= 20°C, = 1 bar	Cooling of DMC