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

Table 5

Process description for Route C.

Process unit	Type	Conditions	Notes
Reac	Stoichiometric reactor	= 120°C, = 27 bar	Conversion of CH3OH = 16.49%
Sep	Component separator	Split fraction of CO and O2 = 100%	Separation of unreacted CO and O2
Flash	Flash separator	= 99.1°C, = 3 bar
Col 1	RadFrac column	15 stages, distillate rate = 1.307, reflux ratio = 5	Separation of methanol
Col 2	RadFrac column	15 stages, distillate rate = 0.148, reflux ratio = 10	Concentration of DMC after distillation = 85.4%
Cond	Cooler	= 20°C, = 1 bar	Cooling of DMC