Methanol dehydration to unsaturated hydrocarbons (olefins) process, called MTO, is an alternative route for methanol consumption,which can supply the petrochemical plant's feedstock. As illustrated in Fig. 5, methanol is sent to the MTO reactor and converted to ethylene, propylene, ethane, and other light hydrocarbons,over a SAPO-34 catalyst. The reactor conversion and yield are modeled based on experimental results developed by Wilson and Barger [36]. Effluent from the reactor is then routed to the CO2 removal unit. In addition to MDEA, this research project also investigated generation of DGA amine (Diglycolamine, 70% wt.).