Process flow simulation for the liquid-phase synthesis of dimethyl carbonate from methanol

The following are the Aspen Plus simulation steps for the liquid-phase synthesis of dimethyl carbonate from methanol: 1. Create a new project in Aspen Plus and select appropriate thermodynamic methods and components. 2. Add three material flows, namely methanol, carbon dioxide, and dimethyl carbonate. When adding material flows, it is necessary to set their physical properties and initial composition. 3. Add a reactor unit in the “process flow diagram”. In the reactor unit, appropriate reaction models and reaction conditions are selected, such as parameters like reaction temperature, pressure, catalyst type, and reaction time. 4. Introduce the methanol and carbon dioxide streams into the reactor unit, where a reaction takes place. The dimethyl carbonate produced as a reaction product flows out of the reactor unit, forming a new material stream. 5. Feed the new dimethyl carbonate stream, along with the original methanol and carbon dioxide streams, into the mixing unit. In the mixing device, they are thoroughly mixed to ensure complete reaction. 6. Finally, the mixed material is fed into a separation unit to isolate the desired pure dimethyl carbonate product. During the separation process, it is also necessary to treat the waste material streams in order to meet environmental regulations. The above are the Aspen Plus simulation steps for the process of synthesizing dimethyl carbonate via methanol in the liquid phase. The specific parameter settings and process details can be adjusted according to actual circumstances. .