Table 3. Evaluation of the Energy Consumption of the GVL Recovery Processes Based on Vacuum Distillation and Liquid CO2 Extraction, Using the Simplified Simulation Modelsa.
| vacuum distillation | liquid CO2 extraction | |
|---|---|---|
| heating duty | 19.55 GJ/ton of wood | 0.68 GJ/ton of wood |
| cooling duty | –19.47 GJ/ton of wood | –0.49 GJ/ton of wood |
| CO2 compression | 0.00 GJ/ton of wood | 0.41 GJ/ton of wood |
a
See the Supporting Information (SI Section 8). The energy of mixing and vacuum pumping and efficiency were not considered.