| 초록 |
A new benzene separation process from the reformate of catalytic reformers is proposed, and its energy saving, economics and thermodynamic efficiency are evaluated to compare with the conventional process. The proposed process utilizes an extended divided wall column (DWC) for the feedstock reduction in the extraction column, which lowers the load of the whole process of benzene separation. The detail of the process design of the proposed process is explained. The computed results indicate that the proposed process saves 56.8% of heating duty over the conventional process and that of cooling duty is 64.6%. The economic analysis shows that the 26% reduction of investment cost and 56% reduction of utility cost are yielded from the proposed process compared with the conventional system. The thermodynamic efficiency is not significantly improved in the proposed process due to the large exergy loss in the solvent regeneration column. |
