The benefits of recovering aromatics by extractive distillation are the reduction of energy consumption and that of investment cost. CPC Corporation and AMT Inc. successfully transformed the liquid-liquid extraction process of the fifth Aromatics Unit in Kaohsiung Refinery into an extractive distillation process to recover aromatics from the full-ranged C6~C8 pygas. This world-leading revamped process has passed the commercial production test run. The demonstration of two sulfolane-based connected extractive distillation columns operation has been shown as well. Therefore, this new process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones. Compared to LLE process, the operational data showed that the ED process has about 10~15% energy saving.