본 연구에서는 용매로써 sulfolane을 사용하고 2기의 증류탑을 이용하여 톨루엔이 과량 함유된 비 방향족 혼합물로부터 고 순도의 톨루엔을 생산해 내는 추출증류공정에 대한 전산모사 작업을 수행하였다. Sulfolane 용매를 이용한 추출증류공정의 모사를 위한 열역학 모델식으로는 NRTL 액체 활동도계수 모델식을 사용하였으며 범용성 화학공정 모사기인 Aspen Plus 12.1을 사용하였다. 모사 결과 최종제품으로 얻어진 톨루엔의 순도는 99.8 wt％였으며, 원료에 대한 회수율은 99.65％로 나타남을 알 수 있었다.

In this study, computer modeling and simulation works were performed to obtain nearly pure toluene prod-uct from toluene containing non-aromatic compounds using sulfolane as a solvent through an extractive distillation pro-cess. NRTL liquid activity coefficient model was adopted for phase equilibrium calculations and Aspen Plus release12.1, a commercial process simulator, was used to simulate the extractive distillation process. In this study, it was con-cluded that the toluene product with a purity of 99.8 percent by weight and a recovery of 99.65 percent was obtainedthrough an extractive distillation process.

Extractive Distillation Solvent NRTL Liquid Activity Coefficient Model Simulation Modeling

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