| 초록 |
Though p-xylene derived from naphtha reformate is in high demand as raw material in the production of polyesters and polyethylene terephtalates, its separation from the FCC reformate is not easy. When a proper solvent for the p-xylene separation is available, the extractive distillation can be applied in the process in replacement of adsorption separation requiring a large amount of costly adsorbate and desorption followed by distillation in sequence. In the extractive distillation nitrobenzene has been utilized to examine the performance of p-xylene separation from its ethylbenzene mixture. An extractive distillation and solvent recovery were applied to obtain 99.6% purity p-xylene with 99.5% recovery.
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