화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.20, No.4, 755-761, July, 2003
DOI10.1007/BF02706919  Export Citation
Industrial Application of an Extended Fully Thermally Coupled Distillation Column to BTX Separation in a Naphtha Reforming Plant
Young Han Kim†, Dae Woong Choi1, and Kyu-Suk Hwang2
  • Department of Chemical Engineering, Dong-A University, Busan 604-714, Korea
  • 1Department of Chemical Engineering, Dongeui University, Busan 614-714, Korea
  • 2Department of Chemical Engineering, Pusan National University, Busan 609-735, Korea
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Aromatic compounds are yielded from naphtha reforming in a petrochemical plant, and the products are separated with binary distillation columns for benzene, toluene, xylene and heavy components in sequence. In this study, the first three columns of the fractionation process in the naphtha reforming unit are replaced with an extended fully thermally coupled distillation column (EFTCDC) also known as the extended Petlyuk column. An industrial-sized application of the EFTCDC is examined to compare the performance of the column with a conventional system. From a structural design giving the optimum structure of the column, a practical column structure is derived and used in the HYSYS simulation to find the optimal operation condition for a given set of product specifications. The EFTCDC gives an energy saving of 9.7% over a conventional three-column process. In addition, it is proved that the design procedure is good for an industrial process of 18 components.
Keywords:Process Design;Thermally Coupled Distillation;Fractionation Process;Multi-Component Distillation;BTX Separation
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