naa a22 4500 510821545 CHVBK 20180411083535.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0149-2 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0149-2 Design and optimization of heat integrated dividing wall columns for improved debutanizing and deisobutanizing fractionation of NGL [Elektronische Daten] [Nguyen Long, Moon Lee] Dividing wall columns, capable of reducing the energy required for the separation of ternary mixtures, were explored for the energy-efficient integration of debutanization and deisobutanization. A new practical approach to the design and optimization of dividing wall columns was used to optimize dividing wall columns. A conventional dividing wall column and a multi-effect prefractionator arrangement were shown to reduce total annual cost considerably compared with conventional distillation sequence. Various configurations incorporating a heat pump in a bottom diving wall columns were also proposed to enhance energy efficiency further. The result showed that operating cost could be reduced most significantly through novel combinations of internal and external heat integration: bottom dividing wall columns employing either a top vapor recompression heat pump or a partial bottom flashing heat pump. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Distillation nationallicence Dividing Wall Column nationallicence DWC nationallicence Natural Gas Recovery nationallicence Fully Thermally Coupled Distillation Column nationallicence Heat Integrating nationallicence Process Intensification nationallicence Long Nguyen School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut Lee Moon School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 286-294 0256-1115 30:2<286 2013 30 11814 https://doi.org/10.1007/s11814-012-0149-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0149-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Long Nguyen School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut NATIONALLICENCE 700 1- Lee Moon School of Chemical Engineering, Yeungnam University, 712-749, Gyeongsan, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 286-294 0256-1115 30:2<286 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer