Design and optimization of heat integrated dividing wall columns for improved debutanizing and deisobutanizing fractionation of NGL

CATEGORY: DEBUTANIZER
Korean Journal of Chemical Engineering, February 2013, Volume 30, Issue 2, pp 286-294
Design and optimization of heat integrated dividing wall columns for improved debutanizing and deisobutanizing fractionation of NGL
Nguyen Van Duc Long, Moon Yong Lee
School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Korea
Abstract
Describes a study for the energy-efficient integration of debutanization and deisobutanization . Researchers employed a novel, more practical approach to the design and optimization of dividing wall columns to optimize dividing wall columns.
They observed that a conventional dividing wall column and a multi-effect prefractionator arrangement significantly reduce total annual cost 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. Results demonstrated that operating cost could be greatly reduced with novel combinations of internal and external heat integration, i.e., bottom dividing wall columns employing either a top vapor recompression heat pump or a partial bottom flashing heat pump.
Full Text Source (Subscription or Fee): http://link.springer.com/article/10.1007/s11814-012-0149-2#