Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2014.1220.1224YasminS.Y.RohaniM.Z.RuzitahM.S.1120141411Distillation process is one of the common separation methods
typically for three or more components despite involving energy intensive procedures.
In natural gas liquid processing, propane and butane are the most expensive
and widely used products, together with ethane and stabilized condensate are
produced through series of conventional distillation columns. This sequence
consume massive amount of energy which contribute more than 40% of the overall
plant energy. Therefore, process modification of conventional distillation sequence
can lead to reduce energy consumption thus minimizing annual operating cost.
A strategy in this work is focusing in promoting energy efficient design through
adaptation of complex column to existing columns by introducing side-stripper
and side-rectifier schemes. A steady state approach using Aspen Plus HYSYS comparing
between conventional and two complex columns scheme (side-stripper and side-rectifier)
and energy analysis resulting favourable result which offers energy reduction
for both side-stripper and side-rectifier sequences. Side-stripper gives higher
percentage compared to side-rectifier which is 68% (for reboiler) and 70% (for
condenser). Side-rectifier shows reduction of 55% (for reboiler) and 60% (for
condenser). Both sequences give promising result to introduce energy saving
by complex columns design replacing conventional sequence in future.]]>Alhammadi, H.Y.,2008Blancarte-Palacios, J.L., M.N. Bautista-Valdes, S. Hernandez, V. Rico-Ramirez and A. Jimenez,2003Click, C., A. Clyde and S. Sharabura,2013Dejanovic, I., L. Matijasevic and Z. Olujic,2010Emtir, M. and A. Etoumi,2008Holtberg, P.D., K.A. Smith, L. Mayne, L. Doman and E.E. Boedecker et al.,2010Jones, D.S.J. and P.R. Pujado,2006Long, N.V.D., S.W. Jung, A. Kim, S.H. Abu Bakar and M. Lee,2011Malinen, I. and J. Tanskanen,2007PETRONAS,2011Bandyopadhyay, S.,2007Khan, B.H.,2006