Effect of recycle streams on energy performance and closed loop dynamics of distillation sequences

摘要: Abstract This paper presents the retrofit of five conventional distillation trains for separation quaternary mixtures hydrocarbons feed compositions with high or low content intermediate components. The implies incorporation liquid vapour recycle streams among columns. Each stream removes one condenser reboiler. introduction thermal links can lower energy consumption up to 40% in contrast widely used industry. efficiency use is achieved because streams, introduced trains, reduce remixing associated higher consumption. Also, improve dynamic responses those obtained sequences. Hence, sequences both and control properties.