A novel intensified heat integration in multicomponent distillation

Nonlinear dynamic behaviors and control based on simulation of high-purity heat integrated air separation column

“…_ P H ¼ f6:420 Â 10 10 Â ðð1 À T o1 K 11 Þ_ y N2;1 þT o1 K 12 ðy n N2;1 Ày N2;1 ÞÞ þ 9:667 Â 10 10 Â ðð1 À T o2 K 21 Þ_ x O2;40 þ T o2 K 22 …”

“…However, effective control strategy for HIASC has been a difficult challenge due to its internal thermal coupling and complicated dynamics since it was proposed, so an effective control strategy for HIASC is quite significant. It can be seen that previous reports mainly focused on characteristic analysis and optimization of HIDiC and HIASC [19,20,22,45]. Unfortunately, up to now, a little literature is about control scheme research of HIASC.…”

“…Its stripping and rectifying sections are separated into two columns, between which, there exists an internal thermal coupling that provides necessary liquid flow for rectifying section and vapor flow for stripping section. As a result, HIDiC can lead to an energy saving of about 40% compared to conventional distillation columns [19][20][21][22][23][24][25]. However, some characteristics of HIDiC, such as high nonlinearity, asymmetry and interaction, bring many difficulties to optimization and controller design, especially for high-purity columns.…”

A novel application of exergy analysis: Lean manufacturing tool to improve energy efficiency and flexibility of hydrocarbon processing

“…Several recent papers cover the improvement of heat integrated distillation systems like internally heat integrated distillation column [2], intensified heat integrated column [3], and totally heat integrated distillation column [4].…”

Ranking of rectification structures separating quaternary mixtures with exergy analysis

“…Such sensitive systems would not produce constant quality which is disadvantageous from an economic point of view; moreover, inappropriate product quality requires additional separational work, thus more energy. Other works are investigating different new improvements on thermally coupled distillation systems [7,11,12,14,15,18,[27][28][29]. These topics all show the importance and actuality of saving energy, especially in such energy consuming processes like distillation.…”