Modelling and dynamics of an air separation rectification column as part of an IGCC power plant

A novel cryogenic air separation process based on self-heat recuperation

“…To produce liquid nitrogen during cryogenic distillation, a two-column separation process, consisting of low and high pressure columns, has been developed and is widely used. By combining the condenser of the high pressure column with the reboiler of the low pressure column, the latent heat of vaporization of air can be exchanged with the condensation heat of pure nitrogen in the two-column separation process [3][4][5][6][7][8]. Thus, not only is nitrogen liquefied in the process but also the energy consumption of the process can be decreased by heat exchange.…”

A survey on current advanced IGCC power plant technologies, sensors and control systems

“…Seliger et al presented a dynamic model of a packed distillation column for cryogenic air separation in IGCC to investigate the pressure dynamics [125]. That study showed that the short-term response in that system is governed by the transient behavior of the fluid dynamics whereas the long-term response is dominated by the nonlinear dynamics of the concentration profiles inside the column.…”

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

“…Seliger et al presented a dynamic model of HIASC, which was able to describe pressure dynamics supposedly responsible for mass flow fluctuations that had strongly affected the system's transient behavior [43]. Miller and Luyben studied the improving agility of HIASC and made dynamic responses of side rectifier faster by using collection points [44].…”