In the second plant layout (Figure 4), which is derived from the cycle configuration proposed in [4], the cell
anode exhaust stream is cooled in the HRSG (heat recovery steam generator) of the combined cycle, then further
cooled to ambient temperature and sent to a CO2 removal section. Considered that the CO2 concentration of the
stream at the MCFC anode outlet is about 80% (dry basis), it is convenient to carry out this separation by means of a cryogenic compression – liquefaction process, where the temperature is made low enough that most of the CO2 is
condensed and separated by gravity from the gaseous combustible species included in the mixture which have a
much lower boiling point [6]. The anode stream at the HRSG exit is therefore cooled down to the ambient
temperature and then enters the separation and compression process, which has already been discussed in detail in