Aspen Plus EO model

The example CO2 capture process, shown in Figure 8 as an Aspen Plus EO model representation, is part of an ammonia plant. Designed to scrub CO2 from ammonia synthesis gas, it includes an absorber and two solution regeneration columns, one stripping the rich, C02 laden solution leaving the absorber to semilean concentration of absorbed CO2, and the other cleaning the solution even further to lean solution... 

Figure 8 Aspen Plus EO model for an MDEA/PZ C02 capture unit.

Firstly, we will examine the VLE of binary mixtures. The Wilson model is selected for liquid activity with Redlich-Kwong EOS for vapor phase. The predictions offered by Aspen Plus [9] are in agreement with experimental data [5], except... 

The UNIQUAC model [14] was used to account for liquid phase non-idealities. The vapor phase was modeled using the Redlich-Kwong EOS ]15]. The combination of both is implemented in Aspen Plus as the UNIQ-RK property model. UNIQUAC... 

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