On the connection between models using different physical property methods
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I want to use MDEA to remove CO2 in an IGCC power plant, but I am facing difficulties with the methods for changing material properties in the Aspen program (such as changing from PENG-ROB to ELECNTRL). Specifically, a gasification model has now been established, using PENG-ROB as the property parameters ； Then, the MDEA desulfurization model needs to be added; this model uses ENTRL property data, and the substance MDEA itself also has to be included. However, during operation, it was found that the property parameters were missing ； In the past, the physical property parameters were automatically filled in by the software itself by default. How can this issue be resolved? Similarly, a gasification model has now been developed, using PENG-ROB as the property parameters ； Then, the Selexol desulfurization and decarburization model needs to be added; this model uses the PC-SAFT property method. How should these two models be connected?
It is also possible to use the property method in segments, or to set it within the block option.
Multiple thermodynamic models can be set up, with different thermodynamic methods specified for various unit modules in their block options.
Use different property methods in different modules, and select the option to estimate all missing parameters.