Issues regarding natural gas DEA-based carbon removal

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The main issues are two-fold: 1. How to determine the scaling factor from the simulation results to the device design parameters. 2. Selection of the form of the absorption tower. Below is my summary of these two issues; I would appreciate some guidance from experts. Regarding Issue 1: In my work, I use PRO2 for the design of natural gas MEA-based carbon removal processes. Although the simulations converge, I still have doubts about how much margin should be considered when actually designing the equipment. For example, my calculations show that a circulation rate of 4 t/h for the amine solution is sufficient to meet the design requirements. If a margin needs to be taken into account, by how much should the circulation rate be increased? Regarding question 2: The pressure of the decarbonization system I have designed is around 5.5 MPa. Is a packed tower or a floating valve tower a better choice for the absorption tower? It seems there are no precedents in China for the use of packed towers in high-pressure decarbonization. Some engineers say that for materials like MEA, which tend to foam, the foam will quickly overflow from the top of the packed tower; using a plate tower would be better in such cases. Is that true?