I'm an energy and environmental student designing an absorption column removing CO2 using 15% MEA at 40oC. I have not studied chemical engineering in depth as I am not studying a pure chemical engineering degree, and i'm struggling with drawing an equilibrium curve. I know that i need to find the mole ratio of CO2 to amine for Y, however the graph has partial pressure for the Y axis. I know that I need to find Pinert by Patm-PCO2 then find the number of moles, then mole ratio.
First Qu- The graph looks as though it has a log scale on the Y axis. Do I need to change this?
Second Qu- Do I need to divide by the pressure I require in my column as ?
I've attached the graph I have drawn using the data from Gas purification (Kohl, Arthur L.; Nielsen, Richard B. © 1997 Elsevier ) as the graph from the book is not too clear on the attachment, any guidelines to reach the desired X/Y graph would be much appreciated.
Thankyou