What thermodynamic equation is suitable for choosing in the absorber during PRO simulation?
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Feed composition: 50% ammonia, 25% air, 25% water vapor. I would like to ask everyone for advice. It’s urgent
Wilson may have a higher accuracy rate, so it is recommended to use it.
Water and ammonia are easy to deal with, as is water and air. But when these three are combined, it might get complicated; there’s no ready-made solution, so one has to try each combination one by one.
Try several different equation of state and compare them to see which one gives more accurate results. It’s best to compare it with the actual value.
The elecnrtl model!
The key is ammonia and water; there’s no need to consider the impact of air!
It was recently discovered that Aspen has a dedicated ammonia-water module, which everyone can give a try.
PROII and Aspen both have dedicated ammonia process packages, so they are not considered; instead, the Amine thermodynamic equation is chosen
Select the Amine module; however, it is not included with PRO II and must be purchased separately. If SRK-Simsci is not selected, it should be relatively more accurate
Aspen has dedicated ammonia process packages – how can these packages be imported?
PROII has dedicated ammonia simulation examples; select the Amine thermodynamic equation
What was said above makes sense. However, I personally believe that using SOUR acid water packages for calculations yields more accurate results; these packages can accurately reflect the characteristics of systems consisting of ammonia, CO2, H2S, and water. Of course, it is still necessary to include the calculations for the components that are not present (CO2, H2S), so they should be entered in, with their flow rates set to 0. Personally, I think using AMINE packs is not appropriate, as it is not a system in which organic amines are present. This post was last edited by kaitian007 on 2009-3-18 09:29.]