4 replies to this topic

[Ak_sxngh]

I’m working on a third-year university project involving the synthesis of methylamines (MMA, DMA and TMA) in Aspen Plus, and I’m having difficulty selecting an appropriate thermodynamic model. The process operates between 1–20 atm and 25–400 °C. I initially considered using SR-POLAR because it’s designed for polar, non-ideal mixtures at elevated pressures, but I’m not sure whether it’s suitable for this specific system.

 

Does anyone have experience with methylamine thermodynamics in Aspen or recommendations for a more appropriate model?

[breizh]

https://www.research...nol_and_ammonia

 

Take a look at this link above.

Breizh

Attached Files

•  Thermo.pdf   4.07MB   1 downloads
•  thermo hill pdf.pdf   606.01KB   1 downloads

[Ak_sxngh]

I’m aware of this abstract—they used BWR and PR as their thermodynamic models in PRO/II. However, I’m working in Aspen, and my research into BWR and PR suggests that these models typically struggle with highly polar compounds and strongly non-ideal systems, especially under elevated pressures and temperatures.

 

Should I use it anyway since this sourse uses it?

[breizh]

Sorry i cannot offer more.
Did you ask your supervisor and/or Aspen tech service? They should help you out!
my view.
Breizh.

[breizh]

edit:it'not an abstract, it's a full document,scroll down!! you need to dig more in the document. They also mentioned other eos.
Good luck.
Breizh