3 replies to this topic

[Kaliz Md]

Dear comrades,

 

I am trying to simulate a condensation of C4 acetylenes using Aspen v7.2.

 

Hence I am having problem to choose the property method.

 

Beside that my cold stream is a pure component of propylene but I have problem since the stream does only allow to select mixed stream. So when I run the simulation it comes with an error.

 

For now I am using Peng-Robinson. Is it ok? 

 

Thank you.

[Ostwald]

Peng-robinson is ok, whats is the specific error? regarding to mixed stream, it's not relevant, Aspen "understands" what you mean

[Kaliz Md]

Hello Mr. Ostwald,

 

UNABLE TO MEET AREA SPEC- MINIMUM APPROACH TEMPERATURE REACHED

CALCULATED ARE LESS THAN SPECIFIED AREA

 

This is what shown when I run it in detailed mode.

 

Thank you.

[Ostwald]

maybe you should restate your problem, because the stream flows affects directly the exchange area.