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Liquid Or Vapor Flow On A Stage Tending To Disappear (Aspen Simulation

aspen column simulation

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#1 Arpit_Jain

Arpit_Jain

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Posted 28 November 2012 - 01:33 AM

Dear Experts,

While carry out simulation of a flowsheet, I am encountering an error in a column as given below:


Block: STABLIZR Model: RADFRAC

Convergence iterations:
OL IL Err/Tol
1 10 2.9206
2 10 0.14320
3 10 0.78093E-01
4 10 0.13246E-01
5 10 0.26630E-01
6 10 0.18233E-02
** ERROR
VAPOR OR LIQUID FLOW ON STAGE 10 IS TENDING TO DISAPPEAR.
PLEASE REVIEW REFLUX/BOILUP AND DESIGN SPECIFICATIONS.

I checked the results in temperature profile of trays under profiles section and found out that liquid and vapour flow is present and it is not tending to disappear. In fact it is as it should be. Moreover I have tried changing reboiler duty but found no change.
Please help me in this regard.

Thanking you in advance.

Sincere regards,
Arpit Jain

Edited by Arpit_Jain, 28 November 2012 - 03:16 AM.


#2 Arpit_Jain

Arpit_Jain

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Posted 28 November 2012 - 03:55 AM

My simulation file has got converged and it happened playing with the reboiler duty. So now I just want to understand the message given by the above mentioned error (other than manipulating duty).
If any has any idea, please help.




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