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Aspen Hysys Decanter Failure


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#1 SadEngineer

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Posted 14 March 2019 - 01:22 PM


Hello Dear Engineers,
I need separate two heterogeneous liquid liquid mixture(organic and water phase) In aspen hysys i have tried but 3 phase separator did not separate them and all stream throuhput same location.
if there's anyone knows? Can you help please :(

#2 ccwlun

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Posted 15 March 2019 - 01:14 AM

Hi,

 

Don't be sad. May i know what components are you trying to separate?



#3 PaoloPemi

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Posted 15 March 2019 - 01:34 AM

make sure the mixture can separate at specified T, P and select the proper models (fugacity calc's),

for multiphase equilibria I adopt a different software (Prode Properties) but (with the same models and BIPs) you should obtain the same values with different simulators....



#4 SadEngineer

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Posted 15 March 2019 - 03:12 AM

I cant do it still.My components are nitrobenzene, benzene, sulfiric acid, water. Liquid liquid heterogeneous mixture but didnt separate. I selected Nrtl but i dont know which package should be. And I dont understand BIPs means. I m very sad. I have to write a report in a few days but i cant find anything

#5 PaoloPemi

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Posted 15 March 2019 - 05:23 AM

if you are not an expert in phase equilibria maybe you can ask someone to do the work...

do you mean nitration / sulfonation or similar processes ?

That is not easy to model, you should know well models, Binary Interaction Paramenters (BIps) etc..


Edited by PaoloPemi, 15 March 2019 - 05:30 AM.


#6 SadEngineer

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Posted 15 March 2019 - 07:26 AM

Thanks for your comments but i cant do it.I found some setting in fluid package and changed them.Binary coefficients parameters then gravity decanter/3 phase separator values are changed by aspen hysys but values not close real values. I searched but didnt find any data for decanter residues

#7 SoonEngineer

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Posted 09 April 2019 - 04:09 AM

Hello Engineers,
I need to separate liquid liquid mixture(organic and NaOH&Na2SO4) In aspen hysys,

I have tried but 3 phaseseparator did not separate them and all stream throuhput same location.
if there's anyone knows? Can anyone help me please?

The flow of NaOH and Na2SO4 is small actually


Edited by SoonEngineer, 09 April 2019 - 04:16 AM.





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