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Distillation Simulink

#simulink #distillation #processcontrol #pid

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#1 Dcoz


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Posted 26 April 2021 - 10:13 AM

Hello Dear Chemical Engineering community,


We are currently designing the simulink control for a distillation column, and attached below is what we have done so far.


We implemented feedback control. The problems is that we generated 4 PID controllers (two for the reflux and two for the reboiler) yet are required to only use 2 PIDs, so my question is how do we 'fuse' two PID controllers into one.


Any other comments or suggestions are highly appreciated.


Thank you



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#2 Pilesar


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Posted 26 April 2021 - 08:51 PM

I am not expert at what you are doing (and am not sure I even understand what you are doing), but consider using a weighted sum of the changes calculated by both controllers.

#3 breizh


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Posted 26 April 2021 - 09:45 PM


Not sure I understand your query . I added documents about Distillation towers and control . You may submit a simple PFD/PID for us to visualize your problem with sensors ,controllers and links between them .

My view


#4 horatorres


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Posted 27 April 2021 - 08:31 AM



It is not possible to understand what are you doing without a P&ID   or the control loop drawing




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