Modelling a distillation column?

Leslie

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Jun 19, 2001, 5:49:07 PM6/19/01

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Help! i would like to model a distillation column in simulink - and i
am willing to write the programming for all the mass and energy
calculations in a distillation column like any other chemical process
simulation program (ie Hysys, AspenPlus, Cadsim etc) however, this
would probably be rather difficult - if anyone can suggest an
alternative, and an easy way to implement a user interface for all the
input, or if someone can point me to a similar model in some simulink
reference i would be grateful...i have no idea how to go about this
massive feat and i am trying to do this without linking to the other
programs...purely simulink...

also, one other question is, if i mask a subsystem that includes a PID
controller? how do i get the masked block parameters to be connected
to the parameters of the PID? (ie in the masked block have
P,I,D,Tsp,etc...show up and linked properly?)

thanx!:)

Robert Jay Brendel

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Jun 19, 2001, 6:32:40 PM6/19/01

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In article <0thdlp...@forum.mathforum.com>,

Leslie <lesl...@canada.com> wrote:
>Help! i would like to model a distillation column in simulink - and i
>am willing to write the programming for all the mass and energy
>calculations in a distillation column like any other chemical process
>simulation program (ie Hysys, AspenPlus, Cadsim etc) however, this
>would probably be rather difficult - if anyone can suggest an
>alternative, and an easy way to implement a user interface for all the
>input, or if someone can point me to a similar model in some simulink
>reference i would be grateful...i have no idea how to go about this
>massive feat and i am trying to do this without linking to the other
>programs...purely simulink...

A good starting point might be the Matlab/Simulink files created by Sigurd
Skogestad and posted on his site. He also has there several papers on
dynamics and control of distillation columns that use those files -- very
useful info. They're simple binary columns with ideal VLE, but they
demonstrate the concepts. Sigurd's one of the best this profession has, in
my opinion (which ain't worth much, I admit).

Here's a link: http://www.chembio.ntu.no/~skoge/distillation/

Good luck,
Rob

Robert Jay Brendel

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Jun 19, 2001, 6:36:58 PM6/19/01

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http://www.chembio.ntnu.no/~skoge/distillation

Kelvin Hales

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Jul 10, 2001, 4:28:54 AM7/10/01

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In this type of modelling you have two choices about the thermodynamic
and transport properties:
o Write your own calculations, based on equation-of-state & other
models.
o Link to a thermodynamics and physical properties package (as does
Hysys, Aspenplus, gPROMS, etc.)

If you decide to go down the second route, you may want to check out our
own Multiflash for MATLAB product, which provides MATLAB/Simulink access
to Infochem's popular independent Multiflash product. This essentially
provides MATLAB/Simulink with similar thermophysprops capabilities as
the mainstream ChemEng simulation packages.
See <http://www.khace.com/products/multiflash>.

Kelvin B. Hales
Kelvin Hales Associates Limited
Consulting Process Control Engineers
E-mail: kha...@khace.com
Web: www.khace.com

zemin Feng

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Nov 16, 2016, 8:49:09 AM11/16/16

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Kelvin Hales <kha...@khales.cix.co.uk> wrote in message <VA.000009b...@khales.cix.co.uk>...

Dear
i want to use matlab program to simulation distillation process. can you tell me how i can connect multiflash and matlab?
thanks!