Steps for Successful Process Simulation

[consul]

Greetings!

I need a good article on the subject
"Steps for Successful Process Simulation".
Does anyone have this in his/her possession?

Any helpful reference will do. Online resources
are very much welcome.

Thanks.

Allan
Computer Applications in Chemical Engineering
More info? checomp_info@webmailstation.com


Allan S. Hugo
allanh@engineer.com

http://www.geocities.com/che_comp/index.html

For info: checomp_info@webmailstation.com

 

Hi Allan,
Am a persian petroleum process eng.from Iran.
Check this out.
PROCESS MODELING, SIMULATION, AND CONTROL FOR CHEMICAL ENGINEERS.
WILLIAM L. LUYBEN.
McGraw-Hill

yours,
Amir Khojasteh.

 

[consul]

Thanks for the book suggestion Net_guy. I have taken note of it. Bill Luyben got it covered then. I will consult his book. I think we got that one in the library.

Allan S. Hugo
allanh@engineer.com

http://www.geocities.com/che_comp/index.html

For info: checomp_info@webmailstation.com

 

[franky]

Well, this is depending of your software. When I built a simulation with
Cadsim with coach ver 1.1 I have to built my model step by step. The
initial value has to be good, otherwise it will take more time to converge
and arrive to the final value.

On the other hand when we use Massbal version 3.8 it converge more easily
and I could make a larger model and converge to the final value.

The important step to keep in mind is how complex the model is and if
your software could handle it easily. The approximation method that you
choose and the initial value are also an important aspect of this.

Now, once you know the software, then you have to know the process. We
always learn on that matter.

When you start from scratch your project:

1) keep your first model as simple as possible to converge to know values
or approximations.
2) Add to the model step by step and chekc if the results are still ok.
3) Keep copy of the differents models so if your model diverge, you will be
able to return to the last model
4) Once the model is complete and converge to satisfying value, do a manuel
check of all the values (mass balance or energy balance to by sure that the
software has the right value (never pass this stage, we experience some
problems due to the software stability on some projects)
5) Experiment different scenario as the process conditions will evolve in
the plant.

For the last point, you should cooperate closely with the client to be sure
all possible situations are simulate (the time spent on a simulation
compare to a loss in production, damage to equipments or possible injuries
is more valuable)

In any case, it's always preferrable to check what we know will be the
situation then having a surprise on the startup.

Here are some articles on process simulation that I think will help you

NOT ENOUGH DATA FOR A SIMULATION?

http://63.66.209.158/cgi-bin/view?UserTicket=Open&file=CE-095-10-0106

PROCESS SIMULATION: THE ART AND SCIENCE OF MODELING

http://63.66.209.158/cgi-bin/view?UserTicket=Open&file=CE-101-11-0140

SIMULATION AND PROCESS CONTROL

http://63.66.209.158/cgi-bin/view?UserTicket=Open&file=CE-096-02-0115

PROCESS SIMULATION -- HAVING IT YOUR WAY

http://63.66.209.158/cgi-bin/view?UserTicket=Open&file=CE-104-04-0154

ACCELERATING INTEREST IN DYNAMIC SIMULATION

http://63.66.209.158/cgi-bin/view?UserTicket=Open&file=CE-096-02-0100

If you need more informations, it will be a pleasure to help on the
subject.

Frank

 

You will find a couple of articles on the aspen-tech website

http://www.aspentech.com.

One of them - 'Don't Gamble with Physical Properties for Simulations' actually take you throuh a step by step process of defining the thermo in the simulations.
Hope this helps.

 

Need to define success. Let's say success =
1) sufficient accuracy for design
2) cost within budget
3) time within schedule

Software to use:
1) is there a company standard in place?
2) can my budget afford the cost of leasing the software?
3) does my schedule have time to acquire and learn the tools?
4) does the software have existing models for the operations I have to simulate?
5) do my budget and schedule allow for these to be developed if not?
6) does the software have the thermo properties for the materials in my simulation?
7) do my budget and schedule allow for these to be developed if not?

 

[consul]

Thanks for the tips rclingan.

It somehow opens a "new dimension" especially on cost consideration.

I have fully taken note of your suggestions.
The rest of you guys, I really appreciate your help too.

By the way, for process simulation softwares, I have
compiled a list at this URL:

http://www.che-comp.org/egroup/pslink.html

Thanks again,

Sincerely,

Allan S. Hugo
allanh@engineer.com

http://www.geocities.com/che_comp/index.html

For info: checomp_info@webmailstation.com

 

[visitor]

Have a look at

http://www.hyprotech.com

as well.