Steam Net Simulation at Borealis' Cracker Site in

Stenungsund

Presentation at Nordic Process Control Workshop 15, Porsgrunn

29 January 2009Veronica Olesen

Solvina

Göteborg

Västerås

•Power Engineering •Process Engineering•Automatic Control •Chemical Engineering •Computer Technology •Mathematics •Nuclear Power Safety

•Power Engineering •Process Engineering•Automatic Control •Chemical Engineering •Computer Technology •Mathematics •Nuclear Power Safety

Solvina

Borealis Stenungsund

Borealis Stenungsund

Ethylene

HP steam

LP steam from LD5

New

Cracker Steam NetFrom production

Boilers

To PE

To processesDump

HP

MP

LP

From LD5

NewNew

Trip of LD5From production

Boilers

To PE

To processesDump

From LD5

Trip of LD5From production

Boilers

To PE

To processesDump

From LD5

Trip of LD5From production

Boilers

To PE

To processesDump

From LD5

?

?

?

Major pressure drops

Pressure ControlFrom production

Boilers

To PE

To processesDump

From LD5

Findings• Restrictions necessary on the PE site to

slow down the course of events.

Findings• Restrictions necessary on the PE site to

slow down the course of events.• Use the same measuring point for all

control loops in the LP net.

PI PIPI

Findings• Restrictions necessary on the PE site to

slow down the course of events.• Use the same measuring point for all

control loops in the LP net.• Feed forward needed in boiler control

Accep

tab

le p

ressu

re

ran

ge

t0

Findings• Restrictions necessary on the PE site to

slow down the course of events.• Use the same measuring point for all

control loops in the LP net.• Feed forward needed in boiler control• Dynamic simulations necessary prior to

mayor changes.

Thank you for listening

Questions?

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