Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Calibration of a polyethylene plant for grade change optimisations

Publiceringsår: 2011
Språk: Engelska
Sidor: 673-677
Publikation/Tidskrift/Serie: 21ST European Symposium on Computer Aided Process Engineering
Volym: 29
Dokumenttyp: Konferensbidrag
Förlag: Elsevier


A polyethylene plant model coded in Modelica and based on a nonlinear MPC model currently used at Borealis AB is considered for calibration. A case study of model calibration at steady-state for four different operating points are analysed, both when looking at one operating point separately, but also to calibrate several simultaneously. Both model parameters and reactor inputs are calibrated for true plant measurement data. To solve the parameter estimation problem, the platform is used, offering tools to express and solve calibration problems. Calibration was obtained with narrow confidence intervals and shows a potential to improve the model accuracy by changing the parameter values. The results will be used for dynamic optimisations of grade changes.


  • Chemical Engineering
  • Control Engineering
  • Calibration
  • Modelica
  • grade change
  • cheical industry
  • polymerisation


21st European Symposium on Computer Aided Process Engineering, 2011
  • LCCC-lup-obsolete
  • ISSN: 1570-7946
  • ISBN: 978-0-444-53895-6

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen