2014
DOI: 10.1002/aic.14527
|View full text |Cite
|
Sign up to set email alerts
|

Kinetic parameter estimation of HDPE slurry process from molecular weight distribution: Estimability analysis and multistep methodology

Abstract: This study addresses kinetic parameter estimation for a high-density polyethylene (HDPE) slurry process based on fitting molecular weight distributions (MWDs). From the process model, we conduct an estimability analysis by assessing the relative sensitivity between output variables and kinetic parameters as well as confidence intervals. This determines which parameters can be estimated. Conversely, a major challenge remains with the solution of an ill-conditioned parameter estimation problem with MWD as the ou… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

0
31
0

Year Published

2015
2015
2023
2023

Publication Types

Select...
5
1

Relationship

2
4

Authors

Journals

citations
Cited by 22 publications
(31 citation statements)
references
References 33 publications
0
31
0
Order By: Relevance
“…[15][16][17][18] Several PE modeling studies focused on the estimation of kinetic parameters for ethylene homo-polymerization, which is a simpler problem than parameter estimation in copolymerization systems. [19][20][21][22][23][24][25] Determining suitable kinetic parameters is more challenging in copolymerization systems due to additional parameters. Another major challenge in modeling ethylene/olefin copolymerization systems is in accounting for ethylene and comonomer sorption in the amorphous polymer near the catalyst sites.…”
Section: Introductionmentioning
confidence: 99%
“…[15][16][17][18] Several PE modeling studies focused on the estimation of kinetic parameters for ethylene homo-polymerization, which is a simpler problem than parameter estimation in copolymerization systems. [19][20][21][22][23][24][25] Determining suitable kinetic parameters is more challenging in copolymerization systems due to additional parameters. Another major challenge in modeling ethylene/olefin copolymerization systems is in accounting for ethylene and comonomer sorption in the amorphous polymer near the catalyst sites.…”
Section: Introductionmentioning
confidence: 99%
“…High-density polyethylene (HDPE) is one of the most widely used synthetic commodity polymers due to its low production cost and versatility in mechanical and rheological properties. 23 Continuous slurry polymerization with heterogeneous Ziegler-Natta catalysts is an important industrial process for HDPE production, in which polymer grows at the active sites on the catalyst until chain transfer occurs, thus forming dead polymer chains. 24 An HDPE slurry process is studied in this project, which takes place in a continuous stirred tank reactor (CSTR).…”
Section: Model Developmentmentioning
confidence: 99%
“…As this complex EOS model is difficult to solve by the EO approach, a set of surrogate kriging models, based on the data generated from PC‐SAFT EOS, was applied from our previous work . Phase equilibrium, mass and energy equations were also incorporated from our previous work . The kinetics and MWD models are presented next.…”
Section: Model Developmentmentioning
confidence: 99%
“…The polymer slurry streams leaving the two CSTRs are mixed and flow into the centrifugal separator. In our previous work, models of these two configurations were validated using multiple plant datasets from HDPE grades produced in an industrial HDPE slurry process.…”
Section: Model Developmentmentioning
confidence: 99%