(95b) Real Time Optimal Control and State Estimation in Semi-Batch Free-Radical Polymerization Reactors
AIChE Spring Meeting and Global Congress on Process Safety
2017
2017 Spring Meeting and 13th Global Congress on Process Safety
Fuels and Petrochemicals Division
Process Control Developments in Petrochemicals II
Tuesday, March 28, 2017 - 10:45am to 11:15am
In this study, a validated nonlinear dynamic process model is combined with a discrete-time extended Kalman filter (DEKF) and a feedback controller. The DEKF is employed to improve the accuracy of the measurements and compute a full state estimation while the controller regulates the flow of monomer/initiator to follow an optimal trajectory. As it is known, the efficiency and stability of a DEKF depends highly on the proper tuning of its parameters. Therefore, in this work a novel approach for improving the performance and stability of the DEKF is presented. The filter free parameters, which are the covariance matrix of the process, covariance matrix of the noise and error covariance of the initial states, are tuned by using a metaheuristic stochastic global optimization technique.
The feasibility of the approach was validated using a fully automated pilot scale experimental unit linked with ACOMP and a tailor made filter/controller module for on-line state estimation and optimal control. The free-radical polymerization reactions for synthetizing poly-acrylamide using KPS as initiator was utilized as case study. Results illustrate excellent performance and robustness of the filter and controller for achieving the optimal trajectory. Furthermore, real-time MMD is monitored using the DEKF state estimation.
Checkout
This paper has an Extended Abstract file available; you must purchase the conference proceedings to access it.
Do you already own this?
Log In for instructions on accessing this content.
Pricing
Individuals
2017 Spring Meeting and 13th Global Congress on Process Safety
AIChE Pro Members | $150.00 |
AIChE Graduate Student Members | Free |
AIChE Undergraduate Student Members | Free |
AIChE Explorer Members | $225.00 |
Non-Members | $225.00 |
Fuels and Petrochemicals Division only
AIChE Pro Members | $100.00 |
Fuels and Petrochemicals Division Members | Free |
AIChE Graduate Student Members | Free |
AIChE Undergraduate Student Members | Free |
AIChE Explorer Members | $150.00 |
Non-Members | $150.00 |