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Demonstration of non-linear model predictive control of post-combustion CO2 capture processes

Abstract

Nonlinear model predictive control applications have been deployed on two large pilot plants for post combustion CO2 capture. The control objective is formulated in such a way that the CO2 capture ratio is controlled at a desired value, while the reboiler duty is formulated as an unreachable maximum constraint. With a correct tuning, it is demonstrated that the controllers automatically compensate for disturbances in flue gas rates and compositions to obtain the desired capture ratio while the reboiler duty is minimized. The applications are able to minimize the transient periods between two different capture rates with the use of minimum reboiler duty.
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Category

Academic article

Language

English

Author(s)

Affiliation

  • SINTEF Industry / Process Technology
  • Norwegian University of Science and Technology
  • Diverse norske bedrifter og organisasjoner

Year

2019

Published in

Computers and Chemical Engineering

ISSN

0098-1354

Volume

123

Page(s)

184 - 195

View this publication at Norwegian Research Information Repository