Process Control

Hybrid Dynamic Optimisation: Case Study of a Pressure Swing Adsorption Process

S. Ayoub, M.A. Latifi
LSGC - ENSIC Nancy

Abstract

In this paper, a hybrid dynamic optimisation approach is developed for simulation of a pressure swing adsorption (PSA) process. The simulation problem which consists in the determination of the cyclic steady-state (CSS) is formulated as an optimisation problem where the performance index is the CSS condition, the decision variables are the state variables at the start of the cycle and the process model along with associated initial and boundary conditions gives the constraints. The necessary conditions of optimality for the hybrid dynamic system using the adjoint system method are derived and the gradients are computed for the non linear programming (NLP) solver used. The optimisation results are compared to those obtained with gradients computed by means of finite differences method.

Full paper

066.pdf

Session

Process Optimisation (Lecture)

Reference

Ayoub, S., Latifi, M.A.: Hybrid Dynamic Optimisation: Case Study of a Pressure Swing Adsorption Process. Editors: Fikar, M., Kvasnica, M., In Proceedings of the 17th International Conference on Process Control ’09, Štrbské Pleso, Slovakia, 93–100, 2009

BibTeX
@inProceedings{pc09-066,
author = {Ayoub, S. and Latifi, M.A.},
title = {Hybrid Dynamic Optimisation: Case Study of a Pressure Swing Adsorption Process},
booktitle = {Proceedings of the 17th International Conference on Process Control '09},
year = {2009},
pages = {93-100},
editor = {Fikar, M. and Kvasnica, M.},
address = {Štrbské Pleso, Slovakia},
publisher = {Slovak University of Technology in Bratislava},
url = {http://www.kirp.chtf.stuba.sk/pc09/data/papers/066.pdf}}
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