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Optimal temperature policies by distributed control for reactors with lhhw catalyst deactivation
Author(s) -
GonzalezVelasco Juan R.,
GutierrezOrtiz Miguel A.,
GutierrezOrtiz Jose I.,
GonzalezMarcos Jose A.
Publication year - 1987
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450650107
Subject(s) - parametrization (atmospheric modeling) , optimal control , control (management) , temperature control , control theory (sociology) , partial differential equation , state space , differential equation , computer science , materials science , mathematical optimization , mathematics , engineering , control engineering , physics , mathematical analysis , quantum mechanics , artificial intelligence , radiative transfer , statistics
Abstract An approximate procedure for solving the problem of temperature optimal control distributed in both space and time coordinates is presented. It is applied to chemical reactors suffering from catalyst decay whose model is described by a complex second order partial differential equation deduced from LHHW kinetics. The proposed algorithm uses a finite‐difference approximation method to solve the state equation, and the control vector parametrization technique to obtain the optimal control. Numerical examples are computed and the results obtained show that distributed control reaches significantly higher production than lumped control.