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Analysis of the lumped and distributed optimal temperature trajectories for packed bed reactors with concentration dependent catalyst deactivation
Author(s) -
GonzalezVelasco Juan R.,
GutierrezOrtiz Miguel A.,
GutierrezOrtiz Jose I.,
GonzalezMarcos Jose A.
Publication year - 1990
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.5450680517
Subject(s) - packed bed , trajectory , catalysis , temperature control , optimal control , control theory (sociology) , space velocity , maximum temperature , production (economics) , series (stratigraphy) , control (management) , process engineering , materials science , mechanics , chemistry , chemical engineering , computer science , thermodynamics , mathematical optimization , mathematics , physics , engineering , organic chemistry , geology , astronomy , selectivity , paleontology , macroeconomics , artificial intelligence , economics
Algorithms published previously by the authors for solving the problem of spatially uniform and non‐uniform temperature optimal control in tubular fixed bed reactors have been applied to three systems with series catalyst deactivation and different ratios between the activation energies of the main and deactivation reactions. The optimal temperature and conversion trajectories as well as the maximum production obtained have been compared at the same final duration of operation. Systems with slow deactivation obtain maximum production with spatially uniform control, whilst for systems with rapid deactivation the temperature trajectory distributed both in space and time improves the production obtained with lumped control.