Dynamics and control of autothermal reactors for the production of hydrogen

Michael Baldea, Prodromos Daoutidis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Autothermal reactors, coupling endothermic and exothermic reactions in parallel channels, represent one of the most promising technologies for hydrogen production. The bulk of existing research work concerning their operation refers, however, to steady-state conditions. In the present work, we analyze the dynamic behavior of autothermal reactors. We demonstrate that such systems are modeled by systems of equations that are stiff, their dynamics consequently featuring two time scales. Within the framework of singular perturbations, we derive reduced-order, non-stiff models for the transient evolution in each time scale, and draw an analogy between the rigorously derived model of the slow dynamics and widely-accepted empirical low order models used in the literature. Furthermore, we uncover some of the challenges posed by the transient operation of autothermal reactors, and demonstrate the implementation of feedback control to improve transient performance. All theoretical concepts are illustrated with numerical simulations performed using the model of a hydrogen production reactor.

Original languageEnglish (US)
Title of host publication2007 European Control Conference, ECC 2007
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5023-5028
Number of pages6
ISBN (Electronic)9783952417386
DOIs
StatePublished - 2007
Event2007 9th European Control Conference, ECC 2007 - Kos, Greece
Duration: Jul 2 2007Jul 5 2007

Publication series

Name2007 European Control Conference, ECC 2007

Other

Other2007 9th European Control Conference, ECC 2007
CountryGreece
CityKos
Period7/2/077/5/07

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