LAPSE:2021.0235
Published Article
LAPSE:2021.0235
Dynamic Modeling and Control of a Coupled Reforming/Combustor System for the Production of H2 via Hydrocarbon-Based Fuels
April 27, 2021
The present work aims to provide insights into the dynamic operation of a coupled reformer/combustion unit that can utilize a variety of saturated hydrocarbons (HCs) with 1−4 C atoms towards H2 production (along with CO2). Within this concept, a preselected HC-based feedstock enters a steam reforming reactor for the production of H2 via a series of catalytic reactions, whereas a sequential postprocessing unit (water gas shift reactor) is then utilized to increase H2 purity and minimize CO. The core unit of the overall system is the combustor that is coupled with the reformer reactor and continuously provides heat (a) for sustaining the prevailing endothermic reforming reactions and (b) for the process feed streams. The dynamic model as it is initially developed, consists of ordinary differential equations that capture the main physicochemical phenomena taking place at each subsystem (energy and mass balances) and is compared against available thermodynamic data (temperature and concentration). Further on, a distributed control scheme based on PID (Proportional−Integral−Derivative) controllers (each one tuned via Ziegler−Nichols/Z-N methodology) is applied and a set of case studies is formulated. The aim of the control scheme is to maintain the selected process-controlled variables within their predefined set-points, despite the emergence of sudden disturbances. It was revealed that the accurately tuned controllers lead to (a) a quick start-up operation, (b) minimum overshoot (especially regarding the sensitive reactor temperature), (c) zero offset from the desired operating set-points, and (d) quick settling during disturbance emergence.
Keywords
C1–C4 feedstock, distributed control system, Dynamic Modelling, hydrogen production, PID control, Steam Reforming
Suggested Citation
Ipsakis D, Damartzis T, Papadopoulou S, Voutetakis S. Dynamic Modeling and Control of a Coupled Reforming/Combustor System for the Production of H2 via Hydrocarbon-Based Fuels. (2021). LAPSE:2021.0235
Author Affiliations
Ipsakis D: Industrial, Energy and Environmental Systems Lab (IEESL), School of Production Engineering and Management, Technical University of Crete, 73100 Chania, Greece [ORCID]
Damartzis T: Industrial Process and Energy Systems Engineering (IPESE), École Polytechnique Fédérale de Lausanne (EPFL), 1951 Sion, Switzerland [ORCID]
Papadopoulou S: Department of Industrial Engineering and Management, International Hellenic University, 54700 Thessaloniki, Greece; Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001 Thermi-Thessaloniki, Gree [ORCID]
Voutetakis S: Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 57001 Thermi-Thessaloniki, Greece [ORCID]
Journal Name
Processes
Volume
8
Issue
10
Article Number
E1243
Year
2020
Publication Date
2020-10-02
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8101243, Publication Type: Journal Article
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LAPSE:2021.0235
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doi:10.3390/pr8101243
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Apr 27, 2021
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CC BY 4.0
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[v1] (Original Submission)
Apr 27, 2021
 
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Apr 27, 2021
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Original Submitter
Calvin Tsay
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