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Dynamic modeling and control of a coupled reforming/combustor system for the production of H2 via hydrocarbon-based fuels

Ipsakis Dimitrios, Damartzis Theodoros, Papadopoulou Simira, Voutetakis, Spyros

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URIhttp://purl.tuc.gr/dl/dias/5B3737C8-BD59-4A9B-8DD0-9792D9349A9D-
Identifierhttps://doi.org/10.3390/pr8101243-
Identifierhttps://www.mdpi.com/2227-9717/8/10/1243-
Languageen-
Extent18 pagesen
Extent3,69 megabytesen
TitleDynamic modeling and control of a coupled reforming/combustor system for the production of H2 via hydrocarbon-based fuelsen
CreatorIpsakis Dimitriosen
CreatorΙψακης Δημητριοςel
CreatorDamartzis Theodorosen
CreatorPapadopoulou Simiraen
CreatorVoutetakis, Spyrosen
PublisherMDPIen
Content SummaryThe 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.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2021-05-14-
Date of Publication2020-
SubjectHydrogen productionen
SubjectSteam reformingen
SubjectDynamic modelingen
SubjectPID controlen
SubjectDistributed control systemen
SubjectC1–C4 feedstocken
Bibliographic CitationD. Ipsakis, T. Damartzis, S. Papadopoulou, and S. Voutetakis, “Dynamic modeling and control of a coupled reforming/combustor system for the production of H2 via hydrocarbon-based fuels,” Processes, vol. 8, no. 10, Oct. 2020. doi: 10.3390/pr8101243en

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