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Modeling and upscaling of a pilot bayonettube reactor for indirect solar mixed methane reforming

  • A 16.77 kW thermal power bayonet-tube reactor for the mixed reforming of methane using solar energy has been designed and modeled. A test bench for the experimental tests has been installed at the Synlight facility in Juelich, Germany and has just been commissioned. This paper presents the solar-heated reactor design for a combined steam and dry reforming as well as a scaled-up process simulation of a solar reforming plant for methanol production. Solar power towers are capable of providing large amounts of heat to drive high-endothermic reactions, and their integration with thermochemical processes shows a promising future. In the designed bayonet-tube reactor, the conventional burner arrangement for the combustion of natural gas has been substituted by a continuous 930 °C hot air stream, provided by means of a solar heated air receiver, a ceramic thermal storage and an auxiliary firing system. Inside the solar-heated reactor, the heat is transferred by means of convective mechanism mainly; instead of radiation mechanism as typically prevailing in fossil-based industrial reforming processes. A scaled-up solar reforming plant of 50.5 MWth was designed and simulated in Dymola® and AspenPlus®. In comparison to a fossil-based industrial reforming process of the same thermal capacity, a solar reforming plant with thermal storage promises a reduction up to 57 % of annual natural gas consumption in regions with annual DNI-value of 2349 kWh/m2. The benchmark solar reforming plant contributes to a CO2 avoidance of approx. 79 kilotons per year. This facility can produce a nominal output of 734.4 t of synthesis gas and out of this 530 t of methanol a day.

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Metadaten
Verfasserangaben:Carlos Rendon, Christian SchwagerORCiD, Mona Ghiasi, Pascal SchmitzORCiD, Fakhri Bohang, Ricardo Alexander Chico Caminos, Cristiano José Teixeira BouraORCiD, Ulf HerrmannORCiD
DOI:https://doi.org/10.1063/5.0029974
Titel des übergeordneten Werkes (Englisch):AIP Conference Proceedings
Dokumentart:Konferenzveröffentlichung
Sprache:Englisch
Erscheinungsjahr:2020
Datum der Publikation (Server):06.01.2021
Ausgabe / Heft:2303
Erste Seite:170012-1
Letzte Seite:170012-9
Bemerkung:
SOLARPACES 2019: International Conference on Concentrating Solar Power and Chemical Energy Systems, 1–4 October 2019, Daegu, South Korea
Link:https://doi.org/10.1063/5.0029974
Zugriffsart:campus
Fachbereiche und Einrichtungen:FH Aachen / Fachbereich Energietechnik
FH Aachen / Solar-Institut Jülich