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Methanation Pilot Plant with a Slurry Bubble Column Reactor: Setup and First Experimental Results

Sauerschell, Simon 1; Bajohr, Siegfried 1; Kolb, Thomas 1
1 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)


As a part of various research projects, a methanation pilot plant with a slurry bubble column reactor (SBCR) was commissioned and operated. The plant has a nominal load of a 100 kW methane output (lower calorific value) with a reactor diameter of 260 mm and a reactor length of 2500 mm. First experimental data on the steady-state and dynamic operation of catalytic CO2 methanation are presented. Steady-state results from laboratory-scale studies (<1 kW methane output) published previously were confirmed qualitatively at the pilot plant eliminating wall effects unavoidable in small-scale reactors. As predicted, high H2/CO2 ratios increase CO2 conversion, but excess H2 apparently promotes decomposition of the liquid phase (dibenzyltoluene) used in the bubble column reactor. Additionally, due to the increased reactor dimensions compared to laboratory equipment, it was now possible to observe a thermal response of the SBCR under conditions of rapid gas load changes characteristic of envisaged power-to-gas applications with volatile renewable electricity. As the predicted robustness of the SBCR-concept toward a dynamic operation with fast load changes was demonstrated successfully, it offers an attractive alternative to the established fixed-bed methanation technologies with their inherent limitations on dynamic operability.

Verlagsausgabe §
DOI: 10.5445/IR/1000148877
Veröffentlicht am 21.07.2022
DOI: 10.1021/acs.energyfuels.2c00655
Zitationen: 4
Web of Science
Zitationen: 3
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Institut für Technische Chemie (ITC)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 07.07.2022
Sprache Englisch
Identifikator ISSN: 0887-0624, 1520-5029
KITopen-ID: 1000148877
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Erschienen in Energy & Fuels
Verlag American Chemical Society (ACS)
Band 36
Heft 13
Seiten 7166–7176
Vorab online veröffentlicht am 08.06.2022
Nachgewiesen in Scopus
Web of Science
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