dc.contributor.author | Zaabout, Abdelghafour | |
dc.contributor.author | Dahl, Paul Inge | |
dc.contributor.author | Ugwu, Ambrose | |
dc.contributor.author | Tolchard, Julian R | |
dc.contributor.author | Cloete, Schalk Willem Petrus | |
dc.contributor.author | Amini, Shahriar | |
dc.date.accessioned | 2019-09-17T07:38:54Z | |
dc.date.available | 2019-09-17T07:38:54Z | |
dc.date.created | 2019-01-14T20:40:35Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | International Journal of Greenhouse Gas Control. 2019, 81 170-180. | nb_NO |
dc.identifier.issn | 1750-5836 | |
dc.identifier.uri | http://hdl.handle.net/11250/2617113 | |
dc.description.abstract | The process behavior of a Gas Switching Reforming (GSR) reactor was studied using three different iron-based oxygen carrier materials: Iron-oxide on Alumina, Iron-Nickel oxide on Alumina and Iron-Ceria on Alumina. It was observed that, for all oxygen carriers, the fuel stage reaction occurs in two distinct sub-stages when feeding methane and steam to a bed of oxidized material, with methane combustion dominating the first and methane reforming dominating the second. This reflects a change in the catalytic activity of the oxygen carrier as it is reduced. The alumina support was observed to play a significant role in the reactions occurring, with the redox-active phases being hematite-structured Fe2O3 (oxidized form) and spinel-structured (FeNiAl)3O4 (reduced form).
The Nickel-containing oxygen carrier outperformed the others in the reforming sub-stage, showing 40% improved methane conversion. The feed of dry methane only during the combustion sub-stage was found to improve methane conversion to syngas in the subsequent reforming sub-stage from 75% to 80% at 800 °C. Results also show that methane conversion improves with the increase in operating temperature and steam/carbon ratio. Autothermal operation of the reactor was achieved with repeatable performance over several redox cycles. The study therefore successfully demonstrated autothermal N2-free syngas production with integrated CO2 capture from the fuel combustion required to supply heat to the endothermic reforming reactions. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Gas Switching Reforming (GSR) for syngas production with integrated CO2 capture using iron-based oxygen carriers | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 170-180 | nb_NO |
dc.source.volume | 81 | nb_NO |
dc.source.journal | International Journal of Greenhouse Gas Control | nb_NO |
dc.identifier.doi | 10.1016/j.ijggc.2018.12.027 | |
dc.identifier.cristin | 1656707 | |
dc.description.localcode | © 2019 The Authors. Published by Elsevier Ltd. Open Access CC BY-NC-ND 4.0 | nb_NO |
cristin.unitcode | 194,64,25,0 | |
cristin.unitname | Institutt for energi- og prosessteknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |