English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/184875
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Complete Ca/Cu cycle for H2 production via CH4 sorption enhanced reforming in a Lab-Scale fixed bed reactor

AuthorsDíez-Martín, Laura; López Sebastián, José Manuel ; Fernández García, José Ramón ; Martínez Berges, Isabel; Grasa Adiego, Gemma ; Murillo Villuendas, Ramón
KeywordsCH4 sorption enhanced reforming
Fixed bed reactor
Pressurized H2 production
Ca/Cu cycle
CO2 capture
Issue Date15-Jun-2018
PublisherElsevier
CitationChemical Engineering Journal 350: 1010-1021 (2018)
AbstractThe three main reaction stages of a H2 production process based on the combination of the CaO/CaCO3 and Cu/CuO loops have been experimentally studied in a lab scale fixed bed reactor. The solid bed contained the three functional materials required to run the process, namely a commercial Ni-based catalyst, a CaO-Ca12Al14O33 CO2 sorbent and a CuO-Al2O3 material in a proportion that resulted in a bed with 43.3% wt. CuO, 25.6% wt. CaO and 1.7% wt. Ni. The system was able to convert 13.5 kg CH4 h−1 kg Ni−1, at 675 °C producing a gas stream with a 93.5% vol. H2 at 10 bar. The Cu-based material presented high oxidation kinetics, being totally converted in a narrow reaction front with a highly diluted air stream at 10 bar. The Cu-based material presented also fast reduction kinetics and it was completely converted with a fuel gas with typical composition of a Steam Methane Reforming stage at high temperature. A Cu/Ca molar ratio of 2 allowed for calcination efficiencies over 85% molar basis at the CO and H2 break-through, and 95% of the CO2 from CaCO3 exited the reactor at CH4 break-through. The experimental results have been validated with an existing pseudo homogeneous reactor model that had been developed in previous works for the three reaction stages. The model was able to predict product gas compositions, bed breakthrough, and temperature profiles along bed.
Description7 Figuras.- 2 Tablas
URIhttp://hdl.handle.net/10261/184875
Identifiersdoi: 10.1016/j.cej.2018.06.049
issn: 1385-8947
Appears in Collections:(INCAR) Artículos
(ICB) Artículos
Files in This Item:
File Description SizeFormat 
CEJ_v350_1010-1021_2018.pdf Embargoed until June 15, 2020Artículo principal696,61 kBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.