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Title

Syngas/H2 production from bioethanol in a continuous Chemical-Looping Reforming prototype

AuthorsGarcía Labiano, Francisco ; García-Díez, Enrique; Diego Poza, Luis F. de ; Serrano, A.; Abad Secades, Alberto ; Gayán Sanz, Pilar ; Adánez Elorza, Juan ; Ruiz, J.A.C.
KeywordsHydrogen
Chemical-looping reforming
Bioethanol
CO2 emissions
Issue DateSep-2015
PublisherElsevier
CitationFuel Processing Technology 137: 24-30 (2015)
AbstractChemical-looping reforming (CLR) allows H2 production without CO2 emissions into the atmosphere. The use of a renewable fuel, bioethanol, in an auto-thermal CLR process has the advantage to produce H2 with negative CO2 emissions. This work presents the experimental results obtained in a continuously operating CLR unit (1 kWth) using ethanol as fuel. Two NiO-based oxygen carriers were used during more than 50 h of operation. The influence of variables such as temperature, water-to-fuel and oxygen-to-fuel molar ratios was analysed. Full conversion of ethanol was accomplished and carbon formation was easily avoided. A syngas composed of ≈ 61 vol.% H2, ≈ 32 vol.% CO, ≈ 5 vol.% CO2 and ≈ 2 vol.% CH4 was reached at auto-thermal conditions for both materials. Gas composition was closed to the given by the thermodynamic equilibrium. These results demonstrate the technical viability of H2/syngas production by using bioethanol in an auto-thermal CLR process.
Publisher version (URL)http://dx.doi.org/10.1016/j.fuproc.2015.03.022
URIhttp://hdl.handle.net/10261/139972
DOI10.1016/j.fuproc.2015.03.022
ISSN0378-3820
Appears in Collections:(ICB) Artículos
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