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Biomass Chemical Looping Gasification of pine wood using a synthetic Fe2O3/Al2O3 oxygen carrier in a continuous unit

AuthorsSamprón, Iván; Diego Poza, Luis F. de ; García Labiano, Francisco ; Izquierdo Pantoja, María Teresa ; Abad Secades, Alberto ; Adánez Elorza, Juan
Chemical-looping gasification
Issue Date27-Jul-2020
CitationBioresource Technology 316: 123908 (2020)
AbstractBiomass Chemical Looping Gasification is a novel technology allowing high quality syngas production at autothermal conditions without CO2 emissions to the atmosphere and low tar generation. This work compiles gasification results corresponding to 38 h of continuous operation in a 1.5 kWth unit using pine wood as fuel and a synthetic Fe-based oxygen carrier, Fe20Al. The main operating conditions such as temperature (T = 820–940 °C), steam-to-biomass ratio (S/B = 0.05–0.65), and oxygen-to-biomass ratio (λ = 0.2–0.6) were analyzed at steady state conditions using a novel method for controlling oxygen in the process. A syngas composed by 37% H2, 21% CO, 34% CO2 and 7% CH4, and tars below 2 g/Nm3 could be obtained at autothermal conditions, leading to a syngas yield of 0.8 Nm3/kg dry biomass and a cold gas efficiency of 68%. The material maintained a high reactivity although some Fe lost was observed.
Description6 figures, 1 table.-- © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher version (URL)http://dx.doi.org/10.1016/j.biortech.2020.123908
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