112012 20240319080949.0 doi 10.3390/en15041499 sideral 127729 ART-2022-127729 eng Royo, Javier Universidad de Zaragoza (orcid)0000-0003-4631-6994 Ash Behaviour during Combustion of Agropellets Produced by an Agro-Industry—Part 2: Chemical Characterization of Sintering and Deposition 2022 Access copy available to the general public Unrestricted Eight different pellets (one woody and seven blends of woody and herbaceous biomass) produced by an agro-industry were tested in a fixed-bed reactor to characterize their behaviour during their combustion process. The objective was to analyze the possible problems that could arise and, thus, achieve advances in the greater penetration of these agropellets in the energy market. The blends’ design and tests results are presented in the first part of this article. The results of the bottom ash and fly ash samples obtained from the combustion tests using SEM-EDS and P-XRD techniques were analyzed in order to delve into the sintering and deposition phenomena, respectively. Regarding the sintering, a clear relationship has been found between the results of the SEM-EDS analysis and the initial composition of the ash of the fuels. Additionally, the analysis of the results confirms a different ash behaviour regarding the sintering phenomenon depending on the ratio between the amounts of Si, Ca + Mg and K + Na. With respect to deposition, it has been determined that in woody pellets, showing the lower sintering degree, the predominant deposition mechanism is by inertial impact, while in blend pellets it is by condensation, which increases when the percentage of herbaceous in the mixture increases. It has been proved that, in order to compensate (at least partially) for the negative effect of the herbaceous components in the blends, working with a higher λ value is interesting, as it achieves a decrease in the combustion temperature (with λ >1), which implies both a decrease in the sintering degree and in the deposition, improving therefore the ash behaviour in the combustion of agropellets. info:eu-repo/grantAgreement/EC/H2020/727961/EU/Demonstration of innovative integrated biomass logistics centres for the Agro-industry sector in Europe/AGROinLOG This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 727961-AGROinLOG info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.2 2022 ENERGY & FUELS 80 / 119 = 0.672 2022 Q3 T3 0.632 2022 Engineering (miscellaneous) 2022 Q1 Electrical and Electronic Engineering 2022 Q2 Energy (miscellaneous) 2022 Q2 Renewable Energy, Sustainability and the Environment 2022 Q2 Fuel Technology 2022 Q2 Control and Optimization 2022 Q2 Energy Engineering and Power Technology 2022 Q2 5.5 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Canalís, Paula Universidad de Zaragoza (orcid)0000-0002-5037-7047 Zapata, Sebastián Gómez, Maider Bartolomé, Carmen (orcid)0000-0002-6210-1099 5004 545 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Ingeniería Mecánica 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 15, 4 (2022), 1499 [20 pp.] ENERGIES Energies 1996-1073 8655532 http://zaguan.unizar.es/record/112012/files/texto_completo.pdf Versión publicada 2783434 http://zaguan.unizar.es/record/112012/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:112012 articulos driver 2024-03-18-12:53:19 ARTICLE