000136010 001__ 136010
000136010 005__ 20240705134228.0
000136010 0247_ $$2doi$$a10.1021/acs.energyfuels.4c00942
000136010 0248_ $$2sideral$$a139004
000136010 037__ $$aART-2024-139004
000136010 041__ $$aeng
000136010 100__ $$aMaziarka, Przemyslaw
000136010 245__ $$aPart 2 - Tailoring of pylolytic char properties with a single particle CFD model with a focus on the impact of shrinking, vapor cracking, and char permeability
000136010 260__ $$c2024
000136010 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136010 5203_ $$aThe prediction of the structural properties of biobased carbonaceous materials of pyrolytic origin (chars) with only base feedstock properties and process conditions still poses a challenge that hinders char tailoring for novel applications. CFD modeling of single biomass particle conversion can help solve this issue since it allows for the quantification of relations between parameters that are difficult to measure. A model for char tailoring must include a validated representation of the structural changes coupled to all other relevant phenomena occurring during conversion. Part 2 of this study focuses on finding the description of the mentioned aspects to achieve the highest precision of prediction of the structural changes in char by a CFD model. The investigation in Part 2 is composed of three cases focused on accurate description and prediction of (1) bulk density and porosity, (2) secondary vapor reactions on yields and soot formation, and (3) permeability, as well as the outflux and conversion of evolved vapors. The experimental results from Part 1 and the literature data were used to find appropriate descriptions of phenomena and assess the accuracy of the model. The model results indicate that for both particle lengths (10 and 16 mm), a high accuracy of prediction of base structural parameters was achieved. The average prediction error for temperatures between 400 and 840 °C of bulk density was 31 ± 15 kg/m3, and the porosity was 1.8 ± 1.1 vol %. The results also show a low error in the prediction of bulk product yields (dry basis) over the mentioned temperature range, which were: for char 2.8 ± 1.1 wt %, for the condensable fraction 6.5 ± 3.3 wt %, and for the pyrolysis gas 4.1 ± 1.9 wt %. The distribution of secondary char formation was found to be nonuniform below 500 °C. The changes in permeability had a minor influence on the vapor outflux but a non-negligible effect on the soot formation, especially at 840 °C. The results indicate a need for further improvement of the primary degradation model to increase the accuracy of the effect of soot formation on the char structure.
000136010 536__ $$9info:eu-repo/grantAgreement/EC/H2020/721991/EU/Advanced Carbon Materials from Biowaste: Sustainable Pathways to Drive Innovative Green Technologies/ GreenCarbon$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 721991- GreenCarbon$$9info:eu-repo/grantAgreement/EC/H2020/731101/EU/ Biofuels Research Infrastructure for Sharing Knowledge II/BRISK II$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 731101-BRISK II
000136010 540__ $$9info:eu-repo/semantics/embargoedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000136010 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000136010 700__ $$aKienz, Norbert
000136010 700__ $$aDieguez-Alonso, Alba
000136010 700__ $$aPrins, Wolter
000136010 700__ $$aArauzo, Pablo J.
000136010 700__ $$aSkreiberg, Øyvind
000136010 700__ $$aAnca-Couce, Andrés
000136010 700__ $$0(orcid)0000-0002-0118-3254$$aManyà, Joan J.$$uUniversidad de Zaragoza
000136010 700__ $$aRonsse, Frederik
000136010 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000136010 773__ $$g38, 11 (2024), 9772–9793$$pSustain. energy fuels$$tSustainable Energy & Fuels$$x2398-4902
000136010 8564_ $$s1255936$$uhttps://zaguan.unizar.es/record/136010/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-05-25
000136010 8564_ $$s947921$$uhttps://zaguan.unizar.es/record/136010/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-05-25
000136010 909CO $$ooai:zaguan.unizar.es:136010$$particulos$$pdriver
000136010 951__ $$a2024-07-05-12:56:11
000136010 980__ $$aARTICLE