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Structural features and gasification reactivity of biomass chars pyrolyzed in different atmospheres at high temperature
University of Science and Technology Beijing, China.
University of Science and Technology Beijing, China.
University of Science and Technology Beijing, China.
University of Science and Technology Beijing, China.
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2018 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 147, p. 25-35Article in journal (Refereed) Published
Abstract [en]

The purpose of this study was to investigate the gasification properties of biomass chars obtained under different conditions by using non-isotherm thermogravimetric method. The physical and chemical structure features were also systematically studied. It shows that the gasification reactivities decrease with increasing pyrolysis temperature, and the gasification reactivities for the chars obtained under different atmosphere conditions are in the order of N2 char > CO2 char > CO char > H2 char. The gasification reactivities of the chars are mostly depend on the carbonaceous structure. Three nth-order represented gas-solid models, i.e. Random pore model (RPM), Unreaction core model (URCM) and Volumetric model (VM), were used to describe the reactive behaviors, and it indicates that the RPM is more suitable than the other two models.

Place, publisher, year, edition, pages
2018. Vol. 147, p. 25-35
Keywords [en]
Char structure, Gasification, Pyrolysis atmosphere, Metal cladding, Pyrolysis, Carbonaceous structure, Gasification reactivity, Pyrolysis temperature, Reactive behavior, Structural feature, Thermogravimetric method, Volumetric modeling, biochar, biomass, high temperature, model validation, physicochemical property, thermogravimetry
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-33229DOI: 10.1016/j.energy.2018.01.025Scopus ID: 2-s2.0-85040362995OAI: oai:DiVA.org:ri-33229DiVA, id: diva2:1182135
Note

 Funding details: 2017QNRC001; Funding details: 2016M600043, China Postdoctoral Science Foundation; Funding text: This work was supported by the Yong Elite Scientists Sponsorship Program By CAST( 2017QNRC001 ) and the Chinese Postdoctoral Science Foundation ( 2016M600043 ).

Available from: 2018-02-12 Created: 2018-02-12 Last updated: 2018-08-08Bibliographically approved

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CiteExportLink to record
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