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Partial oxidation of filter cake particles from biomass gasification process in the simulated product gas environment
Chinese Academy of Sciences (CAS), China.
Chinese Academy of Sciences (CAS), China.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Bioenergy)
Chinese Academy of Sciences (CAS), China.
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2018 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 32, no 2, p. 1703-1710Article in journal (Refereed) Published
Abstract [en]

Filtration failure occurs when filter media is blocked by accumulated solid particles. Suitable operating conditions were investigated for cake cleaning by partial oxidation of filter-cake particles (FCP) during biomass gasification. The mechanism of the FCP partial oxidation was investigated in a ceramic filter and by using thermo-gravimetric analysis through a temperature-programmed route in a 2 vol.% O2–N2 environment. Partial oxidation of the FCP in the simulated product gas environment was examined at 300–600°C in a ceramic filter that was set and heated in a laboratory-scale fixed reactor. Four reaction stages, namely drying, pre-oxidation, complex oxidation and non-oxidation, occurred in the FCP partial oxidation when the temperature increased from 30°C to 800°C in a 2 vol.% O2–N2 environment. Partial oxidation was more effective for FCP mass loss from 275 to 725°C. Experimental results obtained in a ceramic filter indicated that the best operating temperature and FCP loading occurred at 400°C and 1.59 g/cm2, respectively. The FCP were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy and Brunaeur–Emmett–Teller before and after partial oxidation. Fourier-transform infrared spectroscopy analysis revealed that partial oxidation of the FCP can result in a significant decrease in C–Hn (alkyl and aromatic) groups and an increase in C=O (carboxylic acids) groups. The scanning electron microscopy and Brunaeur–Emmett–Teller analysis suggests that during partial oxidation, the FCP underwent pore or pit formation, expansion, amalgamation and destruction.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2018. Vol. 32, no 2, p. 1703-1710
Keywords [en]
Biomass gasification; Hot gas filtration; Partial oxidation; Filter cake particles
National Category
Chemical Process Engineering Bioenergy
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-69601DOI: 10.1021/acs.energyfuels.7b01100ISI: 000426015000073OAI: oai:DiVA.org:lnu-69601DiVA, id: diva2:1171414
Available from: 2018-01-07 Created: 2018-01-07 Last updated: 2018-03-16Bibliographically approved

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Lin, Leteng

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