High-efficiency biomass gasifier SOFC systems with direct internal tar reforming

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Abstract

Removing biosyngas contaminants is crucial for the efficient and safe operation of biomass gasifier solid oxide fuel cells systems. Among the contaminants, tar might be considered an additional fuel if converted into H2 and CO in a reformer or directly in the SOFC. However, no sufficient information is available on direct internal tar reforming. The knowledge gained during the 4-years project FlexiFuel-SOFC is presented. The aim of these studies was to determine the possibility to directly reform tar in the SOFC, and to assess the influence that other biosyngas contaminants (i.e., H2S and HCl) can have on the process. Benzene can be regarded as fuel, while naphthalene as a contaminant. Also toluene can be reformed inside the SOFC, but HCl seems to affect the process. Acetic acid is completely converted inside SOFCs and its conversion appears not affected by H2S. However, it causes carbon deposition, mainly in the inlet pipelines.

Original languageEnglish
Pages (from-to)781-790
JournalECS Transactions
Volume91
Issue number1
DOIs
Publication statusPublished - 2019
EventSOFC 2019: 16th International Symposium on Solid Oxide Fuel Cells - Kyoto, Japan
Duration: 8 Sep 201913 Sep 2019

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