Fuel Gas Production from the Co-Gasification of Coal, Plastic Waste, and Wood in a Fluidized Bed Reactor: Effect of Gasifying Agent and Bed Material

Lucio Zaccariello () and Maria Laura Mastellone
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Lucio Zaccariello: Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania, Via Antonio Vivaldi 43, 81100 Caserta, Italy
Maria Laura Mastellone: Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania, Via Antonio Vivaldi 43, 81100 Caserta, Italy

Sustainability, 2023, vol. 15, issue 9, 1-19

Abstract: In this study, the effect of gasifying agent and bed material on the performance of the co-gasification of a mixture of coal, plastic waste, and wood was investigated. The experimental runs were carried out in a lab-scale bubbling fluidized bed reactor utilizing air, oxygen-enriched air, a mixture of air and steam, and a mixture of oxygen and carbon dioxide as reactant gases, while silica sand, olivine, and a mixture of olivine and dolomite as bed materials were used. The results indicated that both gasifying agent and bed material strongly affect the gas composition and, as a consequence, the process performance. In particular, the test with oxygen-enriched air and silica sand provided a producer gas with the highest heating value (9.32 MJ/Nm 3 ), while the best performance in terms of gas yield (2.98 Nm 3 /kg) and tar reduction (−94.5%) was obtained by utilizing the air/steam mixture and olivine. As regards tar composition, it was observed that the most abundant and recalcitrant tar substance groups are naphthalenes and PAHs. On the other hand, phenols and furans appear to be the most sensitive groups to the effect of gasifying agent and bed material.

Keywords: co-gasification; fuel gas; gasifying agent; bed material; tar composition (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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