Title:
Steam Reforming of Hydrocarbons from Sorption Enhanced Gasification of Biomass: Influence of Tar Model Compounds on Methane Conversion and Catalyst Behavior
Author(s):
Kertthong, T., Chen, Y.-H., Schmid, M., Scheffknecht, G.
Document(s):
Paper
Abstract:
To enhance the overall gas quality for further synthesis applications, methane, other light hydrocarbons, and tar in the synthesis gas from sorption enhanced gasification of biomass are desirable to be converted into H2 and CO in a downstream reformer. Such a process requires proper catalysts and sufficient energy. This work focuses on the steam reforming of methane and tar model compounds (mixture of toluene and naphthalene) over a nickel-based catalyst in the simulated SEG-derived condition. Since tar can easily deactivate nickel-based catalysts, the influence of tar on methane conversion and catalyst behavior in the long-term reforming was investigated. Various parameters were studied such as reaction temperature, amount of tar model compounds, and fraction of toluene to naphthalene. This work revealed that tar model compounds had a significant effect on CH4 conversion, especially at the lower reaction temperature. The presence of tar in the feed inhibited the conversion of CH4 and slowly deactivated the catalyst over time. Interestingly, it was found that CH4 conversion could be maintained constant with time on stream up to four hours and almost complete conversion of both tar model compounds was observed in the first hour of reaction even at low temperature (600 °C).
Keywords:
gasification, methane, tar, reforming, catalyst
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Gasification for Synthesis Gas Production
Event:
29th European Biomass Conference and Exhibition
Session:
2AV.4.3
Pages:
522 - 525
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-2AV.4.3
Price:
FREE
