Müller, F., Rodriguez Molano, L. C., Schöfbänker, E. R., & Winter, F. (2024). Surface adjustment of biochar by CO2 gasification under fixed and fluidized bed conditions. In G. Yue, H. Yang, T. Zhou, & S. Ma (Eds.), Proceedings of the 14th International Conference on Fluidized Bed Technology (pp. 318–325). https://doi.org/10.34726/9639
Proceedings of the 14th International Conference on Fluidized Bed Technology
-
Date (published):
2024
-
Event name:
14th International Conference on Fluidized Bed Technology
en
Event date:
21-Jul-2024 - 24-Jul-2024
-
Event place:
Taiyuan, China
-
Number of Pages:
8
-
Peer reviewed:
Yes
-
Keywords:
Gasification
en
CO2; Biomass
de
Abstract:
This paper explores how torrefaction and CO2 gasification can be combined to create biochar with a high surface area from Pinus sylvestris wood pellets. Raw pellets were pretreated in a torrefaction process at 300 °C before conducting biomass CO2 gasification experiments under various operating conditions. Gasification was performed under fixed and fluidized bed conditions at temperatures between 800 to 900 °C and biomass residence times of 15 or 25 minutes. Biomass burn-off and BET surface areas were analyzed individually and combined to determine the surface yield per raw Pinus sylvestris feedstock. Higher temperatures, higher biomass residence times, and fixed bed conditions increased burn-off and BET surface areas up to 798 m²/g. Surface yield per raw biomass was instead found to be the highest from fluidized bed experiments, which yielded around 100 m²/gfeedstock after gasification at 850 to 900 °C.
en
Project title:
Verkapselung von Metallen in Kohlenstoff-Partikeln: I 5404-N (FWF - Österr. Wissenschaftsfonds)
-
Research Areas:
Sustainable Production and Technologies: 50% Efficient Utilisation of Material Resources: 25% Climate Neutral, Renewable and Conventional Energy Supply Systems: 25%
CC BY 4.0
