Conference paper Open Access
Influence of pressure and CO2 in fluidized bed gasification of waste biomasses
Szul Mateusz;
Słowik Krzysztof;
Głód Krzysztof;
Iluk Tomasz
An autothermal fluidized bed reactor was used to carry out research on the influence of pressure on gasification process of different types of biomasses. The gasified feedstocks were bark, lignin and softwood pellet as a reference material. The gasification was done with a mixture of O2/CO2/H2O. The impact of the application of CO2 on yield of H2 in syngas was determined. Resulting high content of CO makes use of the syngas in chemical synthesis applications very difficult without pretreatment . On the other hand, the CO2 proved to improve Carbon Conversion Efficiency of the gasification and to be an option for its chemical sequestration (negative carbon footprint). Moreover, a slight variation of conventional indices used to evaluate efficiencies of gasification systems (Carbon Conversion Efficiency and Steam/Carbon ratio) was proposed to take into account the impact of the additional source of carbon. Increasing system pressure led to syngas changes in line with predictions of the Le Chatelier's principle. The changes were seen primarily by higher yields of CH4 and lower overall production of syngas. For higher hydrocarbons (CxHy) the trend was unclear. For each pressure level and a standard 850°C gasification temperature, a set of stable gasification parameters were achieved with the exception of lignin at 2 barg.
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- Publication date:
- November 18, 2019
- DOI:
-
- ISBN:
- 978-3-9503671-1-9
- Keyword(s):
- O2/CO2/H2O gasification biomass biogenic residues pressure ash agglomeration
- Published in:
- Proceedings of the ICPS 19, Verein zur Förderung zukunftsfähiger Energietechnik auf Basis der Poly- generationsstrategie aus Biomasse, Wien, Austria, pp. 276-286 (978-3-9503671-1-9).
- Grants:
-
European Commission:
- Heat-To-Fuel - Biorefinery combining HTL and FT to convert wet and solid organic, industrial wastes into 2nd generation biofuels with highest efficiency (764675)
- Meeting:
- International Conference on Polygeneration Strategies 2019 (ICPS 19), Wien, Austria, 18-20.11.2019 (Session Heat-to-Fuel Workshop)
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International