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http://dx.doi.org/10.18419/opus-12639
Autor(en): | Hafner, Selina Schmid, Max Scheffknecht, Günter |
Titel: | Parametric study on the adjustability of the syngas composition by sorption-enhanced gasification in a dual-fluidized bed pilot plant |
Erscheinungsdatum: | 2021 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 17 |
Erschienen in: | Energies 14 (2021), No. 399 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-126585 http://elib.uni-stuttgart.de/handle/11682/12658 http://dx.doi.org/10.18419/opus-12639 |
ISSN: | 1996-1073 |
Zusammenfassung: | Finding a way for mitigating climate change is one of the main challenges of our generation. Sorption-enhanced gasification (SEG) is a process by which syngas as an important intermediate for the synthesis of e.g., dimethyl ether (DME), bio-synthetic natural gas (SNG) and Fischer-Tropsch (FT) products or hydrogen can be produced by using biomass as feedstock. It can, therefore, contribute to a replacement for fossil fuels to reduce greenhouse gas (GHG) emissions. SEG is an indirect gasification process that is operated in a dual-fluidized bed (DFB) reactor. By the use of a CO2-active sorbent as bed material, CO2 that is produced during gasification is directly captured. The resulting enhancement of the water-gas shift reaction enables the production of a syngas with high hydrogen content and adjustable H2/CO/CO2-ratio. Tests were conducted in a 200 kW DFB pilot-scale facility under industrially relevant conditions to analyze the influence of gasification temperature, steam to carbon (S/C) ratio and weight hourly space velocity (WHSV) on the syngas production, using wood pellets as feedstock and limestone as bed material. Results revealed a strong dependency of the syngas composition on the gasification temperature in terms of permanent gases, light hydrocarbons and tars. Also, S/C ratio and WHSV are parameters that can contribute to adjusting the syngas properties in such a way that it is optimized for a specific downstream synthesis process. |
Enthalten in den Sammlungen: | 04 Fakultät Energie-, Verfahrens- und Biotechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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energies-14-00399-v2.pdf | 3,32 MB | Adobe PDF | Öffnen/Anzeigen |
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