Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Buchkapitel |
| Titel (primär) | Possibilities of torrefied biomass co-gasification and co-firing |
| Titel (sekundär) | DGMK-Tagungsbericht 2014-2 "Konversion von Biomassen". DGMK-Fachbereichstagung, Rotenburg a.d. Fulda, 12.-14. Mai 2014 |
| Autor | Witt, J.; Bienert, K.; Carbo, M.; Kiel, J.; Wolfesberger-Schwabl, U.; Thrän, D. |
| Erscheinungsjahr | 2014 |
| Department | BIOENERGIE |
| Seite von | 105 |
| Seite bis | 112 |
| Sprache | englisch |
| UFZ Querschnittsthemen | RU6; |
| Abstract | The European (FP7) project SECTOR, started in January 2012, aims at the further development and the reduction of the time to market of torrefaction-based technologies for the production of solid bioenergy carriers. In torrefaction, biomass is heated up in the absence of oxygen to at least 250°C. By combining torrefaction with pelleting or briquetting, biomass can be converted into high-energy-density bioenergy carriers with improved behaviour in (long-distance) transport, handling and storage. Torrefaction also creates superior properties for biomass in many major end-use applications. The process has the potential to provide a significant contribution to an enlarged raw material portfolio for sustainable biomass fuel production inside Europe by including both agricultural and forestry biomass (residues). This paper will present an overview of the origin and characterisation of torrefied biomass as well as the most important results of the first project phase. About 100 tons of torrefied biomass were produced and densified which has led to the formulation of dedicated recipes for various feedstocks. The torrefied pellets and briquettes were tested to assess the material performance during handling and storage as well as in small- and large-scale end-use applications. These results will be used to further improve the torrefied product quality in the second phase of the project. Torrefied pellets and briquettes with different degrees of torrefaction were characterised with respect to durability, weathering, biodegradation, self-heating, self-ignition and dust explosion. Larger samples of torrefied pellets have been subjected to outdoor stockpile tests, and to assess handling in existing feed lines of coal-fired power plants. Three principal enduse applications for torrefied biomass are under investigation: co-firing in pulverised fuel boilers, (co-)gasification in entrained-flow gasifiers and combustion in commercial pellet boilers. Results that were obtained during lab-, pilot- and large-scale thermal conversion trials will be presented. Among other tests results of a large scale co-gasification test in a coal power plant with an output of 253 MWel (with 1200 tons of torrefied biomass pellets, biomass share till 70 % on energy basis) could be involved. A further large scale co-firing test is in planning. In summary, during the first two years of SECTOR, project partners have been able to produce torrefied biomass of a better and more constant quality, and consistent data sets on logistics and end-use performance contribute to increasing confidence levels amongst relevant stakeholders. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15056 |
| Witt, J., Bienert, K., Carbo, M., Kiel, J., Wolfesberger-Schwabl, U., Thrän, D. (2014): Possibilities of torrefied biomass co-gasification and co-firing DGMK-Tagungsbericht 2014-2 "Konversion von Biomassen". DGMK-Fachbereichstagung, Rotenburg a.d. Fulda, 12.-14. Mai 2014 DGMK, Hamburg, p. 105 - 112 |
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