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  4. Inorganic PM and K emissions during ashing of solid biofuels and Kaolinite – Data measurement in laboratory scale
 
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Inorganic PM and K emissions during ashing of solid biofuels and Kaolinite – Data measurement in laboratory scale

Publikationstyp
Journal Article
Date Issued
2021-07-15
Sprache
English
Author(s)
Höfer, Isabel  
Gollmer, Christian  orcid-logo
Kaltschmitt, Martin  
Institut
Umwelttechnik und Energiewirtschaft V-9  
TORE-URI
http://hdl.handle.net/11420/10004
Journal
Fuel  
Volume
296
Article Number
120704
Citation
Fuel 296: 120704 (2021-07-15)
Publisher DOI
10.1016/j.fuel.2021.120704
Scopus ID
2-s2.0-85110434713
During combustion of solid biofuels, a broad variety of particulate matter (PM) is released into the atmosphere. Combustion systems are constantly being further improved according to the 3‑T rule (time, temperature and turbulence), thus further reducing the proportion of organic compounds in the PM. The inorganic share in PM is affected by this optimization in a rather small amount and therefore gains relevance. Woody and herbaceous biofuels are characterized by a varying elemental composition responsible for a different ash chemistry and thus for various amounts of emitted particles. To estimate the potential PM emissions as well as the corresponding K content related to the respective elements in the solid biofuels during combustion a new inorganic PM sampling method in the laboratory scale has been developed and tested. This method can forecast the amount of released inorganic PM and K during ashing of different biomasses. Here the inorganic PM of five different biomasses (i.e., spruce wood, wheat straw, spruce bark, corn cob and miscanthus) is measured. In addition, the influence of the additive Kaolinite (1 mas-%) is tested regarding the inorganic PM and K emissions during ashing of the biomasses spruce wood and miscanthus. Based on the obtained results from the ash analyses, conclusions concerning the applicability of the presented inorganic PM sampling method are derived. It can be shown, that the addition of 1 mas-% Kaolinite reduces the amount of K in the inorganic PM in the spruce wood and miscanthus sample by 55% and by 78%, respectively.
Subjects
Elemental analysis
Kaolinite
Laboratory scale
Particulate matter
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