The Impact of Aluminosilicate Additives upon the Chlorine Distribution and Melting Behavior of Poultry Litter Ash

The use of poultry litter (PL) as a sustainable fuel is gaining more attention due to its wide availability and carbon neutrality. However, this type of feedstock is rich in ash and typically contains a high concentration of chlorine (Cl) and alkali elements (Na, K). Therefore, it is likely to cause...

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Published in:Energies (Basel) 2024-04, Vol.17 (8), p.1854
Main Authors: Maj, Izabella, Niesporek, Kamil, Matus, Krzysztof, Miccio, Francesco, Mazzocchi, Mauro, Łój, Paweł
Format: Article
Language:English
Subjects:
Agriculture
Alternative energy sources
ash
Bentonite
biomass
Biomass energy
Boilers
Chlorine
chlorine corrosion
Clay
Coal
Combustion
Corrosion
Corrosion and anti-corrosives
Efficiency
Emission standards
Emissions
Energy resources
Industrial plant emissions
Investigations
kaolin
Oxidation
Pollutants
Poultry
Poultry industry
poultry litter
Renewable resources
Sulfur content
Temperature
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Summary:The use of poultry litter (PL) as a sustainable fuel is gaining more attention due to its wide availability and carbon neutrality. However, this type of feedstock is rich in ash and typically contains a high concentration of chlorine (Cl) and alkali elements (Na, K). Therefore, it is likely to cause unwanted issues during combustion and co-combustion, such as chlorine-induced corrosion, ash deposition, and bed agglomeration. In this study, for the first time, the influence of aluminosilicate additives on the above problems of poultry litter was investigated. Three aluminosilicate minerals are under consideration: kaolin, halloysite, and bentonite. Their influence on the chemical composition and meting tendencies of two poultry litter ashes are determined. The investigated ashes, PL1 and PL2, are characterized by different chlorine contents of 6.38% and 0.42%, respectively. The results show that in the case of the chlorine-rich PL1 ash, the additives reduced the chlorine content by up to 45%, resulting in a 3.93% of chlorine in the case of halloysite, 3.48% in the case of kaolin, and 4.25% in the case of bentonite. The additives also positively influenced the shrinkage starting temperature and the deformation temperature of the PL1 ash.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17081854