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Fuel improvement measures for particulate matter emission reduction during corn cob combustion
Citation Link: https://doi.org/10.15480/882.3713
Publikationstyp
Journal Article
Date Issued
2021-07-27
Sprache
English
Author(s)
TORE-DOI
Journal
Volume
14
Issue
15
Article Number
4548
Citation
Energies 14 (15): 4548 (2021)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
Fuel-related measures and modernization of small-scale combustion units has become the focus of attention in the renewable heat generation sector, as a means to promote local biomass utilization and fuel-flexibility while meeting strict environmental legislative requirements. With the aim to mitigate total particulate matter emissions and ash-associated problems characteristic of crop residue combustion, (1) corn cob pellets (with and without kaolin and binder) as well as (2) fuel blends with wood pellets were combusted in a pellet oven under full load. Results show that additivation or fuel blending (e.g., 50 wt. % wood and 50 wt. % corn cob pellets) reduce total particulate and CO-emissions by 48 to 60 wt. % and 64 to 89 wt. %, respectively, in comparison to baseline emissions from non-additivized corn cob pellets. Kaolin prevented sintering of corn cob ash. However, considerable grate ash entrainment was observed. TPM consists of a “primary network” - polyhedral and spherical particles approximately 1 μm in diameter (mainly KCl), and a “secondary network” built on top of the primary network, consisting of square-prism-shaped particles of approximately 200 nm in diameter. KCl and K₂SO₄ are main compounds in particles from corn cob and wood pellet combustion, respectively. Effective measures demonstrated within this study should be complemented with low-cost coarse ash removal systems.
Subjects
biomass
corn cob
combustion
additives
kaolin
particulate matter
DDC Class
600: Technik
620: Ingenieurwissenschaften
Funding Organisations
More Funding Information
This research was funded by Deutsche Bundesstiftung Umwelt (DBU), grant number 33897/01 und 33897/02, and Scholarship of the Hanseatic City of Hamburg. Publishing of this paper supported by Funding Programme “Open Access Publishing” of Hamburg University of
Technology (TUHH).
Technology (TUHH).
Publication version
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