Investigation of Process Variables in the Densification of Corn Stover Briquettes
The bulk density of raw corn stover is a major limitation to its large-scale viability as a biomass feedstock. Raw corn stover has a bulk density of 50 kg/m<sup>3</sup>, which creates significant transportation costs and limits the optimization of transport logistics. Producing a densified corn stover product during harvest would reduce harvest and transportation costs, resulting in viable pathways for the use of corn stover as a biomass feedstock. This research investigated the effect of different process variables (compression pressure, moisture content, particle size, and material composition) on a densification method that produces briquettes from raw corn stover. A customized bench-scale densification system was designed to evaluate different corn stover inputs. Quality briquette production was possible using non-reduced particle sizes and low compression pressures achievable in a continuous in-field production system. At optimized bench settings, corn stover was densified to a dry bulk density of 190 kg/m<sup>3</sup>. Corn stover with a moisture content above 25%<sub>wb</sub> was not suitable for this method of bulk densification, and greater cob content had a positive effect on product quality.
Year of publication: |
2014
|
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Authors: | Thoreson, Curtis P. ; Webster, Keith E. ; Darr, Matthew J. ; Kapler, Emily J. |
Published in: |
Energies. - MDPI, Open Access Journal, ISSN 1996-1073. - Vol. 7.2014, 6, p. 4019-4032
|
Publisher: |
MDPI, Open Access Journal |
Subject: | biomass | compression pressure | density | logistics | moisture content | pellet |
Saved in:
freely available
Extent: | application/pdf text/html |
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Type of publication: | Article |
Classification: | Q - Agricultural and Natural Resource Economics ; Q0 - Agricultural and Natural Resource Economics. General ; Q4 - Energy ; Q40 - Energy. General ; Q41 - Demand and Supply ; Q42 - Alternative Energy Sources ; Q43 - Energy and the Macroeconomy ; q47 ; Q48 - Government Policy ; Q49 - Energy. Other |
Source: |
Persistent link: https://www.econbiz.de/10011030819
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