Related Experiment Videos
Specific energy requirement for compacting corn stover
Sudhagar Mani1, Lope G Tabil, Shahab Sokhansanj
1Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
Bioresource Technology
|September 6, 2005
Summary
Compacting corn stover into briquettes at higher pressures and lower moisture content (5-10%) significantly increases density, stability, and durability. This improves feedstock handling for biomass conversion, reducing costs.
Area of Science:
- Agricultural Engineering
- Biomass Energy
- Materials Science
Background:
- Corn stover is a key agricultural residue for biofuel and chemical production.
- Low bulk density and handling difficulties of corn stover increase feedstock delivery costs.
- Efficient biomass conversion requires optimized feedstock preparation.
Purpose of the Study:
- To investigate the effects of compaction pressure and moisture content on corn stover briquette properties.
- To determine the energy requirements for briquette production.
- To identify optimal conditions for producing dense, stable, and durable corn stover briquettes.
Main Methods:
- Chopped corn stover was compacted using a piston cylinder under pressures of 5, 10, and 15 MPa.
- Samples were tested at three moisture content levels: 5%, 10%, and 15% (wet basis).
- Briquette density, durability, stability, and energy consumption were measured.
Main Results:
- Briquette density increased with compaction pressure, ranging from 650 to 950 kg/m³.
- Lower moisture content (5-10%) yielded denser, more stable, and durable briquettes compared to 15% moisture.
- Total energy requirement for compression and extrusion ranged from 12 to 30 MJ/t.
Conclusions:
- Compaction pressure and moisture content are critical factors in corn stover briquette quality.
- Optimal briquetting conditions involve high pressure and low moisture content (5-10%).
- Improved briquette characteristics can reduce feedstock handling costs for biomass conversion.