Abstract
Mills having recovery boilers with excess capacity can potentially mix other biofuels into the black liquor to produce more electricity from biomass. This work is a laboratory study of the effect on combustion of mixing other biofuels with black liquor. The four fuels mixed with softwood black liquor were bark, wood chips, peat, and bio-sludge (which some mills already burn with black liquor). Droplets of the mixed fuels were burned at 1100 degrees C and 3% O-2 in a single particle reactor. Video and on-line gas analyzers for CO, CO2 and NO were used to measure swelling, combustion times, carbon evolution (CO+CO2), and NO formation tendency. We found changes in swelling, char burning, and NO formation, but the results indicate that mixing biofuels with black liquor may be a reasonable method of producing additional electricity.
Original language | Undefined/Unknown |
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Pages (from-to) | 30–34 |
Number of pages | 6 |
Journal | Tappi Journal |
Volume | 9 |
Issue number | 9 |
Publication status | Published - 2010 |
MoE publication type | A1 Journal article-refereed |
Keywords
- black liquor
- Biofuels