Co-firing black liquor and biomass in a laboratory single droplet reactor - effects on emissions and combustion characteristics

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Nikolai Demartini, Esperanza Monedero, Patrik Yrjas, Mikko Hupa
Publication year: 2010
Journal: Tappi Journal
Journal acronym: TAPPI J
Volume number: 9
Issue number: 9
Start page: 30
End page: 34
Number of pages: 6
ISSN: 0734-1415


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.


Biofuels, black liquor

Last updated on 2020-28-02 at 05:42

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