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

Nikolai DeMartini*, Esperanza Monedero, Patrik Yrjas, Mikko Hupa

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

Mills with recovery boilers with excess capacity can potentially mix other biofuels into the black liquor to produce more bio-electricity. 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 biosludge (which some mills already burn with black liquor). Droplets of the mixed fuels were burned at 1100 °C and 3% 02 in a droplet furnace. Video and on-line gas analyzers for CO, C02 and NO were used to measure swelling, combustion times, carbon evolution (C02+CO), 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 bio-electricity.

Original languageEnglish
Title of host publication2010 International Chemical Recovery Conference
Pages24-32
Number of pages9
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
Event2010 International Chemical Recovery Conference - Williamsburg, VA, United States
Duration: 29 Mar 20101 Apr 2010

Publication series

NameInternational Chemical Recovery Conference
Volume2

Conference

Conference2010 International Chemical Recovery Conference
CountryUnited States
CityWilliamsburg, VA
Period29/03/1001/04/10

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