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Experimental Studies on Particle Emissions from Grate Fired Biomass Combustion Boilers

Wierzbicka, Aneta LU ; Pagels, Joakim LU ; Strand, Michael; Gudmundsson, Anders LU ; Lillieblad, Lena; Rissler, Jenny LU ; Swietlicki, Erik LU ; Bohgard, Mats LU and Sanati, Mehri LU (2002) 12th European Biomass Conference, Biomass for Energy, Industry and Climate Protection p.1054-1056
Abstract
Fine particle emissions were measured at two commercial grate fired boilers operating on moist fuel residues. The aim of this study was to characterize fine particle emissions with a view to pinpoint parameters influencing the emissions. Additionally effectiveness of used flue gas cleaning techniques was assessed. The results show that large quantities of fine particles are emitted to the atmosphere from both boilers. From 1 MW boiler equipped only in multicyclone 4.8*107 of particles/cm3 (particles with diameter smaller than 0.6 μm) are emitted to the atmosphere. From 6 MW boiler equipped in multicyclone, ESP and flue gas condenser 1.7*106 of particles/cm3 (< 0.6 μm) end up in the atmosphere. Significant fluctuations in the coarse mode... (More)
Fine particle emissions were measured at two commercial grate fired boilers operating on moist fuel residues. The aim of this study was to characterize fine particle emissions with a view to pinpoint parameters influencing the emissions. Additionally effectiveness of used flue gas cleaning techniques was assessed. The results show that large quantities of fine particles are emitted to the atmosphere from both boilers. From 1 MW boiler equipped only in multicyclone 4.8*107 of particles/cm3 (particles with diameter smaller than 0.6 μm) are emitted to the atmosphere. From 6 MW boiler equipped in multicyclone, ESP and flue gas condenser 1.7*106 of particles/cm3 (< 0.6 μm) end up in the atmosphere. Significant fluctuations in the coarse mode (1-10 μm) number concentration over time were observed in 1 MW boiler (between 100 and 10000 particles/cm3) and these were much higher than in 6 MW boiler (between 6000 and 11000 particles/cm3). Operating load showed to have a significant influence on coarse particles number concentration. Collection efficiency of ESP was assessed for about 96% by number and 83% by mass. Number concentration of particles passing through the flue gas condenser was close to unaltered, while mass concentration was reduced by half. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
particle emissions, biomass combustion
pages
1054 - 1056
conference name
12th European Biomass Conference, Biomass for Energy, Industry and Climate Protection
language
English
LU publication?
yes
id
52e4f064-c7bd-4492-a9e9-46109a3e96f1 (old id 779662)
date added to LUP
2008-04-23 13:21:55
date last changed
2016-04-16 11:20:25
@misc{52e4f064-c7bd-4492-a9e9-46109a3e96f1,
  abstract     = {Fine particle emissions were measured at two commercial grate fired boilers operating on moist fuel residues. The aim of this study was to characterize fine particle emissions with a view to pinpoint parameters influencing the emissions. Additionally effectiveness of used flue gas cleaning techniques was assessed. The results show that large quantities of fine particles are emitted to the atmosphere from both boilers. From 1 MW boiler equipped only in multicyclone 4.8*107 of particles/cm3 (particles with diameter smaller than 0.6 μm) are emitted to the atmosphere. From 6 MW boiler equipped in multicyclone, ESP and flue gas condenser 1.7*106 of particles/cm3 (&lt; 0.6 μm) end up in the atmosphere. Significant fluctuations in the coarse mode (1-10 μm) number concentration over time were observed in 1 MW boiler (between 100 and 10000 particles/cm3) and these were much higher than in 6 MW boiler (between 6000 and 11000 particles/cm3). Operating load showed to have a significant influence on coarse particles number concentration. Collection efficiency of ESP was assessed for about 96% by number and 83% by mass. Number concentration of particles passing through the flue gas condenser was close to unaltered, while mass concentration was reduced by half.},
  author       = {Wierzbicka, Aneta and Pagels, Joakim and Strand, Michael and Gudmundsson, Anders and Lillieblad, Lena and Rissler, Jenny and Swietlicki, Erik and Bohgard, Mats and Sanati, Mehri},
  keyword      = {particle emissions,biomass combustion},
  language     = {eng},
  pages        = {1054--1056},
  title        = {Experimental Studies on Particle Emissions from Grate Fired Biomass Combustion Boilers},
  year         = {2002},
}