Boiler operation influence on the emissions of submicrometer-sized particles and polycyclic aromatic hydrocarbons from biomass-fired grate boilers
Lillieblad, Lena ; Szpila, Aneta ; Strand, Michael ; Pagels, Joakim LU ; Rupar-Gadd, Katarina ; Gudmundsson, Anders LU ; Swietlicki, Erik LU
; Bohgard, Mats
LU
and Sanati, Mehri
LU
(2004)
In Energy & Fuels
18(2).
p.410-417
- Abstract
- The emissions of particles, and gaseous compounds, into the ambient air from biomass-fired moving grate boilers were characterized under different boiler operation conditions. The boilers had a thermal capacity of similar to1 MW. The flue gas cleaning systems consisted of multicyclones for the removal of coarse particles. Dry wood fuel that consisted of shavings, wood chips, and sawdust from a local wood industry and wood pellets were fired at two plants. The influence of boiler load on the emissions was characterized. An electrical low-pressure impactor (ELPI) was used to determine the particle number concentration with high time resolution. A low-pressure cascade impactor (LPI) was utilized for the mass size distribution and the... (More)
- The emissions of particles, and gaseous compounds, into the ambient air from biomass-fired moving grate boilers were characterized under different boiler operation conditions. The boilers had a thermal capacity of similar to1 MW. The flue gas cleaning systems consisted of multicyclones for the removal of coarse particles. Dry wood fuel that consisted of shavings, wood chips, and sawdust from a local wood industry and wood pellets were fired at two plants. The influence of boiler load on the emissions was characterized. An electrical low-pressure impactor (ELPI) was used to determine the particle number concentration with high time resolution. A low-pressure cascade impactor (LPI) was utilized for the mass size distribution and the size-differentiated chemical composition. Elemental analysis of the fly ash collected on impactor substrates was made by particle-induced X-ray emission (PIXE) analysis. The concentration of elemental carbon under different load conditions was also measured. In addition, emissions of polycyclic aromatic hydrocarbons (PAHs) from the boiler that was operating on dry wood fuel were compared with PAH emissions from two different biomass-fired boilers (one was operating on forest residues and the other on pellets). The boiler load had little influence on the particle mass concentration of submicrometer-sized particles, which was in the range of 50-75 mg/m(3) (0 degreesC, 101.3 kPa, dry gas, 13% CO2). The total particle number concentration increased and the particle size decreased as the boiler load increased. The elemental analysis revealed that potassium and sulfur were the dominating components in the submicrometer size range, whereas potassium and calcium were major components in the coarse fraction. The PAH emissions between the three boilers varied by almost 3 orders of magnitude. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/284690
- author
- Lillieblad, Lena
; Szpila, Aneta
; Strand, Michael
; Pagels, Joakim
LU
; Rupar-Gadd, Katarina
; Gudmundsson, Anders
LU
; Swietlicki, Erik
LU
; Bohgard, Mats
LU
and Sanati, Mehri
LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- biomass combustion, aerosol
- in
- Energy & Fuels
- volume
- 18
- issue
- 2
- pages
- 410 - 417
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000220287400019
- scopus:1842458265
- ISSN
- 0887-0624
- DOI
- 10.1021/ef0300444
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Ergonomics and Aerosol Technology (011025002), Nuclear Physics (Faculty of Technology) (011013007)
- id
- b35c328d-2073-49ef-aeab-a405967b33ab (old id 284690)
- date added to LUP
- 2016-04-01 15:52:46
- date last changed
- 2022-03-30 03:41:15
@article{b35c328d-2073-49ef-aeab-a405967b33ab,
abstract = {{The emissions of particles, and gaseous compounds, into the ambient air from biomass-fired moving grate boilers were characterized under different boiler operation conditions. The boilers had a thermal capacity of similar to1 MW. The flue gas cleaning systems consisted of multicyclones for the removal of coarse particles. Dry wood fuel that consisted of shavings, wood chips, and sawdust from a local wood industry and wood pellets were fired at two plants. The influence of boiler load on the emissions was characterized. An electrical low-pressure impactor (ELPI) was used to determine the particle number concentration with high time resolution. A low-pressure cascade impactor (LPI) was utilized for the mass size distribution and the size-differentiated chemical composition. Elemental analysis of the fly ash collected on impactor substrates was made by particle-induced X-ray emission (PIXE) analysis. The concentration of elemental carbon under different load conditions was also measured. In addition, emissions of polycyclic aromatic hydrocarbons (PAHs) from the boiler that was operating on dry wood fuel were compared with PAH emissions from two different biomass-fired boilers (one was operating on forest residues and the other on pellets). The boiler load had little influence on the particle mass concentration of submicrometer-sized particles, which was in the range of 50-75 mg/m(3) (0 degreesC, 101.3 kPa, dry gas, 13% CO2). The total particle number concentration increased and the particle size decreased as the boiler load increased. The elemental analysis revealed that potassium and sulfur were the dominating components in the submicrometer size range, whereas potassium and calcium were major components in the coarse fraction. The PAH emissions between the three boilers varied by almost 3 orders of magnitude.}},
author = {{Lillieblad, Lena and Szpila, Aneta and Strand, Michael and Pagels, Joakim and Rupar-Gadd, Katarina and Gudmundsson, Anders and Swietlicki, Erik and Bohgard, Mats and Sanati, Mehri}},
issn = {{0887-0624}},
keywords = {{biomass combustion; aerosol}},
language = {{eng}},
number = {{2}},
pages = {{410--417}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Energy & Fuels}},
title = {{Boiler operation influence on the emissions of submicrometer-sized particles and polycyclic aromatic hydrocarbons from biomass-fired grate boilers}},
url = {{http://dx.doi.org/10.1021/ef0300444}},
doi = {{10.1021/ef0300444}},
volume = {{18}},
year = {{2004}},
}