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Repressing NOx and N2O emissions in a fluidized bed biomass combustor

Olofsson, Göran LU ; Wang, Wuyin LU ; Ye, Zhicheng; Bjerle, Ingemar LU and Andersson, Arne LU (2002) In Energy & Fuels 16(4). p.915-919
Abstract
The emission of NOx and-N2O were studied experimentally in a fluidized bed biomass combustor. To investigate effectively the influence of different parameters on the NOx formation with a limited number of experiments, an orthogonal experimental design was adapted. Four biomass fuels, three NOx-repressing additives, four bed materials, and four alkali-capturing additives were tested in a temperature range of 670-900 degreesC and at two pressure levels, 1.0 and 1.5 MPa. The NO,,repressing additive was added to repress the formation of NOx and N2O and the alkali-capturing additive was added to prevent the bed from agglomeration. In the present study it was found that it was not possible to minimize both NO (NOx) and N2O with the same... (More)
The emission of NOx and-N2O were studied experimentally in a fluidized bed biomass combustor. To investigate effectively the influence of different parameters on the NOx formation with a limited number of experiments, an orthogonal experimental design was adapted. Four biomass fuels, three NOx-repressing additives, four bed materials, and four alkali-capturing additives were tested in a temperature range of 670-900 degreesC and at two pressure levels, 1.0 and 1.5 MPa. The NO,,repressing additive was added to repress the formation of NOx and N2O and the alkali-capturing additive was added to prevent the bed from agglomeration. In the present study it was found that it was not possible to minimize both NO (NOx) and N2O with the same combination of parameters. Instead, either NO formation or N2O formation has to be minimized. The results also showed that the NOx-repressing additives were active in repressing NOx and N2O, except for NH4HCO3. The optimal combination of the parameters investigated in the present study for minimizing the emissions were: sawdust, bone ash, mullite, and urea for NO minimizations, and straw, bone ash, clay, and Na2CO3 for N2O minimizations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Energy & Fuels
volume
16
issue
4
pages
915 - 919
publisher
The American Chemical Society
external identifiers
  • wos:000176965100015
  • scopus:0036629326
ISSN
0887-0624
DOI
10.1021/ef0102768
language
English
LU publication?
yes
id
d44b6d66-28dd-455f-be4d-4c770cb80ff6 (old id 332775)
date added to LUP
2007-11-02 13:58:02
date last changed
2017-11-05 04:31:20
@article{d44b6d66-28dd-455f-be4d-4c770cb80ff6,
  abstract     = {The emission of NOx and-N2O were studied experimentally in a fluidized bed biomass combustor. To investigate effectively the influence of different parameters on the NOx formation with a limited number of experiments, an orthogonal experimental design was adapted. Four biomass fuels, three NOx-repressing additives, four bed materials, and four alkali-capturing additives were tested in a temperature range of 670-900 degreesC and at two pressure levels, 1.0 and 1.5 MPa. The NO,,repressing additive was added to repress the formation of NOx and N2O and the alkali-capturing additive was added to prevent the bed from agglomeration. In the present study it was found that it was not possible to minimize both NO (NOx) and N2O with the same combination of parameters. Instead, either NO formation or N2O formation has to be minimized. The results also showed that the NOx-repressing additives were active in repressing NOx and N2O, except for NH4HCO3. The optimal combination of the parameters investigated in the present study for minimizing the emissions were: sawdust, bone ash, mullite, and urea for NO minimizations, and straw, bone ash, clay, and Na2CO3 for N2O minimizations.},
  author       = {Olofsson, Göran and Wang, Wuyin and Ye, Zhicheng and Bjerle, Ingemar and Andersson, Arne},
  issn         = {0887-0624},
  language     = {eng},
  number       = {4},
  pages        = {915--919},
  publisher    = {The American Chemical Society},
  series       = {Energy & Fuels},
  title        = {Repressing NOx and N2O emissions in a fluidized bed biomass combustor},
  url          = {http://dx.doi.org/10.1021/ef0102768},
  volume       = {16},
  year         = {2002},
}