Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor

A. Hukkanen (Corresponding Author), T. Kaivosoja, O. Sippula, K. Nuutinen, Jorma Jokiniemi, J. Tissari

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Abstract

In this study, a catalytic combustor was used on a wood stove as a secondary emission reduction measure. An experimental comparison of emissions was done from combustion experiments with and without the catalyst. Samples were collected from gasification and burn out phases and from the whole combustion cycle (from start-up to burn out). Concentrations of carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2) and organic gaseous carbon (OGC), temperature and pressure were measured online directly from the flue gas stack. With the catalyst, the O2 concentration in the flue gas was lower and the temperature higher than without the catalyst, due to the large amount of unburnt compounds which were oxidized by the catalyst. Reductions of 21% for CO and 14% for OGC were achieved during the whole combustion cycle. During the burn out phase, a reduction as high as 80% was achieved for CO. PM1 (particle mass below aerodynamic size of 1 μm) was reduced by 30% during the whole combustion cycle. During gasification, a 44% reduction of PM1 was achieved but there was no reduction during burn out. The organic and elemental carbon analyzed from PM1 had reduced also only during gasification by 56% and 37%, respectively. The particle emission reductions were notable and it can be concluded that the catalyst affects the particles through oxidation of condensable organic vapors and oxidation of soot particles. The catalyst has potential as a secondary emission reduction method but in order to achieve low emissions, also improved combustion technology for emission reduction needs to be developed.
Original languageEnglish
Pages (from-to)16-23
JournalAtmospheric Environment
Volume50
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

combustion
catalyst
carbon monoxide
carbon
oxidation
soot
aerodynamics
carbon isotope
carbon dioxide
oxygen
emission reduction
particle
gasification
experiment
temperature
flue gas

Keywords

  • Carbon monoxide
  • catalyst
  • fine particles
  • organic gaseous compounds
  • wood combustion

Cite this

Hukkanen, A. ; Kaivosoja, T. ; Sippula, O. ; Nuutinen, K. ; Jokiniemi, Jorma ; Tissari, J. / Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor. In: Atmospheric Environment. 2012 ; Vol. 50. pp. 16-23.
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abstract = "In this study, a catalytic combustor was used on a wood stove as a secondary emission reduction measure. An experimental comparison of emissions was done from combustion experiments with and without the catalyst. Samples were collected from gasification and burn out phases and from the whole combustion cycle (from start-up to burn out). Concentrations of carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2) and organic gaseous carbon (OGC), temperature and pressure were measured online directly from the flue gas stack. With the catalyst, the O2 concentration in the flue gas was lower and the temperature higher than without the catalyst, due to the large amount of unburnt compounds which were oxidized by the catalyst. Reductions of 21{\%} for CO and 14{\%} for OGC were achieved during the whole combustion cycle. During the burn out phase, a reduction as high as 80{\%} was achieved for CO. PM1 (particle mass below aerodynamic size of 1 μm) was reduced by 30{\%} during the whole combustion cycle. During gasification, a 44{\%} reduction of PM1 was achieved but there was no reduction during burn out. The organic and elemental carbon analyzed from PM1 had reduced also only during gasification by 56{\%} and 37{\%}, respectively. The particle emission reductions were notable and it can be concluded that the catalyst affects the particles through oxidation of condensable organic vapors and oxidation of soot particles. The catalyst has potential as a secondary emission reduction method but in order to achieve low emissions, also improved combustion technology for emission reduction needs to be developed.",
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Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor. / Hukkanen, A. (Corresponding Author); Kaivosoja, T.; Sippula, O.; Nuutinen, K.; Jokiniemi, Jorma; Tissari, J.

In: Atmospheric Environment, Vol. 50, 2012, p. 16-23.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor

AU - Hukkanen, A.

AU - Kaivosoja, T.

AU - Sippula, O.

AU - Nuutinen, K.

AU - Jokiniemi, Jorma

AU - Tissari, J.

PY - 2012

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N2 - In this study, a catalytic combustor was used on a wood stove as a secondary emission reduction measure. An experimental comparison of emissions was done from combustion experiments with and without the catalyst. Samples were collected from gasification and burn out phases and from the whole combustion cycle (from start-up to burn out). Concentrations of carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2) and organic gaseous carbon (OGC), temperature and pressure were measured online directly from the flue gas stack. With the catalyst, the O2 concentration in the flue gas was lower and the temperature higher than without the catalyst, due to the large amount of unburnt compounds which were oxidized by the catalyst. Reductions of 21% for CO and 14% for OGC were achieved during the whole combustion cycle. During the burn out phase, a reduction as high as 80% was achieved for CO. PM1 (particle mass below aerodynamic size of 1 μm) was reduced by 30% during the whole combustion cycle. During gasification, a 44% reduction of PM1 was achieved but there was no reduction during burn out. The organic and elemental carbon analyzed from PM1 had reduced also only during gasification by 56% and 37%, respectively. The particle emission reductions were notable and it can be concluded that the catalyst affects the particles through oxidation of condensable organic vapors and oxidation of soot particles. The catalyst has potential as a secondary emission reduction method but in order to achieve low emissions, also improved combustion technology for emission reduction needs to be developed.

AB - In this study, a catalytic combustor was used on a wood stove as a secondary emission reduction measure. An experimental comparison of emissions was done from combustion experiments with and without the catalyst. Samples were collected from gasification and burn out phases and from the whole combustion cycle (from start-up to burn out). Concentrations of carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2) and organic gaseous carbon (OGC), temperature and pressure were measured online directly from the flue gas stack. With the catalyst, the O2 concentration in the flue gas was lower and the temperature higher than without the catalyst, due to the large amount of unburnt compounds which were oxidized by the catalyst. Reductions of 21% for CO and 14% for OGC were achieved during the whole combustion cycle. During the burn out phase, a reduction as high as 80% was achieved for CO. PM1 (particle mass below aerodynamic size of 1 μm) was reduced by 30% during the whole combustion cycle. During gasification, a 44% reduction of PM1 was achieved but there was no reduction during burn out. The organic and elemental carbon analyzed from PM1 had reduced also only during gasification by 56% and 37%, respectively. The particle emission reductions were notable and it can be concluded that the catalyst affects the particles through oxidation of condensable organic vapors and oxidation of soot particles. The catalyst has potential as a secondary emission reduction method but in order to achieve low emissions, also improved combustion technology for emission reduction needs to be developed.

KW - Carbon monoxide

KW - catalyst

KW - fine particles

KW - organic gaseous compounds

KW - wood combustion

U2 - 10.1016/j.atmosenv.2012.01.016

DO - 10.1016/j.atmosenv.2012.01.016

M3 - Article

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JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

ER -