Scale-up study on combustibility and emission formation with two biomass fuels (B quality wood and pepper plant residue) under BFB conditions

A. A. Khan (Corresponding Author), Martti Aho, W. de Jong, Pasi Vainikka, P. J. Jansens, H. Spliethoff

Research output: Contribution to journalArticleScientificpeer-review

37 Citations (Scopus)

Abstract

Combustion of two biomass fuels: demolition wood (DW) and pepper plant residue (PPR), was investigated from an emission viewpoint in a 20 kWth fluidized bubbling bed reactor and a 1 MWth fluidized bubbling bed test boiler. Fluidization velocity and boiler output were varied in the larger facility whereas they were kept constant in the smaller reactor. Traditional flue gases were analyzed. In addition, impactor measurements were carried out to determine the mass flow of the finest fly ash and toxic elements. These measurements were compared with EU emission directives for biomass co-incineration. It was possible to combust DW without operational problems. However, the DW was contaminated with lead, which tended to get strongly enriched in the fine fly ash. Pb tends to be adsorbed on the measurement line surfaces stronger than many other toxic elements and therefore proved difficult to collect and measure. Enrichment of Pb in the fine fly ash can be weakened by co-firing DW with PPR. Increasing the share of PPR up to 50% markedly reduces the toxic metal concentration in the finest fly ash. This, however, leads to increased mass flow of fine fly ash and increases the potential risks of operational problems such as bed agglomeration and fouling.
Original languageEnglish
Pages (from-to)1311-1321
Number of pages11
JournalBiomass and Bioenergy
Volume32
Issue number12
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

wood quality
fly ash
plant residue
plant residues
Flammability
biofuels
Demolition
Fly ash
pepper
demolition
Wood
Biomass
biomass
peppers
mass flow
fluidized beds
Fluidized beds
Boilers
Incineration
fluidization

Keywords

  • Biomass
  • Capsicum annuum
  • Fluidized bed
  • Heavy metals
  • Particulates
  • Toxic emissions

Cite this

Khan, A. A. ; Aho, Martti ; de Jong, W. ; Vainikka, Pasi ; Jansens, P. J. ; Spliethoff, H. / Scale-up study on combustibility and emission formation with two biomass fuels (B quality wood and pepper plant residue) under BFB conditions. In: Biomass and Bioenergy. 2008 ; Vol. 32, No. 12. pp. 1311-1321.
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abstract = "Combustion of two biomass fuels: demolition wood (DW) and pepper plant residue (PPR), was investigated from an emission viewpoint in a 20 kWth fluidized bubbling bed reactor and a 1 MWth fluidized bubbling bed test boiler. Fluidization velocity and boiler output were varied in the larger facility whereas they were kept constant in the smaller reactor. Traditional flue gases were analyzed. In addition, impactor measurements were carried out to determine the mass flow of the finest fly ash and toxic elements. These measurements were compared with EU emission directives for biomass co-incineration. It was possible to combust DW without operational problems. However, the DW was contaminated with lead, which tended to get strongly enriched in the fine fly ash. Pb tends to be adsorbed on the measurement line surfaces stronger than many other toxic elements and therefore proved difficult to collect and measure. Enrichment of Pb in the fine fly ash can be weakened by co-firing DW with PPR. Increasing the share of PPR up to 50{\%} markedly reduces the toxic metal concentration in the finest fly ash. This, however, leads to increased mass flow of fine fly ash and increases the potential risks of operational problems such as bed agglomeration and fouling.",
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Scale-up study on combustibility and emission formation with two biomass fuels (B quality wood and pepper plant residue) under BFB conditions. / Khan, A. A. (Corresponding Author); Aho, Martti; de Jong, W.; Vainikka, Pasi; Jansens, P. J.; Spliethoff, H.

In: Biomass and Bioenergy, Vol. 32, No. 12, 2008, p. 1311-1321.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Scale-up study on combustibility and emission formation with two biomass fuels (B quality wood and pepper plant residue) under BFB conditions

AU - Khan, A. A.

AU - Aho, Martti

AU - de Jong, W.

AU - Vainikka, Pasi

AU - Jansens, P. J.

AU - Spliethoff, H.

PY - 2008

Y1 - 2008

N2 - Combustion of two biomass fuels: demolition wood (DW) and pepper plant residue (PPR), was investigated from an emission viewpoint in a 20 kWth fluidized bubbling bed reactor and a 1 MWth fluidized bubbling bed test boiler. Fluidization velocity and boiler output were varied in the larger facility whereas they were kept constant in the smaller reactor. Traditional flue gases were analyzed. In addition, impactor measurements were carried out to determine the mass flow of the finest fly ash and toxic elements. These measurements were compared with EU emission directives for biomass co-incineration. It was possible to combust DW without operational problems. However, the DW was contaminated with lead, which tended to get strongly enriched in the fine fly ash. Pb tends to be adsorbed on the measurement line surfaces stronger than many other toxic elements and therefore proved difficult to collect and measure. Enrichment of Pb in the fine fly ash can be weakened by co-firing DW with PPR. Increasing the share of PPR up to 50% markedly reduces the toxic metal concentration in the finest fly ash. This, however, leads to increased mass flow of fine fly ash and increases the potential risks of operational problems such as bed agglomeration and fouling.

AB - Combustion of two biomass fuels: demolition wood (DW) and pepper plant residue (PPR), was investigated from an emission viewpoint in a 20 kWth fluidized bubbling bed reactor and a 1 MWth fluidized bubbling bed test boiler. Fluidization velocity and boiler output were varied in the larger facility whereas they were kept constant in the smaller reactor. Traditional flue gases were analyzed. In addition, impactor measurements were carried out to determine the mass flow of the finest fly ash and toxic elements. These measurements were compared with EU emission directives for biomass co-incineration. It was possible to combust DW without operational problems. However, the DW was contaminated with lead, which tended to get strongly enriched in the fine fly ash. Pb tends to be adsorbed on the measurement line surfaces stronger than many other toxic elements and therefore proved difficult to collect and measure. Enrichment of Pb in the fine fly ash can be weakened by co-firing DW with PPR. Increasing the share of PPR up to 50% markedly reduces the toxic metal concentration in the finest fly ash. This, however, leads to increased mass flow of fine fly ash and increases the potential risks of operational problems such as bed agglomeration and fouling.

KW - Biomass

KW - Capsicum annuum

KW - Fluidized bed

KW - Heavy metals

KW - Particulates

KW - Toxic emissions

U2 - 10.1016/j.biombioe.2008.03.011

DO - 10.1016/j.biombioe.2008.03.011

M3 - Article

VL - 32

SP - 1311

EP - 1321

JO - Biomass and Bioenergy

JF - Biomass and Bioenergy

SN - 0961-9534

IS - 12

ER -