Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat

Martti Aho

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

There is need to increase the portion of forest biomass in effective power plants. However, it must be done safely: examples of superheater damages exist. Maximum energy portion of wood biomass in its blends with different peats (and with one coal) was calculated with two indexes: molar S/Cl and molar (2S + Al) / Cl ratios. These indexes are based on the ability of sulphur (as So3) and aluminium silicates to destroy corrosive alkali chlorides in the power plant furnace before their entering to superheaters. It is possible to co-fire forest biomass at 50-90 % energy portion with peats. These results must be implemented carefully because for example calcium can weaken the power of sulphur and more research work would be needed to know better the importance of Ca.
Original languageEnglish
Title of host publicationBook of Proceedings
Subtitle of host publicationBioenergy from forest 2012
PublisherBenet Oy
Pages225-228
ISBN (Electronic)978-952-67890-0-2
Publication statusPublished - 2012
MoE publication typeB3 Non-refereed article in conference proceedings
EventBioenergy from Forest 2012 - Jyväskylä, Finland
Duration: 27 Aug 20121 Sep 2012

Conference

ConferenceBioenergy from Forest 2012
CountryFinland
CityJyväskylä
Period27/08/121/09/12

Fingerprint

Peat
Superheaters
Power plants
Biomass
Sulfur
Silicates
Calcium
Wood
Fires
Furnaces
Coal
Aluminum

Keywords

  • power plants
  • forest biomass
  • corrosion

Cite this

Aho, M. (2012). Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat. In Book of Proceedings: Bioenergy from forest 2012 (pp. 225-228). Benet Oy.
Aho, Martti. / Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat. Book of Proceedings: Bioenergy from forest 2012. Benet Oy, 2012. pp. 225-228
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Aho, M 2012, Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat. in Book of Proceedings: Bioenergy from forest 2012. Benet Oy, pp. 225-228, Bioenergy from Forest 2012, Jyväskylä, Finland, 27/08/12.

Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat. / Aho, Martti.

Book of Proceedings: Bioenergy from forest 2012. Benet Oy, 2012. p. 225-228.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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PY - 2012

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N2 - There is need to increase the portion of forest biomass in effective power plants. However, it must be done safely: examples of superheater damages exist. Maximum energy portion of wood biomass in its blends with different peats (and with one coal) was calculated with two indexes: molar S/Cl and molar (2S + Al) / Cl ratios. These indexes are based on the ability of sulphur (as So3) and aluminium silicates to destroy corrosive alkali chlorides in the power plant furnace before their entering to superheaters. It is possible to co-fire forest biomass at 50-90 % energy portion with peats. These results must be implemented carefully because for example calcium can weaken the power of sulphur and more research work would be needed to know better the importance of Ca.

AB - There is need to increase the portion of forest biomass in effective power plants. However, it must be done safely: examples of superheater damages exist. Maximum energy portion of wood biomass in its blends with different peats (and with one coal) was calculated with two indexes: molar S/Cl and molar (2S + Al) / Cl ratios. These indexes are based on the ability of sulphur (as So3) and aluminium silicates to destroy corrosive alkali chlorides in the power plant furnace before their entering to superheaters. It is possible to co-fire forest biomass at 50-90 % energy portion with peats. These results must be implemented carefully because for example calcium can weaken the power of sulphur and more research work would be needed to know better the importance of Ca.

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KW - forest biomass

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Aho M. Maximising the safe portion of forest biomass in power plants by utilising protective properties of peat. In Book of Proceedings: Bioenergy from forest 2012. Benet Oy. 2012. p. 225-228