Utilisation of ashes from co-combustion of peat and wood

Case study of a modern CFB-boiler in Finland

Kirsi Korpijärvi, Risto Ryymin, Tero Saarno, Matti Reinikainen, Mikko Räisänen

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

Abstract

Approximately 500 000 tons of peat and biomass ashes are produced yearly in Finland as by-product of energy production. About half of those are utilised and the rest are placed to landfill sites because options for recycling have not been found. From the beginning of the year 2011 the waste tax was extended to fly ashes. Rising of costs forces power plant owners to search new opportunities to recycle ashes. Possibilities to utilise ashes were studied through a case study of a modern peat and wood fuelled CFB-boiler. Ash samples were analysed and their environmental and technical applicability for fertilizers, earth construction and concrete production were evaluated. Refining experiments were also performed to improve ash suitability for recycling and to find new options for ash use. Main results of the project are presented in the paper.
Original languageEnglish
Title of host publicationProceedings of Ash Utilisation 2012, Ashes in a Sustainable Society
Place of PublicationStockholm
Publication statusPublished - 2012
MoE publication typeNot Eligible
EventASH Utilisation 2012: Ashes in a Sustainable Society - Stockholm, Sweden
Duration: 25 Jan 201227 Jan 2012

Conference

ConferenceASH Utilisation 2012
CountrySweden
CityStockholm
Period25/01/1227/01/12

Fingerprint

peat
ash
combustion
recycling
fly ash
boiler
landfill
power plant
fertilizer
biomass
cost
experiment

Keywords

  • combustion
  • peat
  • wood
  • ash utilisation
  • fly ash
  • ash refining

Cite this

Korpijärvi, K., Ryymin, R., Saarno, T., Reinikainen, M., & Räisänen, M. (2012). Utilisation of ashes from co-combustion of peat and wood: Case study of a modern CFB-boiler in Finland. In Proceedings of Ash Utilisation 2012, Ashes in a Sustainable Society Stockholm.
Korpijärvi, Kirsi ; Ryymin, Risto ; Saarno, Tero ; Reinikainen, Matti ; Räisänen, Mikko. / Utilisation of ashes from co-combustion of peat and wood : Case study of a modern CFB-boiler in Finland. Proceedings of Ash Utilisation 2012, Ashes in a Sustainable Society. Stockholm, 2012.
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abstract = "Approximately 500 000 tons of peat and biomass ashes are produced yearly in Finland as by-product of energy production. About half of those are utilised and the rest are placed to landfill sites because options for recycling have not been found. From the beginning of the year 2011 the waste tax was extended to fly ashes. Rising of costs forces power plant owners to search new opportunities to recycle ashes. Possibilities to utilise ashes were studied through a case study of a modern peat and wood fuelled CFB-boiler. Ash samples were analysed and their environmental and technical applicability for fertilizers, earth construction and concrete production were evaluated. Refining experiments were also performed to improve ash suitability for recycling and to find new options for ash use. Main results of the project are presented in the paper.",
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Korpijärvi, K, Ryymin, R, Saarno, T, Reinikainen, M & Räisänen, M 2012, Utilisation of ashes from co-combustion of peat and wood: Case study of a modern CFB-boiler in Finland. in Proceedings of Ash Utilisation 2012, Ashes in a Sustainable Society. Stockholm, ASH Utilisation 2012, Stockholm, Sweden, 25/01/12.

Utilisation of ashes from co-combustion of peat and wood : Case study of a modern CFB-boiler in Finland. / Korpijärvi, Kirsi; Ryymin, Risto; Saarno, Tero; Reinikainen, Matti; Räisänen, Mikko.

Proceedings of Ash Utilisation 2012, Ashes in a Sustainable Society. Stockholm, 2012.

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

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T1 - Utilisation of ashes from co-combustion of peat and wood

T2 - Case study of a modern CFB-boiler in Finland

AU - Korpijärvi, Kirsi

AU - Ryymin, Risto

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AU - Reinikainen, Matti

AU - Räisänen, Mikko

N1 - Project code: 36521

PY - 2012

Y1 - 2012

N2 - Approximately 500 000 tons of peat and biomass ashes are produced yearly in Finland as by-product of energy production. About half of those are utilised and the rest are placed to landfill sites because options for recycling have not been found. From the beginning of the year 2011 the waste tax was extended to fly ashes. Rising of costs forces power plant owners to search new opportunities to recycle ashes. Possibilities to utilise ashes were studied through a case study of a modern peat and wood fuelled CFB-boiler. Ash samples were analysed and their environmental and technical applicability for fertilizers, earth construction and concrete production were evaluated. Refining experiments were also performed to improve ash suitability for recycling and to find new options for ash use. Main results of the project are presented in the paper.

AB - Approximately 500 000 tons of peat and biomass ashes are produced yearly in Finland as by-product of energy production. About half of those are utilised and the rest are placed to landfill sites because options for recycling have not been found. From the beginning of the year 2011 the waste tax was extended to fly ashes. Rising of costs forces power plant owners to search new opportunities to recycle ashes. Possibilities to utilise ashes were studied through a case study of a modern peat and wood fuelled CFB-boiler. Ash samples were analysed and their environmental and technical applicability for fertilizers, earth construction and concrete production were evaluated. Refining experiments were also performed to improve ash suitability for recycling and to find new options for ash use. Main results of the project are presented in the paper.

KW - combustion

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KW - wood

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KW - fly ash

KW - ash refining

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CY - Stockholm

ER -

Korpijärvi K, Ryymin R, Saarno T, Reinikainen M, Räisänen M. Utilisation of ashes from co-combustion of peat and wood: Case study of a modern CFB-boiler in Finland. In Proceedings of Ash Utilisation 2012, Ashes in a Sustainable Society. Stockholm. 2012