Analysis of the processes in fluidized bed boiler furnaces during load changes

Marko Huttunen, Juho Peltola, Sirpa Kallio, Karvonen Lassi, Timo Niemi, Ville Ylä-Outinen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Due to increased share of intermittent renewable energy production, flexibility demands for boiler based energy production have increased in the form of required faster ramp rates and lower allowed minimum loads. To illustrate the effects of changes in boiler load, the present paper focuses on analysis of furnace processes in bubbling fluidized bed (BFB) and circulating fluidized bed (CFB) combustion during a load change. Computational fluid dynamic (CFD) modeling is used as the analysis tool. The paper illustrates by means of simulations what changes take place in the temperature and composition distributions. The effects on emissions are also analyzed in the case of the BFB boiler. The differences between CFB and BFB furnaces in their capability to respond to load change demands are discussed.
Original languageEnglish
Pages (from-to)580-587
Number of pages8
JournalEnergy Procedia
Volume120
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Fluidized beds
Boilers
Furnaces
Fluidized bed furnaces
Fluidized bed combustion
Computational fluid dynamics
Chemical analysis
Temperature

Keywords

  • CFD modeling
  • dynamic
  • CFB
  • BFB
  • combustion

Cite this

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title = "Analysis of the processes in fluidized bed boiler furnaces during load changes",
abstract = "Due to increased share of intermittent renewable energy production, flexibility demands for boiler based energy production have increased in the form of required faster ramp rates and lower allowed minimum loads. To illustrate the effects of changes in boiler load, the present paper focuses on analysis of furnace processes in bubbling fluidized bed (BFB) and circulating fluidized bed (CFB) combustion during a load change. Computational fluid dynamic (CFD) modeling is used as the analysis tool. The paper illustrates by means of simulations what changes take place in the temperature and composition distributions. The effects on emissions are also analyzed in the case of the BFB boiler. The differences between CFB and BFB furnaces in their capability to respond to load change demands are discussed.",
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Analysis of the processes in fluidized bed boiler furnaces during load changes. / Huttunen, Marko; Peltola, Juho; Kallio, Sirpa; Lassi, Karvonen; Niemi, Timo; Ylä-Outinen, Ville.

In: Energy Procedia, Vol. 120, 2017, p. 580-587.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Huttunen, Marko

AU - Peltola, Juho

AU - Kallio, Sirpa

AU - Lassi, Karvonen

AU - Niemi, Timo

AU - Ylä-Outinen, Ville

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