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Measurements of temperature and gas composition within the burning bed of wet woody residues in a 4 MW moving grate boiler
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Luleå University of Technology.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.
2016 (English)In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 152, 438-445 p.Article in journal (Refereed) Published
Abstract [en]

Moving grate firing systems are widely used for biomass combustion. The characteristics of the fuel bed combustion in moving grate boilers are of practical interest as they are directly related to the release of pollutants and affect the furnace efficiency. Measurements of temperature and gas species concentrations inside the fuel bed are necessary to improve our understanding of the highly complex processes involved in biomass combustion.There have been few experimental studies of the fuel bed of industrial scale grate furnaces. The present study measured temperature and gas species concentrations within a thick burning bed of wet woody biomass, in a  4 MW reciprocating grate boiler. Measurements were carried out under three different operating conditions through ports located in the wall of the furnace using a stainless steel probe incorporating a thermocouple. Temperatures of about 1000 °C were measured close to the grate, indicating intense combustion at the bottom of the fuel bed. The temperature distribution along the bed height showed that different stages of the combustion process take place in horizontally adjacent layers along the grate. Higher flow rates of the primary air resulted in relatively higher CO and lower CO2 and NO concentrations in the fuel bed.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 152, 438-445 p.
Keyword [en]
Combustion
National Category
Energy Engineering
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-55137DOI: 10.1016/j.fuproc.2016.07.011ISI: 000381950200050OAI: oai:DiVA.org:lnu-55137DiVA: diva2:951264
Available from: 2016-08-08 Created: 2016-08-08 Last updated: 2017-05-29Bibliographically approved

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Razmjoo, NargesSefidari, HamidStrand, Michael
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf