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  4. Optimization of the fractional collection efficiencies for electrostatic precipitators used in biomass-fired boilers
 
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2020
Journal Article
Title

Optimization of the fractional collection efficiencies for electrostatic precipitators used in biomass-fired boilers

Abstract
Electrostatic precipitators (ESPs) are commonly used for dust removal in flue gases from biomass-fired boilers. ESPs are able to precipitate the PM10 fraction (Nussbaumer, 2010) [1]. According to literature, ESPs have are duced fractional collection efficiency (FCE) in the range of 0.2-2 mm with a minimum at about 0.7 mm (Kaltschmitt et al., 2016; Fritz and Kern, 1992; Lützke and Wilkes, 1981) [2-4]. In the research project ""Optimization of the fractional collection efficiencies for electrostatic precipitators used in biomass-fired boilers(FRESBI)"" the FCEs for three commercial available ESPs (OekoTube Inside - Co. Oekosolve, Filterbox S - Co. Schraeder, Filterbox 2K - Co. Schraeder) were examined. The particle size distributions in the flue gas were measured using a Scanning Mobility Particle Sizer (SMPS) and a 13 stage Dekati® Low Pressure Impactor (DLPI).The combination of both measuring methods was a successful setup with various symbiotic effects. Additionally a mathematic model for the prediction of the FCEs of tubular ESPs was developed und successfully validated. For two ESPs (OekoTube Inside and Filterbox S) optimization measures were implemented, tested and evaluated. The applied measures focused on the optimization of the electrical field strength, hence increasing the performance of the ESPs. For the Filterbox S an increased FCE was achieved.
Author(s)
Oischinger, Jürgen  orcid-logo
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Steiner, Michael
Ostbayerische Technische Hochschule (OTH) Amberg-Weiden
Meiller, Martin  orcid-logo
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Hebauer, M.
Beer, S.
Daschner, Robert  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Hornung, Andreas  orcid-logo
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Kramb, J.
Journal
Biomass and bioenergy  
DOI
10.1016/j.biombioe.2020.105703
Language
English
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Keyword(s)
  • electrostatic precipitator

  • fractional collection efficiency

  • biomass-fired boiler

  • wood chips

  • particulate matter

  • fine dust

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