1 Ocak 2020 Dergi makalesi Açık Erişim

Raheem, Duygu Gunduz; Yilmaz, Baris; Kayahan, Ufuk; Ozdogan, Sibel

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/89255</identifier>
  <creators>
    <creator>
      <creatorName>Raheem, Duygu Gunduz</creatorName>
      <givenName>Duygu Gunduz</givenName>
      <familyName>Raheem</familyName>
    </creator>
    <creator>
      <creatorName>Yilmaz, Baris</creatorName>
      <givenName>Baris</givenName>
      <familyName>Yilmaz</familyName>
      <affiliation>Marmara Univ, Dept Mech Engn, Fac Engn, Goztepe Campus, TR-34722 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Kayahan, Ufuk</creatorName>
      <givenName>Ufuk</givenName>
      <familyName>Kayahan</familyName>
      <affiliation>TUBITAK Marmara Res Ctr, Energy Inst, TR-41470 Kocaeli, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Ozdogan, Sibel</creatorName>
      <givenName>Sibel</givenName>
      <familyName>Ozdogan</familyName>
      <affiliation>Marmara Univ, Dept Mech Engn, Fac Engn, Goztepe Campus, TR-34722 Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Effect Of Recycled Flue Gas Ratio On Combustion Characteristics Of Lignite Oxy-Combustion In A Circulating Fluidized Bed</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/89255</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1021/acs.energyfuels.0c02464</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">Oxy-combustion and oxygen-enriched combustion appear as promising options for CO2 capture. In this study, the effect of the recycled flue gas (RFG) ratio on lignite oxy-combustion has been experimentally studied in comparison with oxygen-enriched (O-2/N-2) combustion in a 30 kW h circulating fluidized bed reactor. Oxygen concentrations range from 21 to 28% for both cases, while RFG ratios vary between 0.72 and 0.63 in the oxy-combustion case. The influence of oxygen concentration in the combustion atmosphere on temperature, gaseous emissions, and carbon-based combustion efficiency were investigated by keeping the excess oxygen ratio constant at 1.45 for all cases. Temperatures in the combustor increase with increasing O-2 concentration. CO2 emissions are much higher in O-2/RFG combustion. CO and N2O emissions decrease with O-2 enrichment, while NO and SO2 emissions are promoted for both modes. Under O-2/RFG mode, CO, NO, N2O, and SO2 mass concentrations (mg/MJ) are lower compared to O-2/N-2 mode. Higher oxygen concentrations increase combustion efficiencies for both cases. Similar O-2 concentrations result in similar combustion efficiencies. Oxy-combustion results are considered as the most favorable option for CO2 capture along with the competitive combustion efficiencies and less emissions per unit energy.</description>
  </descriptions>
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