1 Ocak 2020 Dergi makalesi Açık Erişim

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

Citation Style Language JSON

{
  "DOI": "10.1021/acs.energyfuels.0c02464", 
  "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.", 
  "author": [
    {
      "family": "Raheem", 
      "given": " Duygu Gunduz"
    }, 
    {
      "family": "Yilmaz", 
      "given": " Baris"
    }, 
    {
      "family": "Kayahan", 
      "given": " Ufuk"
    }, 
    {
      "family": "Ozdogan", 
      "given": " Sibel"
    }
  ], 
  "container_title": "ENERGY & FUELS", 
  "id": "89255", 
  "issue": "11", 
  "issued": {
    "date-parts": [
      [
        2020, 
        1, 
        1
      ]
    ]
  }, 
  "page": "14786-14795", 
  "title": "Effect of Recycled Flue Gas Ratio on Combustion Characteristics of Lignite Oxy-Combustion in a Circulating Fluidized Bed", 
  "type": "article-journal", 
  "volume": "34"
}