Research of the Gases Return Possibility during the Process of Lignite Combustion at Kosovo B Power Plant

4056aa6a-a7c2-436c-aae6-4bcf1989e28920250730091654969wseas:wseasmdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT2224-34961790-507910.37394/232015http://wseas.org/wseas/cms.action?id=4031110202511020252110.37394/232015.2025.21https://wseas.com/journals/ead/2025.phpResearch of the Gases Return Possibility during the Process of Lignite Combustion at Kosovo B Power PlantZarife BajraktariGashiDepartment of Materials and Metallurgy, University ‘’Isa Boletini’ Mitrovica, St.Ukshin Kovacica, 40 000, Mitrovica, KOSOVOMimoza KovaciAzemiDepartment of Materials and Metallurgy, University ‘’Isa Boletini’ Mitrovica, St.Ukshin Kovacica, 40 000, Mitrovica, KOSOVOLeartaKutllovciDepartment of Materials and Metallurgy, University ‘’Isa Boletini’ Mitrovica, St.Ukshin Kovacica, 40 000, Mitrovica, KOSOVOAgnesaKuqiDepartment of Materials and Metallurgy, University ‘’Isa Boletini’ Mitrovica, St.Ukshin Kovacica, 40 000, Mitrovica, KOSOVOMihaneBilalliDepartment of Materials and Metallurgy, University ‘’Isa Boletini’ Mitrovica, St.Ukshin Kovacica, 40 000, Mitrovica, KOSOVOThe paper presents research on the implementation of flue gas recirculation (FGR) in the Kosovo B lignite Power Plant, which aims to reduce pollutant emissions and improve combustion efficiency. During the research, we managed to determine that the temperature of the flue gases at the boiler outlet reaches up to 950°C during standard operation, where SO₂ , CO, NOₓ, and CO₂ are identified as the dominant gases emitted. Continuous monitoring of emissions in the stack reveals high levels of CO, CO₂ , SO₂ , and NOₓ. Parallel measurements of ambient air quality in the vicinity of the power plant confirm the distribution of these pollutants. The measured concentrations are evaluated in accordance with European Directive 2008/50/EC to assess compliance with EU air quality standards. The lignite used in the combustion process has a low calorific value (LHV) of 8197kJ/kg and contains significant amounts of metallic elements, including Fe, FeS2, Zn, Pb, Cu, and Cd. The combustion residues - ash and slag - consist mainly of complex metal oxides. 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