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    STUDIA AMBIENTUM - Ediţia nr.1-2 din 2012  
         
  Articol:   SPECIFIED EMISSION FACTORS ESTIMATION FOR MAJOR LIGNITE POWER PLANTS IN ROMANIA.

Autori:  MIHAELA NEAGU, DANIELA LUMINIŢA MOVILEANU, ION ONUŢU.
 
       
         
  Rezumat:   Climate change is a major global issue which is assigned to the greenhouse gas (GHG) effect. Coal continues to be the most widely used fuel for electricity and heat generation in Romanian power plants. CO2 is the main greenhouse gas emitted by coal combustion. Along with CO2, nitrogen dioxide (NO2) and sulphur dioxide (SO2) are other major combustion –generated pollutants from coal – fired power plants. Emission factors are cost-effective means for the development of emission inventories and control strategies.The aim of the present study is to estimate the specified emission factor for several pollutants emitted from four lignite-coal power plants in Romania, namely Turceni, Rovinari, Craiova 2, and Işalniţa. The major gaseous emissions (e.g. sulphur dioxides, nitrogen dioxides and carbon dioxide) generated from lignite-fired power plants in Romania are estimated based on Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas Inventories. The estimations were made for each of the four plants that produced electricity in 2010 as the fired lignite composition in these power plants is quite different from mine exploitation to another. Calculations for estimating the emission factor for nitrogen and sulphur oxides have been made. The coal composition and characteristics (i.e. the total sulphur content and lower heating value) greatly affect the emission of SO2. The calculation procedure of the NO2 emission factor included many factors. A short list of the factors that influence the fuel and thermal NO2 emissions comprise: fuel nitrogen content, volatile fuel content, combustion boiler type, specific flue gas volume, reduction efficiency of primary measures, lower heating value, etc.

Key words: lignite, specified emissions factor, carbon dioxide, sulphur dioxides, nitrogen dioxides
 
         
     
         
         
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