 Reducing the minimum load and NOx emissions for lignite-fired boiler by applying a stable-flame conceptToshikazu Tsumura, Hirofumi Okazaki, Pauli Dernjatin and Kati Savolainen Applied Energy, 2003, vol. 74, issue 3-4, 415-424 Abstract: For the purpose of improving the load range and NOx emission level of lignite-fired power plants, a new combustion technology, called NR-LE burners (NOx Reduction-Load Extension), has been developed in co-operation between Babcock-Hitachi and Fortum. A single-burner combustion test was performed in Japan with this new NR-LE type burner using Czech lignite. Adapting the flame-stabilization ring and a special additional air-nozzle resulted in achieving a stable flame, which enables: - The burner minimum load to be less than 50% (Boiler load: 30-40%) - Low NOx emissions of less than 200 mg/m3 (6% O2, dry base) The first commercial full-scale application of the NR-LE burner was by the IPP power producer in the Czech Republic (Sokolovská Uhelná, a.s. at Vresová Unit2 boiler with steam parameters 325 t/h, 535 °C, 13.5 MPa). The commissioning test runs of the new burners were carried out during September to October 2001. The boiler is now in commercial operation, with (i) a 30% minimum load without supplementary fuel, and (ii) lower NOx emission levels. Keywords: Lignite; coal; combustion; Low; NOx; burner; NOx; reduction; Minimum; load (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:74:y:2003:i:3-4:p:415-424 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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