Bituminous coal combustion in a full-scale start-up ignition burner: Influence of the excess air ratio

Chunlong Liu, Zhengqi Li, Weiguang Kong, Yang Zhao and Zhichao Chen

Energy, 2010, vol. 35, issue 10, 4102-4106

Abstract: A start-up ignition burner has been proposed to reduce oil fuel consumption during the firing-up process and partial-load operation. To investigate the influence of different excess air ratios on bituminous coal combustion in the start-up ignition burner, full-scale reacting-flow experiments were performed for an experiment setup. The ignition burner was identical to that normally used in an 800 MWe utility boiler. Gas temperature distributions in the burner were obtained for excess air ratios of 0.56, 0.75, 0.98 and 1.14 (corresponding to primary air velocities of 17, 23, 30 and 35 m/s). Coal burnout and the release of C and H were observed at the exit of the burner nozzle. Gases such as O2 and CO were measured at the center of the burner. A change in resistance was obtained within the burner.

Keywords: Start-up ignition burner; Coal-burning utility boiler; Excess air ratio; Primary air velocity (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:35:y:2010:i:10:p:4102-4106

DOI: 10.1016/j.energy.2010.06.023

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