PDPA studies on the effect of blockings and concentrators to the turbulence and particle concentration in a swirl burner

Yu Zhang*, Li Xing Zhou, Jian Zhang

*Corresponding author for this work

    Research output: Contribution to journalArticle

    Abstract

    To develop low-pollutant burners, the effect of inlet blocking on NO formation is studied. It is recognized that the NO formation is affected by the turbulence, coal concentration and temperature. In this paper, the turbulence and coal concentration in swirl burners with an inlet blocking or a coal concentrator were measured. A DANTEC-made 3-D phase-Doppler particle anemometer (PDPA) installed in the State key Lab. of Clean Coal Combustion is used to measure the particle velocity and concentration. The measurement results are compared with those obtained by numerical simulation. Both measurement and simulation results indicate that either the blocking or the coal concentrator increases the turbulent kinetic energy at the inlet region and the particle concentration in the near-axis region, which is favorable for reducing the NO emission during coal combustion.

    Original languageEnglish
    Pages (from-to)867-870
    Number of pages4
    JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
    Volume25
    Issue number5
    Publication statusPublished - Sep 2004

    Keywords

    • Coal combustion
    • Inlet blocking
    • NO formation
    • Particle concentration

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