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Liu, T., Wang, Y.G., Zou, L., Bai, Y.Y., Shen, T., Wei, Y.W., Li, F.X. and Zhao, Q.X. (2024) Numerical Investigation of Stable Combustion at Ultra-Low Load for a 350 MW Wall Tangentially Fired Pulverized-Coal Boiler: Effect of Burner Adjustments and Methane Co-Firing. Applied Thermal Engineering, 246, Article 122980.
https://doi.org/10.1016/j.applthermaleng.2024.122980

has been cited by the following article:

• TITLE: A Study on the Performance of a New-Type Swirl-Stabilized Combustor for Enhancing Boiler Low-Load Stable Combustion Capability

  AUTHORS: Hongjun Li

  KEYWORDS: Swirl-Stabilized Combustor, Interstitial Air, Low-Load Combustion Stability, Gas-Particle Flow Properties, Central Recirculation Zone

  JOURNAL NAME: Energy and Power Engineering, Vol.18 No.8, August 3, 2026

  ABSTRACT: This study experimentally investigates the gas-particle two-phase flow characteristics of an old-model burner (OMB) and a new-type swirl-stabilized combustor (NTSTC) designed for a 350 MW opposed-fired coal boiler. Using a particle dynamic anemometry (PDA) system, the three-dimensional velocity field, turbulence intensity, and particle volume flux at the burner outlet were measured at nominal load cases spanning 20% - 100%. The results show that the NTSTC forms a distinct central recirculation zone (RZ) in the near-nozzle region (x/d = 0.1 - 0.5), where the axial velocity exhibits a bimodal distribution and the radial velocity indicates centripetal particle movement near r/d ≈ 0.2. These characteristics persist at low loads and promote particle residence and central accumulation. Compared with the OMB, the NTSTC exhibits higher turbulence intensity within central RZ and stronger gas-particle mixing, including 20% load. The particle volume flux results further demonstrate central particle enrichment and particle backflow within the RZ. Overall, the NTSTC provides more favorable near-field gas-particle flow organization and better aerodynamic adaptability to load variation. The present study is limited to cold-flow measurements; combustion efficiency, gas composition, and NOx emissions were not directly evaluated.