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Combustion and particulate I/SVOC characteristics of an aero-engine combustor with dual-stage under operational power and injection pressure

Author

Listed:
  • Liang, Zhirong
  • Liu, Haoye
  • Han, Zhangliang
  • Fan, Yukun
  • Lei, Lei

Abstract

The combustion and particulate intermediate-volatile/semi-volatile organic compound (I/SVOC) emission characteristics of a technology of low emission stirred swirl aero-engine combustor, which was operated under dual combustion stages of diffusion and premixed-dominant combustion have been investigated. The operational conditions of the combustor were combustor power (7 %–100 %) and injection pressure (IP, 1.5–6.0 MPa). Initially, the ignition and extinction boundary regions were identified, and within the ignition region, the emitted I/SVOCs were comprehensively resolved via a two-dimensional gas chromatography-time of flight mass spectrometer (GC × GC-ToFMS). It is found that I/SVOCs were remarkable under diffusion combustion, and reduced significantly by 61 % under premixed-dominant combustion (at 3.0 MPa IP). Besides, I/SVOCs were suppressed prominently by 49 % as IP increased from 1.5 MPa to 6.0 MPa (at 30 % combustor power). Based on the Response Surface Method (RSM), a model has been established to simulate the particulate I/SVOCs. The simulation model reveals that high Power-IP (100 % power, 6 MPa IP) could reduce I/SVOCs maximally by 84 %, 78 % and 56 % for n-alkanes, cycloalkanes and PAHs, respectively in comparison with low Power-IP (30 % power, 1.5 MPa IP). The essence of the findings reveals that domination of premixed combustion with promotional atomization inhibits aviation-emitted organic particles effectively.

Suggested Citation

  • Liang, Zhirong & Liu, Haoye & Han, Zhangliang & Fan, Yukun & Lei, Lei, 2024. "Combustion and particulate I/SVOC characteristics of an aero-engine combustor with dual-stage under operational power and injection pressure," Energy, Elsevier, vol. 302(C).
    • Handle: RePEc:eee:energy:v:302:y:2024:i:c:s036054422401569x
    DOI: 10.1016/j.energy.2024.131796
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