Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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The Combustion Characteristics of a New Cyclone Jet Hybrid Combustor for Low Pollutant Emission and High Flame Stability

저공해와 고안정성을 위한 신개념의 사이클론 제트 하이브리드 연소기의 연소특성

  • 정원석 (인하대학교 대학원 기계공학과) ;
  • 황철홍 (인하대학교 대학원 기계공학과) ;
  • 이규영 (인하전문대학 자동차공학과) ;
  • 이창언 (인하대학교 기계공학과)
  • Published : 2004.02.01
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Abstract

A Promising new approach to achieve low pollutant emissions and improvement of flame stability is tested experimentally using a cyclone jet hybrid combustor employing both premixed and diffusion combustion mode. Three kinds of nozzle are tested for mixing enhancement of fuel and air. The LNG (Liquified Natural Gas) is used as a fuel. The combustor is operated by two methods. One is DC (Diffusion Combustion) mode generated swirl flow by air as general swirl combustor, and the other is HC (Hybrid Combustion) mode. The HC mode consists of diffusion jet flame of axial direction and premixed cyclone flame of tangential direction in order to stabilized the diffusion jet flame. The results showed that the flame stability of HC mode is significantly enhanced than that of DC mode through the change of mixing characteristics by modifications of fuel nozzle. In addition, the reductions of CO and NOx emission in HC mode, as compared with that for the DC mode, is large than about 50% in stable region. Also, even using the low calorific fuel as $CO_2$-blended gas, it is identified that the cyclone jet hybrid combustor has the high performance of flame stability.

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References

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