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首页> 外文会议>ASME Gas Turbine India Conference >MULTI-SWIRL LEAN DIRECT INJECTION BURNER FOR ENHANCED COMBUSTION STABILITY AND LOW POLLUTANT EMISSIONS
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MULTI-SWIRL LEAN DIRECT INJECTION BURNER FOR ENHANCED COMBUSTION STABILITY AND LOW POLLUTANT EMISSIONS

机译：多旋瘦直喷燃烧器，用于增强燃烧稳定性和低污染物排放

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Control of emissions is a big challenge plaguing the gas turbine industry for years. This necessitates new combustor designs addressing the problem. This paper discusses the characterization of a novel burner~* employing Lean Direct Injection (LDI) technology for reduced pollutant emissions and improved combustion. The burner is an array of multiple swirlers arranged closely, facilitating distributed mixing of fuel and air at each swirler throughout the length of the burner. This results in a uniform and rapid mixing, thus eliminating hot spots and enabling efficient combustion. The burner thus developed is capable of operating at very lean conditions of fuel, leading to overall temperatures being low. The burner is characterized in terms of lean blow out equivalence ratio, pressure drop, average exit temperature of the burnt mixture, pattern factor and emissions-CO, CO_2, unburned hydrocarbon (UHC), NO_x and soot. Results show very low NO_x emissions. Enhanced combustion also results in reduction in overall emissions. It overcomes the drawback of flame flashback encountered in lean premixed pre-vaporized concept. LDI is also less susceptible to combustion instability. Pressure drop across the burner is observed to be very less compared to the conventional gas turbine combustors. Thus, this concept of multi-swirl LDI burner can be a potential contender to be employed in the combustors of gas turbine engines.
机译：排放控制是一项大挑战，多年来困扰燃气轮机行业。这需要新的燃烧器设计解决问题。本文讨论了采用精益直接注射（LDI）技术的新型燃烧器〜*的表征，减少污染物排放和改进的燃烧。燃烧器是一系列紧密排列的多个旋流器，促进在燃烧器的整个长度的每个旋流器中分布燃料和空气的分布式混合。这导致均匀且快速混合，从而消除热点并实现有效的燃烧。由此开发的燃烧器能够在非常精益的燃料条件下运行，导致总温度低。燃烧器的特征在于瘦吹除出等值比，压降，燃烧混合物的平均出口温度，图案因子和排放 - CO，CO_2，未燃烧的烃（UHC），NO_X和烟灰。结果显示出非常低的NO_X排放。增强的燃烧也导致整体排放量减少。它克服了精益预混的预汽化概念中遇到的火焰闪回的缺点。 LDI也易于燃烧不稳定的影响。与传统的燃气轮机燃烧器相比，观察到燃烧器穿过燃烧器的压降。因此，这种多旋流LDI燃烧器的这种概念可以是燃气涡轮发动机的燃烧器中采用的潜在争斗。

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