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首页> 外文会议>燃焼シンポジウム >Effect of Wall Quenching of a Gas Turbine-like Combustor on Emission Characteristics of Ammonia/air Non-premixed Swirling Flames
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Effect of Wall Quenching of a Gas Turbine-like Combustor on Emission Characteristics of Ammonia/air Non-premixed Swirling Flames

机译：燃气轮机状燃烧器壁淬火对氨/空气非预混旋流火焰发射特性的影响

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This study simulated non-premixed turbulent ammonia (NH3)/air swirling flames in gas turbine-like combustor with an adiabatic and various isothermal wall conditions such as 1250 K, 900 K at an operating pressure of 0.5 MPa. The grid of combustor consisted of primary and secondary combustion zones which promise complete combustion even with rich flame combustion in the primary zone. Space and time averaged emissions were calculated and standardized into 16% O2 concentration at the combustor exit, and the study found that under adiabatic condition, NO emission attained a minimum value, in the order of 200 ppm, at a global equivalence ratio of 1.1 in the primary zone, with zero unburnt NH3 emission. However, this study found that wall temperature is very significant for the NH3/air complete combustion, because heat loss through the combustor wall leads to a lower concentration of OH radicals in the flame, even it results lower NO emissions.
机译：该研究模拟了燃气涡轮样燃烧器中的非预混湍流氨（NH3）/空气旋转火焰，其具有绝热和各种等温壁条件，例如1250k，900k，在操作压力为0.5MPa。燃烧器栅格包括初级和二级燃烧区，即使在主要区域中具有富含火焰燃烧的富含燃烧，也可以完全燃烧。计算空间和时间平均排放并将其标准化为燃烧器出口的16％O2浓度，并且研究发现，在绝热条件下，在全球等效率为1.1的全球等同率下，没有排放量为200ppm的最小值。主要区域，零Unburnt NH3发射。然而，这项研究发现，对于NH3 /空气完全燃烧，壁温非常显着，因为通过燃烧器壁的热量损失导致火焰中的oh自由基的较低浓度，即使它也不会降低排放。

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