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首页> 外文期刊>Atmospheric environment >Gaseous SO3 and H2SO4 in the exhaust of an aircraft gas turbine engine: measurements by CIMS and implications for fuel sulfur conversion to sulfur (VI) and conversion of SO3 to H2SO4
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Gaseous SO3 and H2SO4 in the exhaust of an aircraft gas turbine engine: measurements by CIMS and implications for fuel sulfur conversion to sulfur (VI) and conversion of SO3 to H2SO4

机译：飞机燃气涡轮发动机排气中的气态SO3和H2SO4：通过CIMS测量以及对燃料硫转化为硫（VI）以及SO3转化为H2SO4的影响

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An estimation of the conversion efficiency (epsilon) of fuel sulfur to SO3 and H2SO4, where epsilon = ([SO3] + [H2SO4])/[S-T] and [S-T] is the total sulfur atom concentration in the exhaust at the exit of an aircraft gas-turbine combustor, was derived from measurements by comparison with model results. The major results of the presented CIMS experiments and their interpretation with a model simulation are: (i) The efficiency is epsilon = 2.3 +/- 1% at an exhaust age of about 5 ms from the combustor exit; (ii) The SO3 molecules represent a major fraction of sulfur (VI) gases epsilon(A)< 50% and an essential SO3- conversion to H2SO4 takes place in the sampling line where the exhaust gases spend a sufficiently long time and where the temperature is lower than in the hot exhaust. The coincidence of epsilon from our work (measurements with the sampling point in the exhaust just behind the combustor exit) and epsilon the measurements in an exhaust at a plume age of about 1 s suggests that the sulfur (VI) formation is inefficient in the post-combustor flow inside the aircraft engine. (C) 2003 Elsevier Ltd. All rights reserved. [References: 31]
机译：燃料硫向SO3和H2SO4的转化效率（ε）的估算值，其中epsilon =（[SO3] + [H2SO4]）/ [ST]和[ST]是废气出口处总硫原子浓度。通过将测量结果与模型结果进行比较，得出了飞机的燃气轮机燃烧室。提出的CIMS实验及其模型模拟结果的主要结果是：（i）在燃烧室出口约5 ms的排气年龄处，效率为epsilon = 2.3 +/- 1％； （ii）SO3分子代表了大部分ε（A）<50％的硫（VI）气体，并且在采样管线中发生了必要的SO3-向H2SO4的转化，在该采样管线中，废气花费了足够长的时间并且温度低于热排气。我们的工作中的ε值（燃烧室出口后面的排气采样点处的测量值）与烟羽年龄约为1 s的排气中ε值的测量值相吻合，这表明后期的硫（VI）形成效率低下燃烧器在飞机发动机内部流动。 （C）2003 Elsevier Ltd.保留所有权利。 [参考：31]

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