School of Earth, Atmospheric and Environmental Science, University of Manchester, Manchester M13 9PL, United Kingdom.
Environ Sci Technol. 2012 Oct 2;46(19):10812-9. doi: 10.1021/es301899s. Epub 2012 Sep 13.
The work characterizes the changes in volatile and semivolatile PM emissions from a gas turbine engine resulting from burning alternative fuels, specifically gas-to-liquid (GTL), coal-to-liquid (CTL), a blend of Jet A-1 and GTL, biodiesel, and diesel, to the standard Jet A-1. The data presented here, compares the mass spectral fingerprints of the different fuels as measured by the Aerodyne high resolution time-of-flight aerosol mass spectrometer. There were three sample points, two at the exhaust exit plane with dilution added at different locations and another probe located 10 m downstream. For emissions measured at the downstream probe when the engine was operating at high power, all fuels produced chemically similar organic PM, dominated by C(x)H(y) fragments, suggesting the presence of long chain alkanes. The second largest contribution came from C(x)H(y)O(z) fragments, possibly from carbonyls or alcohols. For the nondiesel fuels, the highest loadings of organic PM were from the downstream probe at high power. Conversely, the diesel based fuels produced more organic material at low power from one of the exit plane probes. Differences in the composition of the PM for certain fuels were observed as the engine power decreased to idle and the measurements were made closer to the exit plane.
该工作描述了燃气涡轮发动机燃烧替代燃料（具体为天然气制油（GTL）、煤制油（CTL）、Jet A-1 与 GTL 的混合物、生物柴油和柴油）时，其挥发性和半挥发性颗粒物质排放的变化情况，这些替代燃料与标准的 Jet A-1 燃料有所不同。这里呈现的数据通过 Aerodyne 高分辨率飞行时间气溶胶质谱仪对不同燃料的质谱指纹图谱进行了比较。在三个采样点中，有两个位于排气出口平面，在不同位置添加了稀释剂，另一个探头位于下游 10 米处。当发动机以高功率运行时，在下游探头测量的排放物中，所有燃料都产生了化学性质相似的有机颗粒物质，主要由 C(x)H(y)片段组成，这表明存在长链烷烃。第二大贡献来自 C(x)H(y)O(z)片段，可能来自羰基或醇类。对于非柴油燃料，在高功率时，从下游探头获得的有机颗粒物质的负荷最高。相反，基于柴油的燃料在低功率下从出口平面探头之一产生了更多的有机物质。当发动机功率降低到怠速时，观察到某些燃料的 PM 组成存在差异，并且测量值更接近出口平面。
