Abstract The pyrolysis of solid fossil fuels and biomass is of great relevance, because it influences the combustion kinetics of these fuels, and the pyrolysis products are potential raw materials for further chemical processing. The aim of this work was to develop a pyrolysis system able to separate the whole variety of pyrolysis products during one pyrolysis experiment without the need to replace GC columns for improved resolution. A conventional pyrolysis system equipped with a coupled gas chromatography (GC)/mass spectrometry (MS) detector was extended by a second GC with a fused-silica capillary column and a thermal conductivity detector (TCD). The coupled pyrolysis–GC/MS–GC/TCD system was used to investigate the evolved pyrolysis products of two lignites and a hard coal enabling the qualitative detection of pyrolyzates (GC/MS) while simultaneously quantifying the light gases (TCD). Benzofuran, catechol, and a preference for even-numbered hydrocarbon pyrolyzates in addition to a higher pristene/heptadecane ratio were found to be characteristic for the two studied German lignites in comparison to the Columbian hard coal as well as a higher release of especially oxygen-containing light gases.

中文翻译：

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采用热解-GC/MS-GC/TCD 同时分析由褐煤和硬煤产生的轻气体和重热解物

摘要 固体化石燃料和生物质的热解具有重要意义，因为它影响这些燃料的燃烧动力学，热解产物是进一步化学加工的潜在原料。这项工作的目的是开发一种热解系统，能够在一次热解实验中分离各种热解产物，而无需更换 GC 柱以提高分辨率。配备有耦合气相色谱 (GC)/质谱 (MS) 检测器的传统热解系统通过带有熔融石英毛细管柱和热导检测器 (TCD) 的第二个 GC 进行扩展。耦合热解-GC/MS-GC/TCD 系统用于研究两种褐煤和一种硬煤的热解产物，从而实现热解产物的定性检测 (GC/MS)，同时量化轻气体 (TCD)。研究发现，与哥伦比亚硬煤相比，这两种研究的德国褐煤具有苯并呋喃、儿茶酚和对偶数烃热解物的偏好以及更高的原始/十七烷比的特征，以及更高的氧释放量。含有轻气体。