Application of Gas Chromatography Mass Spectrometry in Tar Analysis from Underground Gasification
نویسندگان
چکیده
The study of tar behaviors in underground coal gasification (UCG) is essential for pollution control, system safety and conversion efficiency; however, existing studies have only focused on products without revealing evolution the reaction zone, experimental conditions reported work are far from those real situation. In this work, were studied with a self-developed apparatus to simulate UCG process. During experiments, sampling method along channel was used collect at different positions; object large raw block 460 mm × 230 size, flow rate inlet gas adjusted according composition products. samples not taken outlet, but also then analyzed using chromatography mass spectrometry. For all samples, C15H13N its isomer most abundant compounds, total percentage greater than 14%. Most top five chemicals contained more nine carbon atoms their molecular formulae, indicating that heavy light formed by low-temperature pyrolysis. Compared upstream tar, downstream had fewer PAHs lower boiling point, due decomposition tar. element fluorine (F) outlet tars, remaining zone cannot be evaluated monitoring
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ژورنال
عنوان ژورنال: Separations
سال: 2022
ISSN: ['2297-8739']
DOI: https://doi.org/10.3390/separations10010012