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Application of LIBS and TMA for the determination of combustion predictive indices of coals and coal blends

机译：LIBS和TMA在确定煤及其混合物燃烧预测指标中的应用。

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摘要

Presented work brings results of Laser-Induced Breakdown Spectroscopy (LIBS) and Thermo-Mechanical Analysis (TMA) of coals and coal blends used in coal fired power plants all over Spain. Several coal specimens, its blends and corresponding laboratory ash were analyzed by mentioned techniques and results were compared to standard laboratory methods. The indices of slagging, which predict the tendency of coal ash deposition on the boiler walls, were determined by means of standard chemical analysis, LIBS and TMA. The optimal coal suitable to be blended with the problematic national lignite coal was suggested in order to diminish the slagging problems. Used techniques were evaluated based on the precision, acquisition time, extension and quality of information they could provide. Finally, the applicability of LIBS and TMA to the successful calculation of slagging indices is discussed and their substitution of time-consuming and instrumentally difficult standard methods is considered.
机译：提出的工作为整个西班牙燃煤电厂中使用的煤和煤混合物的激光诱导击穿光谱（LIBS）和热机械分析（TMA）带来了结果。通过上述技术分析了几个煤样，其混合物和相应的实验室灰分，并将结果与​​标准实验室方法进行了比较。通过标准化学分析，LIBS和TMA确定了预测炉壁上煤灰沉积趋势的排渣指数。提出了适合与有问题的国家褐煤混合的最佳煤种，以减少结渣问题。根据使用过的技术的准确性，获取时间，扩展性和信息质量，对它们进行评估。最后，讨论了LIBS和TMA在成功计算结渣指数中的适用性，并考虑了它们取代费时且仪器困难的标准方法。

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