The presented paper examines the feasibility of the application of micro-TG for the sake of proximate analysis of coal. It is aimed to develop a reliable and versatile procedure which allows to determine the content of each coal constituent during one experimental run. Among several investigated factors (i.e. temperature, heating rate, residence time, etc.), a special focus is given to the procedure of purging the TG furnace, which is claimed to be a possible source of erroneous moisture content determination. Analysis performed for nine samples indicates that the proposed method provides results close to these given by standardized approach, while discrepancies in the amount of measured moisture, volatile matter, fixed carbon and ash are not higher than 0.2%, 0.6%, 1.0% and 1.0% respectively.

本文研究了用于煤的近分析的微型热电联产的可行性。目的是开发一种可靠且通用的程序，该程序允许在一个实验运行期间确定每种煤成分的含量。在几个调查的因素（即温度，加热速率，停留时间等）中，特别着重于清洗TG炉的过程，据称这是错误确定水分含量的可能来源。对9个样品进行的分析表明，所提出的方法提供的结果接近于标准化方法所提供的结果，而水分，挥发物，固定碳和灰分的测量值差异不超过0.2％，0.6％，1.0％和1.0 ％ 分别。