电厂用煤发热量测定DSC方法研究

DSC Method Used in Determination of Calorific Value of Coal in Power Plant

发热量是表示煤质特性的主要指标之一,同时也是计算火力发电厂经济性指标的主要依据。本文采用差示扫描量热DSC法对煤的发热量进行测量,将其结果与国标(GB\T213-2008)测量结果进行比较,并就坩埚状态、测量氛围以及升温速率对测量结果的影响进行了讨论与分析,探索出可得到较准确结果的DSC测定条件。

Calorific value of coal is one of the key parameters representing the coal~ characteristics ; it is also the main basis for calculating the important economic indicators of the thermal power plant. In this paper, the differ- ential scanning calorimetric （DSC） method was used for measuring the calorific value of coal and its results were compared to the corresponding values getting from GB ／ T213 - 2008 scheme. Furthermore some impact factors in- cluding the different state of crucible, different reactant gas and different rate of heating on the cussed and analyzed leading to an optimized experimental program of DSC which can get a more result were dis- accurate result.