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对ASTM标准和热重的测量结果进行比较。以麦秸、玉米秸秆、花生壳和松木4种生物质为原料,用ASTM标准方法测定4种生物质灰分含量。同时用热重分析法对麦秸和玉米秸秆灰分含量进行实验研究,考察在不同温度(550、600、650℃)、不同升温速率(10、15、20、40℃/min)时这两种生物质的灰分含量,并与ASTM标准值比较,得出与标准值有较好一致性的热重分析实验条件,并用另外两种生物质进行实验验证。结果表明,当温度为600℃,升温速率为40℃/min时,测得的4种生物质灰分值与ASTM标准值具有较好的一致性。
The ASTM and thermogravimetric measurements were compared. Four kinds of biomass of wheat straw, corn stalks, peanut shells and pine wood were used as raw materials to measure the ash content of four kinds of biomass by ASTM standard method. At the same time, the contents of ash in wheat straw and corn stalk were studied by thermogravimetric analysis. The effects of different temperature (550,600,650 ℃), different heating rate (10,15,20,40 ℃ / min) The ash content of the material was compared with the standard value of ASTM to obtain the thermogravimetry experimental conditions which were in good agreement with the standard values. The experiment was verified by using two other biomass. The results show that when the temperature is 600 ℃, the heating rate is 40 ℃ / min, the measured four kinds of biomass ash content and ASTM standard values have good consistency.