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水分對智能微機量熱儀試驗的影響

发布时间：2014-04-17 点击次数：1470次

今天鹤壁华通分析仪器有限公司向您解说一下在试验时煤炭中的水分对智能微机量热仪试验结果的影响。煤的内在水分的准确叫法应该是“空气干燥蒸水分”或“分析基水分”。符号为Mad，以百分数表示，由于煤质分析报告一般不以分析基表示各项指标的结果（空气干燥基水分除外），所以一般认为内在水分对煤炭质量没有影响，因为他只是一个换算指标，这种观点是完全错误的。

煤中水分危害較大，水分是一項重要的煤質指標，他在煤的基礎理論研究和加工利用、貿易和儲存中都有很大影響，一般來說水分高不是一件好事。例如在鍋爐中水分大會影響燃燒的穩定性和熱導性；在煉焦工業中水分也會降低焦炭産率，而且由于水分大量蒸發帶走熱量而延長焦化周期；在煤炭貿易商，煤的水分是一個重要的計質和計量指標。
第二煤中水分有積極作用。在現代煤炭加工利用中，有時水分高反是一件好事，如目前全國都興起的煤制油活動，實質上就是煤的液化，在煤的液化中，煤中水分作爲加氫氣化的供氫體。
測定煤中水分，可以大致推斷沒得變質程度和煤炭種類，煤中水分隨煤的變質程度加深而呈規律性變化；從泥炭-褐煤-煙煤-年輕無煙煤，水分逐漸減少，而從年輕無煙煤-年老無煙煤，水分有逐漸加強。

以上就是試驗時水分對智能微機量熱儀出結果的影響，所以不僅要在平時注意對儀器的保養還要在試驗時加強其准確度，避免任何形式的誤差出現。

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