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煤質分析概述

发布时间：2013-09-02 点击次数：1292次

煤是一种性质十分复杂的固体可燃矿物。由于形成煤的原始物质和沉积环境的不同，煤的性质和成分也各不相同。煤的用途广泛，各种煤炭利用方式工艺和用煤设备对美的性质又有专门的技术要求。因此，煤的分析试验方法与金属分析、化工产品分析、石油组成分析和其他矿物原料分析相比，既有共同性，又有特殊性。

煤质分析试验方法应具有共同的要求是：

正確的反映出試驗對象的性質；
將不同性質的樣品明顯的區分；
發放准確度何精密度高，重複性和再現性號；
試驗方法和設備簡單易行，利于標准化

煤炭化驗方法也必須達到以上基本要求。但是由于美的性質複雜一邊，煤質分析試驗方法又有許多特定的要求和特點。主要有

試驗方法規範性強；
樣品不均一性大；
樣品組成和性質變化範圍大
測試項目和試驗方法多且不易統一

現代化分析儀器和技術在煤質分析和煤炭加工産品測試中已得到廣泛的應用。一是爲了了解深入研究煤的組成結構，以便全面了解煤的本性和煤質變化規律；而是爲了測定煤炭加工産品的成分和性質；三是爲了適應煤炭生産和加工利用的需要而建立起來的快速分析和在線分析，以便達到迅速而准確的控制煤和加工産品的品質。在煤炭實驗室和煤質研究中應用的現代分析技術主要有：

氣象色譜
液相色譜
質譜
紅外光譜
核磁共振
仿色分析
電量分析
X射線熒光分析

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