基于常量元素分析的煤炭分类研究

Study on classification of coals based on the major elements analysis

结合我国目前煤炭分类的现状,以煤的常量元素分析为基础,采用化学结构指数对我国煤炭分类进行相关研究。研究表明:基于煤的常量元素提出的各化学结构指数对不同用途的煤种划分有不同程度的效果,其中化学结构不饱和度指数(δ)和有机结构碳骨架的还原度(B)可以将3类无烟煤较好地分开,芳碳率(Fa)和修正过的结构指数(η′)也能将常用的动力用煤大致分开,芳碳率(Fa)和氢氧原子摩尔数比(nH/nO)能较好地划分常用的炼焦用煤。

According to the analysis of coal＇s major elements,and the current situation of the classification of coal in China,research about the classification of Chinese coal was carried out based on the chemistry structure parameters.The results showed that various chemistry structure parameters played different roles in the classification of a few coals in different uses.Three kinds of sub-categories of anthracite were well divided by the degree of unsaturation of chemical structure（δ） and the extent of reduction of the carbon skeleton of the organic entity（B）;aromatization-carbon ratio（Fa） and modified structure parameter（η′） could be used to classify conventional steam coals;aromatization-carbon ratio（Fa） and the molar ratio of hydrogen and oxygen（nH/nO） could classify varieties of conventional coking coals to some extent.