我国煤炭的单位热值碳含量研究  

Study on carbon content per unit calorific value of coals in China

作　　者：郑剑平 ZHENG Jian-ping(China Coal Processing&Utilization Association,Beijing 100013,China)

机构地区：[1]中国煤炭加工利用协会洗选加工部,北京100013

出　　处：《煤炭加工与综合利用》2022年第1期58-62,共5页Coal Processing & Comprehensive Utilization

摘　　要：针对我国目前不同煤种的单位热值碳含量底数不清,相关国家标准仅给了一个缺省值,单位热值碳含量指标参数过于宽泛的问题,调研了我国12家大型煤炭企业集团的碳含量数据,分析了全国各煤种的单位热值碳含量,对比研究了原煤和商品煤之间单位热值碳含量变化规律。结果表明,我国各煤种原煤的单位热值碳含量范围在24.0×10^(-3)~27.8×10^(-3)kg/GJ,商品煤为23.4×10-3~27.5×10-3 kg/GJ;原煤经过洗选后,除贫瘦煤、瘦煤和无烟煤外,其他煤炭的单位热值碳含量稍有减小;单位热值碳含量随着煤化程度的升高,先减小后增大。In view of the base number of carbon content per unit calorific value(C_(c))of different types of coal in China,the relevant national standard only gave a default value,and the carbon content index parameters are too broad.The C_(c)data of 12 large coal enterprise groups are investigated,the C_(c)indexes of various coals in our country are analyzed,and the variation law of C_(c)between raw coal and commercial coal is compared.The results show that the Cc of raw coal ranges from 24.0×10^(-3)kg/GJ to 27.8×10^(-3)kg/GJ,and that of commercial coal ranges from 23.4×10^(-3)kg/GJ to 27.5×10^(-3)kg/GJ.After washing,the CO_(2)emission of raw coal can be reduced,the C_(c)of low-grade bituminous coal decreases slightly,and the C_(c)of high-grade bituminous coal(lean coal)and anthracite increases.The Cc decreases firstly and then increases with the increase of coalification degree.

关 键 词：碳中和 碳元素质量分数 发热量 单位热值碳含量 

分 类 号：TQ533.1[化学工程—煤化学工程]