宁夏特种煤资源煤质特征综合评价研究

    Study on comprehensive evaluation of coal quality characteristics of special coal resources in Ningxia

    • 摘要: 根据不同煤质的综合利用是未来煤炭开发需重点考虑的问题,也是去产能现状下煤炭的唯一出路,宁夏特种煤煤质特征评价研究不够。本文通过对宁夏9个煤矿14块样品的煤质分析实验,评价了宁夏特种煤资源煤质和分布特征。宁夏适合气化用煤主要分布在宁东地区,煤与CO2反应性好的煤矿包括清水营、枣泉、王洼1井、金凤和羊场湾。金凤煤矿12号煤对比直接液化煤质要求匹配度0.81,匹配度最高,宁夏适合直接液化的特种煤资源主要分布在马家滩矿区。石炭井矿区大丰2号煤中含有伴生有益高元素,其中钪Sc、镓Ga、钍Th元素含量高于中美煤中元素含量平均值。宁夏部分煤中有害元素富集,其中王洼1井5号煤属高磷煤,金凤煤、任家庄3号煤中铅和氟含量富集。相较于全国其他地区,白芨沟和大丰矿煤具有低含水、低灰低硫、高发热量及落下强度高的煤质特征,是一种国际公认的稀缺而珍贵的煤炭资源,俗称“黑金”,属稀缺煤类。

       

      Abstract: Comprehensive utilization with different coal quality is considered to be the key issue of the future coal development,and it is coal’s only way out under the status of reducing coal production.Study of the evaluation of special coal quality in Ningxia is not enough.In this paper,the quality and distribution characteristics of special coal resources in Ningxia were evaluated by coal quality analysis of 14 samples of 9 coal mines in Ningxia.Good reactivity of coal and CO2 includes Qingshuiying/Zaoquan/Wangwa 1#/Jingfeng and Yangchangwan.Coal resources suitable for gasification in Ningxia are mainly distributed in Ningdong area.According to coal quality request of direct liquefaction,the matching degree of Jinfeng coal mine is the highest,0.81.Special coal resources suitable for direct liquefaction in Ningxia are mainly distributed in Majiagou mining area.Dafeng 2# coal in Shitanjing mining area contains associated beneficial elements.The content of Sc,Ga and Th in Dafeng is higher than the average content in China and United States.Part of the coal in Ningxia has harmful elements.Wangwa1 5# is high-phosphorus,lead and fluoride content enrichment in Jinfeng and Renjiazhuang 3#.Compared with other parts of China Baijigou and Dafeng coal has low water content,low ash and low sulfur,high calorific value and high strength of falling strength.It is an internationally recognized scarce and precious coal resource.

       

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