ISSN 1009-6248CN 61-1149/P 双月刊

主管单位:中国地质调查局

主办单位:中国地质调查局西安地质调查中心
中国地质学会

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    东胜煤田新街台格庙矿区侏罗纪煤岩煤质特征及其高效利用评价

    Characteristics of Jurassic Coal Rock and Coal Quality in Xinjie Taigemiao Mining Area of Dongsheng Coalfield and Evaluation of Its High-Efficiency Utilization

    • 摘要: 东胜煤田新街台格庙矿区位于内蒙古鄂尔多斯市伊金霍洛旗和乌审旗境内,蕴含着丰富的煤炭资源,属于中国西北地区大型煤炭基地的重要组成部分。然而,目前尚未对该矿区的煤质进行综合评价,严重制约其未来煤炭资源的清洁高效利用。鉴于此,笔者系统整理了东胜煤田新街台格庙矿区多年来积累的煤田地质勘查资料,综合分析了该矿区延安组煤的煤质、煤岩特征,并结合煤炭洁净等级划分和各类煤炭清洁利用方向的评价指标体系,全面评价了新街台格庙矿区延安组煤的洁净潜势和清洁利用方向。结果显示:新街台格庙矿区延安组煤具有特低–低灰、特低–低硫、低有害元素、高发热量的特征;该矿区煤为优质的高清洁度动力用煤,综合评价为II级动力用煤;高焦油产率(普遍>7%)、中–高挥发分、高固定碳、特低–低灰分、低水分的特征表明,该矿区煤适用于中–低温热解提取煤焦油,综合评价I级煤制焦油用煤;无黏结性、低水分、较高氢碳原子比、高惰质组含量,表明其也较适合于直接液化用煤。结合矿区发展规划目标,综合分析认为新街台格庙矿区延安组煤清洁潜势较高,优势的利用方向为清洁动力用煤和煤制焦油用煤。

       

      Abstract: The Xinjie Taigemiao mining area of Dongsheng Coalfield contains rich coal resources, which is located in the Ejin Horo Banner and Wushen Banner, Ordos City, Inner Mongolia Autonomous Region. However, the coal quality has not been comprehensively evaluated at present, which seriously restricts the clean and efficient utilization of coal resources in the future. Based on the abundant geological exploration data, we comprehensively analyzes the coal quality and coal rock characteristics of the Yan'an Formation coal in the Xinjie Taigemiao mining area. Combined with the classification of coal cleanliness levels and the evaluation index system of various coal clean utilization directions, the clean potential and clean utilization direction of the Yan'an Formation coal in the Taigemiao mining area are comprehensively evaluated. The results show that the Yan'an Formation coal in the Taigemiao mining area has the characteristics of ultra-low ash, ultra-low low sulfur, low harmful elements, and high calorific value. These characteristics indicate that the Yan'an Formation coal is high-quality, high cleanliness power coal, and is comprehensively evaluated as Class II power coal. The characteristics of high tar yield (generally>7%), medium high volatile matter, high fixed carbon, ultra-low ash content, and low moisture content indicate that it is suitable for low-temperature pyrolysis extraction of coal tar (Class I). In addition, its cohesiveness, low moisture content, high hydrogen to carbon atomic ratio, and high inertinite contents, indicate that it is also suitable for liquefaction coal. Based on the development planning goals of the mining area, we proposed that the Yan'an Formation coal in the Taigemiao mining area has a high potential for clean energy, and the advantageous utilization directions are clean power coal and coal for tar production.

       

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