• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >ISSUES AND OPTIONS FOR REDUCING METHANE EMISSION TO THE ATMOSPHERE FROM INDIAN COAL MINING
【24h】

ISSUES AND OPTIONS FOR REDUCING METHANE EMISSION TO THE ATMOSPHERE FROM INDIAN COAL MINING

机译：减少印度煤炭开采中甲烷向大气排放的问题和选择

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

India has a reserve of about 190 billion tonnes of coal spread over nearly 50 coalfields that range in size from a few Km~2 to 1500 Km~2 . There are about 440 working mines which produced 238 million tonnes of coal in the year 1992-93 and methane emission to the atmosphere during the year is estimated to be 0.4 million tonnes. Based on geologic and reservoir characterisation of different coal basins, mine conditions and mining methods and in-situ methane content of coal seams, potential for reduction of methane emission from Indian coal mining is assessed. The exhaust ventilation air of most of the mines has been observed to contain less than 0.02% of methane, utilisation of which may not be economically viable with the currently available technologies. Recovery of methane from gob wells has also limited applications in Indian mines working mostly by bord and pillar method of mining at shallow depths. However, coalbeds in some virgin zones located mainly in the eastern part of the country appear to have appropriate geologic conditions, aggregate seam thickness and gas in place and are likely to be promising sites for pre-mining degasification which will have significant contribution to the reduction of methane emission, increasing mine safety and towards an useful fuel resource for energy.
机译：印度在近50个煤田中散布着大约1900亿吨的煤炭储备，煤田的大小从几公里2至1500公里2。在1992-93年间，大约有440处工作中的煤矿生产了2.38亿吨煤炭，而该年度向大气中排放的甲烷估计为40万吨。根据不同煤盆地的地质和储层特征，矿山条件和开采方法以及煤层的原位甲烷含量，评估了减少印度煤矿开采甲烷排放量的潜力。据观察，大多数矿山的排气通风气体中甲烷含量不到0.02％，利用目前可用的技术在经济上可能不可行。从采空井中回收甲烷也限制了在印度矿山中的应用，这些矿山大多采用浅层开采的博尔德和支柱方法开采。但是，主要位于该国东部的一些原始地区的煤层似乎具有适当的地质条件，聚集的煤层厚度和天然气，并且可能是有希望的采矿前脱气场所，这将为减少煤层气做出重大贡献。甲烷排放量的增加，提高了矿山的安全性，并成为一种有用的能源燃料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号