煤炭工程 ›› 2014, Vol. 46 ›› Issue (2): 95-97.doi: 10.11799/ce201402032

• 研究探讨 • 上一篇    下一篇

混凝土管在煤炭地下气化工程中的应用初探

黄温钢1,王作棠2,余力3,辛林4,王建华2   

  1. 1. 中国矿业大学 煤炭资源与安全开采国家重点实验室;深部煤炭资源开采教育部重点实验室;中国矿业大学 矿业工程学院
    2. 中国矿业大学(徐州)
    3. 中国矿业大学(北京)化学与环境工程学院煤炭地下气化研究中心
    4. 中国矿业大学矿业工程学院;煤炭资源与安全开采国家重点实验室;低碳能源研究院
  • 收稿日期:2013-09-23 修回日期:2013-10-11 出版日期:2014-02-14 发布日期:2014-02-18
  • 通讯作者: 王作棠 E-mail:ucgwangzt@163.com

Study on the application of concrete pipe in the underground coal gasification project

  • Received:2013-09-23 Revised:2013-10-11 Online:2014-02-14 Published:2014-02-18

摘要:

煤炭地下气化粗煤气中含有硫化物,对钢制排气钻孔套管和净化前的输气管路具有腐蚀作用,影响地下气化站的长期安全、稳定运行。针对这一问题,提出了采用混凝土管替代钢管的设想,对混凝土管在地下气化工程的应用进行了初步探讨。分析了排气钻孔套管的应力状态,对混凝土管道的结构进行了设计,对比了钢管和混凝土管的成本。结果表明,采用耐高温混凝土制作的管道能满足地下气化工程要求,不但耐腐蚀,且价格仅为钢管的1/3,优势明显。

关键词: 煤炭地下气化(UCG), 钻孔套管, 输气管道, 钢管, 混凝土管

Abstract:

The crude gas from underground coal gasification (UCG) containing sulfide has the corrosive effects to the steel borehole casing and gas transmitting pipeline before the purification system, which will influence the long-term safe and stable operation of UCG station. To solve this problem, an assumption that replacing the cement pipe with the steel tube is proposed, and the application of concrete pipe in the UCG project is discussed in this paper. We analyzed the stress state of the producing well casing, designed the structure of the cement pipe, and contrasted the cost of steel tube with that of cement pipeline. The results show that the pipeline made by the heat-resistant cement could satisfy the requirements of the UCG project, and has obvious advantages, compared with the steel tube, because of the corrosion resistance and only 1/3 cost of the later.

Key words: underground coal gasification (UCG), borehole casing, gas transmitting pipeline, steel tube, concrete pipe

中图分类号: