混凝土管在煤炭地下气化工程中的应用初探  

Discussion on Concrete Pipe Applied to Underground Coal Gasification Project

作　　者：黄温钢[1,2,3] 王作棠[1,2,3] 余力[4] 辛林[1,2,3] 王建华[1,2,3] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116 [2]中国矿业大学深部煤炭资源开采教育部重点实验室,江苏徐州221116 [3]中国矿业大学矿业工程学院,江苏徐州221116 [4]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《煤炭工程》2014年第2期95-97,共3页Coal Engineering

基　　金：中国矿业大学煤炭资源与安全开采国家重点实验室自主研究课题资助项目(SKLCRSM10X04);教育部科学技术研究重点项目(02019);江苏高校优势学科建设工程资助项目(SZBF2011-6-B35)

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输气要求,不但耐腐蚀,而且价格仅为钢管的1/3,优势明显。The crude gas from underground coal gasification （UCG） containing sulfide is corrosive to the steel borehole casing and gas transmitting pipeline in front of purification system, which in the long run will influence the safe and stable operation of UCG station. Aiming at this problem, an idea applying cement pipe to replace steel tube was proposed, and the application of concrete pipe in the UCG project was discussed. Stress state of the venting borehole casing was analyzed, structure of the cement pipe was designed, and the cost of steel and cement pipe were compared. The results show that the pipeline made by the heat - resistant cement could meet the requirements of the UCG project, showing obvious advantages compared with the steel pipe, with corrosion resistance and only 1/3 cost.

关 键 词：煤炭地下气化 钻孔套管 输气管道 钢管 混凝土管 

分 类 号：TD844[矿业工程—煤矿开采]