高硫煤采前脱硫技术研究

Desulfurization technologies of high-sulfur coal before mining

为提高煤炭脱硫率,在阐述现有煤炭脱硫技术的基础上,提出煤炭采前脱硫技术构想及采前脱硫技术方案,分析了采前脱硫技术存在的问题,并提出发展建议。在考虑煤层赋存条件、煤层结构、煤质特征、含硫矿物构成,以及采掘工程、治灾工程、瓦斯抽采等与煤炭开采有关的空间工程布局情况的基础上,运用化学脱硫、生物脱硫方法,可采用巷道+钻孔漫灌法、巷道+钻孔注入法、加压注入+综合抽排法等工艺实现采前脱硫。采前脱硫存在脱硫方法适应性有待提高,影响采掘布置及煤炭开采,加剧煤炭自燃,脱硫后副产物对环境有潜在影响等问题。未来应开发高效化学脱硫液和生物菌群,加强采前脱硫技术理论研究及应用,实现采前脱硫与采后脱硫相结合,提高脱硫效果。

In order to improve coal desulfurization rate,one assumption about desulfurization before mining was provided based on the exist-ing desulfurization technologies. The corresponding technologies and possible problems were also analyzed. After considering seam occur-rence condition and seam structure,coal characteristics,sulfur minerals and mining engineering,disaster resistant engineering,gas drain-age,space project layout relevant to coal mining,chemical and biological desulfurization methods were adopted. The roadway and drill holeirrigation method,roadway and borehole injection method,pressurized injection and comprehensive discharge methods and desulfurizationprocess were used. The adaptability and environmental protection property of the existing desulfurization method was poor. The mining lay-out and efficiency were also effected. The desulfurization method led to coal spontaneous combustion more easily. The development of effi-cient desulfurizer and biological bacteria group,desulfurization theories should be strengthened.