“煤中取水”高效褐煤发电技术研究与应用

摘要

Water resources have become one of the main bottlenecks for the development of coal-fired power plant (CFPP).The construction and development of coal and electricity bases have led to a series of environmental problems,such as intensified contradiction between supply and demand of regional water resources,deterioration of water environment quality and overdraft of groundwater.Thus,To plan and use the limited water resources scientifically by developing water saving technology is a key measure to ease the water resources restriction and realize the sustainable development of coal and electricity bases.A high efficient lignite coal power generation technology is proposed in this paper and has been applied to the national coal and electricity base of Inner Mongolia Xilingol league.It is shown that the technology can effectively alleviate the water resources restraints of CFPP in Xilingol,and can also reduce coal consumption for power generation and the emissions of pollutants.%水资源已然成为煤电基地发展的主要瓶颈之一.煤电基地建设与开发活动均不同程度导致了区域水资源供需矛盾加剧、水环境质量下降、地下水超采等环境问题.科学规划与利用有限的水资源,推广使用高效节水技术,是煤电基地缓解水资源限制、实现持续发展的关键措施,也是保护区域生态系统的重要要求.提出了“煤中取水”高效褐煤发电技术,并在内蒙古锡林郭勒盟(简称锡盟)国家煤电基地开展实际应用.应用结果表明:该技术可以有效缓解水资源对锡盟煤电基地建设的制约,同时降低了电厂的发电煤耗、减少了污染物的排放.