烧结余热回收发电关键技术

来源期刊：钢铁2011年第1期

论文作者：胡长庆 师学峰 张玉柱 王子兵

文章页码：86 - 91

关键词：烧结； 余热回收； 关键技术； 工艺优化

Key words：sinter； residual heat recovery； key technology； process optimization

摘    要：烧结余热发电技术是钢铁工业提高能源利用效率,实现可持续发展的重要途径之一。针对烧结余热资源品质较低、波动大等特点,提出并分析了余热回收与烟气处理、热源参数预测、余热回收工艺与废气温度调节、废气循环与烧结矿冷却制度优化、余热锅炉与发电系统选型优化等关键技术,认为:烧结余热回收应以冷却机废气余热回收为主,并重点保证系统稳定运行、提高余热回收效率,其中,热源参数预测技术是基础,热风循环技术是有效手段,余热锅炉和发电系统热力参数优化、参数匹配和动态特性优化是核心。

Abstract: Power generation with sintering residual heat is one important way to improve energy efficient and to achieve sustainable development for steel industry.According to the characteristics of sintering residual heat,such as low quality and volatile,the key technologies,including residual heat recovery vs.exhausted gas treatment,original parameters prediction of residual heat,residual heat recovery process vs.temperature regulation of hot air,exhaust gas circulating vs.cooling system optimization,and equipment selection optimization for boiler and generator,were proposed and analyzed.It is cautious to conclude that the emphases should focus on the recovery of residual heat of exhausted gas from cooling machine and the technologies to ensure the operating stability and to improve the recovery efficiency,of which the foundation is the technology of original parameters prediction of residual heat,the effective mean is the process of circulating hot air,and the core is the optimization and match of parameters and dynamic characteristics of residual heat boiler and power generation system.