摘要
分析了邯钢炼铁厂435 m^2烧结机余热发电存在的问题,指出环冷机漏风率高、余热回收率低是制约余热发电系统运行效果的关键因素。通过环冷机水密封改造、上罩全密闭改造、受料点直接取热、取热点前移、余热风量优化、密封材质改进等方法,余热发电率提高25%,环冷机漏风率由35%降至5%,年新增发电量1 440万kW·h,新增创效800余万元。结果表明,强化环冷机密封,优化风量配置是提高余热发电率的重要手段。
The problems existing in the waste heat power generation of the 435 m^2 sintering machine of Handan Iron and Steel Co., Ltd. are analyzed. It is pointed out that the air leakage rate of the ring cooler is high and the residual heat recovery rate is low, which is the key factor that restricts the operation effect of the waste heat power generation system. Through the water seal modification of the ring cooler, the full seal transformation of upper flue gas hood, the direct heat collection of the material receiving point, the moving forward of the hot spot, the optimization of the waste heat air volume, and the improvement of the sealing material, the waste heat generation rate is increased by 25%, the air leakage rate of the ring cooler is reduced from 35% to 5%. When the annual new power generation is 14.4 million kW·h, the additional efficiency is more than 800 million yuan. The results show that it is an important means to improve the residual heat generation rate by strengthening the seal of the ring cooler and optimizing the air volume configuration.
作者
赵军凯
侯健
姜林
ZHAO Jun-kai;HOU Jian;JIANG Lin(Hansteel Company,HBIS Group,Handan 056015,Hebei,China)
出处
《中国冶金》
CAS
北大核心
2020年第4期69-73,共5页
China Metallurgy
关键词
烧结机
余热回收
水密封
发电
节能
sintering machine
waste heat recovery
water sealing
power generation
energy saving
