干熄焦高温矩形膨胀节在线修复与维护  

On-line Repairing and Maintaining High-temperature Rectangular Expansion Joints for CDQ

作　　者：朱庆庙 庞克亮 侯士彬[2] 王超 武吉 Zhu Qingmiao;Pang Keliang;Hou Shibin;Wang Chao;Wu Ji(Ansteel Iron & Steel Research Institutes,Anshan 114009,Liaoning,China;General Coking Plant of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China)

机构地区：[1]鞍钢集团钢铁研究院,辽宁鞍山114009 [2]鞍钢股份有限公司炼焦总厂,辽宁鞍山114021

出　　处：《鞍钢技术》2019年第4期49-52,共4页Angang Technology

摘　　要：针对鞍钢股份有限公司炼焦总厂4#干熄焦系统高温矩形膨胀节内部浇筑料脱落问题,分析了膨胀节损坏原因,提出了在线修复与维护技术。通过采取减少锅炉入口温度波动、膨胀节内部挂件改型、改进膨胀节浇筑方式、增加膨胀节膨胀缝的密封、强化升温前养护与升温过程控制等措施,有效延长了干熄焦年修周期,实现了年修周期为2年的目标,年修时长缩短了20%,年修费用降低了约41.4%,干熄焦生产效率由98%提高至98.3%。In allusion to the dropping-off of the castables inside the high-temperature rectangular expansion joints in No.4 CDQ system of General Coking Plant of Angang Steel Co.,Ltd.,the causes leading to the damage of the joints were analyzed and then the on-line repairing and maintaining technology was proposed.By taking these measures such as reducing the fluctuation of temperature at the inlet to the boiler,remodeling the pendants inside expansion joints,improving the method for pouring expansion joints,increasing the seals for expansion joints,strengthening the maintenance of expansion joints prior to increase the temperature and controlling the temperature-rising process,the annual overhaul cycle for the CDQ equipment was extended effectively and the aim of extending the annual overhaul cycle as long as 2 years was achieved,which meant the time for annual maintenance was shortened by 20%,the expense was reduced by 41.4% and the production efficiency was increased to 98.3% from 98%.

关 键 词：干熄焦 膨胀节 在线修复 生产效率 

分 类 号：TQ522[化学工程—煤化学工程]