某炼钢厂120t转炉余热锅炉节能改造  

Energy-saving Renovation of 120 t converter Waste Heat Boiler in A Steel Plant

作　　者：刘伟[1] LIU Wei(Baosteel Engineering Technology Group Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]宝钢工程技术集团有限公司,上海201900

出　　处：《冶金动力》2023年第4期61-64,共4页Metallurgical Power

摘　　要：介绍了某炼钢厂2套120t转炉余热锅炉节能改造技术及工程实践。通过优化汽化冷却烟道汽水循环系统,改造汽化冷却末段烟道为膜式壁全汽化结构,对烟道内部喷涂铬镍合金,采用新型纳米保温材料,锅炉给水及强制循环系统采用变频控制,运用智慧制造技术、全流程节能技术等技术,延长转炉余热锅炉的使用寿命,提高转炉余热锅炉的产汽能力。通过对蒸汽管网系统的优化,采用蒸汽蓄热器技术,保证了转炉炼钢产汽并网的稳定性和连续性,实现煤气回收约132m^(3)/t钢的情况下蒸汽回收大于100kg/t钢。The article describes the energy-saving renovation technology and engineer-ing practice of 2 sets of 120 t converter waste heat boilers in a steel plant.By optimizing the vapor-water circulation system of the vapor cooling flue,transforming the vapor cooling end flue into a membrane wall full-vaporization structure,spraying chrome-nickel alloy on the inside of the flue,adopting a new type of nano thermal insulation material,setting fre-quency control for the boiler feed water and forced circulation system,and applying a series of modifications such as intelligent manufacturing technology and whole-process energy-saving technology,it can prolong the service life and improve the steam production capacity of the converter waste heat boiler.Through the optimization of the steam pipe network sys-tem and the adoption of steam accumulator technology,the stability and continuity of the steam production of the converter steelmaking are ensured,and the steam recovery of more than 100 kg/t of steel is achieved with the gas recovery of about 132 m3/t of steel.

关 键 词：转炉余热锅炉 汽化冷却 蓄热器 节能改造 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]