烟气余热回收技术在连续退火机组中的应用  

Application of Flue Gas Waste Heat Recovery Technology in Continuous Annealing Line

作　　者：蒲洪权 武绍井 吴斌 代双叶 PU Hongquan;WU Shaojing;WU Bin;DAI Shuangye(Chongqing CISDI Thermal&Enuironmental Engineering Co.Lid,Chongqing 401122,China;CISDI Chongqing Information Technology Co.Ltd.,Chongqing 401122,China)

机构地区：[1]重庆赛迪热工环保工程技术有限公司,重庆401122 [2]中冶赛迪重庆信息技术有限公司,重庆401122

出　　处：《工业炉》2022年第4期64-68,共5页Industrial Furnace

摘　　要：以某公司冷轧厂新上的一套年产量为60万t的连续退火机组为例,计算了连续退火炉尾部烟气的余热利用潜力。结果表明:该连续退火炉尾部烟气的余热利用潜力非常可观,值得通过新增余热回收装置对其进行回收利用。经过对2种余热回收方式即蒸汽余热回收方式和过热水余热回收方式进行比较后,决定采用过热水回收方式来回收连续退火炉尾部烟气的余热;同时介绍了过热水回收技术的实施要点及其带来的经济效益和环保效益。Taking a new set of continuous annealing unit with an annual output of 600,000 t in a company’s cold rolling plant as an example, the utilization potential of waste heat from the tail gas of the continuous annealing furnace was calculated. The results show that the waste heat utilization potential of the tail flue gas of the continuous annealing furnace is very considerable, and it is worthwhile to recycle it by adding a waste heat recovery device. After comparing the two waste heat recovery methods, namely steam waste heat recovery and superheated water waste heat recovery, it was decided to use superheated water recovery to recover the waste heat of the flue gas at the tail of the continuous annealing furnace. The key points of the implementation of the superheated water recovery technology, and the economic and environmental benefits it brings are introduced.

关 键 词：连续退火机组 烟气余热回收 过热水 效益 节能 

分 类 号：TG155.1[金属学及工艺—热处理]