148-paper-马钢烧结带冷机余热发电系统.docVIP

马钢烧结带冷机余热发电系统 丁毅，陈广言，史德明，刘长青，周劲军 （马鞍山钢铁股份有限公司，马鞍山 243000） 摘要：马钢烧结带冷机余热发电系统是中国第一套利用烧结冷却机余热发电的系统。该项目已于2005年9月完工，目前正处在试运行阶段。该项目成功投入运行，标志着马钢乃至中国钢铁行业在烧结余热利用方法迈上一个新的台阶，对推动行业节能工作有着重要的意义。 马钢现有两台300m2烧结机组，年产烧结矿约700万吨。调研表明，烧结机鼓风带式冷却机产生约80万Nm3/h、395℃烟气（两台合计）。余热发电系统主要由四个部分组成：1.烟气回收输送系统；2.烟气锅炉系统，包括两台容量为37.4t/h废气锅炉（每台300m2烧结机配备一台废气锅炉）；3.凝汽式汽轮发电机系统，包括一台容量为17.5MW凝汽式汽轮发电机组；4.DCS集散控制系统及辅助设施等。 通过采用调整烧结工艺、改善密封性、调整料层厚度、热风循环等手段，目前，发电量及系统运行稳定性有了很大提高，日发电量已突破30kWh。 关键词： 烧结带冷机；余热；发电系统 Generating System by Using Waste Heat of Sintering Cooler of MaSteel DING Yi，CHEN Guangyan，eming，g，ZHOU Jinjun (Ma Steel Co.Ltd. , Maanshan 243000，China) Abstract: MaSteel`s generating system by using waste heat of sintering cooler is the Chinese first set of generation system by using waste heat of sinter. It has already been completed in September of 2005, at present is occupying the trial moving stage. Its success in putting into operation, symbolized MaSteel and even the Chinese steel and iron profession has already stepped a new stair in using method of waste heat of sinter, and has important meaning in promoting the profession energy conservation work. MaSteel has two sets of 300m2 sintering machine, the annual output of sinter approximately is 7 million tons. Investigation and study indicated that, the sintering cooler produces approximately 800,000 Nm3/h,395 ℃ haze(two sets together) . Generating System is mainly made up of four parts: 1. Haze recycling expulsion system; 2.Waste heat boiler system, two sets, capacity is 37.4t/ h (each sintering machine provides a waste gas boiler); 3. Turbo generator system, one set, generator capacity is 17.5 MW; 4. Distributional Control System (DCS) and auxiliary equipment, etc. Through used the methods of adjusting craft of fritting, improving leak-proof quality, adjust thickness of sinter layers, hot blast circulation, the power output and operation stability of generating system has improved a lot, the daily power output has broken through 300,000kWh. Key wo