摘要
阐述了烧结工序中烧结机烟气和冷却机废气两种余热分布规律及协同回收利用原则,对立式逆流冷却机、热废气-烟气双热源余热锅炉装置、三进口余热锅炉装置及双余热源集成发电系统进行了研究,并以宝钢2号烧结余热回收系统余热源参数为基础,在烧结机烟气和冷却机废气携带热量不变的工况下,对研发的集成发电系统选定两种方案与原余热回收方案进行热经济性计算与对比分析.结果表明:双源集成发电系统两种方案的余热锅炉效率分别达到了73.4%和69.0%,发电净功率分别达到了16.40 MW和15.40 MW,研究结果可为中低品位余热高效回收装置的研发提供科学依据和技术支撑.
By analyzing the distribution law of waste heat from both sintering and cooling machine,and the principle of collaborative heat recovery of the dual waste heat,an experimental study has been carried out on the vertical countercurrent cooler,the exhaust-gas dual-source HRSG,the three-inlet HRSG and the integrated dual waste heat power generation system.Besides,on the basis of the parameters of the No.2 sintering waste heat recovery system of Baosteel,thermal economic analysis and comparison were conducted between the two schemes of newly developed integrated power generation system and the original waste heat recovery scheme,under the condition that the heat carried by flue gas of the sintering machine and exhaust gas of the cooler keeps unchanged.Results show that the efficiency in the two schemes of the newly developed system can respectively reach 73.4% and 69%,while the generating net power respectively reaches 16.3 MW and 15.4 MW.The achievements may serve as a reference for research and development of the technology and equipment for high efficient recovery of mid/low-grade waste heat.
出处
《动力工程学报》
CAS
CSCD
北大核心
2011年第12期933-937,共5页
Journal of Chinese Society of Power Engineering
基金
国家"十一五"科技支撑计划课题资助项目(2008BAE67B01)
河北省自然科学基金资助项目(E2011209011)
关键词
烧结
双余热源
中低品位余热
发电系统集成
热经济性
sintering
dual waste heat source
mid/low-grade waste heat
integration of power generation system
thermal economy
