钢铁企业中低温烟气余热用于制冷的研究  

Application of heat from medium/low temperature flue gas to refrigeration in iron and steel enterprises

作　　者：董辉[1] 王萌[1] 杨猛[1] 杜涛[1] 蔡九菊[1] 

机构地区：[1]东北大学

出　　处：《暖通空调》2010年第12期67-70,共4页Heating Ventilating & Air Conditioning

基　　金：辽宁省自然科学基金资助项目(编号:20102069)

摘　　要：总结和分析了我国钢铁企业中、低温烟气余热回收利用情况。采用火用分析方法确定了不同温度烟气余热的合理利用方式,对利用烟气直接驱动的制冷机组提出了改进方法,以提高其热力系数和能源利用火用效率。介绍了热风炉烟气余热梯级利用方案,将烟气先用于制冷,再用于预热助燃空气和煤气。Summarizes and analyses the waste heat recovery and utilization of medium/low temperature flue gas in China.Puts forward the reasonable ways for utilizing the waste heat of different temperature flue gas by exergy analysis method.Gives a method to improve both the refrigeration coefficient and the exergy efficiency of refrigerating units driven by the flue gas.Presents a step utilization scheme of the waste heat of flue gas from hot-blast stove,in which the flue gas is firstly used to refrigerate,then to preheat combustion air and gas.

关 键 词：中低温烟气 余热 制冷 梯级利用 热风炉 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]