Energy analysis of waste heat recovery and utilization system for ring cooler
LIU Chuan-peng1，LI Guo-jun1，LIN Wen-quan2，LI Ming-hao1，XU Du-jiang1，YU Hong-ling1
1. School of Energy and Power Engineering， University of Shanghai for Science and Technology， Shanghai 200093，China 2. Engineering Department， Baosteel Engineering and Technology Group Co.， Ltd.， Shanghai 201900， China
Abstract：Based on the process of waste heat recovery from sintering and utilization system for ring cooler， the energy flow diagram and the energy flow diagram were draw， the relevant energy evaluation was established. The thermal balance method and exergy analysis were applied to study waste heat utilization in a ring cooler， such as heat loss， energy loss， thermal efficiency and energy efficiency during the process of the conversion and utilization for waste heat resources. The results show that， the thermal efficiency of ring cooler and waste heat boiler were 26.78% and 45.60%， respectively， the corresponding energy efficiencies were 22.88% and 45.08%， respectively， hence， ring cooler was the weak link during the recovery and utilization of waste heat system. The main factors affecting the recovery and utilization of waste heat were the air leakage of ring cooler， Un-utilization of sensible heat of the third cooling gas and the process of gas-solid heat transfer in sintering bed.
刘传鹏，李国俊，林文佺，李明浩，许渡姜，郁鸿凌. 环冷机余热回收与利用系统的能量分析[J]. 钢铁, 2015, 50(12): 60-66.
LIU Chuan-peng，LI Guo-jun，LIN Wen-quan，LI Ming-hao，XU Du-jiang，YU Hong-ling. Energy analysis of waste heat recovery and utilization system for ring cooler. Iron and Steel, 2015, 50(12): 60-66.
2015, Vol. 50 
