中国电机工程学报2025，Vol.45Issue(z1)：264-273,10.DOI:10.13334/j.0258-8013.pcsee.250583
烧结环冷机余热超临界二氧化碳循环发电系统设计优化研究
Design Optimization Research on the Waste Heat Supercritical CO2 Cycle Power Generation System of Sintering Circular Cooler
摘要
Abstract
Supercritical carbon dioxide(S-CO2)cycle power generation technology holds significant potential in waste heat utilization.This study was based on the waste heat scenario of a sintering circular cooler,and conducted parameter multi-objective optimization and analysis of the thermal performance and economy of four S-CO2 cycle configurations.The optimization objectives are to achieve the highest output power and the lowest static investment.The results indicate that dual-pressure dual-temperature top-bottom cycles(Configurations 2 and 3)and the split-flow recompression cycle(Configuration 4)substantially enhance output power compared to the simple recuperation cycle(Configuration 1).Configuration 1 achieves the lowest static investment when output power is below 13.1 MW,while Configuration 4 demonstrates superior economic advantages at higher output power.Further thermal and economic analysis shows that the power range of 13.1～15.9 MW for Configuration 4 is the optimal choice,corresponding to an investment payback period of 2.09～2.28 years.Compared to conventional superheated steam power unit of dual-pressure boiler for circular cooler waste heat recovery,the S-CO2 Configuration 4(15.7 MW)demonstrates superior performance:23.16％higher power output,2.19％increase in net efficiency,comparable payback period,and an additional annual carbon emission reduction of 11 000 tons.关键词
余热利用/超临界 CO2 发电/烧结环冷机/多目标优化/热力分析/经济评估Key words
waste heat utilization/supercritical CO2 power generation/sintering circular cooler/multi-objective optimization/thermal analysis/economic evaluation分类
能源与动力引用本文复制引用
王方明,朱萌,江龙,周涛,杜建太,王毅,向军..烧结环冷机余热超临界二氧化碳循环发电系统设计优化研究[J].中国电机工程学报,2025,45(z1):264-273,10.基金项目
国家重点研发计划项目(2023YFB4104400) （2023YFB4104400）
中国五矿集团原创技术策源地项目(90170091). National Key R&D program of China(2023YFB4104400) （90170091）
Original Technology Source Project of Minmetals(90170091). （90170091）
