摘要
通过将选择性废气再循环(S-EGR)与联合循环的集成实现CO_(2)的捕集和循环,以获得更高的系统运行效率。基于实际联合循环电厂的运行数据,探究了选择性废气再循环S-EGR集成对实际联合循环和碳捕集系统的影响。结果表明:S-EGR集成后分别提升碳捕集和联合循环Exergy效率6.9%和1.3%;燃烧室是联合循环中Exergy损失最大的部件,占比44.8%,其次是蒸汽轮机、凝汽器和余热锅炉,造成Exergy损失的主要原因是温差;碳捕集单元与联合循环集成后,热效率和Exergy效率都在S-EGR循环比为10%时达到峰值后逐渐降低。
A novel integrated combined cycle with post-combustion carbon capture system is proposed to capture and recycle CO_(2) through the integration of selective exhaust gas recirculation(S-EGR)for higher system operating efficiency.Based on the operating data of an actual combined cycle power plant,the study explores the impact of S-EGR integration on combined cycle and carbon capture system.Results show that:After S-EGR integration,the exergetic efficiencies of carbon capture and combined cycle are improved by 6.9%and 1.3%,respectively;The combustion chamber is the part with the largest Exergy destruction in the combined cycle,accounting for 44.8%,followed by the steam turbine,condenser and heat recovery steam generator(HRSG),the main reason for the Exergy destruction is the temperature difference;After post-combustion carbon capture system is integrated with the combined cycle,the thermal and exergetic efficiency both reach the peak when the S-EGR recycle rate(SRR)is 10%,and then gradually decrease.
作者
张振东
唐佑宁
伍卓汉
CHONG Chengtung;TANG Youning;NG Johan(Shanghai Jiao Tong University,Shanghai 201306,China;Faculty of Engineering and Physical Sciences,University of Southampton Malaysia,Iskandar Puteri 79100,Johor,Malaysia)
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2023年第3期1-8,共8页
Journal of South China Normal University(Natural Science Edition)
基金
科技部国际科技交流项目(21Z010802213)。
关键词
联合循环
燃烧后碳捕集
选择性废气再循环
Exergy分析
Combined Cycle Gas Turbine(CCGT)
Post-combustion Carbon Capture(PCC)
Selective Exhaust Gas Recirculation(S-EGR)
Exergy analysis
