摘要
有机兰金循环(ORC)在锅炉烟气余热回收中具有一定的优势。针对某330 MW燃煤锅炉设计一套供厂用电的ORC烟气余热发电系统,计算厂用电率、供电热效率、供电煤耗率、供电碳排放强度及投资回收期,分析锅炉耦合ORC发电系统后机组的经济性。结果表明:采用锅炉耦合ORC发电系统后,厂用电率平均降低0.18个百分点,供电热效率平均增加0.07个百分点,供电煤耗率平均降低0.7 g/(kW·h),供电碳排放强度平均降低1.52 g/(kW·h),投资回收期为7.04 a。锅炉耦合ORC烟气余热发电系统具有一定经济性。
The application of organic Rankine cycle(ORC)has outstanding advantages with low-temperature waste heat recovery in boiler.For a 330 MW coal-fired boiler,an ORC power generation system with low-temperature waste heat recovery was designed for power supply within station,and following indicators were calculated,such as the auxiliary power consumption rate,thermal efficiency of power supply,standard coal consumption rate of power supply,carbon emissions intensity of power supply and payback period.After which,an analysis was conducted on the economy of the boiler coupled with ORC power generation system.Results show that,with the application of the boiler coupled with ORC power generation system,the average auxiliary power consumption rate is decreased by 0.18 percentage points,the average thermal efficiency of power supply is increased by 0.07 percentage points,the average standard coal consumption rate of power supply is decreased by 0.7 g/(kW·h),the average carbon emissions intensity of power supply is decreased by 1.52 g/(kW·h),and the payback period of this technology is 7.04 years.The technology of boiler coupled with ORC power generation system through low-temperature waste heat recovery has certain economic benefits.
作者
高建强
颜一聪
李鑫辉
张浩
凌海陶
Gao Jianqiang;Yan Yicong;Li Xinhui;Zhang Hao;Ling Haitao(Department of Power Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)
出处
《发电设备》
2023年第5期298-301,共4页
Power Equipment
关键词
燃煤锅炉
有机兰金循环
经济性
供电碳排放强度
coal-fired boiler
organic Rankine cycle
economy
carbon emissions intensity of power supply
