Study on the performance of coal-fired power plant integrated with Ca-looping CO2 capture system with recarbonation process
Study on the performance of coal-fired power plant integrated with Ca-looping CO2 capture system with recarbonation process
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结合钙循环CO2捕集系统和再碳酸化过程的燃煤电厂性能研究
DOI：
10.1016/j.energy.2016.09.077
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发表时间：
2016
期刊：
影响因子：
9
通讯作者：
Xiaohui Yu
中科院分区：
文献类型：
--
作者：
Liqiang DUAN;Tao Feng;Shilun JIA;Xiaohui Yu
本文研究了燃煤电厂与钙环CO_2捕集系统结合的再碳化过程的性能。利用ASPEN PLUS™软件对有、无碳酸化过程的钙环CO2捕集系统进行了模拟，并集成于某燃煤电厂，净系统效率为41.57%。对两种系统的仿真结果进行了比较，并对关键参数进行了灵敏度分析。结果表明，当CO2捕获率为85%时，燃煤电厂与传统钙环CO2捕集系统相结合的系统净效率为30.66%。与没有捕获二氧化碳的基准燃煤电厂相比，效率下降了10.91%。燃煤电厂采用碳酸钙环二氧化碳捕集系统后，净效率为34.3%，效率损失仅为7.27%。分析结果表明，在循环中减少钙剂和新鲜脱硫剂的投加量，可以进一步提高整个系统的效率。本文的研究成果将为低能耗燃煤电厂的CO2捕集提供有价值的参考。
This paper studies the performance of a coal-fired power plant integrated with Ca-looping CO2capture system with recarbonation process. The Ca-looping CO2capture system with/without the recarbonation process are simulated using the ASPEN PLUS™ software and integrated in a coal-fired power plant with the net system efficiency of 41.57%. Simulation results of the two systems are compared, and a sensitivity analysis of the key parameters is taken. The results show that, when the CO2capture rate is 85%, the net system efficiency of the coal-fired power plant integrated with the traditional Ca-looping CO2capture system without recarbonation process is 30.66%. The efficiency penalty is 10.91% compared with that of the benchmark coal-fired power plant without CO2capture. While the net efficiency of the coal-fired power plant integrated with the Ca-looping CO2capture system with recarbonation process is 34.3% and the efficiency penalty is only 7.27%. The analysis results show that reducing the amounts of both calcium sorbents and the fresh sorbent supplement in cycles can further improve the efficiency of the overall system. The achievements from this paper will provide the valuable reference for the CO2capture from the coal-fired power plant with lower energy consumption.