Research on structural integration of thermodynamic system for double reheat coal-fired unit with CO2 capture

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Wang, Lanjing^1 ; Shao, Wenjing^1 ; Wang, Zhiyue^1 ; Fu, Wenfeng^1 ; Zhao, Wensheng^1

North China Electric Power University, Hebei Province Baoding

071003, China^1

关键词: Carbon dioxide capture;    Chemical absorption;    Coal-fired power plant;    High-pressure cylinders;    Structural integration;    Thermal efficiency;    Thermodynamic systems;    Ultra super critical;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/4/042038/pdf
DOI  :  10.1088/1755-1315/121/4/042038

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Taking the MEA chemical absorption carbon capture system with 85% of the carbon capture rate of a 660MW ultra-super critical unit as an example,this paper puts forward a new type of turbine which dedicated to supply steam to carbon capture system. The comparison of the thermal systems of the power plant under different steam supply schemes by using the EBSILON indicated optimal extraction scheme for Steam Extraction System in Carbon Capture System. The results show that the cycle heat efficiency of the unit introduced carbon capture turbine system is higher than that of the usual scheme without it. With the introduction of the carbon capture turbine, the scheme which extracted steam from high pressure cylinder' s steam input point shows the highest cycle thermal efficiency. Its indexes are superior to other scheme, and more suitable for existing coal-fired power plant integrated post combustion carbon dioxide capture system.