Comparative analysis of gas and coal-fired power generation in ultra-low emission condition using life cycle assessment (LCA)

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Yin, Libao^1 ; Liao, Yanfen^2 ; Liu, Guicai^2 ; Liu, Zhichao^2 ; Yu, Zhaosheng^2 ; Guo, Shaode^2 ; Ma, Xiaoqian^2

Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou

510080, China^1

School of Electric Power, South China University of Technology, Guangzhou

510640, China^2

关键词: Coal-fired power generation;    Combined heat and power generation;    Comparative analysis;    Energy saving and emission reductions;    Gas power generations;    Generating efficiencies;    Natural gas combined cycles;    Transportation distance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012054/pdf
DOI  :  10.1088/1757-899X/199/1/012054

来源: IOP

【 摘 要 】

Energy consumption and pollutant emission of natural gas combined cycle power-generation (NGCC), liquefied natural gas combined cycle power-generation (LNGCC), natural gas combined heat and power generation (CHP) and ultra-supercritical power generation with ultra-low gas emission (USC) were analyzed using life cycle assessment method, pointing out the development opportunity and superiority of gas power generation in the period of coal-fired unit ultra-low emission transformation. The results show that CO2emission followed the order: USC>LNGCC>NGCC>CHP; the resource depletion coefficient of coal-fired power generation was lower than that of gas power generation, and the coal-fired power generation should be the main part of power generation in China; based on sensitivity analysis, improving the generating efficiency or shortening the transportation distance could effectively improve energy saving and emission reduction, especially for the coal-fired units, and improving the generating efficiency had a great significance for achieving the ultra-low gas emission.