Life-Cycle Environmental Impact Assessment of a Typical 2×200 MW Natural Gas Combined Cycle-Combined Heat and Power Plant

doi:10.11930/j.issn.1004-9649.2014.12.149.6

Abstract

Abstract: Jiangsu Province has witnessed vigorous development of natural gas combined cycle(NGCC)-combined heat and power (CHP) plant in recent years. In 2012, the utilization of natural gas in Jiangsu Province ranked first in China. The life cycle assessment of a typical 2×200 MW natural gas combined cycle-combined heat and power plant is proposed in this paper. The life cycle assessment(LCA) results indicate that the indicators, such as Chinese abiotic depletion potential (CADP), global warning potential (GWP) and acidification potential (AP), are important environmental impact categories in this type of co-generation plant. In contrast, the indicator of respiratory inorganics (RI) is minor. Plant operation contributes to all environmental impact categories, especially CADP and GWP. Natural gas exploitation and pipeline transportation only markedly contribute to AP and RI. Finally, construction & decommissioning contributes less to all the indicators. Compared with coal-fired power, natural gas has greater advantages in terms of environmental impacts. Compared with coal-fired power, the GWP, AP and RI of natural gas-fired power account for 20%, 15% and 5% of those of coal-fired power, respectively. However, due to the scarcity of natural gas resources, the CADP of natural gas-fired power is 3~3.5 times of that of coal-based power.

Key words: natural gas, combined heat and power, life cycle, environmental impact, categories, assessment

CLC Number:

TE99

SONG Guo-hui, TANG Lu, JIANG Wu, XIAO Jun. Life-Cycle Environmental Impact Assessment of a Typical 2×200 MW Natural Gas Combined Cycle-Combined Heat and Power Plant[J]. Electric Power, 2014, 47(12): 149-155.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.12.149.6

https://www.electricpower.com.cn/EN/Y2014/V47/I12/149

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