魏宁, 姜大霖, 刘胜男, 聂立功, 李小春. 国家能源集团燃煤电厂CCUS改造的成本竞争力分析[J]. 中国电机工程学报, 2020, 40(4): 1258-1265,1416. DOI: 10.13334/j.0258-8013.pcsee.190381
引用本文: 魏宁, 姜大霖, 刘胜男, 聂立功, 李小春. 国家能源集团燃煤电厂CCUS改造的成本竞争力分析[J]. 中国电机工程学报, 2020, 40(4): 1258-1265,1416. DOI: 10.13334/j.0258-8013.pcsee.190381
WEI Ning, JIANG Da-lin, LIU Sheng-nan, NIE Li-gong, LI Xiao-chun. Cost Competitiveness Analysis of Retrofitting CCUS to Coal-fired Power Plants[J]. Proceedings of the CSEE, 2020, 40(4): 1258-1265,1416. DOI: 10.13334/j.0258-8013.pcsee.190381
Citation: WEI Ning, JIANG Da-lin, LIU Sheng-nan, NIE Li-gong, LI Xiao-chun. Cost Competitiveness Analysis of Retrofitting CCUS to Coal-fired Power Plants[J]. Proceedings of the CSEE, 2020, 40(4): 1258-1265,1416. DOI: 10.13334/j.0258-8013.pcsee.190381

国家能源集团燃煤电厂CCUS改造的成本竞争力分析

Cost Competitiveness Analysis of Retrofitting CCUS to Coal-fired Power Plants

  • 摘要: 利用二氧化碳捕集封存与利用技术(CO2capture utilizationandstorage,CCUS)对燃煤电厂进行改造是煤电低碳化和绿色化的重要机遇。研究采用企业层面的CCUS系统评估方法对国家能源集团(原神华)下属燃煤电厂开展了分析。评估方法包括电厂改造、场地适宜性评价、源汇匹配等。分析结果表明:原神华燃煤电厂72 720 MW机组中超过60%的机组具有实施CCUS改造的基础条件;在捕集率为50%(450g/(k W?h)气电标准)、250 km距离匹配、全流程CCUS项目平准化净减排成本低于50 USD/t CO2的条件下,每年可减排CO2约0.51亿吨,煤电总的减排电价约为?10.74~92.03USD/(MW?h)。尽管CO2排放强度略有不同,但部分改造电厂相对于现有燃气发电与风能发电具有一定优势;若考虑技术进步、系统优化和激励政策等变化,CCUS改造的成本将大幅度下降,煤电综合减排电价将更具成本竞争力。

     

    Abstract: The power structure based on pulverized coal power in China will not be fundamentally changed in the near future. The pulverized coal power generation is facing an increasing stress of carbon emission reduction and carbon constrains. The application of carbon dioxide capture, geological storage and utilization(CCUS) retrofitting to existing coal-fired power plants is an important opportunity that can mitigate significant carbon emission. The coal-fired power plants in China Energy Group(former Shenhua Group) was analyzed by a systematical evaluation method for full-chain CCUS retrofitting to coal-fired power plants at the enterprise level. The method includes coal-fired power plants retrofits, site suitability evaluation of CO2 storage, sink-source matching with techno-economic evaluation. The results show that more than 60% of the total 72.72 GW capacity have the basic characteristics to deploy the CCUS retrofits. With an average capture rate of 50%, a matching distance of 250 km, and the levelized avoid cost of a full-chain CCUS project is less than 50 USD/t CO2, about 51 million tons of CO2 will be mitigated annually. When the carbon emission intensity of coal-fired power generation is equivalent to that of natural gas-fired power generation, the feed-in tariffs of coal-fired power generation retrofitted with CCUS ranges from ?10.74 USD/(MW?h) to 92.03 USD/(MW?h), which is more competitive than natural gas electricity and wind power in some provinces in China. Considering dramatically cost cut-down by technological progresses, industry progress optimization and incentive policy in the near future, coal-fired power plants retrofitted with CCUS will be more cost-competitive.

     

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