中国煤电生命周期二氧化碳和大气污染物排放相互影响建模分析

doi:10.11930/j.issn.1004-9649.202102023

中国电力 ›› 2021, Vol. 54 ›› Issue (8): 128-135.DOI: 10.11930/j.issn.1004-9649.202102023

中国煤电生命周期二氧化碳和大气污染物排放相互影响建模分析

王彦哲^1,2, 周胜^1,2, 姚子麟³, 欧训民^1,2

1. 清华大学能源环境经济研究所，北京 100084;
2. 清华大学核能与新能源技术研究院，北京 100084;
3. 中核核电运行管理有限公司，浙江嘉兴 314300

收稿日期:2021-02-02 修回日期:2021-06-29 发布日期:2021-08-05
作者简介:王彦哲(1997-),男,硕士研究生,从事能源与气候变化政策研究,E-mail:yz-wang19@mails.tsinghua.edu.cn;周胜(1973-),男,通信作者,副研究员,从事能源与气候变化政策研究,E-mail:zhshinet@tsinghua.edu.cn
基金资助:
国家自然科学基金资助项目(71874096)；秦山核电公司科技项目(核电与其他电力能源全生命周期环保贡献量化项目)

Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China

WANG Yanzhe^1,2, ZHOU Sheng^1,2, YAO Zilin³, OU Xunmin^1,2

1. Institute of Energy, Environment and Economy, Tsinghua University, Beijing 100084, China;
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
3. China Nuclear Power Operation Management Co., Ltd., Jiaxing 314300, China

Received:2021-02-02 Revised:2021-06-29 Published:2021-08-05
Supported by:
This work is supported by the National Natural Science Foundation of China (No. 71874096), Science and Technology Project of Qinshan Nuclear Power Company (Life-Cycle Environmental Contribution of Nuclear Power and Other Electric Energy Sources)

摘要/Abstract

摘要： 煤电在中国电力供应结构中占据主导地位，其环境影响是研究热点之一。建立中国煤电生命周期二氧化碳和大气污染物排放分析模型，基于文献调研构建参数数据库，测算中国煤电的单位发电量排放。结果表明，近年来中国煤电生命周期单位发电量的CO₂、SO₂、NO_x和PM_2.5排放分别为838.6 g/（kW·h）、0.34 g/（kW·h）、0.32 g/（kW·h）和0.08 g/（kW·h）。其中煤电单位发电量大气污染物排放，比实施超低排放改造前，下降幅度超过90%。研究发现，增大单机机组规模和进行超低排放改造能够有效降低煤电发电过程的大气污染物排放，采用煤电燃烧后碳捕集和存储(carbon capture and storage, CCS)处理技术能够使煤电CO₂排放下降到144 g/（kW·h），助力碳中和目标实现。如果不采用更加严格的大气污染物排放标准和处理方式，CCS技术可能会使煤电大气污染物排放强度上升30%~40%，这与碳捕集过程使用的技术有关。

关键词: 煤电, 生命周期分析, 碳排放, 大气污染物排放, 超低排放, 碳捕集和存储

Abstract: Coal power occupies a dominant position in China's power supply structure, and its environmental impact has been the hotspot for research. This study established a life cycle analysis model for CO₂ and air pollutant emissions of coal power in China, built a database of coal-power’s parameters based on literature review and calculated the emissions per kW·h. The results show that the average life cycle CO₂ emissions per kW·h from China’s coal power is 838.6 g/(kW·h) in recent years, and the SO₂, NO_x, and PM_2.5 emissions are 0.34 g/(kW·h), 0.32 g/(kW·h), and 0.08 g/(kW·h), respectively. The air pollutant emissions per kW·h have fallen by more than 90%, mainly due to the ultra-low emission transformations of coal power in China. Research also indicates that the air pollutant emissions from the coal power can be effectively reduced by increasing the single-unit capacity and carrying out ultra-low emission retrofits, and the CO₂ emissions can be reduced to 144 g/(kW·h) by use of the carbon capture and storage (CCS) technology for coal-fired power, which can help achieve the carbon neutralization goal in China. If stricter air pollutant emission standards and treatment methods are not adopted, the CCS technology may increase the air pollutant emissions per kW·h from coal fired power by about 30% to 40%, which is related to the technology used in the carbon capture process.

Key words: coal power, life cycle analysis, carbon emissions, air pollutant emissions, ultra-low emission transformation, carbon capture and storage (CCS)

王彦哲, 周胜, 姚子麟, 欧训民. 中国煤电生命周期二氧化碳和大气污染物排放相互影响建模分析[J]. 中国电力, 2021, 54(8): 128-135.

WANG Yanzhe, ZHOU Sheng, YAO Zilin, OU Xunmin. Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China[J]. Electric Power, 2021, 54(8): 128-135.

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中国煤电生命周期二氧化碳和大气污染物排放相互影响建模分析

Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China

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中国煤电生命周期二氧化碳和大气污染物排放相互影响建模分析

Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China

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