ASSESSMENT OF IMPACT OF STACK HEIGHT CHANGES OF COAL-FIRED POWER PLANTS ON AIR QUALITY AND ITS IMPLICATIONS
-
摘要: 为了解火电厂在全面实施"超低排放"后是否仍有必要采用高烟囱排放,以益阳电厂为例,用AERMOD模型模拟2种排放高度(210 m与60 m)在不同气象年对益阳市国控站点大气污染物浓度的影响。结果显示,无论在典型气象年还是不利气象年,临时烟囱(60 m)相比原烟囱(210 m)对各站点大气污染物浓度都有不利影响,导致典型气象年各污染物最大日均浓度增加8.82~20.19 μg/m3,最大年均浓度增加0.91~2.08 μg/m3,不利气象年的影响总体上大于典型气象年。同时,使用临时烟囱排放导致益阳市NO2最大占标率上升21.9%, PM2.5最大占标率上升11.4%,多个站点颗粒物超标天数增加≥2 d。考虑中国仍以煤电为主的现状,以及空气质量改善的迫切需求,因此应审慎考虑大幅降低排放烟囱的高度。Abstract: After the full implementation of ultra-low emission in coal-fired power plants, whether it is still necessary to adopt high stack emission has aroused extensive discussion. In this study, taking the Yiyang Power Plant as an example, the impact of six scenarios based on two emission heights (210 m, 60 m) on the concentrations of air pollutants at the state-controlled monitoring sites in Yiyang were simulated using the AERMOD model. The results showed that in both typical and unfavorable meteorological years, the temporary chimney with a height of 60 m has an adverse effect on the concentrations of air pollutants at each monitoring site, compared to the original chimney with a height of 210 m, resulting in an increase in the maximum daily concentrations of each pollutant in the range of 8.82 μg/m3 to 20.19 μg/m3, and an increase in the maximum annual concentrations of each pollutant in the range of 0.91 to 2.08 μg/m3, and the effect in unfavorable meteorological years was generally greater than that in typical meteorological years. At the same time, the change in emission altitude also has an important effect on the maximum occupancy rate of pollutants and the number of days of pollution exceedance in Yiyang. The maximum occupancy rate of NO2 and PM2.5 increased significantly, and the number of days of particulate matter exceedance increased by more than or equal to 2 days in several monitoring sites. Because coal-fired power generation is still the dominant power source of China, as well as the urgent need for air quality improvement, a significant reduction in the height of emission stacks should be considered prudently.
-
Key words:
- coal-fired power plant /
- AERMOD model /
- air quality /
- change in height of emissions /
- Yiyang
-
[1] 武强, 涂坤, 曾一凡. "双碳"目标愿景下我国能源战略形势若干问题思考[J]. 科学通报, 2023, 68(15): 1884-1898. [2] 中华人民共和国2022年国民经济和社会发展统计公报[J]. 中国统计, 2023, 495(3): 12-29. [3] 岑可法, 倪明江, 高翔, 等. 煤炭清洁发电技术进展与前景[J]. 中国工程科学, 2015, 17(9): 49-55. [4] 周孝信, 赵强, 张玉琼. "双碳"目标下我国能源电力系统发展前景和关键技术[J]. 中国电力企业管理, 2021(31): 14-17. [5] 李政, 张东杰, 潘玲颖, 等. "双碳"目标下我国能源低碳转型路径及建议[J]. 动力工程学报, 2021, 41(11): 905-909. [6] QUISPE D, PEREZ-LOPEZ R, SILVA L F O, et al. Changes in mobility of hazardous elements during coal combustion in Santa Catarina power plant (Brazil)[J]. Fuel, 2012, 94(1): 495-503. [7] 王润芳, 马大卫, 姜少毅, 等.超低排放改造后燃煤电厂细颗粒物排放特征[J]. 环境科学, 2020, 41(1): 98-105. [8] 王润芳, 马大卫, 黄齐顺, 等. 安徽省火电厂超低排放改造对减排成效的影响[J]. 华电技术, 2020, 42(9): 56-62. [9] 刘晋宏, 孔少飞, 冯韵恺, 等. 超低排放燃煤电厂一次颗粒物和黑碳实时排放特征[J]. 地球化学, 2021, 50(1): 56-66. [10] ZHANG X, SUN M, AIKAWA M. Characteristics of PM2.5-bound metals in Japan over six years: spatial distribution, health risk, and source analysis[J]. Journal of Environmental Management, 2023, 344: 118750. [11] 郦建国, 朱法华, 孙雪丽. 中国火电大气污染防治现状及挑战[J]. 中国电力, 2018, 51(6): 2-10. [12] 刘玉彻, 杨洪斌, 梁刚. 气象条件对烟囱污染物影响的模拟研究[J]. 气象与环境学报, 2008,24(1): 18-21. [13] 杨佳财, 王继民, 孙白妮. 电厂烟囱高度确定的技术方法[J]. 环境科学与管理, 2007, 110(1): 176-180. [14] 马学礼, 党立晨, 张仁锋, 等. 不同排放标准下的燃煤电厂烟囱高度与落地浓度关系研究[J]. 环境科学与管理, 2016, 41(11): 23-27. [15] 马学礼, 孙希进, 苏燊燊, 等. 基于超低排放的燃煤电厂烟囱高度优化研究[J]. 中国电力, 2020, 53(5): 179-184. [16] 孔祥应. 热电站采用高烟囱排放是改善大气污染的现实有效措施[J]. 环境工程, 1986(4): 21-24. [17] 符辛竹. 烟气高空排放在金川冶炼化工园区的应用研究[D]. 兰州:兰州大学, 2012. [18] SEANGKIATIYUTH K, SURAPIPITH V, TANTRAKARNAPA K, et al. Application of the AERMOD modeling system for environmental impact assessment of NO2 emissions from a cement complex[J]. Journal of Environmental Sciences, 2011, 23(6): 931-940. [19] 李煜婷, 金宜英, 刘富强. AERMOD模型模拟城市生活垃圾焚烧厂二噁英类物质扩散迁移[J]. 中国环境科学, 2013, 33(6): 985-992. [20] 张尚宣, 伯鑫, 周甜, 等. AERMOD模式在我国环境影响评价应用中的标准化研究[J]. 环境影响评价, 2018, 40(2): 51-55. [21] 马洁云, 易红宏, 唐晓龙, 等. 基于AERMOD及减排政策的昆明市工业区SO2情景模拟[J]. 中国环境科学, 2013, 33(10): 1884-1890. [22] 赵妤希, 任家豪, 陈义珍,等. 气象要素变化对城市空气质量影响的评估方法与应用研究:以PM2.5为例[J]. 中国环境科学,2022, 42(12),5610-5616. [23] 李颖若, 汪君霞, 韩婷婷, 等. 利用多元线性回归方法评估气象条件和控制措施对APEC期间北京空气质量的影响[J]. 环境科学, 2019,40(3): 1024-1034. [24] 尹晓梅, 李梓铭, 熊亚军, 等. 2014—2017北京市气象条件和人为排放变化对空气质量改善的贡献评估[J]. 环境科学, 2019,40(3): 1011-1023. [25] LIANG P F, ZHU T, FANG Y H, et al. The role of meteorological conditions and pollution control strategies in reducing air pollution in Beijing during APEC 2014 and Victory Parade 2015[J]. Atmospheric Chemistry and Physics, 2017, 17(22):13921-13940. [26] 薛文博, 许艳玲, 王金南, 等. 全国火电行业大气污染物排放对空气质量的影响[J]. 中国环境科学, 2016, 36(5): 1281-1288. [27] 陈建平, 兰石, 田犀. 排气筒高度与大气污染物最大落地浓度关系的研究[J]. 工业安全与环保, 2008,34(10): 54-56. [28] TONG D, ZHANG Q, ZHENG Y X, et al. Committed emissions from existing energy infrastructure jeopardize 1.5 ℃ climate target[J]. Nature, 2019, 572(7769): 373-377. [29] 王临清, 朱法华, 赵秀勇. 燃煤电厂超低排放的减排潜力及其PM2.5环境效益[J]. 中国电力, 2014, 47(11): 150-154. [30] WORLD HEALTH ORGANIZATION. Global Air Quality Guidelines: Particulate Matter (PM2.5 and PM10), Ozone, Nitrogen Dioxide, Sulfur Dioxide and Carbon Monoxide [M]. Geneva: World Health Organization, 2021.
点击查看大图
计量
- 文章访问数: 134
- HTML全文浏览量: 29
- PDF下载量: 7
- 被引次数: 0