Health risk analysis of nitrosamine emissions from CO2 capture with monoethanolamine in coal-fired power plants
Health risk analysis of nitrosamine emissions from CO2 capture with monoethanolamine in coal-fired power plants
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燃煤电厂单乙醇胺捕集二氧化碳亚硝胺排放健康风险分析
DOI：
10.1016/j.ijggc.2013.09.016
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发表时间：
2014
影响因子：
3.9
通讯作者：
Shang Minghua
中科院分区：
文献类型：
--
作者：
Zhang Yuanyuan;Xu Jiayu;Zhang Yu;Zhang Jian;Li Qingfang;Liu Haili;Shang Minghua
基于单乙醇胺（MEA）的化学吸收技术广泛应用于燃煤电厂的烟气捕集过程。然而，化学致癌物，如亚硝胺，在MEA降解过程中释放出来，特别是在吸收器的顶部。本研究分析了5个不同能力的co2捕集电厂，考察了下风方向亚硝胺暴露浓度。在健康风险评估中，在10 - 4和10 - 6风险下计算耐受暴露浓度。在华北平原典型气象条件（混合高度为1000 m，参考风速计高度为10 m，风速为5 m/s，大气稳定性为d）下，计算了365、3000、40,000、146,000和1,000,000 t/a 5种情景的安全距离d’。排放率和排放物高度会影响安全距离。当亚硝胺直接从吸收器排放时，根据10−6个风险值分别为0、0、0、1580和5700 m。当亚硝胺从发电厂的烟囱中排放出来时，亚硝胺的健康风险可以忽略不计。虽然结果非常不确定，但应关注亚硝胺排放对健康的影响，并有必要进一步研究以彻底调查亚硝胺的排放率。
Monoethanolamine (MEA)-based chemical absorption is extensively used in the capture processes of coal-fired power plants from flue gas. However, chemical carcinogens, such as nitrosamine, are released during MEA degradation, especially at the top of the absorber. This study analyzed five CO2capture power plants with various capacities, and investigated nitrosamine exposure concentration at downwind direction. Tolerant exposure concentration was calculated under 10−4and 10−6risks during the health risk assessment. Safety distancesD′ for the five scenarios (365, 3000, 40,000, 146,000, and 1,000,000 t/a) were calculated as first screening under the typically meteorological conditions over North China Plain (mixing height 1000 m, wind speed 5 m/s measured at reference anemometer height of 10 m, and atmospheric stabilityD). The emission rate and discharge height will affect the safety distanceD′. When nitrosamines are directly emitted from absorber, the valuesD′ are 0, 0, 0, 1580, and 5700 m based on 10−6risks. When nitrosamines are emitted from stacks of power plant, the health risks of nitrosamines can be negligible. Although the results were very uncertain, the health effects of nitrosamine emissions should be concerned and further studies are necessary to thoroughly investigate the emission rate of nitrosamines.
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DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
D. Cozzie;S. Kroner
通讯作者：
D. Cozzie;S. Kroner
DOI：
10.1016/j.egypro.2009.01.186
发表时间：
2009-02
期刊：
Energy Procedia
影响因子：
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作者：
F. Kozak;Petig Arlyn;E. Morris;R. Rhudy;D. Thimsen
通讯作者：
F. Kozak;Petig Arlyn;E. Morris;R. Rhudy;D. Thimsen
影响因子：
5.7
作者：
Huncharek, M;Kupelnick, B
通讯作者：
Kupelnick, B
DOI：
--
发表时间：
2009-11
期刊：
--
影响因子：
--
作者：
M. Lag;A. Andreassen;C. Instanes;B. Lindeman
通讯作者：
M. Lag;A. Andreassen;C. Instanes;B. Lindeman
影响因子：
4.2
作者：
Chi, S;Rochelle, GT
通讯作者：
Rochelle, GT