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燃煤电厂烟气降温过程中多环芳烃分布特征
引用本文:赵承美,余国忠,孙俊民,刘惠永.燃煤电厂烟气降温过程中多环芳烃分布特征[J].中国环境监测,2010,26(5):65-69.
作者姓名:赵承美  余国忠  孙俊民  刘惠永
作者单位:1. 信阳师范学院城市与环境科学系,河南,信阳,464000
2. 清华同方能源环境公司,北京,100084
基金项目:国家自然科学基金项目(40102013)
摘    要:分别以燃用褐煤与烟煤无烟煤的2个电厂为例,研究2个电厂烟气降温过程中多环芳烃的分布及转化特征。研究表明,萘、菲、苯并 蒽和苯并 芘4种多环芳烃在烟气降温过程中呈过渡分子状态,在适当的条件下,存在相互转化的可能性;萘、菲、苯并 蒽和苯并 芘在不同的电厂随飞灰粒径变化所表现出来的吸附特性不同,颗粒的粒度影响多环芳烃的形成与吸附。在烟气降温过程中飞灰表面吸附的萘、菲、苯并 蒽和苯并 芘含量随着飞灰粒径的变小呈现出逐渐增加的趋势。

关 键 词:燃煤电厂  多环芳烃  静电除尘器
收稿时间:2009/12/8 0:00:00
修稿时间:2010/6/29 0:00:00

Distribution Characteristics of Polycyclic Aromatic Hydrocarbons in Flue Gas Cooling Process From Coal-Fired Plants Emissions
ZHAO Cheng-mei.Distribution Characteristics of Polycyclic Aromatic Hydrocarbons in Flue Gas Cooling Process From Coal-Fired Plants Emissions[J].Environmental Monitoring in China,2010,26(5):65-69.
Authors:ZHAO Cheng-mei
Institution:Department of City& Environment science, Xinyang Normal Univisity, Xinyang 464000, China;Department of City& Environment science, Xinyang Normal Univisity, Xinyang 464000, China
Abstract:The samples were selected from two coal-fired plants which combust lignite and bituminous coal, distribution characteristics of polycyclic aromatic hydrocarbons in flue gas cooling process were studied. The results show four polycyclic aromatic hydrocarbons (including Naphthalene, Phenanthrene, Benzo anthracene and Benzo pyrene) exist in transition molecules state in flue gas cooling process. There is a reciprocal transformation possibility among polycyclic aromatic hydrocarbons in suitable conditions. Adsorption traits of four polycyclic aromatic hydrocarbons are different in different granularity fly ash. Particles granularity influences formation and adsorption of polycyclic aromatic hydrocarbons. With the decrease of particles granularity, the content of individual polycyclic aromatic hydrocarbon is increased.
Keywords:Coal-fired plant  Polycyclic aromatic hydrocarbons  Electrostatic precipitator
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