汞的均相氧化机理模型的比较与研究  

COMPARISON AND RESEARCH ON THE MECHANISMS OF HOMOGENEOUS MERCURY OXIDATION

作　　者：詹靖[1] 徐明厚[1] 乔瑜[1] 韩军[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《中国电机工程学报》2004年第1期196-200,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目(20277014);国家重点基础研究专项经费项目(G1999022212-05)。

摘　　要：该文以5种汞的均相氧化反应机理模型为研究对象,对几种反应模型中各种组分的反应级数进行了比较和研究,得出了整个反应系统的反应级数的范围。同时,文中对各模型的表观活化能进行了比较,并对各反应系统的表观活化能在T=1000K附近的突降现象给出了可能的解释。该文所考虑的反应物组分包括HCl、Cl2、O2,采用的反应机理模型都是近年来所公认的比较成熟的模型。通过相应的计算和比较发现,Cl2为汞均相氧化模型中的主要氧化剂,O2亦为反应系统中一个不可忽视的因素,而HCl对于汞的氧化贡献较小。这一结果与近年来的报道是一致的。The reaction order of each component in five homogeneous Hg0 reaction models is compared in this paper. The range of the reaction order as well as the apparent activation energy Ea of the whole reaction system are obtained by thecomparison. Reasonable explanation on sudden decrease of the apparent activation energy Ea at the reaction temperature of1000K is provided. The reaction components considered in this study include HCl,Cl2,O2 and the reaction models used in this paper are commonly acceptable in recent research in this field. The calculation and comparison results show that Cl2 is a main oxidizer in homogeneous Hg0 reaction models, and O2 is an un-neglected factor in mercury oxidation, while HCl has anunnoticeable effect on the oxidation of Hg. This conclusion is consisted with recent research results in the literature.

关 键 词：电力行业 汞 均相氧化机理模型 废弃物焚化 湿法 脱硫 

分 类 号：X773[环境科学与工程—环境工程]