Influences of NO on mercury adsorption characteristics for HBr modified fly ash

被引：22
|
作者：
Zhang, Yongsheng [1 ]
Zhao, Lilin [1 ,2 ]
Guo, Ruitao [1 ]
Wang, Jiawei [1 ]
Cao, Yan [1 ,3 ]
Orndorff, William [3 ]
Pan, Wei-ping [1 ,3 ]
机构：
[1] North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China
[2] China Int Engn Consulting Corp, Resources & Environm Business Dept, Beijing 100048, Peoples R China
[3] Western Kentucky Univ, Inst Combust Sci & Environm Technol, Bowling Green, KY 42101 USA
来源：
INTERNATIONAL JOURNAL OF COAL GEOLOGY | 2017年 / 170卷
基金：
国家高技术研究发展计划(863计划);
关键词：
Mercury; NO; Modified fly ash; Entrained-flow reactor; Thermal decomposition; ENTRAINED-FLOW REACTOR; FIRED POWER-PLANT; SCALE SLIPSTREAM REACTOR; COMBUSTION FLUE-GAS; COAL COMBUSTION; ACTIVATED CARBON; BITUMINOUS COAL; REMOVAL; EMISSIONS; OXIDATION;
D O I：
10.1016/j.coal.2016.10.002
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Using waste fly ash for mercury capture applications is an attractive, low-cost option for power plants. In this paper, the influence of nitric oxide (NO) on the mercury adsorption characteristics of HBr modified fly ash in an entrained-flow reactor was investigated using continuous monitoring and thermal decomposition methods. The results show that the adsorption efficiency of mercury by HBr modified fly ash was significantly enhanced when NO was added to the flue gas. Additionally, the rate of change of mercury concentration in the flue gas was increased due to increasing NO. The mercury adsorbed by HBr modified fly ash, in the entrained-flow reactor, exists primarily in two forms, HgBr2 and HgO. In the experiments of mercury adsorption with HBr Modified fly ash on the entrained-flow reactor, NO mainly augmented the generation of HgBr2. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：77 / 83
页数：7
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