Impact of Flue Gas Species and Temperature on Mercury Oxidation

Systematic experimental research has been conducted in a fixed-bed reactor system to determine the impact of coal-fired flue gas species and temperature on mercury oxidation. This work focuses on the temperatures range of 200℃ to 800℃ to demonstrate that temperature is a critical factor for the effe...

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Bibliographic Details
Published inTsinghua science and technology Vol. 15; no. 4; pp. 418 - 425
Main Author 陶叶 禚玉群 张亮 陈昌和 徐旭常
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2010
Subjects
HCl
mercury speciation
SO 2
temperature
反应器系统
气体成分
氧化过程
氮氧化物
温度范围
HCl
mercury speciation
temperature
SO 2
NO
Online AccessGet full text
ISSN1007-0214
1878-7606
1007-0214
DOI10.1016/S1007-0214(10)70082-1

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Summary:Systematic experimental research has been conducted in a fixed-bed reactor system to determine the impact of coal-fired flue gas species and temperature on mercury oxidation. This work focuses on the temperatures range of 200℃ to 800℃ to demonstrate that temperature is a critical factor for the effect of the gas components on the mercury oxidation process. Among the investigated gases, hydrogen chloride is es- sential for oxidizing the elemental mercury. Nitrogen oxide was also found to have a positive correlation with the mercury oxidation when hydrogen chloride was present. Sulfur dioxide can either promote or inhibit the oxidation depending on the conditions; however, when nitrogen oxide is also present, sulfur dioxide has a negative impact. Ammonia exhibits an strong inhibitory effect. Several plausible mercury oxidation pathways are suggested in this paper.
Bibliography:11-3745/N
NO
X511.032.3
SO2
TP274
mercury speciation
temperature
mercury speciation; temperature; HCI; NO; SO2
HCI
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1007-0214
1878-7606
1007-0214
DOI:10.1016/S1007-0214(10)70082-1