Effect of HBr formation on mercury oxidation via CaBr2 addition to coal during combustion

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59009-59015 ◽  
Author(s):  
Yang Yang ◽  
Wenqing Xu ◽  
Yinghong Wu ◽  
Jin Xiong ◽  
Tingyu Zhu ◽  
...  
Keyword(s):  
Flue Gas ◽  
Elemental Mercury ◽  
Control Technology ◽  
Mercury Oxidation ◽  
Mercury Control

Adding CaBr2 to coal to enhance elemental mercury (Hg0) oxidation during combustion has been an effective mercury control technology, but the added CaBr2 may increase levels of noxious Br2 or HBr gases in flue gas.

Significance of RuO2Modified SCR Catalyst for Elemental Mercury Oxidation in Coal-fired Flue Gas

2011 ◽  
Vol 45 (13) ◽  
pp. 5725-5730 ◽  
Author(s):  
Naiqiang Yan ◽  
Wanmiao Chen ◽  
Jie Chen ◽  
Zan Qu ◽  
Yongfu Guo ◽  
...  
Keyword(s):  
Flue Gas ◽  
Elemental Mercury ◽  
Mercury Oxidation ◽  
Scr Catalyst

Mechanism and Kinetic Study on Elemental Mercury Oxidation in Flue Gas by Ozone Injection

2017 ◽  
Vol 40 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Zhengcheng Wen ◽  
Zhihua Wang ◽  
Yuan Li ◽  
Kefa Cen
Keyword(s):  
Kinetic Study ◽  
Flue Gas ◽  
Elemental Mercury ◽  
Mercury Oxidation ◽  
Ozone Injection

Effect of flue gas component and ash composition on elemental mercury oxidation/adsorption by NH4Br modified fly ash

2018 ◽  
Vol 345 ◽  
pp. 578-585 ◽  
Author(s):  
Qiang Zhou ◽  
Yufeng Duan ◽  
Mingming Chen ◽  
Meng Liu ◽  
Ping Lu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Elemental Mercury ◽  
Mercury Oxidation ◽  
Ash Composition ◽  
Gas Component ◽  
Modified Fly Ash

Effects of Reaction Conditions on Elemental Mercury Oxidation in Simulated Flue Gas by DC Nonthermal Plasma

2011 ◽  
Vol 50 (10) ◽  
pp. 5914-5919 ◽  
Author(s):  
Meiyan Wang ◽  
Tianle Zhu ◽  
Hongjing Luo ◽  
Hong Wang ◽  
Weiyi Fan
Keyword(s):  
Flue Gas ◽  
Nonthermal Plasma ◽  
Elemental Mercury ◽  
Reaction Conditions ◽  
Mercury Oxidation

Study of Mercury Re-Emission from Simulated Wet Flue Gas Desulfurization Liquors

2012 ◽  
Vol 610-613 ◽  
pp. 2033-2037 ◽  
Author(s):  
Yu Ze Jiang ◽  
Chuan Min Chen ◽  
Li Xing Jiang ◽  
Song Tao Liu ◽  
Bin Wang
Keyword(s):  
Flue Gas ◽  
Total Mercury ◽  
Elemental Mercury ◽  
Operating Conditions ◽  
Flue Gas Desulfurization ◽  
Emission Rates ◽  
Ph Values ◽  
Mercury Control ◽  
Forced Oxidation ◽  
Reducing Substances

Hg2+captured by wet flue gas desulfurization (WFGD) systems can easily be reduced by reducing substances such as S(IV) (SO32-or HSO3-) and results in emissions of elemental mercury (Hg0). The re-emission of Hg0would lead to a damping of the total mercury removal efficiency by WFGD systems. The effects of the operating conditions, which included the pH, temperature, Cl-concentrations and oxygen concentrations, on Hg0re-emission from WFGD liquors was carried out. The experimental results indicated that the Hg0re-emission rate from WFGD liquors increased as the operational temperatures and pH values increased. The Hg0re-emission rates decreased as the O2concentration of flue gas and Cl-concentration of WFGD liquors increased. So the Hg0re-emission from WFGD system can be reduced or slowed by decreasing the temperature and pH, or by using forced oxidation. The present findings could be valuable for industrial application of characterizing and optimizing mercury control in WFGD systems.

Cobalt doped ceria for abundant storage of surface active oxygen and efficient elemental mercury oxidation in coal combustion flue gas

2018 ◽  
Vol 239 ◽  
pp. 233-244 ◽  
Author(s):  
Weichun Yang ◽  
Chaofang Li ◽  
Haiying Wang ◽  
Xingyao Li ◽  
Weilin Zhang ◽  
...  
Keyword(s):  
Flue Gas ◽  
Coal Combustion ◽  
Elemental Mercury ◽  
Active Oxygen ◽  
Doped Ceria ◽  
Mercury Oxidation ◽  
Surface Active
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