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

被引：5

作者：

Jiang, Yuze ^{[1
]}

Chen, Chuanmin ^{[2
]}

Jiang, Lixing ^{[2
]}

Liu, Songtao ^{[2
]}

Wang, Bin ^{[1
]}

机构：

[1] Shandong Elect Power Res Inst, Jinan 250002, Peoples R China

[2] North China Elect Power Univ, Sch Environm Sci & Technol, Baoding 071003, Peoples R China

来源：

PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-4 | 2013年 / 610-613卷

基金：

中国国家自然科学基金;

关键词：

Wet flue gas desulfurization liquors; Mercury removal; Hg2+ reduction; Re-emission; ELEMENTAL MERCURY; SCRUBBER; REMOVAL;

D O I：

10.4028/www.scientific.net/AMR.610-613.2033

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：

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 (Hg-0). The re-emission of Hg would 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 Hg-0 re-emission from WFGD liquors was carried out. The experimental results indicated that the Hg-0 re-emission rate from WFGD liquors increased as the operational temperatures and pH values increased. The Hg-0 re-emission rates decreased as the O-2 concentration of flue gas and Cl- concentration of WFGD liquors increased. So the Hg-0 re-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.

引用

页码：2033 / +

页数：2

共 12 条

[1]

[Anonymous], [No title captured]

[2] Simulation and evaluation of elemental mercury concentration increase in flue gas across a wet scrubber [J].

Chang, JCS ;

Ghorishi, SB .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2003, 37 (24) :5763-5766

[3]

Abad-valle P, 2009, FUEL, V88, P1194

[4] Photochemical removal of mercury from flue gas [J].

Granite, EJ ;

Pennline, HW .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2002, 41 (22) :5470-5476

[5] Superior activity of MnOx-CeO2/TiO2 catalyst for catalytic oxidation of elemental mercury at low flue gas temperatures [J].

Li, Hailong ;

Wu, Chang-Yu ;

Li, Ying ;

Zhang, Junying .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 111 :381-388

[6] A mechanism study of chloride and sulfate effects on Hg2+ reduction in sulfite solution [J].

Liu, Yue ;

Wang, Yuejun ;

Wu, Zhongbiao ;

Zhou, Siyao ;

Wang, Haiqiang .

FUEL, 2011, 90 (07) :2501-2507

[7] Study of elemental mercury re-emission in a simulated wet scrubber [J].

Omine, Naruhito ;

Romero, Carlos E. ;

Kikkawa, Hirofumi ;

Wu, Song ;

Eswaran, Sandhya .

FUEL, 2012, 91 (01) :93-101

[8] Status review of mercury control options for coal-fired power plants [J].

Pavlish, JH ;

Sondreal, EA ;

Mann, MD ;

Olson, ES ;

Galbreath, KC ;

Laudal, DL ;

Benson, SA .

FUEL PROCESSING TECHNOLOGY, 2003, 82 (2-3) :89-165

[9] Control of mercury emissions from coal-fired in electric utility boilers [J].

Srivastava, RK ;

Hutson, N ;

Martin, B ;

Princiotta, F ;

Staudt, J .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (05) :1385-1393

[10] Gas-phase elemental mercury removal by novel carbon-based sorbents [J].

Tan, Zengqiang ;

Sun, Lushi ;

Xiang, Jun ;

Zeng, Hancai ;

Liu, Zihong ;

Hu, Song ;

Qiu, Jianrong .

CARBON, 2012, 50 (02) :362-371

← 1 2 →