Effect of Coordinated Air Pollution Control Devices in Coal-Fired Power Plants on Arsenic Emissions

An arsenic emission study was performed at nine coal-fired power plants in China and the U.S. that are equipped with various air pollution control devices (APCDs). On average, over 90% of arsenic in the flue gas is captured by the dry particulate matter collection system. Less than 3% of arsenic remains in the boiler slag, and 3% is captured by the desulfurization system. Another 1% is captured by wet precipitators. The remaining arsenic is emitted from the stack. Ultralow-emission technology with a low-temperature economizer before the electrostatic precipitator (ESP) promotes the capture of more arsenic compounds. It was found that reactions between arsenic and the denitrification catalyst make it difficult to reach a perfect arsenic mass balance in a power plant, excluding plants that are equipped with a hot ESP installed before the selective catalytic reduction system. Arsenic speciation greatly depends upon the temperature of the flue gas and the location of the measurement. There are no significant ...

[1]  Ming H Wong,et al.  Arsenic in Chinese coals: distribution, modes of occurrence, and environmental effects. , 2011, The Science of the total environment.

[2]  Ruud Meij,et al.  Trace element behavior in coal-fired power plants , 1994 .

[3]  Guijian Liu,et al.  Distribution and fate of environmentally sensitive elements (arsenic, mercury, stibium and selenium) in coal-fired power plants at Huainan, Anhui, China , 2012 .

[4]  Ralph F. Altman,et al.  WET ELECTROSTATIC PRECIPITATION DEMONSTRATING PROMISE FOR FINE PARTICULATE CONTROL -- PART I , 2001 .

[5]  J. Holson,et al.  An assessment of the developmental toxicity of inorganic arsenic. , 1998, Reproductive toxicology.

[6]  R. Zielinski,et al.  Mode of occurrence of arsenic in feed coal and its derivative fly ash, Black Warrior Basin, Alabama , 2007 .

[7]  V. Strezov,et al.  Speciation of arsenic and selenium in coal combustion products , 2007 .

[8]  Kazuo T. Suzuki,et al.  Arsenic round the world: a review. , 2002, Talanta.

[9]  T. Czech,et al.  Modern electrostatic devices and methods for exhaust gas cleaning: A brief review , 2007 .

[10]  M. P. Ketris,et al.  Arsenic in coal: a review , 2005 .

[11]  Guijian Liu,et al.  Transformation behavior of mineral composition and trace elements during coal gangue combustion , 2012 .

[12]  Noda,et al.  Mercury emissions from a coal-fired power plant in Japan , 2000, The Science of the total environment.

[13]  W. Pan,et al.  Volatilization of Arsenic During Coal Combustion Based on Isothermal Thermogravimetric Analysis at 600–1500 °C , 2016 .

[14]  C. Zevenbergen,et al.  Clay formation and metal fixation during weathering of coal fly ash , 1999 .

[15]  C. Zheng,et al.  [Characterization of arsenic emissions from a coal-fired power plant]. , 2004, Huan jing ke xue= Huanjing kexue.

[16]  W. Pan,et al.  Fine particulate matter emission and size distribution characteristics in an ultra-low emission power plant , 2016 .

[17]  E. Hums.  A catalytically highly-active, arsenic oxide resistant V-Mo-O phase — results of studying intermediates of the deactivation process of V2O5-MoO3-TiO2 (ANATASE) DeNOx catalysts , 1993 .

[18]  Andrei Bologa,et al.  Novel wet electrostatic precipitator for collection of fine aerosol , 2009 .

[19]  B. Gullett,et al.  Reaction Mechanisms of Dry Ca-Based Sorbents with Gaseous HCl , 1995 .

[20]  J. Nriagu,et al.  Quantitative assessment of worldwide contamination of air, water and soils by trace metals , 1988, Nature.

[21]  A. Sarofim,et al.  Distribution of trace elements in selected pulverized coals as a function of particle size and density , 2000 .

[22]  D. Spears,et al.  Geochemistry and origin of elements in some UK coals , 1999 .

[23]  Yong-Jin Kim,et al.  Performance evaluation of dry and wet electrostatic precipitators used in an oxygen-pulverized coal combustion and a CO2 capture and storage pilot plant , 2014 .

[24]  W. Pan,et al.  Partitioning of mercury, arsenic, selenium, boron, and chloride in a full-scale coal combustion process equipped with selective catalytic reduction, electrostatic precipitation, and flue gas desulfurization systems , 2009 .

[25]  C. Romero,et al.  Using modified fly ash for mercury emissions control for coal-fired power plant applications in China , 2016 .

[26]  J. D. Robertson,et al.  Arsenic and lead concentrations in the Pond Creek and Fire Clay coal beds, eastern Kentucky coal field , 1997 .

[27]  Chunyuan Ma,et al.  Electrical characteristics of electrostatic precipitator with a wet membrane-based collecting electrode , 2016 .

[28]  J. Hao,et al.  A Review of Key Hazardous Trace Elements in Chinese Coals: Abundance, Occurrence, Behavior during Coal Combustion and Their Environmental Impacts , 2013 .

[29]  Jost O.L. Wendt,et al.  Trace metal transformation mechanisms during coal combustion , 1994 .

[30]  A. Sarofim,et al.  Modeling arsenic partitioning in coal-fired power plants , 2006 .

[31]  T. Zeng,et al.  Vaporization of arsenic, selenium and antimony during coal combustion , 2001 .

[32]  M. Berg,et al.  Groundwater Arsenic Contamination Throughout China , 2013, Science.