The Resource Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending, by Shannon D. Serre, Chun Wai Lee

Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending, by Shannon D. Serre, Chun Wai Lee

Label
Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending
Title
Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending
Statement of responsibility
by Shannon D. Serre, Chun Wai Lee
Creator
Contributor
Subject
Language
eng
Summary
"Coal-fired power plants are a major source of mercury (Hg) released into the environment and the utility industry is currently investigating options to reduce Hg emissions. One control option is to utilize existing pollution control equipment such as wet flue gas desulfurization (FGD) scrubbers. The split (speciation) between chemical forms of mercury (Hg) species has a strong influence on the control and environmental fate of Hg emissions from coal combustion. The high-temperature coal combustion process releases Hg in elemental form (Hg0). A significant fraction of the Hg0 can be subsequently oxidized in the low-temperature, post-combustion environment of a coal-fired boiler. Relative to Hg0, oxidized Hg (Hg2+) is more effectively removed by air pollution control systems (APCS). For example, the water-soluble Hg2+ is much more easily captured than insoluble Hg0 in FGD units. Selective catalytic reduction (SCR) technology widely applied for reducing NOX emissions from power plants also affects the speciation of Hg in the coal combustion flue gases. Recent full-scale field tests conducted in the U.S. showed increases in Hg oxidation across the SCR catalysts for plants firing bituminous coals with sulfur (S) content ranging from 1.0 to 3.9%. However, plants firing subbituminous Powder River Basin (PRB) coals which contains significantly lower chlorine (Cl) and sulfur (S) content and higher calcium (Ca) content than those of the bituminous coals, showed very little change in mercury speciation across the SCR reactors. A field study conducted by EPRI showed blending of PRB coal with a bituminous coal (60% PRB/40% bituminous) resulted in increased Hg2+ from 45% at the SCR inlet to 93% at the outlet. Coal blending appears to be a potentially cost effective approach for increasing Hg oxidation for PRB coal-fired SCR systems."--Abstract
Cataloging source
EJB
http://library.link/vocab/creatorName
Serre, Shannon D
Government publication
federal national government publication
Illustrations
charts
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
http://library.link/vocab/relatedWorkOrContributorName
  • Lee, Chun Wai
  • National Risk Management Research Laboratory (U.S.)
http://library.link/vocab/subjectName
  • Coal-fired power plants
  • Mercury
  • Chlorine
  • Coal
Target audience
general
Label
Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending, by Shannon D. Serre, Chun Wai Lee
Link
http://purl.fdlp.gov/GPO/gpo549
Instantiates
Publication
Note
  • Title from title screen (viewed Sept. 16, 2010)
  • "September 2009."
  • "EPA/600/R-09/021."
Bibliography note
Includes bibliographical references (pages 5-1)
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Control code
18857861
Dimensions
unknown
Extent
1 online resource (27 unnumbered pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
digital, PDF file
Specific material designation
remote
System control number
(OCoLC)ocn669991054
Label
Evaluation of the impact of chlorine on mercury oxidation in a pilot-scale coal combustor, the effect of coal blending, by Shannon D. Serre, Chun Wai Lee
Link
http://purl.fdlp.gov/GPO/gpo549
Publication
Note
  • Title from title screen (viewed Sept. 16, 2010)
  • "September 2009."
  • "EPA/600/R-09/021."
Bibliography note
Includes bibliographical references (pages 5-1)
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Control code
18857861
Dimensions
unknown
Extent
1 online resource (27 unnumbered pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
digital, PDF file
Specific material designation
remote
System control number
(OCoLC)ocn669991054

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      39.77004 -86.164015

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