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Title: Apparatus for control of mercury

Patent ·
OSTI ID:873963
 [1];  [2]
  1. Alliance, OH
  2. Uniontown, OH
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A method and apparatus for reducing mercury in industrial gases such as the flue gas produced by the combustion of fossil fuels such as coal adds hydrogen sulfide to the flue gas in or just before a scrubber of the industrial process which contains the wet scrubber. The method and apparatus of the present invention is applicable to installations employing either wet or dry scrubber flue gas desulfurization systems. The present invention uses kraft green liquor as a source for hydrogen sulfide and/or the injection of mineral acids into the green liquor to release vaporous hydrogen sulfide in order to form mercury sulfide solids.

Research Organization:
BABCOCK & WILCOX CO
DOE Contract Number:
FC22-94PC94251
Assignee:
McDermott Technology, Inc. (New Orleans, LA)
Patent Number(s):
US 6284199
OSTI ID:
873963
Country of Publication:
United States
Language:
English

References (5)

Advanced Emissions Control Development Program report March 2001
Uptake of Elemental Mercury Vapors by Activated Carbons journal March 1996
Enhanced control of mercury emissions through modified speciation report July 1997
Advanced Emissions Control Development Program report October 1998
The fate of mercury in coal-fired power plants and the influence of wet flue-gas desulphurization journal April 1991

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Related Subjects

apparatus
control
mercury
method
reducing
industrial
gases
flue
gas
produced
combustion
fossil
fuels
coal
adds
hydrogen
sulfide
scrubber
process
contains
wet
applicable
installations
employing
dry
desulfurization
systems
kraft
green
liquor
source
injection
mineral
acids
release
vaporous
form
solids
mineral acid
gas desulfurization
dry scrubber
hydrogen sulfide
flue gas
industrial process
gas produced
fossil fuel
scrubber flue
fossil fuels
wet scrubber
industrial gases
industrial gas
green liquor
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