Use of sulfide-containing liquors for removing mercury from flue gases

Patent · Tue Dec 31 23:00:00 EST 2002

OSTI ID:874976

Nolan, Paul S ^[1]; Downs, William ^[2]; Bailey, Ralph T ^[3]; Vecci, Stanley J ^[2]

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1. North Canton, OH
2. Alliance, OH
3. Uniontown, OH

A method and apparatus for reducing and removing mercury in industrial gases, such as a flue gas, produced by the combustion of fossil fuels, such as coal, adds sulfide ions to the flue gas as it passes through a scrubber. Ideally, the source of these sulfide ions may include at least one of: sulfidic waste water, kraft caustic liquor, kraft carbonate liquor, potassium sulfide, sodium sulfide, and thioacetamide. The sulfide ion source is introduced into the scrubbing liquor as an aqueous sulfide species. The scrubber may be either a wet or dry scrubber for flue gas desulfurization systems.

• Research Organization: BABCOCK & WILCOX CO
• DOE Contract Number: FC22-94PC94251
• Assignee: The Babcock & Wilcox Company (New Orleans, LA); McDermott Technology, Inc. (New Orleans, LA)
• Patent Number(s): US 6503470
• OSTI ID: 874976
• Country of Publication: United States
• Language: English

Related Subjects

/423/
adds
apparatus
aqueous
carbonate
caustic
coal
combustion
desulfurization
dry
flue
flue gas
flue gases
fossil
fossil fuel
fuels
gas
gases
ideally
industrial
industrial gases
introduced
kraft
liquor
liquors
mercury
method
passes
potassium
produced
reducing
removing
scrubber
scrubbing
sodium
source
species
sulfide
sulfide-containing
sulfidic
systems
thioacetamide
waste
water
wet