Alkaline sorbent injection for mercury control

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874349

Madden, Deborah A ^[1]; Holmes, Michael J ^[2]

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1. Boardman, OH
2. Washington Township, Stark County, OH

A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.

• Research Organization: BABCOCK & WILCOX CO
• DOE Contract Number: FC22-94PC94251
• Assignee: McDermott Technology, Inc. (New Orleans, LA)
• Patent Number(s): US 6372187
• OSTI ID: 874349
• Country of Publication: United States
• Language: English

Related Subjects

alkaline
sorbent
injection
mercury
control
removal
removing
combustion
flue
gases
provided
sorbents
extremely
stoichiometric
molar
ratios
earth
alkali
metal
sulfur
10
injected
power
plant
locations
remove
40
60
content
amounts
gas
stream
rate
particulate
filter
mercury-containing
particles
downstream
alkali metal
gas stream
alkaline earth
power plant
flue gas
molar ratio
flue gases
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