SOX/NOX sorbent and process of use

Patent · 31 December 1994

OSTI ID:869871

Ziebarth, Michael S ^[1]; Hager, Michael J ^[2]; Beeckman, Jean W ^[1]; Plecha, Stanislaw ^[2]

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1. Columbia, MD
2. Baltimore, MD

An alumina sorbent capable of adsorbing NOx and SOx from waste gases and being regenerated by heating above 600.degree. C. is made by incorporating an alumina stabilizing agent into the sorbent. A preferred method is to add the stabilizer when the alumina is precipitated. The precipitated powder is formed subsequently into a slurry, milled and dripped to form the stabilized spheroidal alumina particles. These particles are impregnated with an alkali metal or alkaline earth metal to form the stabilized sorbent. Alumina stabilizers include one or more of silica, lanthana, other rare earths, titania, zirconia and alkaline earths.

• Research Organization: MK-FERGUSON CO
• DOE Contract Number: AC22-89PC88889
• Assignee: W. R. Grace & Co.-Conn. (New York, NY)
• Patent Number(s): US 5413771
• OSTI ID: 869871
• Country of Publication: United States
• Language: English

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adsorbing
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alkali
alkali metal
alkaline
alkaline earth
alumina
alumina particles
alumina sorbent
alumina stabilizing
capable
degree
dripped
earth
earth metal
earths
form
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gases
heating
impregnated
incorporating
lanthana
metal
method
milled
nox
nox sorbent
particles
powder
precipitated
preferred
preferred method
process
rare
rare earth
rare earths
regenerated
silica
slurry
sorbent
sorbent capable
sox
spheroidal
stabilized
stabilizer
stabilizers
stabilizing
stabilizing agent
subsequently
titania
waste
waste gas
waste gases
zirconia