Removal of sulfur and nitrogen containing pollutants from discharge gases

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865841

Joubert, James I ^[1]

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1. Pittsburgh, PA

Oxides of sulfur and of nitrogen are removed from waste gases by reaction with an unsupported copper oxide powder to form copper sulfate. The resulting copper sulfate is dissolved in water to effect separation from insoluble mineral ash and dried to form solid copper sulfate pentahydrate. This solid sulfate is thermally decomposed to finely divided copper oxide powder with high specific surface area. The copper oxide powder is recycled into contact with the waste gases requiring cleanup. A reducing gas can be introduced to convert the oxide of nitrogen pollutants to nitrogen.

• Research Organization: USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4587113
• OSTI ID: 865841
• Country of Publication: United States
• Language: English

Related Subjects

removal
sulfur
nitrogen
containing
pollutants
discharge
gases
oxides
removed
waste
reaction
unsupported
copper
oxide
powder
form
sulfate
resulting
dissolved
water
effect
separation
insoluble
mineral
ash
dried
solid
pentahydrate
thermally
decomposed
finely
divided
specific
surface
recycled
contact
requiring
cleanup
reducing
gas
introduced
convert
specific surface
thermally decomposed
waste gases
reducing gas
waste gas
copper oxide
finely divided
oxide powder
nitrogen containing
mineral ash
form solid
thermally decompose
effect separation
discharge gas
copper sulfate
resulting copper
discharge gases
/423/