Method for converting noxious pollutants from flue gas into merchantable by-products

Patent · Tue Jul 27 00:00:00 EDT 1993

OSTI ID:6193214

Johnson, A F

A method is described for removing pollutants from boiler plant flue gases comprising the steps of: (a) exchanging heat between a flue gas which contains SO[sub 2], SO[sub 3] and NO pollutants and a first fluid to cool the flue gas down to a first temperature whereat substantially all SO[sub 3] in the flue gas is combined with H[sub 2]O; (b) condensing the SO[sub 3] and H[sub 2]O from the flue gas as a first condensate; (c) adding a solution containing an ammoniacal substance and a detergent to said flue gas to produce soapsuds and sulfates including ammonium bisulfate; (d) collecting the soap suds and ammonium bisulfate produced after said adding step and the first condensate as a first solution; and (e) separating ammonium bisulfate from said first solution.

• Assignee: IMS; EDB-93-115857
• Patent Number(s): US 5230870; A
• Application Number: PPN: US 7-888931
• OSTI ID: 6193214
• Resource Relation: Patent File Date: 26 May 1992
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
01 COAL, LIGNITE, AND PEAT
AMMONIUM SULFATES
MATERIALS RECOVERY
FLUE GAS
DENITRIFICATION
DESULFURIZATION
COOLING
HEAT TRANSFER
NITRIC OXIDE
SULFUR DIOXIDE
SULFUR TRIOXIDE
VAPOR CONDENSATION
WATER
AMMONIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY TRANSFER
GASEOUS WASTES
HYDROGEN COMPOUNDS
MANAGEMENT
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PROCESSING
SULFATES
SULFUR COMPOUNDS
SULFUR OXIDES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
010800 - Coal
Lignite
& Peat- Waste Management