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Process for reducing nitrogen oxides without generating nitrous oxide

Patent ·
OSTI ID:5435900
; ;
This patent describes a process for the reduction of the concentration of nitrogen oxides in the oxygen rich effluent from the combustion of a carbonaceous fuel, the process comprises: introducing a treatment agent which comprises ammonium carbamate into the effluent which is at a temperature greater than about 1300{degrees} F and in an amount effective to substantially avoid the presence of nitrous oxide.
Assignee:
Fuel Tech, Inc., Stamford, CT (USA)
Patent Number(s):
US 4997631; A
Application Number:
PPN: US 7-489919
OSTI ID:
5435900
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADDITIVES
AIR POLLUTION CONTROL
AMMONIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
GASEOUS WASTES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REDUCTION
WASTES