Reduction of nitrogen-based pollutants through the use of urea s

Details Reduction of nitrogen-based pollutants through the use of urea s Reduction of nitrogen-based pollutants through the use of urea s

1985-10-04

1988-01-12

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C01B 2100

Patent

active

047190922

ABSTRACT:
Disclosed is a process for maintaining low effluent ammonia contents while reducing nitrogen oxides in an effluent from the combustion of a carbonaceous fuel under oxygen-rich conditions which minimize the production of carbon-based pollutants. An aqueous solution of urea and an oxygenated hydrocarbon is injected into an effluent at a temperature above 1600.degree. F., and preferably above 2000.degree. F. The oxygenated hydrocarbon will be employed at a level effective to reduce the levels of free ammonia in the effluent. This is important when burning fuels containing significant sulfur contents because the free ammonia tends to react with the sulfur compounds to produce solid ammonium sulfate and/or bisulfate which can decrease boiler efficiency.

REFERENCES:
patent: 3900554 (1975-08-01), Lyon
patent: 4208386 (1970-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4507269 (1985-03-01), Dean et al.
patent: 4624840 (1986-11-01), Dean et al.

Affiliated with

Also associated with

Rating

Reduction of nitrogen-based pollutants through the use of urea s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduction of nitrogen-based pollutants through the use of urea s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduction of nitrogen-based pollutants through the use of urea s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-920519