Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1991-07-31
1992-11-24
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423239, 42324408, C01B 2100
Patent
active
051659026
ABSTRACT:
A method and apparatus for reducing nitrogen dioxide (NO.sub.2) emissions in a dry sodium scrubbing process without significantly reducing sulfur dioxide (SO.sub.2) and nitrogen oxides (NO.sub.x) removal efficiencies. A sodium additive is injected into a flue gas duct carrying flue gas from a combustor to a particulate collection device to remove sulfur dioxide and nitrogen oxides from the flue gas. The flue gas is humidified by introducing water into the flue gas duct at a point upstream of the sodium additive introduction point. Through control of the moisture content of the flue gas and the temperature in the particulate collection device, the amount of NO.sub.2 emissions is reduced to a value below that which causes the creation of a brown plume emanating from the gas stack.
REFERENCES:
patent: 1329737 (1920-02-01), Wolcott
patent: 1329818 (1920-02-01), Wolcott
patent: 3523407 (1970-08-01), Humbert
patent: 3944650 (1976-03-01), Hirota et al.
patent: 3976747 (1976-08-01), Shale et al.
patent: 4325713 (1982-04-01), Rosenberg et al.
patent: 4525142 (1985-06-01), Gleason et al.
patent: 4559211 (1985-12-01), Feldmann et al.
patent: 4600568 (1986-07-01), Yoon et al.
patent: 4604269 (1986-08-01), Yoon
patent: 4613487 (1986-09-01), Yoon et al.
patent: 4620856 (1986-11-01), Rosenberg et al.
patent: 4645652 (1987-02-01), Kimura
patent: 4645653 (1987-02-01), Kimura
patent: 4670238 (1987-06-01), Yoon
patent: 4724130 (1988-02-01), Statnick et al.
patent: 4789531 (1988-12-01), Eichholtz et al.
patent: 4795619 (1989-01-01), Lerner
patent: 4859438 (1989-08-01), Lindbauer et al.
patent: 4865828 (1989-09-01), Lerner
patent: 5002741 (1991-03-01), Hooper
Proof of Concept Testing Of An Integrated Dry Injection System For SO.sub.x /NO.sub.x Control, Quarterly Technical Progress Report, NTIS, May 3, 1989.
Integrated Dry Sorbent Injection For Coal-Fired Boiler SO.sub.x and NO.sub.x Control, AWMA, Jun. 24-29, 1990.
Bortz Steven J.
Podlenski John W.
Research Cottrell, Inc.
Straub Gary P.
Vanoy Timothy C.
LandOfFree
Method and apparatus for reducing nitrogen dioxide emissions in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reducing nitrogen dioxide emissions in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing nitrogen dioxide emissions in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-920233