Method for reducing the nitrogen oxide concentration in gases

Details Method for reducing the nitrogen oxide concentration in gases Method for reducing the nitrogen oxide concentration in gases

2006-04-27

2010-06-29

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C423S239200

Reexamination Certificate

active

07744839

ABSTRACT:
The method comprises passing an N2O- and NOx-containing gas over a sequence of two catalyst beds, adding reducing agents for NOxand for N2O between the catalyst beds in such an amount that not only NOxbut also a predetermined proportion of N2O is reduced. The reaction conditions are set so that the N2O content of the gas is reduced by not more than 95%, based on the N2O content at the entrance of the first catalyst bed, by decomposition to nitrogen and oxygen in the first catalyst bed and that not only chemical reduction of NOxbut also chemical reduction of N2O occurs in the second catalyst bed so that the N2O content of the gas is reduced by at least 50%, based on the N2O content at the entrance of the second catalyst bed.

REFERENCES:
patent: 4571329 (1986-02-01), Kato et al.
patent: 7462340 (2008-12-01), Schwefer et al.
patent: 2002/0044902 (2002-04-01), Delahay et al.
patent: 2002/0127163 (2002-09-01), Chen et al.
patent: 2003/0143141 (2003-07-01), Schwefer et al.
patent: 2004/0109805 (2004-06-01), Schwefer et al.
patent: 2005/0244320 (2005-11-01), Schwefer et al.
patent: 2006/0051277 (2006-03-01), Schwefer et al.
patent: 10226461 (2004-01-01), None
patent: WO-00/48715 (2000-08-01), None
patent: WO-01/51181 (2001-07-01), None
patent: WO-02/087733 (2002-11-01), None
patent: WO-03/084646 (2003-10-01), None
patent: WO-03/105998 (2003-12-01), None

Affiliated with

Also associated with

Rating

Method for reducing the nitrogen oxide concentration in gases 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 for reducing the nitrogen oxide concentration in gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reducing the nitrogen oxide concentration in gases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4236108