Conversion of oxides of nitrogen to nitrogen for pollution abate

Details Conversion of oxides of nitrogen to nitrogen for pollution abate Conversion of oxides of nitrogen to nitrogen for pollution abate

1985-12-23

1987-05-05

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, C01B 2100

Patent

active

046631356

ABSTRACT:
A process for removing oxides of nitrogen from a gas in which the molar ratio of NO to NO.sub.2 is greater than 1. Sufficient NO is oxidized by the reaction NO+2HNO.sub.3 =H.sub.2 O+3NO.sub.2 by a solution whose HNO.sub.3 concentration is maintained above about 20% to form a gas whose molar ratio of NO to NO.sub.2 is close to 1. Substantially equivalent amounts of NO and NO.sub.2 are absorbed by a solution whose pH is maintained below about 2 containing HNO.sub.3 and dissolved NH.sub.3. The absorbed oxides of nitrogen react with the dissolved NH.sub.3 at a temperature above about 50.degree. C. to form elemental nitrogen and water. The process can be carried out in several steps or in substantially one step.

REFERENCES:
patent: 3453071 (1969-07-01), Schmitt et al.
patent: 4397719 (1983-08-01), Yoshida
patent: 4419333 (1983-12-01), Rues et al.
patent: 4427503 (1984-01-01), Heilgeist

Affiliated with

Also associated with

Rating

Conversion of oxides of nitrogen to nitrogen for pollution abate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conversion of oxides of nitrogen to nitrogen for pollution abate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of oxides of nitrogen to nitrogen for pollution abate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398424