Method and apparatus for removing nitrogen oxides from a gas str

Details Method and apparatus for removing nitrogen oxides from a gas str Method and apparatus for removing nitrogen oxides from a gas str

1975-12-05

1979-04-24

Peters, G. O.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

423235, C01C 118

Patent

active

041512650

ABSTRACT:
A gas stream containing nitrogen oxides, such as the tail gas from a nitric acid plant, is treated to reduce the nitrogen oxides content thereof. The method results in the production of an aqueous solution of ammonium nitrate. In a liquid-gas contact apparatus, the gas stream is reacted, under steady state conditions with an aqueous solution of ammonium nitrate at a pH of about 0.1 to about 3.5. The gas stream can be further reacted with an aqueous solution of ammonium nitrate at a pH of about 7.5 to about 8.5; and thereafter with water, preferably slightly acidified. The resulting gas stream of reduced nitrogen oxides content may be safely discharged to the atmosphere without causing air pollution, the nitrogen oxides content being below imposed standards.

REFERENCES:
patent: 2102136 (1937-12-01), Shapleigh
patent: 3453071 (1969-07-01), Schmitt et al.
patent: 3579298 (1971-05-01), O'Brien et al.

Affiliated with

Also associated with

Rating

Method and apparatus for removing nitrogen oxides from a gas str 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 removing nitrogen oxides from a gas str, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for removing nitrogen oxides from a gas str will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1991598