Nitric oxide analysis and scrubber therefor

Details Nitric oxide analysis and scrubber therefor Nitric oxide analysis and scrubber therefor

1971-03-01

1976-01-27

Hart, Charles N.

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

55387, B01D 3904

Patent

active

039349918

ABSTRACT:
A method of analyzing nitric oxide (NO) in a gas stream containing nitrogen dioxide (NO.sub.2) and a scrubber apparatus for selectively removing nitrogen dioxide from a gas stream containing nitric oxide. The scrubber apparatus comprises a container having an inlet port for the gas stream and an outlet port. The scrubber material in the container includes silver carbonate whereby the scrubber has an efficiency of at least about 99% and a capacity of about 11.5 parts per million hours of 99% nitrogen dioxide removal per gram of silver carbonate. The method involves passing the gas stream through a scrubber material containing silver carbonate so as to remove nitrogen dioxide from the gas stream while passing the nitric oxide unattenuated and thereafter conveying the gas stream from the scrubber material to an analyzer for nitric oxide. The gas stream is analyzed with the analyzer to determine the nitric oxide concentration therein.

REFERENCES:
patent: 2825701 (1958-03-01), Hermann et al.
patent: 3271322 (1966-09-01), Stiles
patent: 3423328 (1969-01-01), Keith et al.
patent: 3498743 (1970-03-01), Kyllonen
patent: 3579305 (1971-05-01), Neti

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