Apparatus and method for producing a gas having a controlled wat

Details Apparatus and method for producing a gas having a controlled wat Apparatus and method for producing a gas having a controlled wat

1981-12-23

1983-05-31

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55270, 55259, 55387, 55267, 73 23, 73 1G, B01D 4700

Patent

active

043859100

ABSTRACT:
An apparatus (10) and method for producing a gas having a controlled water vapor content is disclosed. Present methods of adding varying amounts of water to a gas containing nitric oxide may undesirably alter the composition of the gas.
The present invention solves the above problem by providing an apparatus (10) and method for substantially fully saturating an unconditioned gas, subsequently removing water from a preselected portion of the saturated gas, and then mixing the preselected dry and saturated portions of the gas.
The present invention is particularly useful in calibrating exhaust emission analyzers.

REFERENCES:
patent: 1819643 (1931-08-01), Fleisher
patent: 3735558 (1973-05-01), Skarstrom et al.
patent: 3756069 (1973-09-01), Carswell et al.
patent: 3894419 (1975-07-01), Mator et al.
patent: 3895915 (1975-07-01), Haldeman
patent: 3976450 (1976-08-01), Marcote et al.
patent: 4049402 (1977-09-01), Fortson
patent: 4191541 (1980-03-01), Jenkins
patent: 4269057 (1981-05-01), Ong et al.
Chemiluminescent Measurement of Nitric Oxide in Combustion Products, by Blair A. Folsom and Craig W. Courtney, Feb. 1979 at Proceeding of the Third Stationary Source Combustion Symposium; vol. II, Advanced Processes and Special Topics; EPA, Office of Research and Development.

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