Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1981-04-03
1984-02-21
Marcus, Michael S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 91, 422240, 436113, 436158, 436159, G01N 3110, G01N 2100
Patent
active
044329393
ABSTRACT:
An ammonia gas analyzer and a sulfuric acid converter utilized in the ammonia gas analyzer in which a sample gas is maintained at a relatively high temperature prior to entering the sulfuric acid converter to thereby prevent acidic sulfuric acid sulfates and/or ammonia sulfates from crystallizing and being deposited on the walls of the device. The ammonia gas analyzer includes gas sampling means, a gas measuring channel connected to the gas sampling means, a comparison gas channel connected parallel to the measuring gas channel with the measuring gas channel including an NH.sub.3 /NO converter for converting NH.sub.3 in a sample gas into NO and means for measuring a concentration of NH.sub.3 on the basis of variations of an amount of NO in the measuring gas channel with respect to that in the comparison gas channel. A first sulfuric acid converter has an inlet connected to the sampling means and an outlet connected to an inlet portion of the comparison gas channel for converting sulfuric acid, sulfate and sulfur trioxide in the sample gas into sulfur dioxide. A second sulfuric acid converter has an inlet connected to the outlet of the NH.sub.3 /NO converter and an outlet connected to an inlet of the measuring means.
REFERENCES:
patent: 3718429 (1973-02-01), Williamson, Jr.
patent: 3853474 (1974-12-01), Austin
patent: 3904371 (1975-09-01), Neti et al.
patent: 3997297 (1976-12-01), Jenkins et al.
patent: 4113434 (1978-04-01), Tanaka et al.
Kaneko Teruo
Saito Yoshio
Tanaka Takeo
Watanabe Atsuo
Fuji Electric & Co., Ltd.
Marcus Michael S.
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