Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1983-03-01
1984-11-27
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204428, 204433, G01N 2746
Patent
active
044850026
ABSTRACT:
A process and apparatus for the determination of the activity of carbon in furnace atmospheres involves the measuring of the ratio of the partial pressure of oxygen in the furnace gas with respect to a reference gas with the aid of an electric potential furnished by oxygen ion conducting solid state cells. The reference gas comprises the furnace gas brought into a Boudouard equilibrium at the furnace temperature. The exchange takes place in a comparison chamber with a time constant 1/10 of that of the furnace. Thus, the activity of carbon may be calculated or calibrated by a formula which includes the electric potential furnished by the solid cells and the absolute temperature, but which does not include the CO content or the pressure. The process may thus be operated without regard for the CO content in the furnace atmosphere.
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patent: 4043890 (1977-08-01), Isaacs et al.
patent: 4088543 (1978-05-01), Ruka
patent: 4186072 (1980-01-01), Blumenthal et al.
patent: 4277322 (1981-07-01), Kane
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