Electrochemical sensor and process for assessing hydrogen permea

Details Electrochemical sensor and process for assessing hydrogen permea Electrochemical sensor and process for assessing hydrogen permea

1996-03-14

1999-01-12

Tung, T.

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For corrosion

204400, 2057905, G01N 2726

Patent

active

058582045

ABSTRACT:
An electrochemical sensor designed to be employed in equipment of petrochemical plants made of an electrochemical cell without polarization which includes an outer tube or first electrode and an internal rod or second electrode. Both first and second electrodes being provided with wires for external electrical contact. The first and second electrodes being separated by a standard electrolytic solution for the oxidation of the nascent hydrogen which is generated by the corrosion reactions caused by sulfur compounds in contact with the hydrogen-permeable metal which constitutes the equipment of petrochemical plants. The sensor is coupled to a zero resistance ammeter which assesses the electrical current generated by the oxidation of the nascent hydrogen and provides a plot of electrochemical noise.

REFERENCES:
patent: 2886497 (1959-05-01), Butler
patent: 3629090 (1971-12-01), Ghormley
patent: 3798755 (1974-03-01), Sandstrom
patent: 4065373 (1977-12-01), Martin et al.
Corrosion 84, Paper No. 237, "Corrosion Monitoring with Hydrogen Probes in the Oil Field" by William H. Thomason, 13 pages.
Corrosion 91, Paper No. 444, "Electrochemical Noise for Detection of Susceptibility to Stress Corrosion Cracking" by E.A. Eden, et al., 13 pages.

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