ELECTROCHEMICAL SENSOR AND PROCESS FOR ASSESSING HYDROGEN PERMEATION

摘要

An electrochemical sensor designed to be employed in equipments of petrochemical plants made up of an electrochemical cell without polarization which comprises an outer tube or first electrode and an internal rod or second electrode, both first and second electrodes being provides with wires for external electrica l 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 equipments 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.