Through the analysis of three-phase separator corrosion types and causes, this paper proposes the deficiency of the anticorrosive technology at this stage, and improves and perfects the three-phase separator impressed current cathodic protection technology. Applying it in three-phase separator body protection is safe and reliable, and has got better protective effect, especially for the obvious effect to prevent the pitting corrosion and grooving corrosion. The protection degree is above 95%;

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... otect area is 100%. The technique has the advantages of less investment, obvious effect, simple operation and convenient management, and has certain popularization value.