Corrosion Control Mechanisms and the Effect of pH on Corrosion in the Crude Oil Refining Process

The consequences of corrosion in the crude oil refining process cannot be ignored due to damage caused by equipment, and serious losses that result from that. Therefore, this research, methods controlling occurrence unit Najaf refinery for four types - API (28, 28.2, 29.2, 30.2) were studied. Chemicals added different quantities before during atmospheric distillation unit, where it was found these chemicals have ability make a media within limits pH 5.5 6.5, became little or no. Also, an anti-corrosion chemical added, which reduced incidence overhead systems equipment. In addition treating using desalter it, mud dirt large proportion salts emulsified water removed oil. best results obtained (6, 6, 5.7, 5.5) percentage iron ions Fe+2 ( 0.8, 1, 1.5, 2.1) refined at pump dosages inhibitor (2.5, 2, 3.5 3.5), caustic soda (4, 8, 8) neutralizer (2, 2.5, 3, 3). This practical study showed importance adding quantities, as well electrical thermal treatment preventing equipment unit.