The Corrosion Resulted From The Chlorine Ion And Protection Of The Crude Oil Bottom Plate

The corrosion of the crude oil bottom plate is always one of the important questions of the petrochemical and undertaes our's petrochemical. The crude oil have no very strong corrosivity, but the mainly question is the moisture flowing from the crude oil and the corrosivity impurities mixxing up in the crude oil,the moisture sinking and the oil floating , the sedimentation in the bottom of oil pot through long-term aqua.The underwater component of sedimentation is complicated, still containing various microorganism.This thesis launches the mechanism of corrosion in the crude oil bottom plate Systematically and completely, in a specific way and as follows:Adoptting the electrochemistry test system studies the chlorine ion, temperature, the PH number to keep the impact of the crude oil tank bottom plate polarize behavior to the crude oil.As a result express that the crude oil keeps the crude oil bottom plate to be placed in the activity fusion status in the sedimentation aqua;existing of The chlorine ionic not only will accelerate the anode fusion that the crude oil keeps the crude oil bottom plate, but also affect negative behavior that the crude oil keeps the crude oil bottom plate;IN Neuter gender, alkaline medium Central, The crude oil oil keeps the corrosion anti of the crude oil bottom plate , but the medium acidity and temperatures go up to all decay accelerate.In the research of the mechanism, analysing the xamination and reason to the corrosion occasion of three crude oils tank bottom plate.The crude oil keeps the crude oil bottom plate corrosion facial look mainly is the pitting corrosion sum to ulcerate the corrosion, among them, the pitting corrosion is to be result in by the underwater chlorine ion of the sedimentation of tank bottom of, but ulcerate the corrosion from the dirt of the crude oil sludge formulating down the corrosion result in.On the base of the mechanism studing, to various protection project progress compare that the base oil keep the canister bottom and can assume, think the beaded paint+ the sacrificial anode unites to protect quite the cheese, and a pair of scrolls coincidence protection in the select of the beaded paint carried on the further research, the usage that discovers to lead the electrostatic beaded paint will accelerate the fusion of the sacrificial anode, the impact protection efficiency, according to the base oil keep the canister bottom the section of special environment, immerse in the sedimentation aqua over a long period of time, so can consider to adopt the insulatedbeaded paint, can spare the dosage of the sacrificial anode thus, and acquire the good protection substitution.