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Measuring naphthenic acid corrosion potential with the Fe powder test

机译:用铁粉测试测量环烷酸腐蚀潜能

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摘要

Results arc presented of experiments performed using a new method to measure the naphthenic acid corrosion potential. The method consists of adding pure iron powder into a small autoclave containing the crude or oil sample. The test is then performed at a given temperature for one hour, after which the oil sample is filtered and the remaining liquid is sent for iron content determination (ppm). The tests are run at 7 different temperature levels, 3 more arc run as repeated tests. A best-fitted curve is drawn through these 10 experimental points and the maximum point is thus determined. This becomes the main outcome of the test and it is used to give a measure of the naphthenic acid corrosion potential. The same general trends as observed in the past using the neutralization number or TAN (Total Acid Number) is obtained. However, this the v test seems capable of detecting anomalous cases where oil samples having larger values of TAN exhibit less corrosivity than others having much lower values of TAN or whet they show completely different corrosivity despite having similar or the same TAN.
机译:给出了使用新方法测量环烷酸腐蚀电位的实验结果。该方法包括将纯铁粉添加到装有原油或石油样品的小型高压釜中。然后在给定的温度下进行测试一小时,然后过滤油样并将剩余的液体送去测定铁含量(ppm)。测试在7种不同的温度水平下进行,重复测试则多进行了3次电弧测试。通过这10个实验点绘制一条最佳拟合曲线,从而确定最大点。这成为测试的主要结果,并用于测量环烷酸的腐蚀潜能。获得了与过去使用中和值或TAN(总酸值)观察到的相同的总体趋势。但是,此v检验似乎能够检测异常情况,在这些情况下,具有较大TAN值的油品样品显示出比具有较低TAN值的其他油品更低的腐蚀性,或者尽管它们具有相似或相同的TAN,但它们显示出完全不同的腐蚀性。

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