Power technology: Sn-H acid value reflux method and extraction method which is good

The main principle of acid value tester is mainly used to measure the oil production product, indicating that the amount of acidic substance containing acidic substance is one of the standards of the oil quality, and there are two main principles, and there are two main principles. One is the 'reflow method', and one is the 'extraction method', the two principles are the same, but the implementation standard is different, followed by the test efficiency and method, and below we specifically understand. The primary content of the acid value in oleic acid is a certain corrosion, but the corrosion size is related to the content, the milliga of potassium hydroxide in 1 g of oil is referred to as an acid value, the acid value includes organic acid value and Inorganic acid value, in most cases, the oil is free of inorganic acid, and therefore, the oleic acid value actually represents the content of organic acid in the oil, and the main content is a naphthenic acid. The corrosion of the crude oil value and the naphthenic acid is proportional to the crude oil value, and the crude oil is less than 0.5 mgKOH / g, the degree of corrosion is not large, if it is more than 0.5 mgkoh / g, corrosion It will exacerbate, the corrosion rate of carbon steel or alloy steel increases, if the crude oil greater than 2 mgkoh / g is very violent to carbon steel or alloy steel, if there is water in oil, it is more serious. Therefore, it is necessary to measure the acid value. The acid value reflux method is measured and the selection reflux method is to extract the substance by chemical material heating, reflow, and the extraction method is transferred from one solvent to another solvent, a method of extracting, and the reflow method is executed. According to GB / T 7599-1987, the transformer oil and the steam turbine oleic acid value determination method were developed. The acid value extraction method is measured and the selection extraction method does not support this standard, so when we purchase the acid value test, we don't have to consider the principle, the results of the two principles are very different, but the extraction method is compared The return method is very fast. Summary, the two principles can realize the measurement of acid value data, although the process is different, but the results are consistent, if you are a manufacturer, you can use the extraction method, the price is cheap, the test efficiency is high, if it is a test unit or inspection unit , Use reflux method, only the backflow method has third-party test data report. Resource Loaded www.kvakva.cn original works, Please do not reprint! Read more

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