What are the laboratory testing methods for salt content in vacuum residue?

The conductivity method is commonly used in laboratory tests to determine the salt content in vacuum residue. This method is based on the principle that salt conducts electricity when it dissolves in water. In addition to the conductivity method, titration or chemical analysis methods such as ion chromatography can also be used to determine the content of specific salts. If conditions permit, X-ray fluorescence spectroscopy (XRF) can also be used for analysis. However, the specific method must take into account the characteristics of the sample and the experimental conditions. .

This post was last edited by qugd on 2024-1-12 at 09:33. An analysis method similar to that used for crude oil salt content can be employed; however, due to the high viscosity and freezing point of vacuum residue, the sample must first be appropriately diluted with kerosene fractions in order to ensure the fluidity of the vacuum residue and improve the efficiency of extracting salts from the oil. For some experimental conditions, it may be necessary for the experimenter to conduct some trial experiments in order to determine the most suitable extraction conditions, such as temperature, the ratio of sample to extractant, mixing time, and mixing intensity. By using other analysis methods, you may need to test more and a wider range of experimental conditions, and it is also necessary to determine whether the results obtained from these methods will be recognized professionally by peers.

It seems you have no understanding at all of the determination of salt content in oils, particularly in crude oil and heavy oils.