Sharing of experience in gasoline blending

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This post aims to cover various experiences and details related to gasoline blending in separate sections on technology and management, serving as a starting point for further discussion. I hope more people will participate in the conversations, learn from one another, and make progress together. Basic indicators in the technical section: There are roughly over twenty indicators related to gasoline blending, and the various provincial companies of the three major oil companies have their own specific requirements, especially regarding prohibited substances and silicon. Among them: density, sulfur, chlorine, benzene (volume fraction), oxygen content, methanol content, olefins (volume fraction), aromatics (volume fraction), gums, manganese, iron, lead, etc., are all linear, that is, based on weighted averages. (It is recommended to read GB17930-2016 in detail here.) Special indicators: (1) Vapor pressure – (the volume fraction of each component * the vapor pressure of that component raised to the power of 1.25, with the sum then raised to the power of 1.25). There are two other methods for calculating vapor pressure; they are not discussed here due to space constraints. Those who need this information should send an email. (2) Octane number (volume fraction of each component * sum of octane numbers + empirical value for the blending effect). There are several other methods for calculating the octane number; due to space constraints, they are not discussed here. Those who need this information should send an email. (3) For doctors, water-soluble acids or bases, and cases where copper sheet corrosion prevents passage, it is necessary to dilute them in proportion and then check. (4) If the induction period for a certain raw material is less than 480 minutes, or if the requirement is 600 minutes, it is necessary to examine the results of the samples; if those results are unsatisfactory, antioxidants must be added in proportion.