The issue of raw material freezing point
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If the analysis of the catalytic raw material shows a high freezing point, does that mean this raw material is paraffin-based?
Generally, a low freezing point of the catalytic feed oil indicates a high content of light components in the oil, while a high freezing point suggests a high content of heavy components. However, there are many cases where crude oil has a low freezing point yet a not-high distillate yield at 300°C. The characteristic factor is a composite constant derived from the combination of relative density and boiling point, and is often used to determine the chemical composition of crude oil. The characteristic factors of various hydrocarbons differ. Alkanes are the highest, naphthenes are next, and aromatics are the lowest. For catalytic cracking feedstocks, this indicates the level of paraffin content: a high K value means a high paraffin content, while a low K value indicates a low paraffin content ； The average values are 13 for alkanes, 11.5 for cycloalkanes, and 10.5 for aromatics.
So you mean that a high freezing point of the catalytic raw material indicates that it is heavy?