Why do light and heavy sand produce different residue components?
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The initial boiling point of light sand is generally between 490 and 520, while that of heavy sand ranges from 390 to 470. Why can’t some clear oils be extracted?
This post was last edited by qugd on 2019-7-25 at 11:10. Your question already contains the answer — because of the differences in their composition, Light Sand and Heavy Sand are two different types of crude oil. You may refer to the evaluation data for these two types of crude oil; such data is generally available in large petrochemical research institutions. Furthermore, your residue has already been processed, and the extraction depth achieved in the previous processing steps has a significant impact on the composition of the oil products that result thereafter.