How does the density of oils change as the boiling range increases?
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Generally, as the boiling range of an oil fraction increases, its density gradually increases. However, in the experiments I conducted recently, it was observed that as the boiling range of the fractions increased, the density first increased and then decreased. I’m asking my friends: has anyone encountered this situation? Is this state reasonable, and how can it be explained? I am extremely grateful. (Avoiding experimental errors: I conducted multiple sets of parallel experiments, and the consistency was excellent.)
Is it caused by a corresponding decomposition reaction? Such phenomena can occur in the recombined components at certain temperatures. Previous thermal cracking reactions utilized high temperatures to cause the cracking of heavy oil products!
Thank you for your answer. But why don’t ordinary crude oils exhibit such problems in terms of their properties (as demonstrated by numerous studies)? Also, is there a approximate temperature range within which decomposition reactions occur?
Could you be more specific about what kind of oil it is? ?
Can this happen with catalytic cracking slurry?