Why is it said that the higher the proportion of light fractions in crude oil, the greater the pressure drop in the later sections of the pipeline?
Thread Content
This post was last edited by lyhgchem on 2010-11-3 14:32, as the title indicates. Why is it said that the higher the proportion of light fractions in crude oil, the greater the pressure drop in the later sections of the pipeline? The original text states that if crude oil contains a high amount of light fractions, then after passing through a series of heat exchangers, the temperature rises and these light fractions vaporize, resulting in a significant pressure drop in the pipelines. As a consequence, the outlet pressure of the crude oil pump increases, and the pressure resistance capacity of the heat exchangers also needs to be enhanced.
This post was last edited by lyhgchem on 2010-11-3 at 17:03. Why isn’t there anyone answering? Is this question too simple for you all to bother answering? I’d like to ask everyone for advice! As the light fractions vaporize, shouldn’t the pipeline pressure increase? How can there be a “pressure drop”?
Originally, it was heavy oil, and its flow was mostly laminar; when gasified, the Reynolds number increases, leading to turbulent flow, the formation of more vortices, loss of mechanical energy, increased fluid resistance, boundary layer separation, and a rise in pressure drop.
This post was last edited by lyhgchem on 2012-1-12 at 16:40. I’ve learned it; I still need to keep working hard to learn more. Thank you all