Can the initial boiling point of regular gasoline be controlled through operations?
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The initial boiling point is too low, at 28 degrees. How can I improve? Is there any good way?
Increase the temperature at the top of the initial distillation column slightly, and reduce the pressures at the top of both the initial distillation column and the atmospheric distillation column, so that more gas can be sent out
Reduce the pressure at the top of the tower and increase the temperature after cooling
What is the purpose of making such adjustments?
The simplest method is to reduce the tower pressure. Or pull out a few at most at the beginning.
If there is less reflux and more extraction, the temperature at the top of the tower will be higher
Reduce the top pressure to increase the set temperature
The initial boiling point of atmospheric naphtha is primarily controlled by the temperature after cooling, with the pressure of the gas from the rear part of the atmospheric naphtha system serving as a supplementary control factor.