https://www.youtube.com/watch?v=-7-UezCAnT8
Contents
Bold Brown: Text box data.
Bold Orange: List box data.
TBP (True boiling point)
TBP is measured as the boiling point of the mixture changes
It is calculated by measuring the temperature at the points 20, 50 and 80% of the distilled volume
TBP analysis is performed to understand the characteristics of crude oil and petroleum mixtures in terms of boiling point distribution
$$ TBP={T20+T50+T80\over 3} $$
ASTM (American Society for testing and materials)
It is calculated by measuring the temperature at the points 10, 50, and 90% of the distilled volume
ASTM D86: Except for heavy fractions crude oil, most of the petroleum fractions are used
ASTM D1660: Used for heavy fraction crude oil
$$ ASTM={T10+2T50+T90\over 4} $$
Topped crude
Crude oil with light hydrocarbons removed
Steam
Used to remove salt from crude oil
Recovered through the upstream condenser of the tower
simulate the atmospheric distillation column to establish the correct operating conditions