Changes in the dry point of catalyzed gasoline
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If the top temperature of the fractionation tower is kept constant and the pressure in the fractionation tower is increased, how does the dry point of gasoline change? Please help explain it.
With all other conditions unchanged, considering only the pressure factor, the dry point decreases. Reason: Increased vapor pressure of hydrocarbons leads to a higher boiling point, resulting in a decrease in the distillate at the same temperature
The dry point decreases; the higher the vapor pressure of oil and gas, the higher the temperature required to distill the same oil product, and at the same temperature the dry point tends to decrease.
With all other conditions unchanged, the dry point of gasoline decreases! Because the heavier fractions can’t rise further!
Isn’t it obvious? As the level drops, the higher components won’t increase.