Oil and gas partial pressure problem
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What is the definition of oil and gas partial pressure? What impact does it have on product quality?
Are you talking about vapor pressure? There are requirements for gasoline, which should not be greater than 74Kpa.
The partial pressure of oil and gas is the pressure generated by only the oil and gas part. Since it is called partial pressure, there are other components that generate pressure. The impact on the quality of each product is different. For the top of the fractionation tower, the total pressure at the top of the tower = partial pressure of oil and gas + partial pressure of water vapor (ignoring other components). If the partial pressure of oil and gas is high, the dry point of gasoline will decrease. But maybe the total pressure at the top of the tower has not changed because the partial pressure of water is lower.
It's the law of partial pressure based on chemical engineering principles. Each component has its own partial pressure in the total vapor pressure, and the partial pressure is related to the composition of the liquid.
The partial pressure of oil and gas refers to the pressure occupied by oil and gas in the mixed gas. An increase in the partial pressure of oil and gas is equivalent to an increase in the pressure of the environment. A decrease in the partial pressure of oil and gas is equivalent to decompression.
An old man named Dalton once said a law of partial pressure. In any gas mixture in a container, if no chemical reaction occurs between the components, each gas will be evenly distributed throughout the container, and the pressure it generates will be the same as the pressure it would produce if it occupied the entire container alone. The partial pressure of oil and gas means the pressure of the oil and gas part of the pressure system of the entire container. The partial pressure of oil and gas decreases and the dry point increases.
Why does the dry point of gasoline decrease when the partial pressure of oil and gas increases?
The heavier part of the gasoline component comes up less, so it decreases.
So when the partial pressure of oil and gas increases, why does the dry point of gasoline decrease?