Why is the vaporization rate lower as the content of ethane, propane, butane, etc. in LNG increases?
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Why is the vaporization rate lower as the content of ethane, propane, butane, etc. in LNG increases?
LNG (Liquefied Natural Gas) is primarily composed of methane, with small amounts of heavier hydrocarbons such as ethane, propane, and butane. These heavier hydrocarbons have higher boiling points than methane, so they are more difficult to evaporate into a gas under the same conditions. As the contents of ethane, propane, butane, etc. in LNG increase, the proportion of these high-boiling-point components in the liquid rises, which raises the overall boiling point of LNG and slows down the gasification process; as a result, the gasification rate decreases. .
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This post was last edited by qqgd on 2024-7-26 at 10:52: The lightness of liquefied petroleum gas. As the carbon count increases, the molecular weight rises as well, and the phase transition heat required for the molecule to change from a liquid to a gas state also increases. This results in an increase in the vaporization temperature and a decrease in the saturated vapor pressure. And when these liquid mixtures of hydrocarbons evaporate, it’s somewhat similar to the effect of distillation
The more heavy components there are, the higher the boiling point, and the less likely it is to vaporize