5/9/2023 0 Comments Pure point measure![]() It’s sometimes referred to as “hydrocarbon liquid drop-out”. Hydrocarbon dew point (HCDP) indicates the temperature at which heavy hydrocarbon components begin to condense out of the gaseous phase when the gas is cooled at constant pressure. How is hydrocarbon dew point defined by the industry? So the term ‘natural gas’ describes a gas mixture that contains a wide range of hydrocarbons, from light short chain aliphatics (non-aromatic compounds) to heavy, long chain molecules. The result is a gas mixture with a high proportion of methane, but which still contains varying amounts of ethane, propane, and butane. Further processing removes CO2 and H2S before reduced temperature separation extracts entrained condensates and reduces the concentration of non-methane hydrocarbons such as the natural gas liquids (NGLs) – ethane, propane, butane, iso-butane and natural gasoline. Initial processing dries the gas to remove liquid water and reduce water vapor concentration. As well as methane, other hydrocarbon constituents include ethane (C2H6), propane (C3H8), and butane (C4H10). Undesirable non-hydrocarbon constituents include carbon dioxide, hydrogen sulfide and moisture. Methane is the major component, typically between 60 to 90%, with other components present in different proportions, from high percentages to traces at less than 0.01%. At the point of extraction, natural gas comprises 20 or more individual hydrocarbon and non-hydrocarbon constituents.
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