Unit+6

Unit 6: Fractionating and Liquid Treating - Reading Assignment Read Chapter 9, pages 131-143 from your textbook (Plant Processing of Natural Gas) to learn about fractionation and liquid treating of natural gas. Fractionation is quite similar to the Distillation process so distillation fundamentals are helpful in the discussion of this unit.

Our discussion today will focus on the components and functions of the Fractionation. The design of Fractionation Units allows for the separation of Natural Gas Liquids (NGL's) into products such as ethane, propane, and butane. Natural gas liquids are fed to this unit from a cryogenic unit. Recall from last unit that the cryogenic unit (demethanizer) removed methane from the gas stream.



This [|hydrocarbon] mixture is liquid at ambient pressure and temperature. It is volatile and unstable but can be blended with other hydrocarbons to produce commercial gasoline.
 * Natural gasoline** is a [|natural gas liquid] with a [|vapor pressure] intermediate between [|natural gas condensate] (drip gas) and [|liquefied petroleum gas] and has a [|boiling point] within the range of [|gasoline]. The typical [|gravity] of natural gasoline is around 80 [|API].

[|Natural gas our new gasoline?]

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[|World's Largest Ship]

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LNG Transport ship

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