NGL Fractionation | Parker

Finally, the mixed natural gas stream needs to be fractionated into its various constituents; ethane, propane, butane, iso-butane and natural gasoline products.

 

PARKER HANNIFIN PROVIDE

  • Particulate liquid filters on the NGL C2+ (and higher) liquid inlets and outlets of the various fractionators. 
  • Gas coalescers on separated gas fractions before mole sieve dehydrator beds
  • Dry gas filters downstream of the mole sieve dryer beds
Process flow for blue hydrogen carbon capture

NGLs left behind after gas processing must be fractionated (broken) down to their base components to be usable. Fractionation is the process of boiling off the different hydrocarbons one by one, starting with the separating ethane (C2H6), then propane (C3H8) that will both be sent and valued in olefin plants, then butane & isobutane (C4H10) for LPG, and the remaining condensate and C5+ to be sent to refinery processing.

 

In the fractionation process, the liquid enters a column where the temperature is elevated to the boiling point of the lighter fraction, that gas exiting from the top and being cooled down afterwards, dried and filtered before use in a downstream plant, while the rest of the bottom liquids (heavier fraction) go to the next column to undergo the same boiling - gas separation - cooling - drying - filtration step a couple of times until the C2, C3, C4 are separated from the C5+ and condensates.

Upgrade your Midstream Oil & Gas Process to the Next Level

 

Dive deeper into our filtration solutions for midstream applications including:

  • Acid gas removal
  • Gas dehydration - glycol
  • Mercury removal
  • NGL recovery
  • NGL fractionation

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