Natural gas liquids recovery process
AssigneeSaudi Arabian Oil Company
InventorsAyman M. Mohammad, Diki Andrian, Yaqoub Y. Al-Kalaf
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Abstract
Methods and systems for operating and NGL recovery process are provided. In an exemplary method, an absorber column upstream of a fractionator column is operated at a higher pressure than a pressure in the fractionator column. An NGL (C3 plus) stream is taken from the bottom of a fractionator column and then ethylene/ethane stream is taken from the top of the fractionator column. A differential pressure between the absorber column and the fraction are column is controlled based, at least in part, on a flow rate of the fractionator feed stream from the absorber column to the fractionator column.
Claims17
Method for operating a natural gas liquids (NGL) plant, comprising:
- operating an absorber column upstream of a fractionator column at a higher pressure than a pressure in the fractionator column;
- taking an NGL (C3+) stream from a bottom of the fractionator column and an ethane/ethylene stream from a top of the fractionator column;
- and
- controlling a differential pressure between the absorber column and the fractionator column based, at least in part, on a flow rate of a fractionator feed stream from the absorber column to the fractionator column.
Dependencies are inferred from the claim text.