Enhanced NGL recovery process selected for Neptune gas plant expansion

Enterprise Products Operating LP and partner Marathon Oil Co. conducted a study for the design and construction of a second 300 MMcfd NGL-recovery train at the Neptune plant in St. Mary Parish, La. The companies selected IPSI LLC's Enhanced NGL-Recovery Process after comparing available NGL recovery technologies for the new train.IPSI's technology replaces conventional propane refrigeration with a self-refrigeration and stripping gas package that allows up to 20% more processing capacity with the same residue-gas compression horsepower as in the existing train. A novel demethanizer reflux design was also incorporated into the unit.The two enhancements should allow ethane recoverie...

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