Patent Number: 8,794,030

Title: Liquefied natural gas and hydrocarbon gas processing

Abstract: A process for recovering heavier hydrocarbons from a liquefied natural gas (LNG) stream and a hydrocarbon gas stream is disclosed. The LNG stream is heated to vaporize at least part of it, expanded, and supplied to a fractionation column at a first mid-column feed position. The gas stream is expanded, cooled, and supplied to the column at a second mid-column feed position. A distillation vapor stream is withdrawn from the column below the mid-column feed positions and cooled by the LNG stream sufficiently to condense at least a part of it, with at least a portion of the condensed stream directed to the column at an upper mid-column feed position. A portion of the column overhead stream is cooled by the LNG feed stream to condense it and form both a "lean" LNG stream and a reflux stream that is supplied to the column at a top column feed position.

Inventors: Martinez; Tony L. (Odessa, TX), Wilkinson; John D. (Midland, TX), Hudson; Hank M. (Midland, TX), Cuellar; Kyle T. (Katy, TX)

Assignee: Ortloff Engineers, Ltd.

International Classification: F25J 3/00 (20060101)

Expiration Date: 8/05/12018