Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Reexamination Certificate
2007-01-09
2007-01-09
Doerrler, William C. (Department: 3744)
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
C062S635000, C062S630000
Reexamination Certificate
active
10803490
ABSTRACT:
A process and apparatus for the recovery of ethane and heavier components from a hydrocarbon feed gas stream. Feed gas stream is cooled and separated into a vapor stream and a condensed stream. Vapor stream is divided into a first and a second gas streams. First gas stream is expanded and sent to a fractionation tower. Second gas stream is supplied to an absorber tower. At least a part of the first liquid stream is cooled and sent to the absorber. Absorber column produces a lean vapor stream and a second condensed stream. Lean vapor stream is cooled and sent to the fractionation tower. Second condensed stream is subcooled and supplied to the fractionation tower. Temperatures and pressures of the streams and columns are maintained to recover a major portion of ethane and heavier hydrocarbon components as bottom product, and produce at the fractionation tower overhead, a residue gas stream.
REFERENCES:
patent: 4171964 (1979-10-01), Campbell
patent: 4278457 (1981-07-01), Campbell et al.
patent: 4322225 (1982-03-01), Bellinger
patent: 4519824 (1985-05-01), Huebel
patent: 4559070 (1985-12-01), Sweet
patent: 5555748 (1996-09-01), Campbell et al.
patent: 5561988 (1996-10-01), Mehra
patent: 5953935 (1999-09-01), Sorensen
patent: 5983664 (1999-11-01), Campbell et al.
patent: 6182469 (2001-02-01), Campbell et al.
patent: 6244070 (2001-06-01), Lee et al.
patent: 6354105 (2002-03-01), Lee et al.
patent: 2001/0052241 (2001-12-01), Jain
patent: 2002/0157538 (2002-10-01), Foglietta et al.
patent: 2003/0014995 (2003-01-01), Bowen et al.
patent: 2004/0148964 (2004-08-01), Patel et al.
patent: 2004/0172967 (2004-09-01), Patel et al.
patent: WO03/095913 (2003-11-01), None
patent: WO2004/065868 (2004-08-01), None
patent: WO2004/076946 (2004-09-01), None
Pitman R N et al; “Next Generation Processes for NGL/LPG Recovery”; Proceedings of the GPA Annual Convention, Tulsa, OK, US, Mar. 16, 1998; pp. 90-97, XP001106009, figs. 1,4.
Foglietta Jorge H.
Patel Sanjiv N.
ABB Lummus Global Inc.
Bracewell & Giuliani LLP
Doerrler William C.
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