Felix A Fernandez

US Patent:

20080115508, May 22, 2008

Filed:

Nov 1, 2007

Appl. No.:

11/933886

Inventors:

Heinz J. Kotzot - Woodlands TX, US
Felix J. Fernandez de la Vega - Houston TX, US
Joseph H. Cho - Katy TX, US
Charles Durr - Houston TX, US
Robert Burlingame - Houston TX, US

International Classification:

F17C 9/00
F22B 1/16
F28D 15/00

US Classification:

62 502, 122 311, 16510411

Abstract:

Systems and methods for heating a cryogenic fluid are provided. A cryogenic fluid can be heated to provide a partially cryogenic vaporized fluid having a first temperature. The partially vaporized cryogenic fluid can be partially vaporized to provide a second partially vaporized fluid having a second temperature. At least a portion of the second, partially vaporized, cryogenic fluid can be used to heat the cryogenic fluid to the first temperature. The second, partially vaporized, cryogenic fluid can be partially vaporized to provide a substantially vaporized cryogenic fluid having a third temperature.

US Patent:

20080202161, Aug 28, 2008

Filed:

Dec 3, 2007

Appl. No.:

11/949118

Inventors:

Joseph H. Cho - Katy TX, US
Heinz Kotzot - The Woodlands TX, US
Felix J. Fernandez De La Vega - Houston TX, US
Charles Durr - Houston TX, US
Robert Burlingame - Houston TX, US

International Classification:

F25J 3/06

US Classification:

62620

Abstract:

Systems and methods for adjusting the heating value of liquefied natural gas (“LNG”) are provided. LNG can be apportioned into at least two portions. A first portion can be warmed to provide a vapor-liquid mixture which can be separated in a first separator to provide a first vapor and a first liquid. The first liquid can be separated to provide ANGL and a second vapor. The first vapor can be compressed and mixed with the second vapor to provide a first effluent. At least a portion of the first effluent can be used to heat the first portion. At least a portion of the first effluent can be used as a first reflux in the first separator. At least a portion of the first effluent can be mixed with a second portion of the LNG to provide an adjusted LNG.

US Patent:

20080264492, Oct 30, 2008

Filed:

Dec 28, 2006

Appl. No.:

11/646875

Inventors:

Hyun Cho - Katy TX, US
Felix J. Fernandez de la Vega - Houston TX, US

International Classification:

B23P 17/00

US Classification:

137 14

Abstract:

A method for pressurizing vapor from a liquefied gas is provided. At least a portion of a storage tank overhead vapor stream can flow to an eductor and at least a portion of a hydrocarbon liquid stream can flow to the eductor. The hydrocarbon liquid stream can have a higher pressure than the vapor stream. The vapor stream and the hydrocarbon liquid stream can be combined within the eductor to provide a mixed stream. The mixed stream can be pressurized within the eductor.

US Patent:

55050492, Apr 9, 1996

Filed:

May 9, 1995

Appl. No.:

8/437623

Inventors:

David A. Coyle - Houston TX
Felix J. Fernandez de la Vega - Houston TX
Charles A. Durr - Houston TX
Ashutosh Rastogi - New Delhi, IN

Assignee:

The M. W. Kellogg Company - Houston TX

International Classification:

F25J 300

US Classification:

62 11

Abstract:

A process for removing nitrogen from liquefied natural gas (LNG) using an enhanced surface, reflux heat exchanger is disclosed. A relatively warm high pressure LNG stream is directed countercurrently in heat exchange with a cool low pressure LNG stream to chill the high pressure stream and partially vaporize the low pressure LNG stream in the reflux heat exchanger. Vapor produced thereby strips the low pressure LNG stream of nitrogen. The cool low pressure LNG stream is produced by expansion of the chilled high pressure LNG stream. Vapor produced by the expansion is combined with the vapor produced in the exchanger and withdrawn overhead. Product LNG which is lean in nitrogen is withdrawn from the bottom of the exchanger.

US Patent:

56591098, Aug 19, 1997

Filed:

Jun 4, 1996

Appl. No.:

8/657508

Inventors:

Felix J. Fernandez de la Vega - Houston TX
Charles A. Durr - Houston TX

Assignee:

The M. W. Kellogg Company - Houston TX

International Classification:

C07C 710
C10G 1700

US Classification:

585834

Abstract:

A process for liquefying natural gas containing mercaptans. Mercaptans are concentrated into a distillate stream by distilling the feed gas stream without specific pretreatment for mercaptans removal. Thus, the mercaptans removal equipment is much smaller since mercaptans treatment can take place at a point in the process where the flowrate is much lower. A portion of the treated distillate stream can be reinjected to the upstream distilling stage to facilitate mercaptan absorption.