Christopher M Ott

US Patent:

6560989, May 13, 2003

Filed:

Jun 7, 2002

Appl. No.:

10/165654

Inventors:

Mark Julian Roberts - Kempton PA
Christopher Francis Harris - Old Zionsville PA
Christopher Michael Ott - Barto PA
Howard Charles Rowles - Center Valley PA
Daniel Lewis Longhurst - Morden, GB
Brian Alfred McNeil - Hook, GB

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 300

US Classification:

62623, 62912, 62932

Abstract:

A method for the recovery of hydrogen and one or more hydrocarbons having one or more carbon atoms from a feed gas containing hydrogen and the one or more hydrocarbons, which process comprises cooling and partially condensing the feed gas to provide a partially condensed feed; separating the partially condensed feed to provide a first liquid stream enriched in the one or more hydrocarbons and a first vapor stream enriched in hydrogen; further cooling and partially condensing the first vapor stream to provide an intermediate two-phase stream; and separating the intermediate two-phase stream to yield a further-enriched hydrogen stream and a hydrogen-depleted residual hydrocarbon stream. Some or all of the cooling is provided by indirect heat exchange with cold gas refrigerant generated in a closed-loop gas expander refrigeration cycle.

US Patent:

20100147024, Jun 17, 2010

Filed:

Dec 12, 2008

Appl. No.:

12/333500

Inventors:

Mark Julian Roberts - Kempton PA, US
Christopher Michael Ott - Allentown PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 1/00

US Classification:

62612

Abstract:

A natural gas liquefaction system, the system comprising a first precooling refrigeration system that accepts at least a natural gas feed stream, a second precooling refrigeration system that accepts at least a first refrigerant stream; and a cryogenic heat exchanger fluidly connected to the first precooling refrigeration system and the second precooling refrigeration system that accepts the natural gas feed stream from the first precooling refrigeration system and the first refrigerant stream from the second precooling refrigeration system to liquefy the natural gas feed stream, where the second precooling refrigeration system accepts only stream(s) having a composition different from the stream(s) accepted by the first precooling refrigeration system.

US Patent:

20190346203, Nov 14, 2019

Filed:

May 11, 2018

Appl. No.:

15/977535

Inventors:

- Allentown PA, US
Christopher Michael Ott - Macungie PA, US
Annemarie Ott Weist - Macungie PA, US
Mark Julian Roberts - Kempton PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 3/02

Abstract:

Described herein are methods and systems for the liquefaction of natural gas to produce a LNG product. The methods and systems use an apparatus for separating a flash gas from a liquefied natural gas (LNG) stream to produce a LNG product and recovering refrigeration from the flash gas. The apparatus includes a shell casing enclosing a heat exchange zone comprising a coil wound heat exchanger, and a separation zone. The heat exchange zone is located above and in fluid communication with the separation zone. Flash gas is separated from the LNG product in the separation zone and flows upwards from the separation zone into the heat exchange zone where refrigeration is recovered from the separated flash gas.

US Patent:

20180023889, Jan 25, 2018

Filed:

Jul 21, 2016

Appl. No.:

15/216318

Inventors:

- Allentown PA, US
Mark Julian Roberts - Kempton PA, US
Christopher Michael Ott - Macungie PA, US
Annemarie Ott Weist - Macungie PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 3/02
F25J 1/00

Abstract:

A system and method for integrated heavy hydrocarbon removal in a liquefaction system having a lean natural gas source. An economizer located between a main cryogenic heat exchanger and a reflux drum is provided to cool an overhead vapor stream against a partially condensed stream. In addition, pressure of the natural gas feed stream is maintained into a scrub column. A pressure drop is provided by a valve located between the economizer and the reflux drum on a partially condensed stream withdrawn from the cold end of the warm section of the main cryogenic heat exchanger.

US Patent:

20150308736, Oct 29, 2015

Filed:

Apr 24, 2014

Appl. No.:

14/260643

Inventors:

- Allentown PA, US
Yang Liu - Allentown PA, US
Gowri Krishnamurthy - Allentown PA, US
Christopher Michael Ott - Laurys Station PA, US
Mark Julian Roberts - Kempton PA, US

Assignee:

AIR PRODUCTS AND CHEMICALS, INC. - Allentown PA

International Classification:

F25J 3/02

Abstract:

A method and apparatus for liquefying a natural gas feed stream and removing nitrogen therefrom to produce a nitrogen-depleted LNG product, in which a natural gas feed stream is passed through main heat exchanger to produce a first LNG stream, which is separated to form a nitrogen-depleted LNG product and a recycle stream composed of nitrogen-enriched natural gas vapor, and in which the recycle stream is passed through main heat exchanger to produce a first LNG stream, separately from and in parallel with the natural gas feed stream, to produce a first at least partially liquefied nitrogen-enriched natural gas stream that is separated to provide a nitrogen-rich vapor product.

US Patent:

20150308737, Oct 29, 2015

Filed:

Apr 24, 2014

Appl. No.:

14/260678

Inventors:

- Allentown PA, US
Yang Liu - Allentown PA, US
Gowri Krishnamurthy - Lansdale PA, US
Christopher Michael Ott - Laurys Station PA, US
Mark Julian Roberts - Kempton PA, US

Assignee:

AIR PRODUCTS AND CHEMICALS, INC. - Allentown PA

International Classification:

F25J 3/02

Abstract:

A method and apparatus for liquefying a natural gas feed stream and removing nitrogen therefrom to produce a nitrogen-depleted LNG product, in which a natural gas feed stream is fed into the warm end of a main heat exchanger, cooled and at least partially liquefied, withdrawn from an intermediate location of the main heat exchanger and separated to form a nitrogen-enriched natural gas vapor stream and a nitrogen-depleted natural gas liquid stream, the liquid and vapor streams being reintroduced into an intermediate location of the main heat exchanger and further cooled in parallel to form a first LNG stream and a first at least partially liquefied nitrogen-enriched natural gas stream, respectively.