Stephen R York

US Patent:

8097172, Jan 17, 2012

Filed:

Sep 30, 2005

Appl. No.:

11/576326

Inventors:

Muhammad Nazrul Islam - Sugarland TX, US
Stephen D. York - Missouri City TX, US

Assignee:

Aker Kvaerner, Inc. - Houston TX

International Classification:

C02F 1/10
C07C 27/00

US Classification:

210774, 95254, 96155, 96202, 96218, 210175, 210180, 2101951, 210259, 210749, 210805, 210806, 518700, 518705

Abstract:

The present invention provides an apparatus for recovering organic compounds from plant waste water. A saturator () is coupled to a feed gas stream () and a heated makeup water stream () which includes recoverable organic compounds. The saturator provides a saturated feed gas stream () which includes feed gas, steam and recovered organic compounds. A pump () recycles saturator water () and the makeup water stream () is added to that recycle stream ().

US Patent:

8642822, Feb 4, 2014

Filed:

May 27, 2011

Appl. No.:

13/117785

Inventors:

Raymond T. Brickey - Houston TX, US
Greg A. Lisewsky - Seabrook TX, US
John J. Waycuilis - Cypress TX, US
Stephen D. York - Catoosa OK, US

Assignee:

Marathon GTF Technology, Ltd. - Houston TX

International Classification:

C07C 1/00

US Classification:

585408, 585603, 585359, 585642, 585733

Abstract:

A process for converting gaseous alkanes to olefins, higher molecular weight hydrocarbons or mixtures thereof wherein a gaseous feed containing alkanes may be thermally or catalytically reacted with a dry bromine vapor to form alkyl bromides and hydrogen bromide. Poly-brominated alkanes present in the alkyl bromides may be further reacted with methane over a suitable catalyst to form mono-brominated species. The mixture of alkyl bromides and hydrogen bromide may then be reacted over a suitable catalyst at a temperature sufficient to form olefins, higher molecular weight hydrocarbons or mixtures thereof and hydrogen bromide. Various methods and reactions are disclosed to remove the hydrogen bromide from the higher molecular weight hydrocarbons, to generate bromine from the hydrogen bromide for use in the process, to store and subsequently release bromine for use in the process, and to selectively form mono-brominated alkanes in the bromination step. One or more of the reactions of the processes of the present invention may be conducted in a microchannel reactor.

US Patent:

6350928, Feb 26, 2002

Filed:

Dec 30, 1999

Appl. No.:

09/476297

Inventors:

John J. Waycuilis - Cypress TX
Stephen D. York - Missouri City TX

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C07C 900

US Classification:

585 15

Abstract:

A process is provided for converting a multi-phase fluid stream having an initial gas phase and an initial liquid phase to a gas hydrate slurry. The initial liquid phase includes an initial water and the initial gas phase includes a hydrocarbon gas. An inert solid particle medium is entrained in the multi-phase fluid stream to form a fluidizable mixture which is conveyed through the interior of a heat transfer tube enclosed within a shell. A heat transfer medium resides within the shell, but is external to the heat transfer tube in fluid isolation from the fluidizable mixture. The wall of the heat transfer tube provides a heat transfer surface for heat exchange between the multi-phase fluid stream and the heat transfer medium, cooling the multi-phase fluid stream on contact to a temperature below the gas hydrate formation temperature and converting at least a portion of the hydrocarbon gas and initial water to a plurality of solid gas hydrate particles. The solid particle medium substantially prevents accumulation of the solid gas hydrate particles on the tube wall. The fluidizable mixture is separated from the solid particle medium to recover a gas hydrate slurry containing the plurality of solid gas hydrate particles and the remaining portion of the initial liquid phase.