Ralph Evans Killen

US Patent:

8211375, Jul 3, 2012

Filed:

Oct 7, 2009

Appl. No.:

12/575334

Inventors:

Krishniah Parimi - Alamo CA, US
Steven X. Song - Albany CA, US
Ralph E. Killen - San Francisco CA, US
Ronald K. Meeker - Clayton CA, US
Steven A. Souers - Ocean Springs MS, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 8/02
B01J 8/00

US Classification:

422220, 422606, 422607, 422224, 261 96, 261 98, 261 76, 261109, 261111

Abstract:

The invention is a fluid distribution device for coupling with a fluid distribution conduit or chimney for improving the distribution of downwardly flowing poly-phase mixture including at least one gas phase and at least one liquid phase, above at least one catalyst bed of granular solid catalytic material. The fluid distribution device for receiving the liquid and gas phases has one or more openings in the top and/or upper portion of its height through which a gas phase can enter and has a gas conduit that opens to a mixing cavity within the device. The fluid distribution device further comprises one or more lateral openings for liquid ingress. The lateral opening or openings allow the liquid to enter a liquid conduit that opens to the internal mixing cavity. The mixing cavity allows intimate contact between the liquid and gas phases. Therefore the flow distribution device of the invention provides improved tolerance for tray out of levelness.

US Patent:

8372354, Feb 12, 2013

Filed:

Jul 19, 2010

Appl. No.:

12/839222

Inventors:

Ralph E. Killen - San Francisco CA, US
Craig Boyak - El Cerrito CA, US
Steven X. Song - Albany CA, US
Abdenour Kemoun - Pleasant Hill CA, US
Steve Souers - Ocean Springs MS, US
Krishniah Parimi - Alamo CA, US
Zackory Akin - Pleasant Hill CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01L 3/02

US Classification:

422501, 422508, 422520, 422521, 422524, 422606, 422607, 422919, 422922, 422924, 422928, 422929, 422551, 7386332, 73864, 7386401, 7386474, 7386487

Abstract:

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

US Patent:

8597595, Dec 3, 2013

Filed:

Nov 27, 2012

Appl. No.:

13/686304

Inventors:

Zackory S. Akin - Pleasant Hill CA, US
Craig R. Boyak - El Cerrito CA, US
Abdenour Kemoun - Pleasant Hill CA, US
Ralph Evan Killen - San Francisco CA, US
Krishniah Parimi - Alamo CA, US
Steven Xuqi Song - Albany CA, US
Steven Alden Souers - Ocean Springs MS, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01L 3/02
B05B 1/14
B05B 7/08

US Classification:

422508, 422501, 422520, 422545, 422546, 422607, 422919, 422924, 7386332, 73864, 7386401, 7386464, 239548, 239549, 239568

Abstract:

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

US Patent:

20120014847, Jan 19, 2012

Filed:

Jul 19, 2010

Appl. No.:

12/839227

Inventors:

Ralph E. Killen - San Francisco CA, US
Craig Boyak - El Cerrito CA, US
Steven X. Song - Albany CA, US
Abdenour Kemoun - Pleasant Hill CA, US
Steve Souers - Ocean Springs MS, US
Krishniah Parimi - Alamo CA, US
Zackory Akin - Pleasant Hill CA, US

International Classification:

B01J 8/02
B05B 1/00

US Classification:

422211, 422129, 222566

Abstract:

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

US Patent:

20130064731, Mar 14, 2013

Filed:

Oct 30, 2012

Appl. No.:

13/663562

Inventors:

Craig Boyak - El Cerrito CA, US
Ralph Evans Killen - San Francisco CA, US

International Classification:

B01J 8/02

US Classification:

422239

Abstract:

The present invention is directed to an upwardly convex fixed-bed catalyst support for a hydroprocessing reactor. The catalyst bed support includes an upwardly convex annular-shaped plate having an outer end in communication with the reactor inner surface, and an inner end in communication with a horizontal hub assembly.

US Patent:

20130064740, Mar 14, 2013

Filed:

Oct 30, 2012

Appl. No.:

13/663570

Inventors:

Craig Boyak - El Cerrito CA, US
Abdenour Kemoun - Pleasant Hill CA, US
Ralph Evans Killen - San Francisco CA, US
Krishniah Parimi - Alamo CA, US
Steven Xuqi Song - Albany CA, US

International Classification:

B01F 3/04
B01J 8/04

US Classification:

422600, 2611142, 261113

Abstract:

The present invention is directed to a vortex-type mixing device for a down-flow hydroprocessing reactor. In particular, the device improves the effectiveness of an existing mixing volume in mixing the gas phase and liquid phase of two-phase systems. According to the present invention, the mixing device helps create a highly arcuate flow to incoming effluents and a high degree of mixing within a constrained interbed space of a hydroprocessing reactor.

US Patent:

20150375188, Dec 31, 2015

Filed:

Sep 4, 2015

Appl. No.:

14/845486

Inventors:

- San Ramon CA, US
Ralph Evans KILLEN - San Francisco CA, US

International Classification:

B01J 8/02

Abstract:

The present invention is directed to an upwardly convex fixed-bed catalyst support for a hydroprocessing reactor. The catalyst bed support includes an upwardly convex annular-shaped plate having an outer end in communication with the reactor inner surface, and an inner end in communication with a horizontal hub assembly.