Richard James Walter

US Patent:

6406613, Jun 18, 2002

Filed:

Oct 10, 2000

Appl. No.:

09/685359

Inventors:

Nicholas Charles Nahas - Chatham NJ
Dean Clise Draemel - Kingwood TX
Richard Edwards Walter - Long Valley NJ
Michael Siskin - Randolph NJ
Glen Edward Phillips - Goldvein VA

Assignee:

ExxonMobil Research and Engineering Co. - Annandale NJ

International Classification:

C10G 916

US Classification:

208 48R, 208 48 Q, 208 48 AA, 585950

Abstract:

A method for mitigating the condensation of liquid hydrocarbons and subsequent coke deposition in refinery reactor units by dew point suppression.

US Patent:

6776607, Aug 17, 2004

Filed:

Jun 26, 2001

Appl. No.:

09/892382

Inventors:

Nicholas C. Nahas - Chatham NJ
Richard E. Walter - Long Valley NJ
Dean C. Draemel - Kingwood TX
Bruce J. Artuso - Chester NJ

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

F23J 1500

US Classification:

431 5, 502 41, 502 42, 502 55

Abstract:

The invention relates to a process and apparatus for controlling afterburning in the regenerator of a FCC unit. The process and apparatus inject steam into the dilute phase within a regenerator to promote combustion of carbon monoxide before it enters the regenerator cyclones, plenum, or flue gas transfer lines.

US Patent:

7214636, May 8, 2007

Filed:

Aug 22, 2003

Appl. No.:

10/646240

Inventors:

Richard E. Walter - Long Valley NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B01J 20/34

US Classification:

502 38

Abstract:

The present invention is directed to a swaged catalyst regenerator and processes for using the catalyst regenerator. In one embodiment, the swaged catalyst regenerator includes a regeneration zone having a first major diameter and into which a regeneration medium and an at least partially coked catalyst from a reactor can be fed. The catalyst regenerator also includes a separation zone having a second major diameter. The separation zone is provided to separate entrained catalyst from gaseous components, e. g. , combustion products of a regeneration process, and return the entrained catalyst to the regeneration zone. The ratio of the second major diameter to the first major diameter is at least 1. 1, 1. 4, 1. 7, 2. 0, 2. 3, 2. 6 or 2. 9. By providing a catalyst regenerator having these characteristics, desirable regeneration characteristics that minimize entrained catalyst loss can be achieved.

US Patent:

7462211, Dec 9, 2008

Filed:

Aug 18, 2005

Appl. No.:

11/206891

Inventors:

Richard E. Walter - Long Valley NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B01D 45/12

US Classification:

55343, 55345, 55349, 553851, 422147, 422187, 208113

Abstract:

A multi-stage gas-solids separator having at least 4 stages is configured so that the penultimate stage of separators is operated in an underflow condition. The underflow from the penultimate stage is used as the input flow for the final stage of separators. The multi-stage separator is preferably composed of cyclone separators, with the final two stages of separators housed in external disengaging vessels.

US Patent:

20040142813, Jul 22, 2004

Filed:

Jan 9, 2004

Appl. No.:

10/755127

Inventors:

Nicholas Nahas - Chatham NJ, US
Richard Walter - Long Valley NJ, US
Dean Draemel - Kingwood TX, US
Bruce Artuso - Chester NJ, US

International Classification:

B01J038/12

US Classification:

502/042000

Abstract:

The invention relates to a process and apparatus for controlling afterburning in the regenerator of a FCC unit. The process and apparatus inject steam into the dilute phase within a regenerator to promote combustion of carbon monoxide before it enters the regenerator cyclones, plenum, or flue gas transfer lines.

US Patent:

52071073, May 4, 1993

Filed:

Jun 20, 1991

Appl. No.:

7/718477

Inventors:

Henry A. Wolf - Franklin Lakes NJ
Richard E. Walter - Long Valley NJ
Linda Hofmann - Baton Rouge LA
George D. Cody - Princeton NJ
Gerald V. Storch - Bridgewater NJ

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

G01F 174

US Classification:

7386104

Abstract:

A method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of an accelerometer in close proximity to the restriction orifice controlling the gas flow, or determining the Power Spectral Density from the output of a pressure transducer in contact with the gas flow on the down stream side of the restriction orifice. The liquid flow can then be obtained from a predetermined correlation between the RMS Vibrational Signal and the mass or liquid flow rate.

US Patent:

20180264424, Sep 20, 2018

Filed:

Sep 28, 2016

Appl. No.:

15/761557

Inventors:

- Midland MI, US
Don F. Shaw - Denville NJ, US
Richard E. Walter - Long Valley NJ, US
Madhusudhan Kodam - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

B01J 8/24
C10G 11/18
B01J 38/30

Abstract:

A catalyst regenerator for combusting carbonaceous deposits from a catalyst comprising a first chamber which comprises a catalyst inlet for feeding spent catalyst with carbonaceous deposits to said first chamber, a supplemental fuel gas distributor, and a distributor for an oxygen containing gas for distributing oxygen containing gas into said first chamber to contact said spent catalyst and combust carbonaceous deposits and supplemental fuel which further deactivates the spent catalyst and generates flue gas; a riser section extending from said first chamber for transporting the spent catalyst and the flue gas, the riser section comprising an outer wall, at least one slot in the outer wall, and a riser termination device which comprises a substantially internally flat cover plate, at least one arm extending from the cover plate, wherein the arm extends about the slot from the outer wall, the arm comprising an outer shell that encloses the arm and wherein no internal portion of the cover plate extends above an upper surface of the outer shell of the at least one arm is provided. Further provided is a riser termination device.

US Patent:

20170087528, Mar 30, 2017

Filed:

Sep 29, 2015

Appl. No.:

14/868507

Inventors:

- Midland MI, US
Richard E. Walter - Long Valley NJ, US
Don F. Shaw - Denville NJ, US
Fermin A. Sandoval - Houston TX, US
Liwei Li - Freeport TX, US

International Classification:

B01J 7/00
B01J 38/02

Abstract:

A fluidized fuel gas combustor system for a catalytic dehydrogenation process comprising a vessel having a lower portion and an upper portion; a plurality of air injection diffusers located in the lower portion of the vessel; a plurality of fuel gas injection diffusers located on fuel gas distributors disposed in the vessel and spaced apart from and above a plurality of air injection diffusers, wherein the fuel gas diffusers are placed in a manner to maximize even mass distribution of a fuel gas injected through the fuel gas diffusers in the vessel, wherein each fuel distributor comprises a tube having a plurality of fuel gas injection diffusers, one or more optional grid assemblies disposed in the vessel spaced apart from and above the plurality of air injection diffusers and paced apart from and below the fuel gas distributors to maximize even air mass distribution; and one or more grid assemblies disposed in the vessel spaced above the fuel gas distributors is provided.