Ka Leung Lok

US Patent:

20100155020, Jun 24, 2010

Filed:

Dec 23, 2008

Appl. No.:

12/342790

Inventors:

Ka Lok - Buffalo Grove IL, US
Christopher Naunheimer - Arlington Heights IL, US
Matthew Zuraski - Schaumburg IL, US

International Classification:

F25B 29/00
F27B 15/16

US Classification:

165 64, 422144

Abstract:

Systems and processes for providing a blended cooling air stream to a cooling zone cooler in a continuous catalyst regeneration system are provided that include removing a first effluent stream from a regeneration tower, providing the first effluent stream to a regeneration cooler; providing a first air stream to the regeneration cooler to form a heated first air stream, combining at least a portion of the heated first air stream with a second air stream to form a blended cooling air stream, and providing the blended cooling air stream to a cooling zone cooler.

US Patent:

20130004377, Jan 3, 2013

Filed:

Jun 6, 2012

Appl. No.:

13/490085

Inventors:

Ka L. Lok - Buffalo Grove IL, US
Mary Jo Wier - Schaumburg IL, US
Pengfei Chen - Glenview IL, US
Alexander V. Sabitov - Wilmette IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 19/00

US Classification:

422129, 422310

Abstract:

The invention reduces the potential for catalyst fluidization in a reduction vessel of a continuous catalyst regeneration system. The gas exit area from the catalyst reduction zone is increased by ventilating the cylindrical baffle of the upper reduction zone. This provides an increased exit cross-sectional area for the upper reduction gas to escape and reduce the overall exit velocity of the combined upper and lower reduction gases and reduces the potential for catalyst fluidization.

US Patent:

20130005562, Jan 3, 2013

Filed:

Jun 6, 2012

Appl. No.:

13/489656

Inventors:

Ka L. Lok - Buffalo Grove IL, US
Mary Jo Wier - Schaumburg IL, US
Pengfei Chen - Glenview IL, US
Alexander V. Sabitov - Wilmette IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 38/02

US Classification:

502 56

Abstract:

The invention involves a process that reduces the potential for catalyst fluidization in a reduction vessel of a continuous catalyst regeneration system. The gas exit area from the catalyst reduction zone is increased by ventilating the cylindrical baffle of the upper reduction zone. This provides an increased exit cross-sectional area for the upper reduction gas to escape and reduce the overall exit velocity of the combined upper and lower reduction gases and reduces the potential for catalyst fluidization.

US Patent:

20220252254, Aug 11, 2022

Filed:

Dec 30, 2021

Appl. No.:

17/646520

Inventors:

- Des Plaines IL, US
William Yanez - Crystal Lake IL, US
Ka L. Lok - Buffalo Grove IL, US

International Classification:

F22B 1/18
F22D 1/12
F22D 1/28

Abstract:

A method for improving the efficiency of a fired heater without an air preheat system is described. The method involves the use of an additional outboard convection section which is separate from the regular convection section of the fired heater. The outboard convection section uses the boiler feed water or an alternate cold sink to reduce the temperature of the flue gas, thereby improving the efficiency.

US Patent:

20210237015, Aug 5, 2021

Filed:

Jul 8, 2020

Appl. No.:

16/923384

Inventors:

- Des Plaines IL, US
Jeffrey R. Grott - Chicago IL, US
Megan Kubacki - Park Ridge IL, US
Nicholas W. Bridge - Oak Park IL, US
Ka L. Lok - Buffalo Grove IL, US
Kenneth D. Peters - Elmhurst IL, US

International Classification:

B01J 8/02
B01J 8/00

Abstract:

An apparatus in a radial reactor is described. The apparatus comprises a vertically elongated conduit extending around a circumference of an outer wall of the radial reactor, a vertically oriented cylindrical center pipe in the radial reactor, and a catalyst bed. The conduit comprises an inner face and an outer face and a pair of opposing sides. The inner face has a plurality of slots. The pair of opposing sides have a plurality of slots. There is a riser at a top of the vertically elongated conduit. The catalyst bed is defined by the center pipe and the inner face.

US Patent:

20210060509, Mar 4, 2021

Filed:

Aug 26, 2019

Appl. No.:

16/551499

Inventors:

- Des Plaines IL, US
Ka Leung Lok - Buffalo Grove IL, US
Jeffrey Grott - Chicago IL, US
Amresh Kumar Tiwari - Gurgaon, IN

International Classification:

B01J 8/02
C10G 45/56
C10G 47/30
C10G 49/16

Abstract:

A reforming reactor and process of using same in which a flow distributor distributes the process gas circumferentially to the reactive zone. Feed is injected into the reactor into a non-reactive zone. The non-reactive zone has two portions, a first portion receiving the feed, and a second portion receiving a purge gas. The purge gas will flow from the second portion to the first portion to prevent flow of the feed from the first portion to the second portion. The combined gas may be passed to a reaction zone for catalytic reforming. The first portion and the second portion may be separated by a flow distributor having two horizontal portions connected to opposite ends of a vertical portion.

US Patent:

20180264426, Sep 20, 2018

Filed:

May 23, 2018

Appl. No.:

15/987828

Inventors:

- Des Plaines IL, US
Kurt M. Vanden Bussche - Lake in the Hills IL, US
William M. Hartman - Des Plaines IL, US
Pengfei Chen - Glenview IL, US
Ka Lok - Buffalo Grove IL, US

International Classification:

B01J 19/00
F23D 14/12
F23D 23/00
B01J 19/24

Abstract:

Radiant fired heaters used with reactors are described. The apparatus includes at least two sets of radiant fired heaters, the first set being at a second height less than the first height. Each set of radiant fired heaters comprises at least one radiant fired heater. Each radiant fired heater has at least one process coil disposed within the heater, burners, and a flue gas outlet. There is at least one inlet manifold having an inlet and multiple outlets, with each outlet of the inlet manifold in fluid communication with one process coil inlet. There is an outlet manifold having multiple inlets and an outlet, with the multiple inlets in fluid communication with the process coil outlets. A method of selecting a reforming apparatus arrangement is also described.

US Patent:

20180051906, Feb 22, 2018

Filed:

Oct 30, 2017

Appl. No.:

15/798355

Inventors:

- Des Plaines IL, US
Rajeswar Gattupalli - Buffalo Grove IL, US
Ka Lok - Buffalo Grove IL, US
William M. Hartman - Des Plaines IL, US
Bryan J. Egolf - Crystal Lake IL, US

International Classification:

F24H 1/16

Abstract:

An apparatus for a fired heater is presented. The fired heater is designed with a plurality of process coils inside a shell, and with a positioning of the burners for reducing the size of the fired heater. The shell has a general rectangular prismatic shape with combustion inlets for admitting combustion gases from the burners, and the process coils include at least two inlet ports and at least one outlet port.