Chun S Choi

US Patent:

20220204858, Jun 30, 2022

Filed:

Sep 10, 2021

Appl. No.:

17/471491

Inventors:

- Lisle IL, US
Chun Wai Choi - Lisle IL, US
Thomas James Hirt - Lisle IL, US

International Classification:

C10B 27/06
F23J 13/08
F23L 13/00
B23P 19/04
F16J 15/00

Abstract:

The present technology is generally directed to vent stack lids and associated systems and methods. In particular, several embodiments are directed to vent stack lids having improved sealing properties in a coke processing system. In a particular embodiment, a vent stack lid comprises a first lid portion proximate to and at least partially spaced apart from a second lid portion. The vent stack lid further comprises a first sealing portion coupled to the first lid portion and a second sealing portion coupled to the second lid portion. In several embodiments, the second sealing portion at least partially overlaps the first sealing portion over the space between the first and second lid portions. In further embodiments, at least one of the first or second sealing portions includes layers of tadpole seals, spring seals, rigid refractory material, and/or flexible refractory blanket.

US Patent:

20220195303, Jun 23, 2022

Filed:

Jul 29, 2021

Appl. No.:

17/388874

Inventors:

- Lisle IL, US
Wes Alderman - Lisle IL, US
Milos J. Kaplarevic - Naperville IL, US
Suresh Mehta - Lisle IL, US
F. Robert Carroll - Lisle IL, US
Chun Wai Choi - Chicago IL, US

International Classification:

C10B 29/04
F24C 15/08
C10B 13/00
C10B 25/12
C10B 25/18
C10B 29/08

Abstract:

A coke oven can include an oven body, a foundation, and a plurality of beams separating the oven body from the foundation, A buckstay applies force to the oven body to maintain compression on the oven body during thermal cycling of the coke oven. The coke oven further comprises a spring-loaded compression device, which can include a restraining device, an anchor coupled to the restraining device, and a spring coupled to the restraining device. The anchor can be attached to one or more of the beams, the foundation of the oven, or to a similar compression device on an opposite side of the oven. The spring applies force between the restraining device and the one or more beams or foundation to compress the buckstay against the oven. The force applied by the spring can maintain structural stability of the coke oven over a plurality of thermal cycles.

US Patent:

20210363427, Nov 25, 2021

Filed:

Mar 3, 2021

Appl. No.:

17/191119

Inventors:

- Lisle IL, US
Rajat Kapoor - Naperville IL, US
Chun Wai Choi - Chicago IL, US

International Classification:

C10B 27/06
F17D 1/02
F01K 3/18
H02K 7/18

Abstract:

A duct intersection comprising a first duct portion and a second duct portion extending laterally from a side of the first duct portion. At least one flow modifier is mounted inside one of the first and second duct portions. The flow modifier is a contoured duct liner and/or the flow modifier includes at least one turning vane. The duct intersection may also include a transition portion extending between the first and second duct portions, wherein the transition portion has a length extending along a side of the first duct portion and a depth extending away from the side of the first duct portion, wherein the length is greater than a diameter of the second duct portion.

US Patent:

20210024828, Jan 28, 2021

Filed:

Jun 10, 2020

Appl. No.:

16/897957

Inventors:

- Lisle IL, US
Cedino Renato De Lima - Serra ES, BR
Charles Humberto Effgen Wernesbach - Serra ES, BR
Jose Sidnei Nossa - Serra ES, BR
Wander Martins Souza - Serra ES, BR
Chun Wai Choi - Lisle IL, US
Amilton Borghi - Serra ES, BR

International Classification:

C10B 39/14
C10B 39/12

Abstract:

The present technology describes various embodiments of systems and methods for maintaining a flat push hot car. In some embodiments, the flat push hot car includes an at least partially enclosed hot box having an interior portion, an exterior portion, a base, and a plurality of sidewalls extending upward from the base. The hot box can he coupled to or integrated with a fluid distribution system. The fluid distribution system can include a spray manifold having one or more inlets configured to release a fluid directed toward the sidewalls of the interior portion so as to provide regional cooling to the hot box.

US Patent:

20200208845, Jul 2, 2020

Filed:

Dec 27, 2019

Appl. No.:

16/729219

Inventors:

- Lisle IL, US
Wes ALDERMAN - Lisle IL, US
Milos KAPLAREVIC - Naperville IL, US
Suresh MEHTA - Lisle IL, US
F. Robert CARROLL - Lisle IL, US
Chun Wai CHOI - Chicago IL, US

International Classification:

F24C 15/08
C10B 25/18
C10B 25/12
C10B 13/00

Abstract:

A coke oven can include an oven body, a foundation, and a plurality of beams separating the oven body from the foundation. A buckstay applies force to the oven body to maintain compression on the oven body during thermal cycling of the coke oven. The coke oven further comprises a spring-loaded compression device, which can include a restraining device, an anchor coupled to the restraining device, and a spring coupled to the restraining device. The anchor can be attached to one or more of the beams, the foundation of the oven, or to a similar compression device on an opposite side of the oven. The spring applies force between the restraining device and the one or more beams or foundation to compress the buckstay against the oven. The force applied by the spring can maintain structural stability of the coke oven over a plurality of thermal cycles.

US Patent:

20170015908, Jan 19, 2017

Filed:

Sep 30, 2016

Appl. No.:

15/281891

Inventors:

- Lisle IL, US
Rajat Kapoor - Naperville IL, US
Chun Wai Choi - Chicago IL, US

International Classification:

C10B 27/06
H02K 7/18
F01K 3/18

Abstract:

A duct intersection comprising a first duct portion and a second duct portion extending laterally from a side of the first duct portion. At least one flow modifier is mounted inside one of the first and second duct portions. The flow modifier is a contoured duct liner and/or the flow modifier includes at least one turning vane. The duct intersection may also include a transition portion extending between the first and second duct portions, wherein the transition portion has a length extending along a side of the first duct portion and a depth extending away from the side of the first duct portion, wherein the length is greater than a diameter of the second duct portion.

US Patent:

20150361347, Dec 17, 2015

Filed:

Dec 28, 2012

Appl. No.:

14/655003

Inventors:

- Lisle IL, US
Cedino Renato De Lima - Serra ES, BR
Charles Humberto Effgen Wemesbach - Serra ES, BR
Jose Sidnei Nossa - Serra ES, BR
Wander Martins Souza - Serra ES, BR
Chun Wai Choi - Lisle IL, US
Amilton Borghi - Serra ES, BR

International Classification:

C10B 39/14

Abstract:

The present technology describes various embodiments of systems and methods for maintaining a flat push hot car. In some embodiments, the flat push hot car includes an at least partially enclosed hot box having an interior portion, an exterior portion, a base, and a plurality of sidewalls extending upward from the base. The hot box can be coupled to or integrated with a fluid distribution system. The fluid distribution system can include a spray manifold having one or more inlets configured to release a fluid directed toward the sidewalls of the interior portion so as to provide regional cooling to the hot box.

US Patent:

20140182683, Jul 3, 2014

Filed:

Dec 28, 2012

Appl. No.:

13/730673

Inventors:

Rajat Kapoor - Naperville IL, US
Chun Wai Choi - Chicago IL, US

Assignee:

SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC. - Lisle IL

International Classification:

F17D 1/02

US Classification:

137 1, 138 39

Abstract:

A duct intersection comprising a first duct portion and a second duct portion extending laterally from a side of the first duct portion. At least one flow modifier is mounted inside one of the first and second duct portions. The flow modifier is a contoured duct liner and/or the flow modifier includes at least one turning vane. The duct intersection may also include a transition portion extending between the first and second duct portions, wherein the transition portion has a length extending along a side of the first duct portion and a depth extending away from the side of the first duct portion, wherein the length is greater than a diameter of the second duct portion.