IP Library › Granted Patent US 12,325,828
Granted Patent B2
US 12,325,828 · App. 17/191,119 · Granted Jun 10, 2025

Exhaust flow modifier, duct intersection incorporating the same, and methods therefor

Inventors: John Francis Quanci (Haddonfield, NJ); Rajat Kapoor (Naperville, IL); Chun Wai Choi (Chicago, IL); Ung-Kyung Chun (Chicago, IL)
Assignee: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
C10B27/06F01K3/185F17D1/02H02K7/1823C10B21/18Y10T137/0318Y10T137/85938Y10T137/87652Y10T137/87676
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Quick Facts
Patent No.
US 12,325,828
App. No.
17/191,119
Granted
Jun 10, 2025
Kind
B2
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.

Claims (23)

1. A method of improving gas flow in an exhaust system, the method comprising:

determining a location within a duct intersection having undesirable flow characteristics, wherein the duct intersection includes (i) a first duct portion having a first wall and configured to direct a gas in a first direction, and (ii) a second duct portion having a second wall angled relative to the first wall and configured to direct a gas in a second direction angled relative to the first direction, the first duct portion having a selectively openable end portion that (i) in normal operation, is closed such that gas flow of the exhaust system is through the second duct portion, and (ii) opens based on 4 pressure of the gas; and

providing a flow modifier in the duct intersection at the determined location, the flow modifier being anchored in a fixed position to a portion of the first wall and a portion of the second wall, such that fluid is inhibited from flowing between the flow modifier and both the portion of the first wall and the portion of the second wall, the flow modifier comprising a contoured duct liner including an outermost surface configured to modify the direction of gas flow at the determined location.

2. The method according to claim 1 , wherein the location is determined with a computer aided design system.

3. The method according to claim 1 , wherein the location is determined by measuring conditions at the duct intersection.

4. The method according to claim 3 , wherein the conditions are selected from the group consisting of temperature, pressure, and velocity.

5. The method according to claim 1 , wherein providing the flow modifier comprises gunning refractory material at the duct intersection at the determined location, wherein the refractory material comprises the flow modifier.

6. The method of claim 1 , wherein the flow modifier has a non-uniform thickness along a dimension of the contoured duct liner.

7. The method of claim 1 , wherein the duct intersection is a tee such that the second duct portion extends from an intermediate region of the first duct portion.

8. The method of claim 1 , wherein the exhaust system is an exhaust system for a coking facility.

9. The method of claim 1 , wherein the conditions include at least one of temperature, pressure, or velocity.

10. A method of improving gas flow in an exhaust system including at least one duct intersection, the method comprising:

determining a location of a poor flow zone within the duct intersection including (i) a first duct having a first wall and configured to direct a gas in a first direction, and (ii) a second duct having a second wall and configured to direct a gas in a second direction angle relative to the first direction, wherein the second wall intersects with and is angled relative to the first wall, wherein the first duct includes a selectively openable end portion that (i) in normal operation, is closed such that gas flow of the exhaust system is through the second duct, and (ii) opens based on a pressure of the gas; and

injecting a fluid at the determined location, thereby forming a flow modifier anchored in a fixed position to a portion of the first wall and a portion of the second wall, such that fluid is inhibited from flowing between the flow modifier and both the portion of the first wall and the portion of the second wall, wherein an outermost surface of the formed flow modifier is configured to modify the direction of fluid flow at the determined location.

11. The method of claim 10 , wherein the flow modifier has a non-uniform thickness along a dimension of the flow modifier.

12. The method according to claim 10 , wherein the location is determined with a computer aided design system.

13. The method according to claim 10 , wherein the location is determined by measuring conditions at the duct intersection.

14. The method according to claim 13 , wherein the conditions are selected from the group consisting of temperature, pressure, and velocity.

15. The method according to claim 10 , wherein the flow modifier is a contoured duct liner.

16. The method according to claim 10 , wherein providing the flow modifier comprises gunning refractory material at the duct intersection at the determined location, wherein the refractory material comprises the flow modifier.

17. The method according to claim 10 , wherein the flow modifier comprises refractory material.

18. The method according to claim 10 , wherein the outermost surface has a convex shape.

19. The method of claim 10 , wherein the conditions include at least one of temperature, pressure, or velocity.

Assignments (4)
SECURITY INTEREST Recorded Jul 25, 2025
From: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 072254/0272 →
CORRECTIVE ASSIGNMENT TO CORRECT THE 1ST ASSIGNOR'S NAME PREVIOUSLY RECORDED AT REEL: 056743 FRAME: 0863. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT . Recorded Jul 14, 2021
From: QUANCI, JOHN FRANCIS; KAPOOR, RAJAT; CHOI, CHUN WAI; CHUN, UNG-KYUNG
To: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
Reel/Frame 056865/0514 →
SECURITY INTEREST Recorded Jul 13, 2021
From: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 056846/0548 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2021
From: QUANCI, JOHN FRANCI; KAPOOR, RAJAT; CHOI, CHUN WAI; CHUN, UNG-KYUNG
To: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
Reel/Frame 056743/0863 →
Continuity (3)
Division 15281891 · Sep 30, 2016
Division 13730673 · Dec 28, 2012
Related Publication 20210363427A1 · Nov 25, 2021
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