Horizontal heat recovery coke ovens having monolith crowns

Patent metadata

Field	Value
Publication number	US-10526541-B2
Application number	US-201515322176-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Jun 30, 2014
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

The present technology is generally directed to horizontal heat recovery and non-heat recovery coke ovens having monolith crowns. In some embodiments, an HHR coke oven includes a monolith crown that spans the width of the oven between opposing oven sidewalls. The monolith expands upon heating and contracts upon cooling as a single structure. In further embodiments, the crown comprises a thermally-volume-stable material. The crown may be an oven crown, an upcommer arch, a downcommer arch, a J-piece, a single sole flue arch or multiple sole flue arches, a downcommer cleanout, curvilinear corner sections, and/or combined portions of any of the above sections. In some embodiments, the crown is formed at least in part with a thermally-volume-stable material. In further embodiments, the crown is formed as a monolith (or several monolith segments) spanning between supports such as oven sidewalls. In various embodiments, the monolith and thermally-volume-stable features can be used in combination or alone. These designs can allow the oven to be turned down below traditionally feasible temperatures while maintaining the structural integrity of the crown.

First claim

We claim:

1. A horizontal heat recovery coke oven chamber, comprising:
an oven floor;
a forward end portion and a rearward end portion opposite the forward end portion;
a first sidewall extending vertically upward from the floor between the front wall and the back wall and a second sidewall opposite the first sidewall;
a crown positioned above the floor and spanning from the first sidewall to the second sidewall; and
a sole flue formed from a thermally-volume-stable material, which is at least one of near-zero-expansion and near-zero-contraction throughout a coking cycle, and having a plurality of adjacent runs between the first sidewall and the second sidewall; at least a portion of the sole flue formed in monolith construction from a sole flue floor to a sole flue crown.

2. The coke oven chamber of claim 1 wherein the thermally-volume-stable material comprises fused silica or zirconia.

3. The coke oven chamber of claim 1 wherein the sole flue includes at least one sole flue wall comprised of a plurality of sole flue wall segments.

4. The coke oven chamber of claim 3 wherein the sole flue wall segments are comprised of a thermally-volume-stable material.

5. The coke oven chamber of claim 3 wherein the sole flue wall segments are coupled with one another by cooperating ridge and groove features associated with end portions of the sole flue wall segments.

6. The coke oven chamber of claim 3 wherein the sole flue wall segments are coupled with one another by cooperating notch and projection features associated with end portions of the sole flue wall segments.

7. The coke oven chamber of claim 1 wherein the sole flue includes at least one blocking wall section coupled with, and extending generally transverse from, at least one sole flue wall; the at least one blocking wall section comprising of a thermally-volume-stable material.

8. The coke oven chamber of claim 7 wherein the at least one blocking wall section and at least one sole flue wall are coupled with one another by cooperating ridge and groove features associated with an end portion of the at least one blocking wall segment and a side portion of the at least one sole flue wall.

9. The coke oven chamber of claim 1 wherein the sole flue includes at least one generally J-shaped arch section spanning a gap between an end portion of at least one sole flue wall and a sole flue end wall.

10. The coke oven chamber of claim 9 wherein the arch section includes an arched upper end portion and a leg depending from one end of the upper end portion; an opposite free end of the arched upper end portion operatively coupled with the sole flue end wall between a sole flue floor and the oven floor.

11. The coke oven chamber of claim 9 wherein the at least one arch section is comprised of a thermally-volume-stable material.

12. The coke oven chamber of claim 1 wherein the sole flue includes at least one sole flue corner section having a rearward face that is shaped to engage a corner area of at least one of the plurality of adjacent runs and an opposing, curvilinear or concave forward face; the sole flue corner section being positioned to direct fluid flow past the corner area.

13. The coke oven chamber of claim 12 wherein the at least one sole flue corner section is comprised of a thermally-volume-stable material.

14. The coke oven chamber of claim 4 wherein the sole flue includes at least one sole flue corner section having a rearward face that is shaped to engage a corner area of at least one of the plurality of adjacent runs and an opposing, curvilinear or concave forward face; the sole flue corner section being positioned to direct fluid flow past the corner area.

15. The coke oven chamber of claim 1 wherein the oven chamber is further comprised of downcommer channels that extend through at least one of the first sidewall and second sidewall; the downcommer channels being in open fluid communication with the oven chamber and the sole flue.

16. The coke oven chamber of claim 15 wherein the downcommer channels have curved sidewalls.

17. The coke oven chamber of claim 15 wherein the downcommer channels have various geometric shapes cross-sections.

18. The coke oven chamber of claim 15 wherein the downcommer channels are cast using a thermally-volume-stable material.

19. The coke oven chamber of claim 15 wherein the downcommer channels are formed from a plurality of channel blocks having channels that penetrate the channel blocks; the plurality of channel blocks being vertically stacked such that channels from adjacent channel blocks align with one another to define sections of downcommer channels.

20. The coke oven chamber of claim 19 wherein at least one channel block includes channels that penetrate upper and lower end portions of the channel block and a side of the channel block to provide outlets for the downcommer channels.

21. The coke oven chamber of claim 15 further comprising a downcommer cover operatively coupled with an opening to at least one downcommer channel; the downcommer cover including a plug that is shaped to be received within an access opening that penetrates the downcover cover.

22. The coke oven chamber of claim 1 wherein the oven chamber is further comprised of uptake channels that extend through at least one of the first sidewall and second sidewall; the uptake channels being in open fluid communication with the sole flue and a fluid outlet of the coke oven chamber.

23. The coke oven chamber of claim 22 wherein the uptake channels have various geometric shapes sidewalls.

24. The coke oven chamber of claim 22 wherein the uptake channels have various geometric shapes cross-sections.

25. The coke oven chamber of claim 22 wherein the uptake channels are cast using a thermally-volume-stable material.

26. The coke oven chamber of claim 22 wherein the uptake channels are formed from a plurality of channel blocks having channels that penetrate the channel blocks; the plurality of channel blocks being vertically stacked such that channels from adjacent channel blocks align with one another to define sections of uptake channels.

27. The coke oven chamber of claim 26 wherein at least one channel block includes channels that penetrate upper and lower end portions of the channel block and a side of the channel block to provide inlets for the uptake channels.

Assignees

• Suncoke Tech & Development Llc

Inventors

• West Gary Dean
• Quanci John Francis

Classifications

• C10B29/02 Primary

  Brickwork, e.g. casings, linings, walls · CPC title

• C10B29/04

  Controlling or preventing expansion or contraction · CPC title

• C10B15/02 Primary

  with floor heating · CPC title

• C10B5/06

  with horizontal heating flues · CPC title