Systems and methods for treating a surface of a coke plant

Patent metadata

Field	Value
Publication number	US-11365355-B2
Application number	US-201916729036-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Dec 28, 2018
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The present technology relates to systems and methods for reducing leaks in a system for coking coal. For example, some embodiments provide systems and method for treating a cracked or leaking surface in a system for coking coal. In particular, the present technology includes systems having one or more substances configured to reduce an airflow through one or more cracks by creating an at least partially impermeable patch. The present technology further includes methods for treating surfaces having one or more cracks to reduce an airflow through the one or more cracks.

First claim

We claim:

1. A method of repairing a leak in a coke oven of a coke plant, the coke oven comprising a floor, opposing doors, opposing sidewalls, and a chamber defined by the floor, the opposing doors, and the opposing sidewalls, the method comprising:
applying a high temperature-resistant substance over at least a portion of a surface of the floor that includes the leak, wherein the high temperature-resistant substance—
at least partially forms a patch that reduces the flow of gases through the leak,
is a blanket or paper comprising a perimeter that, when applied over the surface, is peripheral to the leak and
the high temperature-resistant substance is applied to the surface while the coke plant is operating.

2. The method of claim 1 wherein the surface at least partially defines a chamber, and wherein the high temperature-resistant substance is applied while a temperature within the chamber is at or above 100 degrees Celsius.

3. The method of claim 1 wherein the surface at least partially defines a chamber, and wherein the high temperature-resistant substance is applied while a temperature within the chamber is at or above 1200 degrees Celsius.

4. The method of claim 1 wherein the patch is at least partially flexible.

5. The method of claim 1 , wherein the high-temperature-resistant substance is a second substance, the method further comprising, before applying the second high-temperature-resistant substance, applying a first high-temperature-resistant substance to the leak that is different than the second high-temperature resistant substance.

6. The method of claim 5 wherein applying the first high temperature-resistant substance comprises gunning the first high temperature-resistant substance onto the portion of the surface.

7. The method of claim 1 , wherein the high-temperature resistant substance, when applied over the surface of the floor, forms an outermost portion of the floor.

8. A method of repairing a surface of a coke oven configured to operate under a negative pressure and having and oven floor, an oven chamber and a sole flue, the method comprising:
identifying a portion of a surface of the oven floor having one or more cracks, wherein the one or more cracks create an uncontrolled airflow into the coke oven from the sole flue; and
applying a high temperature-resistant substance over at least the portion of the surface of the oven floor having the one or more cracks, wherein the high temperature-resistant substance comprises a blanket or paper having a perimeter that, when applied over the surface, is peripheral to the one or more cracks,
wherein applying the high temperature-resistant substance at least partially reduces the airflow through the one or more cracks.

9. The method of claim 8 wherein the high temperature-resistant substance, when applied over the surface of the oven floor, forms an outermost portion of the floor and configured to contact gas flowing through the coke oven.

10. The method of claim 8 wherein the high temperature-resistant substance is a second high temperature-resistant substance, the method further comprising applying a first high temperature-resistant substance that comprises a spray or flowable material over the one or more cracks, wherein applying the second high temperature-resistant substance comprises applying the second high-temperature-resistant substance over the first high temperature-resistant substance.

11. The method of claim 8 wherein the one or more cracks are identified by (i) observing that the coke oven does not operate at a generally normal temperature, (ii) observing a reduced level of control over the amount of air entering the coke oven, (iii) visually identifying the one or more cracks, (iv) using a gaseous tracer leak detector test, (v) using a smoke bomb test, and/or (vi) observing that the coke coked in the oven is not fully coked out.

12. The method of claim 8 wherein applying the high temperature-resistant substance comprises applying the high temperature-resistant substance without taking the coke oven offline.

13. The method of claim 8 , wherein the applied high-temperature resistant substance is a flexible material.

14. A method of controlling uncontrolled air in a system for coking coal, the method comprising:
identifying one or more cracks in an oven floor of the system for coking coal, wherein the one or more cracks permit an airflow between an external environment and a structure within the system for coking coal; and
applying a first substance to at least a first region of the oven floor having the one or more cracks, wherein the first substance is at least partially flexible, and wherein the first substance comprises a blanket or paper having a perimeter that, when applied to the first region, is peripheral to the one or more cracks;
wherein applying the first substance to the oven floor at least partially reduces the airflow through the one or more cracks.

15. The method of claim 14 wherein applying the first substance reduces a pressure differential through the one or more cracks.

16. The method of claim 14 wherein the first substance is a high temperature-resistant ceramic paper a high temperature-resistant ceramic blanket, or insulated furnace brick.

17. The method of claim 14 wherein the first substance is a layered material comprising at least two layers, wherein each layer comprises a high temperature-resistant ceramic paper or a high temperature-resistant ceramic blanket.

18. The method of claim 14 , wherein the first substance, after being applied to the first region, is a flexible material.

Assignees

• Suncoke Tech & Development Llc

Inventors

• Quanci John Francis
• West Gary Dean
• Fernandez Mayela Carolina

Classifications

• C10B15/02

  with floor heating · CPC title

• C10B29/02

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

• B29C73/10

  using patches sealing on the surface of the article (B29C73/14 takes precedence) · CPC title

• Y02P70/10

  Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working · CPC title

• C10B45/00

  Other details · CPC title