Field installed perforated flame holder and method of assembly and installation

Patent metadata

Field	Value
Publication number	US-11221137-B2
Application number	US-201916558853-A
Country	US
Kind code	B2
Filing date	Sep 3, 2019
Priority date	Mar 3, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A flame holder system includes a support structure configured to support a plurality of burner tiles within a furnace volume. The support structure includes a frame supporting a support lattice. A number of burner tiles are arranged in an array on the support lattice. The support structure is configured to be assemblable without tools inside the furnace volume, using components that are sized to fit through an access port in a wall of the furnace.

First claim

What is claimed is:

1. A system, comprising:
a support structure configured to support a plurality of burner tiles within a furnace volume, the support structure including:
a frame including frame members configured to be assembled on location; and
a support lattice having a plurality of support members sized to span the frame and configured to be assembled on location with the frame;

a flame holder, including the plurality of burner tiles configured to be assembled into an array on location, supported within the furnace volume by the support lattice;
a furnace having a furnace wall extending around and defining the furnace volume; and
a plurality of support brackets coupled to the furnace wall and extending into the furnace volume, the frame being supported within the furnace volume by the plurality of brackets.

2. The system of claim 1 , wherein the furnace wall includes a floor, the floor having a service access port sized to permit human access to the furnace volume, and wherein the frame members and support members are sized to pass through the service access port.

3. The system of claim 2 , wherein the frame members, the support members, and the burner tiles are each sized to pass through a passage having a dimension of no more than 22 inches on a side.

4. The system of claim 3 , wherein the plurality of burner tiles are separably arranged in an array on the support lattice.

5. The system of claim 3 , comprising a plurality of dowels each positioned between a respective adjacently positioned pair of the plurality of burner tiles and extending from an aperture formed in a face of one of the pair of burner tiles into an aperture formed in a face of the other of the pair of burner tiles.

6. The system of claim 1 , wherein:
the support structure includes a plurality of connecting members; and
the frame members include a first plurality of frame members extending parallel to a first axis and a second plurality of frame members extending parallel to a second axis, perpendicular to the first axis, and wherein each of the first plurality of frame members is configured to lockingly engage a respective one of the plurality of connecting members at first and second ends thereof.

7. The system of claim 6 , wherein each of the plurality of connecting members includes a locking aperture, and wherein the first and second ends of each of the first plurality of frame members are configured to pass into and lockingly engage the locking aperture of the respective ones of the plurality of connecting members.

8. The system of claim 7 , wherein the first and the second ends of each of the first plurality of frame members are configured to pass into the locking aperture of the respective ones of the plurality of connecting members with a clearance of at least ten percent of a diameter of the first and the second ends.

9. The system of claim 7 , wherein:
each of the first plurality of frame members includes a locking tab at each of the first and the second ends thereof;
the locking aperture of each of the plurality of connecting members has a keyhole shape configured to receive an end of one of the first plurality of frame members at a particular orientation; and
while the end of one of the first plurality of frame members is received in the aperture of one of the plurality of connecting members, rotation of the one of the first plurality of frame members relative to the one of the plurality of connecting members away from the particular orientation locks the end of the one of the first plurality of frame members in the aperture of the one of the plurality of connecting members.

10. The system of claim 9 , wherein each of the plurality of connecting members includes a plurality of locking apertures.

11. The system of claim 6 , wherein each of the plurality of support members is configured to lockingly engage a respective one of the plurality of connecting members at the first and the second ends thereof.

12. The system of claim 11 , wherein the plurality of connecting members includes the connecting members configured to couple adjacent pairs of the plurality of support members together.

13. The system of claim 11 , wherein the plurality of connecting members includes plates sized to extend beyond a plane defined by the support members of the support lattice.

14. The system of claim 1 , wherein the frame, the support lattice, and the flame holder are each configured to be assembled by hand without the use of hand tools.

15. The system of claim 1 , wherein the frame, the support lattice, and the flame holder are each made entirely of refractory ceramic.

16. The system of claim 15 , wherein the frame and the support lattice are each made entirely of silicon carbide.

17. The system of claim 15 , wherein the flame holder is made entirely of cordierite.

18. The system of claim 1 , wherein one or more of the burner tiles is a bluff body burner tile.

19. The system of claim 18 , wherein one or more of the bluff body burner tiles is a solid burner tile.

20. The system of claim 18 , wherein one or more of the bluff body burner tiles is a perforated burner tile.

21. The system of claim 20 , wherein one or more of the burner tiles is a reticulated ceramic burner tile.

22. The system of claim 21 , wherein the reticulated ceramic burner tile includes a plurality of reticulated fibers.

23. The system of claim 22 , wherein the reticulated ceramic burner tile includes zirconia.

24. The system of claim 22 , wherein the reticulated ceramic burner tile includes alumina silicate.

25. The system of claim 22 , wherein the reticulated ceramic burner tile includes silicon carbide.

26. The system of claim 22 , wherein the reticulated fibers are formed from extruded mullite.

27. The system of claim 22 , wherein the reticulated fibers are formed from cordierite.

28. The system of claim 22 , wherein the reticulated ceramic burner tile includes about 10 pores per inch.

29. The system of claim 22 , wherein the reticulated ceramic burner tile includes:
an input face;
an output face; and
a plurality of perforations extending between the input face and the output face.

30. The system of claim 22 , wherein the perforations are formed as passages between the reticulated fibers.

31. The system of claim 30 , wherein the perforations are branching perforations.

32. A method, comprising:
assembling a support structure inside of a furnace volume, including:
assembling a frame inside the furnace volume,
supporting the frame within the furnace volume, and
assembling a support lattice on the supported frame;

positioning each of a plurality of burner tiles on the support lattice; and
separably arranging the plurality of burner tiles into an array on the support lattice;
wherein the step of separably arranging the plurality of burner tiles into an array on the support lattice comprises reaching between the support members from below the support lattice and moving each of the plurality of burner tiles into a respective position in the array.

33. The method of claim 32 , wherein the assembling the frame comprises:
orienting each of a first plurality of frame members to lie parallel to a first axis;
orienting a second plurality of frame members to lie parallel to a second axis, perpendicula

Assignees

• Clearsign Comb Corp

Inventors

• Bucher Jonathan
• Kendrick Donald
• Dansie James K
• Karkow Douglas W

Classifications

• F23D2212/101

  Foam, e.g. reticulated · CPC title

• F23D2203/104

  Grids, e.g. honeycomb grids · CPC title

• F27D1/0009

  Comprising ceramic fibre elements · CPC title

• F23D14/70

  Baffles or like flow-disturbing devices · CPC title

• F23D14/26 Primary

  with provision for a retention flame (pilot flame igniters F23Q9/00) · CPC title