Submerged combustion melters, wall structures or panels of same, and methods of using same

• US 10,196,294 B2
• Filed: 09/07/2016
• Issued: 02/05/2019
• Est. Priority Date: 09/07/2016
• Status: Active Grant

• Current Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Original Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Inventors: Faulkinbury, Albert Patrick
• Primary Examiner(s): Herring, Lisa L
• Application Number:
  US15/258,900
• Publication Number:
  US 20180065877A1
• Time in Patent Office: 881 Days
• CPC Class Codes: C03B 2211/22 by direct combustion in the melt
• CPC Class Codes: C03B 2211/60 oxy-fuel burner construction
• CPC Class Codes: C03B 5/167 Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches C03B5/20, C03B5/42 take precedence
• CPC Class Codes: C03B 5/2356 Submerged heating, e.g. by using heat pipes, hot gas or submerged combustion burners bubblers C03B5/193
• CPC Class Codes: C03B 5/44 Cooling arrangements for furnace walls
• CPC Class Codes: F23D 14/22 with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
• CPC Class Codes: F23D 14/76 Protecting flame and burner parts
• CPC Class Codes: F23D 14/78 Cooling burner parts
• CPC Class Codes: Y02P 40/50 Glass production, e.g. reusing waste heat during processing or shaping

Abstract

Submerged combustion burner panels, submerged combustion melters including one or more of the panels, and methods of using the same. The burner panel includes a panel body including a fluid-cooled portion and a protective non-fluid cooled portion. An exterior surface defined by the fluid-cooled portion, and an interior surface defined by the protective non-fluid cooled portion, exterior and interior referring to an SCM in which the panel is installed. The fluid-cooled portion has at least one burner support passage of diameter (d1) extending from the exterior surface to a seam where the fluid-cooled and protective non-fluid cooled portions meet supporting at least one fluid-cooled SC burner having a fluid-cooled burner tip attached to a burner body protruding away from the seam. The protective non-fluid-cooled portion has a combustion products flow passage of diameter (d2)<(d1). The burner panels promote burner life and melter campaign length.

Claims

1. A submerged combustion burner panel, or section thereof, comprising:

(a) a panel body comprising a fluid-cooled portion and a protective non-fluid cooled portion, an exterior surface defined by the fluid-cooled portion, and an interior surface defined by the protective non-fluid cooled portion, wherein exterior and interior refer to a submerged combustion melter in which the submerged combustion burner panel is installed;

(b) the fluid-cooled portion having at least one burner support passage of diameter (d1) extending from the exterior surface to a seam where the fluid-cooled and protective non-fluid cooled portions meet supporting at least one fluid-cooled submerged combustion burner having a fluid-cooled burner tip (4) attached to a burner body (6), at least the fluid-cooled burner tip protrudes away from the seam, the protective non-fluid-cooled portion having corresponding at least one combustion products flow passage of diameter (d2)≤

(d1);

(c) the at least one fluid-cooled submerged combustion burner comprising

(i) the burner body (6) comprising an external conduit (10) and a first internal conduit (12) substantially concentric therewith, and positioned internal of the external conduit (10), the external conduit (10) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the first internal conduit (12) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, and a second internal conduit (14) substantially concentric with, and positioned internal of the first internal conduit, the second internal conduit (14) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the external conduit (10) and first internal conduit (12) forming a first annulus (11) there between for passing a cooling fluid, the first internal conduit (12) and the second internal conduit (14) forming a second annulus (13) there between for passing the cooling fluid, and a third internal conduit (15) configured to form a third annulus between the second (14) and third (15) internal conduits, the burner body comprising fuel and oxidant inlet ports near the second ends of the conduits; and

(ii) the burner tip (4) defined by an inner wall (28) and an outer wall (30) connected via a half-toroid crown (32), the outer wall (30) removably fixed to the first end of the external conduit (10) via an outer connection, and the inner wall (28) removably fixed to the first end of the second internal conduit (14) via an inner connection, the burner tip (4) comprising a generally central burner tip flow passage configured to pass a combustible mixture therethrough, the generally central burner tip flow passage defined by the inner wall (28), a top surface of the half-toroid crown (32) is at a distance (d3) from the seam, a distal end of the third internal conduit extends away from the seam a distance (d4)<

(d3), and the interior surface defined by the protective non-fluid cooled portion extends above the burner tip crown a distance (d5), where a ratio of (d5);

(d3) ranges from about 0.5 to about 2.

2. The submerged combustion burner panel of claim 1 wherein the protective non-fluid cooled portion comprises a protective cover material applied to a major surface of the fluid-cooled panel opposite the exterior surface so that at least a circumferential and radial portion of the burner body and the outer wall (30) and crown (32) of the fluid-cooled burner tip are protected from molten or partially molten material that may include foam, the protective cover material defining the at least one combustion products flow passage of diameter (d2) defined by a cover material inner wall (51).

3. The submerged combustion burner panel of claim 2 wherein the protective cover material is applied to, stacked on, coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface so that tips of the submerged combustion burners are protected from the molten or partially molten material that may include foam (molten glass, molten rock, molten mineral) while leaving the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1).

4. The submerged combustion burner panel of claim 3 wherein the protective cover material comprises hard brick stacked onto the major surface of the fluid-cooled panel opposite the exterior surface.

5. The submerged combustion burner panel of claim 3 wherein the protective cover material comprises a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

6. The submerged combustion burner panel of claim 3 wherein the protective cover material comprises glass batch or cullet based material, or mixture or layered combination thereof, combined with a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

7. The submerged combustion burner panel of claim 3 wherein the protective cover material comprises basalt rock or mineral feedstock, or mixture or layered combination thereof, combined with a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

8. The submerged combustion burner panel of claim 1 wherein the fluid-cooled portion of the panel body is a continuous flow submerged combustion melter cooling wall panel.

9. The submerged combustion burner panel of claim 1, the burner tip crown (32) and inner (28) and outer (30) walls comprising same or different corrosion resistant and fatigue resistant material, at least one of the corrosion and fatigue resistance being greater than material comprising the external conduit (10) under conditions experienced during submerged combustion melting of glass-forming, rock-forming, or mineral-forming materials.

10. The submerged combustion burner panel of claim 9 wherein each fluid-cooled burner tip consists of one or more noble metals.

11. The submerged combustion burner panel of claim 1 wherein the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1) has an inner surface angled away from the longitudinal axis at an angle (a) ranging from 0.45 degrees to about 45 degrees.

12. The submerged combustion burner panel of claim 1 wherein the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1) has an inner surface angled toward the longitudinal axis at an angle (β

) ranging from 0.45 degrees to about 45 degrees.

13. The submerged combustion burner panel of claim 1 wherein the at least one combustion products flow passage defines a conical passage having a cone angle (α

) to a burner longitudinal axis (A) ranging from 0.45 to about 45 degrees.

14. The submerged combustion burner panel of claim 1 wherein the at least one combustion products flow passage defines a cylindrical passage of constant diameter, and (d2)<

(d1).

15. A submerged combustion melter including a floor, a roof or ceiling, and a wall connecting the floor and roof, the floor or wall, or section of either of these, comprising the submerged combustion burner panel, or section thereof, of claim 1.

16. A method of melting non-metallic inorganic feedstock using a submerged combustion melter, the method comprising (a) feeding the feedstock into the submerged combustion melter of claim 15, and (b) melting the feedstock so that the fluid-cooled burner tip is protected from molten or partially molten material that may include foam (molten glass, molten rock, molten mineral).

17. A submerged combustion burner panel, or section thereof, comprising:

(a) a panel body devoid of 90 degree or less angles comprising a fluid-cooled portion and a protective non-fluid cooled portion, an exterior surface of the panel body defined by the fluid-cooled portion, and an interior surface defined by the protective non-fluid cooled portion;

(b) the fluid-cooled portion having at least one burner support passage of diameter (d1) extending from the exterior surface to a seam where the fluid-cooled and protective non-fluid cooled portions meet supporting at least one fluid-cooled SC burner having a fluid-cooled burner tip (4) attached to a burner body (6), at least the fluid-cooled burner tip protrudes away from the seam, the protective non-fluid-cooled portion having corresponding at least one combustion products flow passage of diameter (d2)≤

(d1);

(c) the at least one fluid-cooled submerged combustion burner comprising

(i) the burner body (6) comprising an external conduit (10) and a first internal conduit (12) substantially concentric therewith, and positioned internal of the external conduit (10), the external conduit (10) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the first internal conduit (12) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, and a second internal conduit (14) substantially concentric with, and positioned internal of the first internal conduit, the second internal conduit (14) comprising a first end, a second end, and a longitudinal bore having a longitudinal axis, the external conduit (10) and first internal conduit (12) forming a first annulus (11) there between for passing a cooling fluid, the first internal conduit (12) and the second internal conduit (14) forming a second annulus (13) there between for passing the cooling fluid, and a third internal conduit (15) configured to form a third annulus between the second (14) and third (15) internal conduits, the burner body comprising fuel and oxidant inlet ports near the second ends of the conduits; and

(ii) the burner tip (4) defined by an inner wall (28) and an outer wall (30) connected via a crown (32), the outer wall (30) removably fixed to the first end of the external conduit (10) via an outer connection, and the inner wall (28) removably fixed to the first end of the second internal conduit (14) via an inner connection, the burner tip (4) comprising a generally central burner tip flow passage configured to pass a combustible mixture therethrough, the generally central burner tip flow passage defined by the inner wall (28), a top surface of the half-toroid crown (32) is at a distance (d3) from the seam, a distal end of the third internal conduit-extends away from the seam a distance (d4)<

(d3), and the interior surface defined by the protective non-fluid cooled portion extends above the burner tip crown a distance (d5), where a ratio of (d5);

(d3) ranges from about 0.5 to about 2.

18. The submerged combustion burner panel of claim 17 wherein the protective non-fluid cooled portion comprises a protective cover material applied to a major surface of the fluid-cooled panel opposite the exterior surface so that at least a circumferential and radial portion of the burner body and the outer wall (30) and crown (32) of the fluid-cooled burner tip are protected from molten or partially molten material that may include foam (molten glass, molten rock, molten mineral), the cover material defining the at least one combustion products flow passage of diameter (d2) defined by a cover material inner wall (51).

19. The submerged combustion burner panel of claim 18 wherein the protective cover material is applied to, stacked on, coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface so that tips of the submerged combustion burners are protected from the molten or partially molten material that may include foam (molten glass, molten rock, molten mineral) while leaving the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1).

20. The submerged combustion burner panel of claim 19 wherein the protective cover material comprises hard brick stacked onto the major surface of the fluid-cooled panel opposite the exterior surface.

21. The submerged combustion burner panel of claim 19 wherein the protective cover material comprises a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

22. The submerged combustion burner panel of claim 19 wherein the protective cover material comprises glass batch or cullet based material, or mixture or layered combination thereof, combined with a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

23. The submerged combustion burner panel of claim 19 wherein the protective cover material comprises basalt rock or mineral feedstock, or mixture or layered combination thereof, combined with a moldable refractory coated on, troweled on, or poured onto the major surface of the fluid-cooled panel opposite the exterior surface.

24. The submerged combustion burner panel of claim 17 wherein the fluid-cooled portion of the panel body is a continuous flow submerged combustion melter cooling wall panel.

25. The submerged combustion burner panel of claim 17, the burner tip crown and inner and outer walls comprising same or different corrosion resistant and fatigue resistant material, at least one of the corrosion and fatigue resistance being greater than material comprising the external conduit under conditions experienced during submerged combustion melting of glass-forming, rock-forming, or mineral-forming materials.

26. The submerged combustion burner panel of claim 25 wherein each fluid-cooled burner tip consists of one or more noble metals.

27. The submerged combustion burner panel of claim 17 wherein the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1) has an inner surface angled away from the longitudinal axis at an angle (a) ranging from 0.45 degrees to about 45 degrees.

28. The submerged combustion burner panel of claim 17 wherein the corresponding at least one combustion products flow passage of diameter (d2)≤

(d1) has an inner surface angled toward the longitudinal axis at an angle (β

) ranging from 0.45 degrees to about 45 degrees.

29. The submerged combustion burner panel of claim 17 wherein the at least one combustion products flow passage defines a conical passage having a cone angle (α

) to a burner longitudinal axis (A) ranging from 0.45 to about 45 degrees.

30. The submerged combustion burner panel of claim 17 wherein the at least one combustion products flow passage defines a cylindrical passage, and (d2)<

(d1).

31. A submerged combustion melter including a floor, a roof or ceiling, and a wall connecting the floor and roof, the floor or wall, or section of either of these, comprising the submerged combustion burner panel, or section thereof, of claim 17.

32. A method of melting non-metallic inorganic feedstock using a submerged combustion melter, the method comprising (a) feeding the feedstock into the submerged combustion melter of claim 31, and (b) melting the feedstock so that the fluid-cooled burner tip is protected from molten or partially molten material (molten glass, molten rock, molten mineral).