Submerged combustion glass melting systems and methods of use

• US 9,731,990 B2
• Filed: 05/30/2013
• Issued: 08/15/2017
• Est. Priority Date: 05/30/2013
• Status: Active Grant

• Current Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Original Assignee: Johns Manville Corporation (Berkshire Hathaway Incorporated)
• Inventors: Baker, John Wayne
• Primary Examiner(s): FRANKLIN, JODI COHEN
• Application Number:
  US14/785,328
• Publication Number:
  US 20160145135A1
• Time in Patent Office: 1,538 Days
• CPC Class Codes: C03B 2211/23 using oxygen, i.e. pure oxygen or oxygen-enriched air
• CPC Class Codes: C03B 2211/60 oxy-fuel burner construction
• CPC Class Codes: C03B 2211/70 Skull melting, i.e. melting or refining in cooled wall crucibles or within solidified glass crust, e.g. in continuous walled vessels
• CPC Class Codes: C03B 5/04 in tank furnaces C03B5/02 takes precedence
• 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 5/193 using gas, e.g. bubblers
• 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 5/262 Drains, i.e. means to dump glass melt or remove unwanted materials
• CPC Class Codes: C03B 5/425 Preventing corrosion or erosion C03B5/44 takes precedence
• CPC Class Codes: C03B 5/43 Use of materials for furnace walls, e.g. fire-bricks
• CPC Class Codes: C03B 5/44 Cooling arrangements for furnace walls
• CPC Class Codes: Y02P 40/50 Glass production, e.g. reusing waste heat during processing or shaping

Abstract

Submerged combustion glass manufacturing systems and methods include a melter having a floor, a roof, a wall structure connecting the floor and roof, and one or more submerged combustion burners mounted in the floor, roof, and/or wall structure discharging combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in the material. The floor, roof, or wall structure may include fluid-cooled refractory material and an optional metallic external shell, or the metallic shell may include coolant passages. One or more conduits drain water condensed from the water vapor from regions of refractory material substantially saturated with the water, and/or from burner supports.

Claims

1. A submerged combustion glass manufacturing system comprising:

a melter comprising a floor, a roof, a wall structure connecting the floor and roof;

one or more submerged combustion burners mounted in the floor, roof and/or wall structure, the submerged combustion burners configured to discharge combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in substantially all of the material;

one or more of the floor, roof, and wall structure comprising fluid-cooled refractory material and an optional metallic external shell, the fluid-cooled refractory material comprising one or more coolant passages; and

one or more drain conduits configured to drain at least some water condensed from the water vapor from one or more regions of refractory material substantially saturated with the water away from the melter.

2. The system of claim 1 comprising one or more other drain conduits configured to drain at least some of the water away from at least one substantially concentric burner holder supporting one or more of the submerged combustion burners.

3. The system of claim 2 wherein at least one of the drain conduits comprise a manually operated valve.

4. The system of claim 2 wherein at least one of the drain conduits comprise an automatically operated valve.

5. The system of claim 1 wherein at least a portion of the melter floor is sloped to be non-horizontal and form one or more low points in the melter floor where water condensate can form said one or more regions of refractory material substantially saturated with the water, and wherein at least one of the drain conduits is configured to drain said water condensate from said one or more low points away from the melter.

6. The system of claim 5 wherein one or more burners is positioned at corresponding one or more low points and supported by corresponding one or more substantially concentric burner holders, one or more of the burner holders comprising drain conduits.

7. A submerged combustion glass manufacturing system comprising:

a melter comprising a floor, a roof, a wall structure connecting the floor and roof;

one or more submerged combustion burners mounted in the floor, roof and/or wall structure, the submerged combustion burners configured to discharge combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in substantially all of the material, the burners supported by one or more substantially concentric burner holders;

one or more of the floor, roof, and wall structure comprising fluid-cooled refractory material and an optional metallic external shell, the fluid-cooled refractory material comprising one or more coolant passages; and

one or more drain conduits configured to drain at least some water condensed from the water vapor from the one or more substantially concentric burner holders away from the burner holder.

8. The system of claim 7 comprising one or more other drain conduits configured to drain at least some of the water away from one or more regions of refractory material substantially saturated with water.

9. The system of claim 8 wherein at least one of the drain conduits comprise a manually operated valve.

10. The system of claim 8 comprising wherein at least one of the drain conduits comprise an automatically operated valve.

11. The system of claim 8 wherein at least a portion of the melter floor is sloped to be non-horizontal and form one or more low points in the floor where water condensate can form said one or more regions of refractory material substantially saturated with water, and wherein at least one of the drain conduits is configured to drain said water condensate away from the melter.

12. The system of claim 11 wherein one or more burners is positioned at corresponding one or more low points, and one or more of the substantially concentric burner holders comprise drain conduits to drain water away from the burner holder.

13. A submerged combustion glass manufacturing system comprising:

a melter comprising a floor, a roof, a wall structure connecting the floor and roof;

one or more submerged combustion burners mounted in the floor, roof and/or wall structure, the submerged combustion burners configured to discharge combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in substantially all of the material, the burners supported by one or more substantially concentric burner holders;

one or more of the floor, roof, and wall structure comprising refractory material and a fluid-cooled external metallic shell, the fluid-cooled external metallic shell comprising one or more coolant passages; and

one or more drain conduits configured to drain at least some water condensed from the water vapor from one or more regions of refractory material substantially saturated with the water away from the melter.

14. The system of claim 13 comprising one or more other drain conduits configured to drain at least some of the water away from at least one substantially concentric burner holder supporting one or more of the submerged combustion burners.

15. The system of claim 14 wherein at least one of the drain conduits comprise a manually operated valve.

16. The system of claim 14 comprising wherein at least one of the drain conduits comprise an automatically operated valve.

17. The system of claim 13 wherein at least a portion of the melter floor is sloped to be non-horizontal and form one or more low points in the floor where water condensate can form said one or more regions of refractory material substantially saturated with water, and wherein at least one of the drain conduits is configured to drain water from one or more of the low points away from the melter.

18. The system of claim 17 wherein one or more burners is positioned at corresponding one or more low points and supported by corresponding one or more substantially concentric burner holders, one or more of the burner holders comprising drain conduits to drain water away from the burner holder.

19. A submerged combustion glass manufacturing system comprising:

a melter comprising a floor, a roof, a wall structure connecting the floor and roof;

one or more submerged combustion burners mounted in the floor, roof and/or wall structure, the submerged combustion burners configured to discharge combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in substantially all of the material, the burners supported by one or more substantially concentric burner holders;

one or more of the floor, roof, and wall structure comprising refractory material and a fluid-cooled external metallic shell, the fluid-cooled external metallic shell comprising one or more coolant passages; and

one or more drain conduits configured to drain at least some of the water condensed from the water vapor away from at least one substantially concentric burner holder supporting one or more of the submerged combustion burners.

20. The system of claim 19 comprising one or more other drain conduits configured to drain at least some water condensed from the water vapor from one or more regions of refractory material substantially saturated with the water away from the melter.

21. The system of claim 20 wherein at least one of the drain conduits comprise a manually operated valve.

22. The system of claim 21 wherein at least one of the drain conduits comprise an automatically operated valve.

23. The system of claim 19 wherein at least a portion of the melter floor is sloped to be non-horizontal and form one or more low points in the melter floor where water condensate can form said one or more regions of refractory material substantially saturated with the water, and wherein at least one of the drain conduits is configured to drain said water condensate from said one or more low points away from the melter.

24. The system of claim 23 wherein one or more burners is positioned at corresponding one or more low points and supported by corresponding one or more substantially concentric burner holders, one or more of the burner holders comprising drain conduits.

25. A submerged combustion glass manufacturing method comprising:

melting glass-forming materials in a submerged combustion melter, the melter comprising a floor, a roof, and a wall structure connecting the floor and roof, one or more of the floor, roof, and wall structure comprising fluid-cooled refractory material and an optional metallic external shell, the fluid-cooled refractory material comprising one or more coolant passages;

combusting a fuel in one or more submerged combustion burners mounted in the floor, roof, and/or wall structure, the submerged combustion burners discharging combustion products including water vapor under a level of the glass-forming material being melted in the melter and creating turbulent conditions in substantially all of the material, one or more regions of the fluid-cooled refractory material becoming substantially saturated with water from condensed water vapor from combustion products; and

draining at least some of the water from the melter.

26. The method of claim 25 wherein the draining occurs by draining at least some of the water from said one or more regions of the fluid-cooled refractory material through one or more conduits fluidly connected thereto.

27. The method of claim 25 wherein the draining occurs by draining at least some of the water from one or more substantially concentric burner holders supporting one or more of said submerged combustion burners through one or more conduits fluidly connected thereto.

28. The method of claim 26 wherein the draining occurs by draining at least some of the water from one or more substantially concentric burner holders supporting one or more of said submerged combustion burners through one or more conduits fluidly connected thereto.

29. The method of claim 25 wherein at least some of the draining occurs manually.

30. The method of claim 25 wherein at least some of the draining occurs automatically.

31. A submerged combustion glass manufacturing method comprising:

melting glass-forming materials in a submerged combustion melter, the melter comprising a floor, a roof, and a wall structure connecting the floor and roof, one or more of the floor, roof, and wall structure comprising refractory material and a fluid-cooled external metallic shell, the fluid-cooled external metallic shell comprising one or more coolant passages;

combusting a fuel in one or more submerged combustion burners mounted in the floor, roof, and/or wall structure, the submerged combustion burners discharging combustion products including water vapor under a level of the glass-forming material being melted in the melter and creating turbulent conditions in substantially all of the material, one or more regions of the fluid-cooled refractory material becoming substantially saturated with water from condensed water vapor from combustion products; and

draining at least some of the water from the melter.

32. The method of claim 31 wherein the draining occurs by draining at least some of the water from said one or more regions of the fluid-cooled refractory material through one or more conduits fluidly connected thereto.

33. The method of claim 31 wherein the draining occurs by draining at least some of the water from one or more substantially concentric burner holders supporting one or more of said submerged combustion burners through one or more conduits fluidly connected thereto.

34. The method of claim 32 wherein the draining occurs by draining at least some of the water from one or more substantially concentric burner holders supporting one or more of said submerged combustion burners through one or more conduits fluidly connected thereto.

35. The method of claim 31 wherein at least some of the draining occurs manually.

36. The method of claim 31 wherein at least some of the draining occurs automatically.

37. A submerged combustion glass manufacturing system comprising:

a melter comprising a floor, a roof, a wall structure connecting the floor and roof;

one or more submerged combustion burners mounted in the floor, roof and/or wall structure, the submerged combustion burners configured to discharge combustion products including water vapor under a level of material being melted in the melter and create turbulent conditions in substantially all of the material, the burners supported by one or more substantially concentric burner holders;

one or more of the floor, roof, and wall structure comprising refractory material and a fluid-cooled external metallic shell, the fluid-cooled external metallic shell comprising one or more coolant passages; and

a clear sight glass and drain conduit configured with at least two valves to allow monitoring of water between at least one the burners and burner holders and periodically drain at least some of the water condensed from the water vapor away from at least one substantially concentric burner holder supporting one or more of the submerged combustion burners.

38. A submerged combustion glass manufacturing method comprising:

melting glass-forming materials in a submerged combustion melter, the melter comprising a floor, a roof, and a wall structure connecting the floor and roof, one or more of the floor, roof, and wall structure comprising refractory material and a fluid-cooled external metallic shell, the fluid-cooled external metallic shell comprising one or more coolant passages;

combusting a fuel in one or more submerged combustion burners mounted in the floor, roof, and/or wall structure in burner holders, the submerged combustion burners discharging combustion products including water vapor under a level of the glass-forming material being melted in the melter and creating turbulent conditions in substantially all of the material, one or more regions of the fluid-cooled refractory material becoming substantially saturated with water from condensed water vapor from combustion products;

monitoring water accumulation between at least one of the submerged combustion burners and its corresponding burner holder using a clear sight glass and drain conduit configured with at least two valves; and

periodically draining at least some of the water condensed from the water vapor away from at least one corresponding burner holder supporting the at least one of the submerged combustion burners using the drain conduit.