Submerged combustion melters and burners therefor

Patent metadata

Field	Value
Publication number	US-9643871-B2
Application number	US-201414897933-A
Country	US
Kind code	B2
Filing date	Jun 11, 2014
Priority date	Jun 13, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A submerged combustion melter and burner therefor. The burner may include a first tube having a scaled distal end and a second tube concentric to the first tube, the second tube having a partially sealed distal end with an opening for receiving the first tube, where an annular space is defined between the first and second tubes. The burner further includes a first gas port in the sealed distal end of the first tube, the first gas port supplying a first gas, a second gas port in a distal end of the second tube, the second gas port supplying a second gas to the annular space, and a nozzle on the proximate ends of the first and second tubes. The nozzle provides N first gas outlets and M second gas outlets where the N first gas outlets supply either the first or the second gas into a molten glass environment external the burner, and the M second gas outlets supply either the second or the first gas into the molten glass environment external the burner to thereby mix and combust the first and second gases together in the molten glass environment.

First claim

What is claimed is:

1. A burner for a submerged combustion melter comprising:
a first tube having a sealed distal end;
a second tube concentric to the first tube, the second tube having a partially sealed distal end with an opening for receiving the first tube, wherein a substantially annular space is defined between the first and second tubes;
a first gas port in the sealed distal end of the first tube, the first gas port supplying a first gas;
a second gas port in a distal end of the second tube, the second gas port supplying a second gas to the substantially annular space; and
a nozzle on the proximate ends of the first and second tubes, the nozzle having:
N first gas outlets,
M second gas outlets;

wherein the N first gas outlets supply either the first or the second gas into a molten glass environment external the burner, and
wherein the M second gas outlets supply either the second or the first gas into the molten glass environment external the burner to thereby mix and combust the first and second gases together in the molten glass environment, and
wherein the second gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 10° to about 70°.

2. The burner of claim 1 , wherein N=M.

3. The burner of claim 1 , wherein N and M are each selected from an integer in the group consisting of one, two, three, four, five, six, seven, eight.

4. The burner of claim 1 , wherein the first gas is a fuel and the second gas is an oxidizer.

5. The burner of claim 1 , wherein the first and second gas outlets are arranged in a plurality of gas outlet pairs with a gas outlet pair including a first gas outlet and an adjacent second gas outlet distal the first gas outlet.

6. The burner of claim 1 , wherein the first gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 20° to about 80°.

7. The burner of claim 1 , wherein the second gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 10° to about 70°, and a convergence angle of the first and second gas outlets toward or away from each other is from 0° to about 60°.

8. The burner of claim 1 , wherein each of the N first and M second gas outlets are formed by respective bores through the nozzle and wherein a distal end of at least one bore has a different diameter than a proximate end of the same bore.

9. The burner of claim 1 , wherein the first and second gas outlets are concentrically arranged about a longitudinal axis of the first tube, the second gas outlets distal the first gas outlets.

10. The burner of claim 1 , wherein the nozzle is frustoconical or cylindrical.

11. The burner of claim 1 , wherein the nozzle includes one or more pilot holes formed therein.

12. The burner of claim 1 , wherein the diameter of ones of the N first gas outlets are different from each other.

13. The burner of claim 1 , wherein the diameter of at least one of the M second gas outlets are different from the other M second gas outlets.

14. The burner of claim 1 , wherein the diameter of at least one of the M second gas outlets are different from the diameter of at least one of the N first gas outlets.

15. The burner of claim 1 , wherein the first gas is delivered at a different flow rate than the second gas.

16. The burner of claim 1 , wherein an approximate centerline of the supplied first gas and an approximate centerline of the supplied second gas has a weighted average centerline inclined at least 20° from the longitudinal axis of the first tube.

17. A burner for a submerged combustion melter comprising:
a first tube having a sealed distal end;
a second tube concentric to the first tube, the second tube having a partially sealed distal end with an opening for receiving the first tube, wherein a substantially annular space is defined between the first and second tubes;
a first gas port in the sealed distal end of the first tube, the first gas port supplying a first gas;
a second gas port in a distal end of the second tube, the second gas port supplying a second gas to the substantially annular space; and
a nozzle on the proximate ends of the first and second tubes, the nozzle having:
one or more first gas outlets for delivering a fuel to a molten glass environment,
one or more second gas outlets for delivering an oxidizer to the molten glass environment,

wherein at least one of the first or second gas outlets is inclined by more than 30° from a longitudinal axis of the first tube, and
wherein the second gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 10° to about 70°.

18. The burner of claim 17 , wherein the first and second gas outlets are arranged around a longitudinal central axis of the first tube, the second gas outlets being distal to the first gas outlets.

19. The burner of claim 17 , wherein the first and second gas outlets are arranged in a plurality of gas outlet pairs with a gas outlet pair including a first gas outlet and an adjacent second gas outlet distal to the first gas outlet.

20. The burner of claim 17 , wherein the first gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 20° to about 80°.

21. The burner of claim 17 , wherein the second gas outlet is inclined from a longitudinal axis of the first tube by an angle of between about 10° to about 70°, and a convergence angle of the first and second gas outlets toward or away from each other is from 0° to about 60°.

22. The burner of claim 19 , wherein the first and second gas outlets in a gas outlet pair are within approximately 0.1 inches of each other.

23. The burner of claim 17 , wherein the fuel or the oxidizer leaves the respective first or second gas outlets at a velocity of greater than 100 m/s, 200 m/s or 250 m/s.

24. The burner of claim 17 , wherein the fuel is delivered at a different flow rate than the oxidizer.

25. The burner of claim 17 , wherein each of the first and second gas outlets are formed by respective bores through the nozzle and wherein a distal end of at least one bore has a different diameter than a proximate end of the same bore.

26. The burner of claim 17 , wherein an approximate centerline of the delivered fuel and an approximate centerline of the delivered oxygen has a weighted average centerline included at least 20° from the longitudinal axis of the first tube.

27. A burner for a submerged combustion melter comprising:
a first tube having a sealed distal end;
a second tube concentric to the first tube, the second tube having a partially sealed distal end with an opening for receiving the first tube, wherein a substantially annular space is defined between the first and second tubes;
a first gas port in the sealed distal end of the first tube, the first gas port supplying a first gas;
a second gas port in a distal end of the second tube, the second gas port supplying a second gas to the substantially annular space; and
a nozzle on the proximate ends of the first and second tubes, the nozzle having:
a first plurality of gas outlets for delivering a fuel to a molten glass environment,
a second plurality of gas outlets for delivering an oxidizer to the molten glass environment,

wherein each of the first plurality of gas outlets are inclined by more than 30° from a longitudinal axis of the first tube and each of the second plural

Assignees

• Corning Inc

Inventors

• Cowles Curtis Richard
• Powers Dale Robert

Classifications

• F23D14/58

  characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration · CPC title

• F23D14/78

  Cooling burner parts · CPC title

• F23C3/004

  the chamber being arranged for submerged combustion (F23C3/002 takes precedence) · CPC title

• C03B5/2356 Primary

  Submerged heating, e.g. by using heat pipes, hot gas or submerged combustion burners (bubblers C03B5/193) · CPC title

• C03B2211/22

  by direct combustion in the melt · CPC title