BURNER FOR FLARE STACK

• US 20160290637A1
• Filed: 03/31/2015
• Published: 10/06/2016
• Est. Priority Date: 03/31/2015
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Shannon, Matthew L., Noman, Shiblee, Kraus, Kurt Edward
• Granted Patent: US 9,816,704 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F23D 2900/14021 Premixing burners with swirling or vortices creating means for fuel or air
• CPC Class Codes: F23G 7/08 using flares, e.g. in stacks
• CPC Class Codes: F23N 2241/12 Stack-torches

Abstract

A flare gas burner and a process for disposing of a waste gas using such a burner. The burner has a rounded outer surface that includes a plurality of dimples. The dimples increase the mixing of the waste gas and ambient air prior to combustion. The flare gas burner may have a diameter of 0.61 m and between 300 and 400 dimples. The flare gas burner may comprise a cast material.

Claims

1. A gas flare burner comprising:

a gas deflector having an outer surface for deflecting gas along the outer surface, the outer surface comprising a plurality of dimples;

a waste gas supply tube having an outlet disposed proximate the gas deflector and configured to receive waste gas from a waste gas source; and

,

an arm for supporting the gas deflector.

2. The gas flare burner of claim 1, wherein the gas deflector comprises a bowl shape with a bottom portion, a curved portion and an outer wall portion.

3. The gas flare burner of claim 2, wherein an outer surface of the bottom portion is smooth.

4. The gas flare burner of claim 2 wherein the outer wall portion terminates in a beveled edge with an outer surface being angled towards a center of the gas deflector.

5. The gas flare burner of claim 4 wherein an angle of the outer surface of the beveled edge is approximately 10 degrees from an outer surface of the outer wall portion.

6. The gas flare burner of claim 1 wherein the outlet comprises a gap between the outer surface of the gas deflector and the waste gas supply tube.

7. The gas flare burner of claim 6 wherein the gap is adjustable.

8. The gas flare burner of claim 1 wherein the arm is biased by a biasing element.

9. The gas flare burner of claim 1 wherein a diameter of the outer surface of the gas deflector comprises approximately 0.61 m.

10. The gas flare burner of claim 9 wherein the outer surface includes between 330 and 340 dimples.

11. The gas flare burner of claim 1 wherein the outer surface includes between 300 and 400 dimples.

12. The gas flare burner of claim 1 wherein the dimples include a diameter between 3.1 to 4.5 cm.

13. The gas flare burner of claim 1 wherein the dimples have a depth of between 2.4 to 5.1 mm.

14. The gas flare burner of claim 1 wherein the gas deflecting surface comprises a cast material and wherein the dimples are formed in the cast.

15. The gas flare burner of claim 1 wherein the dimples are arranged such that centers of a first plurality of dimples are spaced apart equidistant along a first circle, and such that centers of a second plurality of dimples are spaced apart equidistant along a second circle, the first circle and the second circle being concentric.

16. The gas flare burner of claim 15 wherein the first plurality of dimples are offset from the second plurality of dimples.

17. The gas flare burner of claim 16 wherein centers of a third plurality of dimples are spaced apart equidistant along a third circle, the third circle being concentric with the first circle and the second circle.

18. The gas flare burner of claim 17 wherein the third plurality of dimples are offset from the second plurality of dimples.

19. A process for disposing of a waste gas comprising:

passing a waste gas to a gas flare burner comprising a gas deflector having an outer surface for deflecting gas along the outer surface, wherein the outer surface of the gas deflector comprises a plurality of dimples;

flowing the waste gas over the outer surface so as to mix oxygen with the waste gas to provide a mixed waste gas; and

,

igniting the mixed waste gas above the gas flare burner to produce a flame.

20. The process of claim 19 wherein a diameter of the outer surface of the gas deflector comprises approximately 0.61 m and wherein the outer surface includes between 300 and 400 dimples.