US3539285A - Flare stack burner assembly - Google Patents

Flare stack burner assembly Download PDF

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Publication number
US3539285A
US3539285A US808880A US3539285DA US3539285A US 3539285 A US3539285 A US 3539285A US 808880 A US808880 A US 808880A US 3539285D A US3539285D A US 3539285DA US 3539285 A US3539285 A US 3539285A
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US
United States
Prior art keywords
steam
stack
air
conduit
flare stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US808880A
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English (en)
Inventor
John Smith Zink
Robert D Reed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zinklahoma Inc
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John Zink Co
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Filing date
Publication date
Application filed by John Zink Co filed Critical John Zink Co
Application granted granted Critical
Publication of US3539285A publication Critical patent/US3539285A/en
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0071—Adaptation of flares, e.g. arrangements of flares in offshore installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
    • F23G7/085—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks in stacks

Definitions

  • the present invention relates to a burner assembly for the combustion of gases at an elevated location and the invention more specifically pertains to structural elements in association with a flare stack to deliver steam and air throughout the waste gases at the upper end of the stack to insure mixing of the steam and air with virtually all portions of the dump gases in the combustion zone and to provide substantially smoke-free burning of the flared gases.
  • a flare stack is usually of circular construction and it is an object of the present invention to provide nozzle structures for delivering a mixture of steam and air throughout the circular cross-section of the stack and at the upper end thereof and to deliver the steam and air mixture in quantities related to the quantity of flared gas moving upwardly in the various sectors of the stack.
  • Another object of the present invention is to provide nozzle structures which more fully utilizes the port energy of the streams of the smoke suppressant so that the mixture of steam and air penetrates the flared gas stream to thereby avoid the flared gas stream from overpowering the streams of smoke suppressant and to insure a more thorough mixing of the smoke suppressant with all portions of the flared gas.
  • FIG. 1 is an elevational view of the upper end portion of a flare stack embodying the invention and with portions shown in section.
  • FIG. 2 is a plan view of the burner assembly.
  • FIG. 3 is a sectional view on a larger scale and taken on the line 3-3 of FIG. 1.
  • FIG. 4 is an enlarged fragmentary sectional view taken on the line 4-4 of FIG. 2.
  • FIG. 5 is a side elevational view of one of the nozzle structures for distributing a mixture of steam and air to the flared gas within the stack.
  • FIG. 6 is a transverse sectional view taken on the line 6-6 of FIG. 5.
  • FIG. 7 is an inverted plan view of the nozzle structure shown in FIG. 5 with a portion of the conduit line Patented Nov. 10, 1970 leading thereto shown in section and taken on the line 77 of FIG. 5.
  • the invention pertains to a flare stack equipped at its upper end with nozzle structures which provides for projection of a smoke suppressant throughout the flared gas and in the zone where combustion is to take place.
  • an upper portion of the flare stack is indicated at 10 having a generally cylindrical shape and a substantially circular opening 11 at the upper end thereof.
  • the stack 10 may be fabricated to have any desired height so that the combustion of the dump gases adjacent the opening 11 takes place at the desired elevation above the surrounding terrain.
  • the manifold 12 may be mounted on the stack 10 beloW the upper end thereof into which steam is supplied.
  • the steam is used as a smoke suppressant and also supplies energy for aspirating devices 15 which induce air to be mixed with the steam.
  • a tube 14 guides steam from the manifold 12 for release through a port and for delivery into a conduit 16. The steam escaping from the port at the upper end of the tube 14 creates a low pressure condition and air is drawn into the conduit 16 for mixture with the steam.
  • Such an aspirating assembly 15 is associated with each of the conduits which extend to the upper end portion of the stack.
  • the conduit 16 extends through the wall of the stack 10 and upwardly along the axis thereof and terminates adjacent the upper end of the stack.
  • the upper end of the conduit 16 is provided with a plurality of circumferentially spaced ports 22 as shown in FIG. 4 with their axes disposed in a substantially horizontal plane.
  • a disc 23 overlies the upper end of the conduit and a plurality of circumferentially spaced lugs 24 maintain the disc 23 above the upper end of the conduit 16 so that open areas 26 are provided under the disc between the lugs 24.
  • the lugs 24 may be welded to the disc 23 and to the conduit 16.
  • the structure at the upper end of the conduit 16 provides a central discharge device and steam and air guided upwardly by the conduit 16 moves outward through the ports 22 and outwardly through the open areas 26.
  • a feature of the invention pertains to the structure of steam and air distributing devices 31 mounted within the stack 10 adjacent the upper end thereof. These steam and air distributing devices are designed for discharging the smoke suppressant throughout the larger diameter portion of the stack 10.
  • the distributing devices 31 are of elongated shape and are disposed with their major dimensions in radial positions as will be apparent from a consideration of FIGS. 1 and 2.
  • Each distributing device 31 has substantially parallel generally vertical side walls 32 as shown in FIGS. 5 and 6. End walls 34 close the areas between the side Walls 32 and abottom wall 33 closes the space between the end and side walls.
  • a conduit 36 associated with one of the aspirating devices 15 extends through the wall of the stack 10 and upwardly therin as shown in FIG. 1.
  • the conduit 36 has an elliptical shaped upper end portion 37 where it is connected to one of the distributing devices 31.
  • the flattened inverted conical shape portion 37 may be welded to the bottom wall 33 near the radially outer end thereof and a mixture of steam and air is thus delivered into the distributing device 31.
  • An elongated plate 41 (FIGS. 5 and 6) is supported in spaced relationship above the upper edges of the side walls 32.
  • the plate 41 extends from one end wall 34 to the other end wall.
  • the plate 41 is maintained in position by a plurality of arched brackets 42 which are spaced from each other as best shown in FIG. 5. These brackets may be welded to the side walls 32 and to the plate 41 and they provide apertures 44 through which steam and air may escape.
  • the end portions of the plate 41 may be supported by brackets 46.
  • each conduit 36 for each distributing device 31 there is a conduit 36 for each distributing device 31 and each conduit 36 supplies a mixture of steam and air at high velocity into the associated distributing device 31 near the outer end thereof and adjacent the wall of the stack 10.
  • the steam and air impacts against the plate 41 and the greatest pressure developed in each distributing device 31 is in the zone directly above its conduit 36.
  • the steam and air escaping through the apertures 44 immediately above the conduit 36 provides that the greatest volume of the steam and air will be delivered into the dump gases adjacent the wall of the stack 10 and where the circumferential spacing of the outer end portions of 411 1 distributing devices is large.
  • each distributing device 31 and towards the axis of the-.stack 10 there will be less steam and air delivered for mixture with a smaller volume of the dump gases moving upwardly between the distributing devices 31.
  • the air and steam discharged through the apertures 44 is in directions which slope upwardly from a horizontal plane of the upper end of the stack 10.
  • the volume of steam and air discharged into the flared gas is at a maximum near the wall of the stack 10 and lesser amounts are discharged in proceeding towards the axis of the stack 10 and the volume varies in general in proportion to the volume of the flared gas moving upwardly between the distributing device 31.
  • the pipes 51 are disposed outside the stack 10 as shown in FIGS. 1 and 2.
  • the upper ends of the pipes 51 are arranged between the conduits 36.
  • a disc 52 closes the upper end of each pipe 51.
  • the pipes 51 terminate above the distributing devices 31.
  • Each pipe 51 has an opening 53 (FIG. 1) in the perimeter thereof and each opening 53 extends throughout about ninety degrees of the assocated pipe.
  • the center line 55 (FIG. 3) of each opening 53 is disposed to release the steam and air from within each pipe 51 in a radially inward direction between each pair of distributing devices 31.
  • the openings 53 each have an area of approximately three inches.
  • the energy of the escaping smoke suppressant is spent at a distance of about sixty inches from the opening 53, and there is a projection of the steam and air in a generally horizontal direction from each pipe 51 for a distance of approximately fifteen inches.
  • Such projection of the steam and air includes sufficient energy so that the upward movement of the flared gas will not overpower the streams of the smoke suppressant escaping through the openings 53 to provide thorough mixing of the steam and air with the flared gas.
  • the smoke suppressant is thus distributed throughout all of the dump gas moving upwardly through the stack 10 and the distributing devices 31 together with the conduit 16 and the pipes '51 to provide for a thorough mixing of the smoke suppressant with virtually all portions of the dump gases in the area of opening 11 at the upper end of the flare stack.
  • a generally vertical stack having an opening at the upper end through which gas may escape, a central discharge device within said opening substantially at the axis of the stack, means guiding a mixture of steam and air into said discharge device, said discharge device having ports for radially outward escape of the steam and air mixture, a plurality of elongated distributing devices arranged with their lengths in generally radial positions within said opening, said distributing devices having apertures spaced therealong, and means for guiding a mixture of steam and air into the outer end portion of each elongated distributing device whereby a larger volume of the mixture of steam and air escapes through the apertures adjacent outer end of each distributing device than the volume which escapes from the apertures near the inner end of each distributing device.
  • a flare stack burner including a plurality of pipes having upper end portions disposed outside said stack with each of said pipes arranged in a position between lines projectin'g radially outward from two adjacent elongated distributing devices, means for supplying a mixture of steam and air into each pipe, and each of said pipes having a discharge opening -for the escape of the steam and air mixture in a direction towards the axis of said stack.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Treating Waste Gases (AREA)
  • Gas Burners (AREA)
US808880A 1969-03-20 1969-03-20 Flare stack burner assembly Expired - Lifetime US3539285A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80888069A 1969-03-20 1969-03-20

Publications (1)

Publication Number Publication Date
US3539285A true US3539285A (en) 1970-11-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US808880A Expired - Lifetime US3539285A (en) 1969-03-20 1969-03-20 Flare stack burner assembly

Country Status (3)

Country Link
US (1) US3539285A (nl)
FR (1) FR2033693A5 (nl)
GB (1) GB1290104A (nl)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817695A (en) * 1972-06-13 1974-06-18 Zink Co John Airductor flare
US4003693A (en) * 1975-03-06 1977-01-18 Combustion Unlimited Incorporated Flare stack gas burner
US4084935A (en) * 1976-03-15 1978-04-18 John Zink Company Smoke suppressant mixer for flared gases
EP0057518A2 (en) * 1981-01-26 1982-08-11 John Zink Company Immediate ignition and smokeless burning of waste gases
US6840760B1 (en) * 2003-08-13 2005-01-11 Michael R. Keller Gas-assisted flare burner
US20070202449A1 (en) * 2006-02-24 2007-08-30 Gilles Godon Fuel injector, burner and method of injecting fuel
US20190086079A1 (en) * 2017-09-15 2019-03-21 Honeywell International Inc. Low steam consumption high smokeless capacity waste gas flare

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506972A (en) * 1947-03-08 1950-05-09 Standard Oil Co Flare stack tip
US3273627A (en) * 1966-09-20 Plaee stack burner assembly
US3429645A (en) * 1967-09-20 1969-02-25 Zink Co John Flare stack burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273627A (en) * 1966-09-20 Plaee stack burner assembly
US2506972A (en) * 1947-03-08 1950-05-09 Standard Oil Co Flare stack tip
US3429645A (en) * 1967-09-20 1969-02-25 Zink Co John Flare stack burner

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817695A (en) * 1972-06-13 1974-06-18 Zink Co John Airductor flare
US4003693A (en) * 1975-03-06 1977-01-18 Combustion Unlimited Incorporated Flare stack gas burner
US4084935A (en) * 1976-03-15 1978-04-18 John Zink Company Smoke suppressant mixer for flared gases
EP0057518A2 (en) * 1981-01-26 1982-08-11 John Zink Company Immediate ignition and smokeless burning of waste gases
US4373902A (en) * 1981-01-26 1983-02-15 John Zink Company Immediate ignition smokeless burning of waste gases
EP0057518A3 (en) * 1981-01-26 1983-03-16 John Zink Company Immediate ignition and smokeless burning of waste gases
US6840760B1 (en) * 2003-08-13 2005-01-11 Michael R. Keller Gas-assisted flare burner
US20070202449A1 (en) * 2006-02-24 2007-08-30 Gilles Godon Fuel injector, burner and method of injecting fuel
US7789659B2 (en) * 2006-02-24 2010-09-07 9131-9277 Quebec Inc. Fuel injector, burner and method of injecting fuel
US20190086079A1 (en) * 2017-09-15 2019-03-21 Honeywell International Inc. Low steam consumption high smokeless capacity waste gas flare
RU2745312C1 (ru) * 2017-09-15 2021-03-23 Юоп Ллк Факел для отработанного газа с низким потреблением пара и высокими возможностями бездымной работы

Also Published As

Publication number Publication date
GB1290104A (nl) 1972-09-20
FR2033693A5 (nl) 1970-12-04
DE1964876B2 (de) 1976-06-16
DE1964876A1 (de) 1970-11-19

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