US3547567A - Flare stack combustion tip - Google Patents

Flare stack combustion tip Download PDF

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Publication number
US3547567A
US3547567A US754135*A US3547567DA US3547567A US 3547567 A US3547567 A US 3547567A US 3547567D A US3547567D A US 3547567DA US 3547567 A US3547567 A US 3547567A
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gas
combustion
tip
flare stack
channels
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US754135*A
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English (en)
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Alexander J Turpin
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SMOKE BAN Mfg Inc
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SMOKE BAN Mfg Inc
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    • 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

  • FIGURE 8 FIGURE 6
  • FIGURE 7 IN VENIOR.
  • the present invention relates to the disposal of gases by combustion. More particularly, the present invention relates to a flare stack combustion tip for the burning of gases resulting from the operation of chemical plants and refineries and other operations which produce combustible gases which must be disposed of either continuously or intermittently.
  • waste gases which must be disposed of in a safe and eflective manner. Often these waste gases are merely by-products of a process and are consistently produced in relatively constant volume. In other instances, because of upsets in plant operations, large quantities of gases such as feed materials, intermediates or products must be disposed of quickly to prevent explosions or other hazardous condition from occurring in the plant. Regardless of source, however, the most commonly employed means of disposing of waste gases in the combustion thereof, generally, by means of elevated flare stacks. The eflectiveness of this means of disposal of waste gases is largely dependent upon the efliciency of the combustion tip aflixed to the upper end of the elevated flare stack. Combustion tip, as used herein, refers to that structure at the upper end of a flare stack and from which waste gases pass to the burning zone.
  • combustion tip As a result of the increasing emphasis placed on air pollution and the enactment of anti-pollution legislation in many states and other political subsivisions within the United States, one of the most important criteria for a combustion tip is that it provide for the burning of waste gases with little or no smoke production and the substantial elimination of odors and hazardous gases resulting from incomplete combustion. While several flare stack combustion tips have been proposed for smokeless combustion of waste gases, in general, these combustion tips are rather narrowly limited in the amount of waste gas which can be burned per unit time without smoke production. The burning of waste gases without the production of smoke and with the alleviation of odors and hazardous gases escaping to the atmosphere requires complete combustion of such gases which in turn requires an adequate supply of oxygen for mixing with the waste gases. In most instances, the failure to provide for such adequate supply of oxygen, as air, has been the major deficiency of the known combustion tips.
  • prior art combustion tips fail to provide for a fixed flame stand-off from the exit of the tips.
  • burning takes place immediately at the exit of the combustion tip while at periods of high gas flow, the flame is at a distance from the exit.
  • Prolonged burning immediately adjacent the combustion tip results in early deterioration of the metal parts of the tip. If flaming takes place at too great a distance from the combustion tip, the flame may not provide for complete combustion and is susceptible to being easily extinguished. It is desirable to maintain a substantially fixed flame stand-ofI from the exit of the combustion tip at an optimum distance therefrom regardless of gas flowrate.
  • the pilot lights employed for ignition of the waste gases must be located around the periphery of the flare nozzle. Therefore, to insure ignition in areas of variable wind direction, a multiplicity of pilots spaced around the periphery must be employed. Additionally, with conventional combustion tips, the pilot lights generally are extended upward and inward beyond the flare tip and into the area through which efiluent waste gas will pass. Therefore, during periods of gas flow, the waste gas is continuously passing around and over the pilot light and at low gas flow, the pilot light is within the flame of the burning gases. As a result, the pilot lights quickly deteriorate and fail and must be replaced.
  • Another object of the present invention is to provide a flare stack combustion tip whereby large quantities of waste gases may be rapidly burned with little or no smoke production.
  • An additional object of the present invention is to provide a flare stack combustion tip which provides for a continuous flame with a significant reduction in fuel requirements as compared to conventional combustion tips.
  • Another object of the present invention is to provide a flare stack combustion tip whereby waste gases are readily and effectively ignited on exciting the combustion tip regardless of wind velocity and direction.
  • Still another object of the present invention is to provide a combustion tip which provides for a substantially fixed flame stand-01f from the exit of the tip.
  • Yet another object of the present invention is to provide a flare stack combustion tip which requires fewer pilot light and which allows an arrangement of pilot lights whereby a longer life for such pilot lights result.
  • a remaining object of the present invention is to provide a flare stack combustion tip which remains cooler during combustion of waste gases thereby reducing metal deterioration due to high temperatures.
  • a flare stack combustion tip comprising a centrally disposed gas conduit having an opening in the lower end thereof for communication with a flare stack and the upper end thereof being at least partially closed, a plurality of spaced apart gas conducting channel extending outward from said gas conduit and in open communication along one end thereof with said gas conduit, and a gas emission orifice in an upper segment of each of said gas conducting channels and extending substantially the entire length of said upper segment, said gas emission orifices being disposed radially with respect to the axis of said gas conduit.
  • FIG. 1 of the drawings is a cross-sectional view of an embodiment of the combustion tip of the present invention.
  • FIG. 2 of the drawings is a top view of the embodiment of the combustion tip illustrated in FIG. 1.
  • FIG. 3 of the drawings is a top view of a damper of the type used in the combustion tip of the present invention.
  • FIG. 4 of the drawings is a cross-sectional view of a particularly useful embodiment of the combustion tip of the present invention.
  • FIG. 5 of the drawings is an end cross-sectional view of a gas conducting channel of the combustion tip of the present invention particularly illustrating the pressure control plate feature of said channel.
  • FIG. 6 of the drawings is a side elevational view of a gas conducting channel of the type illustrated in FIG. 5.
  • FIG. 7 of the drawings is a top view of a gas conducting channel of the type illustrated in FIGS. 5 and 6.
  • FIG. 8 of the drawings is an end cross-sectional view of a flame retention feature of the combustion tip of the present invention.
  • FIG. 9 of the drawings is a cross-sectional view of an embodiment of the combustion tip of the present invention aflixed to the upper end of a self supporting flare stack.
  • Flare stack 10 may be supported by means of guy wires or a surrounding derrick type structure or may be self supporting as is illustrated in FIG. 9.
  • the combustion tip comprises a centrally disposed gas conduit 11 which is afiixed atop and in open communication with flare stack 10.
  • Conduit 11 may be generally cylindrical in shape but most often, as shown in the drawings, ha a lower segment 12 which is substantially cylindrical in shape and an upper segment 13 which is generally conical in shape, the apex of the cone representing the upper end of conduit 11.
  • the upper end of conduit 11 is completely closed to gas flow as illustrated in FIGS. 1 and 2 or only partially closed, the latter being preferred somewhat.
  • partially closed is meant that the area of the opening, if any, in the upper end of conduit 11 is less than the area of the opening in the lower end of conduit 11.
  • channels 14 Flaring outward from upper segment 13 of conduit 11 are a plurality of gas conducting channels 14. As viewed from an end thereof, channels 14 appear flattened in shape presenting a rectangular appearance. Viewed from the side, channels 14 appear triangular in shape. Instead of this flattened, triangular shape, however, channels 14 may take any number of other configurations. For example, channels 14 may be generally rounded or elliptical as viewed from an end thereof and rectangular, parallelogram shaped or trapezoidal, etc., as viewed from the side. These channels 14 are in open communication along the entire base thereof with conduit 11 and serve to distribute or channel gas from conduit 11 to the combustion zone. The number of channels 14 may vary depending upon the particular application of the present combustion tip.
  • each of channels 14 contain a gas emission orifice 16 through which waste gas is discharged for burning, the orifices 16 being radially disposed with respect to the axis of conduit 11.
  • Orifice 16 extends substantially the entire length of upper end 15 though, if desired, it may extend a lesser distance and may be comprised of a plurality of spaced apart slotted or round openings. However, best results are achieved with the single slotted orifice 16 extending the full length of upper end 15 of channels 14.
  • Orifice 16 often has a greater width at its outer end 17 than at its inner end which is a result of walls 18 of channels 14 being spaced further apart at the outer edge 19 of channels 14 than at the inner edge or point 20.
  • a lip section 21 which is attached to one wall 18 of channels 14 extends the entire length of upper end 15 partially closing end 15 to gas flow therethrough.
  • lip section 21 imparts turbulence to gases discharged from orifice 16, generally causing such gases to deviate at an angle of less than degrees from the normal upward flow path.
  • Such deviation of the gas flow path from each of channels 14 imparts a cyclic motion to the gases exiting the combustion tip.
  • Such movement of the exiting waste gases aids in the induction and mixing of 'air with the waste gases thereby promoting complete combustion.
  • the exiting waste gase are less affected by wind as a result of this angular deviation in the efiiuent waste gas flow path.
  • a damper 22 is provided as a feature of the combustion tip of the present invention.
  • Damper 22 serves to prevent flashbacks within the flare stack and to reduce the quantity of gases required to keep the flare stack purged of explosive mixtures of waste gases and air resulting from periods when there is substantially no waste gas flow through the flare stack.
  • Damper 22 is illustrated in the drawings as being positioned horizontally within a lower portion of lower segment 12 of conduit 11. From the standpoint of manufacturing a complete combustion tip unit and to hold any flashback that should occur as near the top of the flare as possible, such positioning is preferred.
  • the damper may be constructed into the flare stack well below the combustion tip.
  • damper 22 includes a plurality of triangular gates 23 hinged to a radially disposed header 24. As the gas pressure below the damper 22 increases above a predetermined minimum value, gates 23 are pushed open by the gas to thereby permit gas to flow upward into the combustion tip. However, at very low gas pressures, gates 23 generally remain closed. In a preferred embodiment, damper 22 is provided with one or more openings to permit limited gas flow therethrough.
  • damper 22 serves to prevent flashbacks within the flare stack by preventing the downflow of air into the flare stack when gates 23 are closed. Additionally, should an explosive mixture of waste gases and air form and flash within the combustion tip, the closure of gates 23 will prevent the downward progression of the flashback into the flare stack.
  • pilot lights 25 Primary ignition of the Waste gas is by pilot lights 25 positioned near orifices 16. Fuel for maintaining a flame in pilot lights 25 is supplied by means of pipes 26. Virtuall any number of pilot lights may be employed, however, because of the arrangement of the channels 14 of the combustion tip of the present invention, fewer pilot lights are required. Additionally, as will be more fully discussed below, one of the features of the present invention is the maintenance of continuous flame from the combustion tip itself with very low gas requirements, which substantially aids in insuring ignition of waste gases passing from the combustion tip. As a result of such features of the present invention, usually a single pilot light is adequate to insure ignition without regard to wind direction and velocity. However, it is usually desirable to provide a second pilot light in order to insure ignition in the event of failure of the first pilot light.
  • pilot lights 25 are preferably positioned between channels 14 adjacent the confluence of the upper ends whereby regardless of the Wind direction, gases will be blown across the pilot light flame and thereby ignited.
  • the pilot lights preferably do not extend above the upper ends 15 of channels 14 and, thus, do not extend into the waste gas effluent from such channels 14.
  • the design of the combustion tip of the present invention permits pilot lights so positioned to effectively ignite waste gases exiting the combustion tip.
  • the particular type of pilot light used is not particularly critical to the present invention and any of those commonly employed for such utility may be used.
  • channels 14 of the combustion tip are provided with hinged pressure control plates 27 which provide for substantially complete closure of orifices 16 during periods of low gas flow.
  • pressure control plates 27 are hinged to a wall 18 of channel 14 opposite the wall to which lip section 21 is attached.
  • pressure control plate 27 is hinged to wall 18 at a point below the upper edge thereof and such as to extend upward across channel 14 to thereby extend through orifice 16 and in closed position, to rest against lip section 21.
  • the means of hinging pressure control plate 27 to wall 18 preferably comprises two or more lugs 28 which extend from the base 29 of pressure control plate 27 through slots 30 in wall 18.
  • Lugs 28 terminate exterior of channel 14 in a head 31 having a diameter which is greater than the width of slots 30.
  • caps 32 are provided on the outside of wall 18 to cover slots 30 and form a leakproof chamber 33 in which head 31 works and in which any gas passing through slots 30 is contained.
  • pressure control plate 27 By means of pressure control plate 27, a substantially constant velocity for the gases exiting orifices 16 can be maintained over a wide range of gas flows. Without pressure control plate 27, as gas pressures and flows vary within channels 14 and flare stack 10, the velocity of the gases passing from orifices 16 will vary as will in turn, the distances of flame stand-off from the orifices 16. Without pressure control plates 27 and during periods of low gas pressure, gas velocity through orifice 16 will be low and burning will occur substantially at orifice 16 which, as noted above, will result in extreme heating of the metal surfaces adjacent orifice 16 which in turn significantly shortens the useful life of such metal surfaces.
  • pressure control plates 27 Through the use of pressure control plates 27, even at low gas flows, suflicient exit gas velocities can be maintained to provide for a significant flame stand-01f from orifices 16 and because pressure control plate 27 raises proportionally to increases in gas flow thereby increasing the open area of orifices 16, substantially the same flame stand-off is maintained through a substantial increase in gas flow within flare stack 10. Pressure control plate 27 also aids in preventing flashbacks within the combustion tip by serving to increase gas velocities above the combustion tip thereby preventing air from passing into the combustion tip.
  • Pressure control plate 2.7 preferably is designed such that it does not completely close gas flow through orifice 16 even when in fully closed position.
  • pressure control plate 27 does not extend to the outer end of orifice 16 thereby leaving a space 34 adjacent the outer end of orifice 16 through which gas can continuously flow.
  • Pressure control plate 27 is sized and shaped such that space 34 is suflicient to permit just enough gas to pass therethrough to maintain a minimum flame adjacent the outermost corner of channels 14.
  • FIG. 4 A further means of providing a continuous flame from the combustion tip is illustrated in FIG. 4.
  • This means includes a conical valve member 35 and a valve seating ring 36.
  • An annular opening 37 between valve seating ring 36 and conical valve member 35 is provided whereby when valve member 35 is seated with respect to valve seating ring 36, gas will be permitted to flow between valve member 35 and valve seating ring 36.
  • annular opening 37 has a radial distance of no less than of an inch and seldom more than of an inch when valve member 35 is seated.
  • a tubular anchor pipe 38 extends downwardly from the apex of conical valve member 35 and is slidably engaged for limited vertical movement with flow pipe 39 which is coaxially aligned with conduit 11 but of substantially less diameter than conduit 11.
  • the limited vertical movement of anchor pipe 38 is provided by an elongated opening 40 through anchor pipe 38 and bolt 41 which extends across fiow pipe 39 through elongated opening 40.
  • Such arrangement limits the vertical movement of anchor pipe 38 and in turn, the vertical movement of valve member 35, to a distance equal to the vertical length of elongated opening 40.
  • the resting of the upper edge of elongated opening 40 on the upper surface of bolt 41 serves to position valve member 35 with respect to valve seating ring 36 in such manner as to provide annular opening 37.
  • annular opening 37 may be formed by means other than elongated opening 40 and bolt 41 such as for example, by means of a plurality of lugs extending from valve seating ring 36 toward the center thereof upon which valve member 35 may rest or by a plurality of lugs extending from the conical surfaces of valve member 35 which will rest upon surfaces of valve seating ring 36.
  • Flow pipe 39 preferably extends through damper 22 to allow for flow of gas up through the combustion tip even when the gas pressures in flare stack are too low to open gates 23 of damper 22.
  • gas flow passes up ward through flow pipe 39 and around valve member 35 and through annular opening 37 whereupon the gases are burned. In such manner, a continuous flame can be maintained at the top of the combustion tip even with amounts of gas too small to open gates 23 of damper 22.
  • valve member 35 is forced upward thereby increasing the radial width of annular opening 37 to permit more gas to pass to the combustion area.
  • Valve member 35 is designed in weight and cooperation with the limited vertical movement permitted by the attachment of tubular anchor pipe 38 to flow pipe 39 such that at approximately the pressure required to raise valve member 35 to its full height from seating ring 36, pressure control plates 27 begin to open thereby permitting gas flow through orifices 16 which gas is then ignited by the flame resulting from the gases passing through annular opening 37 and the space 34 adjacent the outermost edge of channels 14.
  • the conical valve member 35 may be replaced with a substantially flat plate valve member which functions as above described. Also, in many instances, circumstances may not make attractive the use of a variable opening valve means in the upper end of conduit 11. In such instances, a circular plate or a conical member as described above may be fixedly positioned in the upper end of conduit 11 in such manner as to provide a fixed size annular opening around the periphery of said plate or member. With respect to the discussions herein of the annular opening it is to be understood that the term applies not merely to a substantially continual open space surrounding conical valve member 35 but also includes a plurality of spaced channels annularly arranged about the surface of valve member 35 or other such arrangement.
  • shroud 42 mounted to encircle conduit 11 and channels 14. While shroud 42 may be generally cylindrical in shape as shown in FIG. 1, it is preferably venturi shaped as illustrated in FIG. 4. Shroud 42 usually extends well below the lowermost point of channels 14 and slightly above or approximately equal in heighth with the uppermost portions of channels 14. By maintaining the upper edge of shroud 42 only slightly above or in substantially the same horizontal plane as the uppermost segments of channels 14, the formation of a potential combustion chamber within shroud 42 is substantially avoided. Should shroud 42 extend a substantially distance above the uppermost segments of channels 14, waste gases and air can readily accumulate within the confines of the shroud and upon ignition, can destroy the shroud and possibly the combustion tip.
  • shroud 42 is positioned with respect to conduit 11 and channels 14 by means of lower supporting plates 43 attached to conduit 11 and upper plates 44 attached to the outermost edges of channels 14.
  • the primary purposes of shroud 42 are to aid in the induction of air into the flame area and to protect pilot lights and the continuous flame generated during low gas flows through conduit 11 and channels 14 from wind currents.
  • the upper plates 44 attaching shroud 42 to channels 14 are designed to serve a secondary and quite useful purpose.
  • these upper plates are a substantially V- shaped member attached to channels 14 and shroud 42 such that the apex of the V is just below the outermost edge of channels 14.
  • Such arrangement results in formation of a receptacle or cup in which gases may collect and burn in cooperation with the flame permitted by space '34 during periods of low gas flow thereby aiding in the retention of a continuous flame from the combustion tip.
  • This V-shaped design of upper plates 44 is particularly useful in large combustion tips wherein there is a considerable distance between the outer end of orifices 16 and pilot lights 25 adjacent the confluence of the upper ends of channels 14 or the valve member 35, if such is provided.
  • a steam conducting ring 45 is disposed around and substantially coaxial with conduit 11 adjacent the lower edge of shroud 42, usually just below such lower edge. Steam conducting ring 45 is connected to a source of high pressure steam by means of steam line 46.
  • a plurality of spaced apart steam nozzles 47 are connected to steam conducting ring 45 and positioned to direct a jet of steam upward between and around channels 14.
  • a considerable distance usually several feet, will separate the steam nozzles 47 and the actual combustion zone in order to obtain a maximum air induction into the burning area.
  • the exact distance will, of course, vary with the size of the combustion tip, steam pressure, normal flame standoff, and other such factors and can readily be determined by those skilled in the art.
  • the combustion tip of the present invention is shown aflixed to the top of a self supporting flare stack which has a primary centrally disposed waste gas conduit 48 which is surrounded by a coaxially aligned annular air conduit 49.
  • a primary centrally disposed waste gas conduit 48 which is surrounded by a coaxially aligned annular air conduit 49.
  • Such conduit within a conduit arrangement along with the attendant spacing plates (not shown) provide a flare stack which requires little or no supporting structures to maintain it in an upright position.
  • generally all of the primary air required to secure substantially complete combustion of the Waste gas is provided by forcing air up through conduit 49.
  • Primary air is that air not normally available in the combustion zone and which must be induced to flow from surrounding areas or forced from other sources to such combustion zone.
  • the air may be generated by blowers in the lower portion of air conduit 49 or may be introduced into air conduit 49 by one or more transporting pipes 50 connecting air conduit 49 to an air source. As the air passes upward through air conduit 49, it passes up and around conduit 11 and channels 14 and into the combustion area. While a shroud 42 is provided around the combustion tip, this shroud is in reality merely an expanded diameter extension of air conduit 49. If desired, this shroud 42 may be separated from air conduit 49 in such manner as to permit the induction of atmospheric air under the shroud as a complement to the air passing upward through air conduit 49.
  • a flare stack combustion tip comprising a centrally disposed gas conduit having an opening in the lower end thereof for communication with a flare stack and the upper end thereof being at least partially closed, a pluralit of spaced apart gas conducting channels extending outward from said gas conduit and in open communication along one end thereof with said gas conduit, and a gas emission orifice in an upper segment of each of said gas conducting channels and extending substantially the entire length of said upper segment, said gas emission orifices being disposed radially with respect to the axis of said gas conduit and being partially restricted by means of a lip section extending the entire length thereof from a wall of said gas conducting channel.
  • gas conduit is comprised of a lower substantially cylindrical section and an upper conical shaped section from which said gas conducting channels extend.
  • a shroud is coaxially aligned with said gas conduit and extends downward from adjacent the upper edge of said gas conducting channels to thereby at least partially surround said gas conduit and said gas conducting channels.
  • a pressure control plate is rotatably connected to a wall of each of said gas conducting channels such as to extend across said gas emission orifices and restrict gas flow therethrough, said pressure control plates rotatably responsive to gas flows within said gas conducting channels.
  • said gas conduit includes in a lower portion thereof a damper comprising a plurality of generally triangular 10 shaped gates hinged to radially disposed headers and rotatably responsive to gas pressures from either side thereof.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Incineration Of Waste (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
US754135*A 1968-07-25 1968-07-22 Flare stack combustion tip Expired - Lifetime US3547567A (en)

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US75413568A 1968-07-25 1968-07-25

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BE (1) BE736587A (xx)
DE (1) DE1937922B2 (xx)
FR (1) FR2013702A1 (xx)
GB (1) GB1272963A (xx)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797991A (en) * 1973-01-08 1974-03-19 Combustion Unltd Inc Flare burner
US3994671A (en) * 1975-03-14 1976-11-30 Combustion Unlimited Incorporated Flare gas burner
US3995986A (en) * 1975-03-14 1976-12-07 Straitz John F Iii Flare gas burner
US4052142A (en) * 1976-05-17 1977-10-04 John Zink Company Air velocity burner
US4128389A (en) * 1977-08-22 1978-12-05 Combustion Unlimited Incorporated Flare stack gas burner
US4538982A (en) * 1982-04-05 1985-09-03 Mcgill Incorporated Flare gas combustion apparatus
US4548577A (en) * 1983-04-18 1985-10-22 Mcgill Incorporated Linear combustion apparatus for atmospheric burning of flare gases
US4643669A (en) * 1985-08-26 1987-02-17 Peabody Engineering Corporation Smokeless flare gas burner
US5865613A (en) * 1996-11-05 1999-02-02 Rajewski; Robert Carl Steam over air flare tip
US20070224564A1 (en) * 2006-03-27 2007-09-27 Jianhui Hong Flare apparatus
EP1870636A1 (de) * 2005-04-08 2007-12-26 Leonid Nikolaevich Parfenov Rauchfreies verfahren zum verbrennen von gasen in einer fackelanlage
US8629313B2 (en) 2010-07-15 2014-01-14 John Zink Company, Llc Hybrid flare apparatus and method
US20160076765A1 (en) * 2014-09-11 2016-03-17 Joachim Goldbach Method for combusting exhaust gas with oxygen feed line
US9416966B2 (en) 2014-07-25 2016-08-16 Flame Commander Corp. Venturi nozzle for a gas combustor
RU2604245C1 (ru) * 2015-10-13 2016-12-10 Публичное акционерное общество "Татнефть" им. В.Д. Шашина Оголовок факельной трубы
CN105026837B (zh) * 2013-01-18 2017-03-15 斯蒂福斯公司 具有旋转阻尼器的减压阀
US9970658B2 (en) 2013-01-18 2018-05-15 Steffes Corporation Pressure relief valve with rotating damper
US20210048194A1 (en) * 2019-08-14 2021-02-18 Zeeco, Inc. Low consumption assisted flare apparatus and method
US11029026B2 (en) 2019-02-20 2021-06-08 Moneyhun Equipment Sales & Service Co. Flare tip assembly

Families Citing this family (2)

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US3954385A (en) * 1975-02-24 1976-05-04 John Zink Company Air powered smokeless flare
GB8307687D0 (en) * 1983-03-19 1983-04-27 Gkn Birwelco Ltd Flares

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US2537091A (en) * 1945-10-20 1951-01-09 Universal Oil Prod Co Waste gas burner
US2734562A (en) * 1956-02-14 Albert haberle
US2761496A (en) * 1951-06-29 1956-09-04 Exxon Research Engineering Co Flare stack apparatus for burning waste gases
FR1226272A (fr) * 1959-06-03 1960-07-11 Cie D Etudes Tech Et Installat Installation pour la mise en combustion de tous gaz combustibles, notamment de gaz à faible pouvoir calorifique tels que des gaz de hauts-fourneaux
US3289729A (en) * 1964-12-08 1966-12-06 Zink Co John Apparatus for limiting entry of air into flare stack
US3429645A (en) * 1967-09-20 1969-02-25 Zink Co John Flare stack burner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734562A (en) * 1956-02-14 Albert haberle
US2537091A (en) * 1945-10-20 1951-01-09 Universal Oil Prod Co Waste gas burner
US2761496A (en) * 1951-06-29 1956-09-04 Exxon Research Engineering Co Flare stack apparatus for burning waste gases
FR1226272A (fr) * 1959-06-03 1960-07-11 Cie D Etudes Tech Et Installat Installation pour la mise en combustion de tous gaz combustibles, notamment de gaz à faible pouvoir calorifique tels que des gaz de hauts-fourneaux
US3289729A (en) * 1964-12-08 1966-12-06 Zink Co John Apparatus for limiting entry of air into flare stack
US3429645A (en) * 1967-09-20 1969-02-25 Zink Co John Flare stack burner

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797991A (en) * 1973-01-08 1974-03-19 Combustion Unltd Inc Flare burner
US3994671A (en) * 1975-03-14 1976-11-30 Combustion Unlimited Incorporated Flare gas burner
US3995986A (en) * 1975-03-14 1976-12-07 Straitz John F Iii Flare gas burner
US4052142A (en) * 1976-05-17 1977-10-04 John Zink Company Air velocity burner
US4128389A (en) * 1977-08-22 1978-12-05 Combustion Unlimited Incorporated Flare stack gas burner
US4538982A (en) * 1982-04-05 1985-09-03 Mcgill Incorporated Flare gas combustion apparatus
US4548577A (en) * 1983-04-18 1985-10-22 Mcgill Incorporated Linear combustion apparatus for atmospheric burning of flare gases
US4643669A (en) * 1985-08-26 1987-02-17 Peabody Engineering Corporation Smokeless flare gas burner
US5865613A (en) * 1996-11-05 1999-02-02 Rajewski; Robert Carl Steam over air flare tip
EP1870636A1 (de) * 2005-04-08 2007-12-26 Leonid Nikolaevich Parfenov Rauchfreies verfahren zum verbrennen von gasen in einer fackelanlage
EP1870636A4 (de) * 2005-04-08 2009-04-29 Leonid Nikolaevich Parfenov Rauchfreies verfahren zum verbrennen von gasen in einer fackelanlage
US20070224564A1 (en) * 2006-03-27 2007-09-27 Jianhui Hong Flare apparatus
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Also Published As

Publication number Publication date
FR2013702A1 (xx) 1970-04-03
BE736587A (xx) 1969-12-31
DE1937922B2 (de) 1975-05-07
DE1937922A1 (de) 1970-01-29
GB1272963A (en) 1972-05-03

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