US3915622A - Flare - Google Patents

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Publication number
US3915622A
US3915622A US504993A US50499374A US3915622A US 3915622 A US3915622 A US 3915622A US 504993 A US504993 A US 504993A US 50499374 A US50499374 A US 50499374A US 3915622 A US3915622 A US 3915622A
Authority
US
United States
Prior art keywords
bellows
flarestack
feed line
burner tip
slot
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
Application number
US504993A
Other languages
English (en)
Inventor
Denis Henry Desty
John Lionel Thomas
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.)
BP PLC
Original Assignee
BP PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BP PLC filed Critical BP PLC
Application granted granted Critical
Publication of US3915622A publication Critical patent/US3915622A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/07—Coanda

Definitions

  • Appl 101504393 A flarestack burner tip has a Coanda body placed across the outlet of a high pressure gas line to form an [30] Foreign Application Priority Data annular slot from which the gas emerges and flows Sept 18 1973 United Kingdomunnnmnu over the Coanda surface.
  • the feed line is a pipe consisting of fixed and moveable parts, the moveable part partially enclosing the fixed part so as to form an an- [52] US. Cl. 431/284; 431/202; 431/89;
  • the bellows may also be attached between the fixed and moveable pipe portions.
  • This invention relates to a flare for disposing of waste combustible gas, and in particular it relates to the'disposal of waste petroleum gas.
  • US. Pat. No. 3,833,337 discloses a flarestack burner tip comprising a feed line for a high pressure gas and a Coanda body positioned across the outlet of the high pressure gas line, the curved director surface of the Coanda body initiating flow of gas and air along the surface of the Coanda body, there being a self-adjusting slot between the Coanda surface and the high pressure gas line.
  • the self-adjusting slot may be actuated by a bellows assembly.
  • a new formof bellows assembly has now been devised which has the effect of improving the fatigue life of the bellows and which gives relatively better external protection to the bellows.
  • self adjusting slot we mean a slot which adjusts itself automatically to the flow rate of high pressure gas so that the pressure of the high pressure gas remains approximately constant on emerging from the slot.
  • a flarestack burner tip comprising a feed line for a high pressure gas and a Coanda body positioned across the outlet of the high pressure gas so as to form a slot, the external wall of the feed line having a moveable portion adjacent to the Coanda body and a fixed portion, the moveable portion being substantially co-axial with and overlapping at least a part of the fixed portion so as to form a space there between, there being a bellows fitted in said space, the end of the bellows farthest from the Coanda body being attached to the moveable portion and the end of the bellows nearest to the Coanda body being attached to the fixed portion of the feed line.
  • the flarestack burner tip has a bellows, the external surface of which responds to the high pressure gas supply and the internal surface of which is open to the surrounding atmosphere.
  • the bellows has some protection from say external mechanical damage by virtue of being enclosed between the fixed and moveable portion of pipe. Further as the bellows is externally pressurised the bellows has a reduced tendency to squirm or distort thus improving fatigue life of the bellows. When the bellows is in a no-load condition it is desirable that the slot is open.
  • the moveable portion of the feed line preferably partially encloses the fixed portion of the feed line to form the space.
  • the said space between the moveable and fixed pipe portions will be annular.
  • the Coanda body has a curved director surface which, in use, is capable of entraining surrounding air into the high pressure fuel gas stream.
  • the high pressure gas may be a fuel gas or it may be steam.
  • the Coanda body Preferably it emerges from the feed line at a pressure in the range 70 to 300 kN/m If the high pressure gas is fuel gas then preferably the Coanda body includes an internal passage adapted to supply fuel gas at a low pressure into the flow of high pressure gas and air.
  • the Coanda body must contain such a passageway.
  • the moveable portion of the high pressure fuel gas feed line is attached to the fixed portion by meansof a spring or springs substantially parallel to the feed line and acting in series with the bellows.
  • the fixed portion of the feed line has a deflector plate inclined towards the slot so as to improve the flow of high pressure fuel gas towards'the slot.
  • the flarestack burner tip is capable of being used for both vertical and horizontal firing. Horizontal firing may be carried out in a trench so as to reduce undesirable luminosity.
  • FIG. 1 shows a vertical cross-section of the flarestack burner tip incorporating a bellows device according to
  • FIG. 2 shows the bellows device of the tip in which a deflector plate is incorporated.
  • the flarestack tip comprises a Coanda body 1 and a line 2 for the supply of high pressure fuel gas.
  • a slot 3 opens up between the body 1 and the line 2.
  • the body 1 has a director surface comprising a deflector portion 4 which turns the direction of the high pressure gas from horizontal to vertical and leads to a tapered portion which transmits the flow from the deflector portion 4 to the top of the body 1.
  • the shape of the deflector portion 4 is most conveniently specified as the surface of revolution formed by the rotation of a quadrant of a circle about the longitudinal axis of the Coanda body, the curved section of the quadrant being tangential to the slot.
  • the distance between the axis of rotation and the centre of the quadrant is equal of the radius of the quadrant.
  • the bellows-spring arrangement which governs the opening of the slot is attached to a surround member I 5 which encloses the line 2.
  • the upper end 6 of the bellows is attached rigidly to member 5 whilst the lower end 7 is attached to a further surround member 8.
  • This further member 8 is attached at one end to a spring 9, the opposite end of the spring 9 being fixed to the surround member 5.
  • the upper part of the member 8 in conjunction with the deflector portion 4 forms the slot 3.
  • a flarestack burner tip comprising a feed line for a high pressure gas and a Coanda body positioned across the outlet of the high pressure gas so as to form a slot, the external wall of the feed line having a moveable portion adjacent to the Coanda body and a fixed portion, the moveable portion being substantially coaxial with and overlapping at least a part of the fixed portion so as to form a space there-between; there being a bellows fitted in said space, the end of the bel lows farthest from the Coanda body being attached to the moveable portion and the end of the bellows nearest to the Coanda body being attached to the fixed portion of the feed line.
  • a flarestack burner tip according to claim 1 in which the moveable portion of the feed line is exterior to the fixed portion.
  • a flarestack burner tip according to any of claim 1 in which the moveable portion of the feed line is atttached to the fixed portion by means of a spring or springs acting in series with the bellows.
  • a flarestack burner tip according to any of claim 2 in which the fixed portion of the feed line has an internal deflector plate inclined towards the slot, the plate being adapted to improve the flow of a high pressure gas towards the slot.
  • a flarestack burner tip in which the shape of the deflector portion of the Coanda body is the surface of revolution formed by the rotation of a quadrant of a circle about the longitudinal axis of the Coanda body, the curved section of the quadrant being tangential to the slot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Incineration Of Waste (AREA)
  • Feeding And Controlling Fuel (AREA)
US504993A 1973-09-18 1974-09-11 Flare Expired - Lifetime US3915622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4364973A GB1460576A (en) 1973-09-18 1973-09-18 Flare stack burner tip

Publications (1)

Publication Number Publication Date
US3915622A true US3915622A (en) 1975-10-28

Family

ID=10429701

Family Applications (1)

Application Number Title Priority Date Filing Date
US504993A Expired - Lifetime US3915622A (en) 1973-09-18 1974-09-11 Flare

Country Status (11)

Country Link
US (1) US3915622A (xx)
JP (1) JPS572971B2 (xx)
BE (1) BE820070R (xx)
CA (1) CA1022055A (xx)
DE (1) DE2442953C2 (xx)
FR (1) FR2244131B2 (xx)
GB (1) GB1460576A (xx)
IT (1) IT1047049B (xx)
NL (1) NL174182C (xx)
NO (1) NO136263C (xx)
SE (1) SE400360B (xx)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021189A (en) * 1975-01-16 1977-05-03 Porta-Test Manufacturing Ltd. Gas burner
US4099908A (en) * 1976-08-13 1978-07-11 Martin Josef Beckmann Low pressure gas burner
US4336017A (en) * 1977-01-28 1982-06-22 The British Petroleum Company Limited Flare with inwardly directed Coanda nozzle
US4344751A (en) * 1979-03-24 1982-08-17 The British Petroleum Company Limited Flares
WO1983003657A1 (en) * 1982-04-05 1983-10-27 Mc Gill Inc Flare gas combustion apparatus
US4548576A (en) * 1978-08-08 1985-10-22 British Petroleum Company Flame stabilizer
US4634372A (en) * 1984-03-02 1987-01-06 The British Petroleum Company P.L.C. Flare
US20040110105A1 (en) * 2002-12-04 2004-06-10 Rajewski Robert C. Flare stack operating on coanda principle
US20070107436A1 (en) * 2005-11-14 2007-05-17 General Electric Company Premixing device for low emission combustion process
US20120298780A1 (en) * 2011-05-25 2012-11-29 Juergen Frick Check valve for spray nozzle and nozzle tube
US8337197B2 (en) * 2006-06-14 2012-12-25 John Zink Company, Llc Coanda gas burner apparatus and methods
CN103486588A (zh) * 2013-10-15 2014-01-01 江苏中圣高科技产业有限公司 音速自动可调火炬燃烧系统
WO2014027914A1 (en) * 2012-08-16 2014-02-20 Schlumberger, Canada Limited Regulation of a gas burner
US8967995B1 (en) * 2013-08-14 2015-03-03 Danny Edward Griffin High-efficiency dual flare system
US20150211735A1 (en) * 2012-08-16 2015-07-30 Schlumberger Technology Corporation Shrouded-coanda multiphase burner
CN105180182A (zh) * 2015-10-13 2015-12-23 中国石油化工股份有限公司 放喷气处理用狭长孔燃烧器
US9709266B2 (en) 2013-06-13 2017-07-18 Chris ALDRICH Combustor for discrete low and high pressure vapour combustion
US11029026B2 (en) 2019-02-20 2021-06-08 Moneyhun Equipment Sales & Service Co. Flare tip assembly

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474766U (xx) * 1977-11-04 1979-05-28
JPS5996680U (ja) * 1982-12-17 1984-06-30 三洋電機株式会社 販売機の扉装置
GB2136555B (en) * 1983-03-16 1986-06-11 Airoil Flaregas Ltd Improvements in flares
GB8307687D0 (en) * 1983-03-19 1983-04-27 Gkn Birwelco Ltd Flares
GB2136557B (en) * 1983-03-19 1986-05-21 Gkn Birwelco Ltd Flare for high velocity gas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833337A (en) * 1971-04-29 1974-09-03 British Petroleum Co Flarestacks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833337A (en) * 1971-04-29 1974-09-03 British Petroleum Co Flarestacks

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021189A (en) * 1975-01-16 1977-05-03 Porta-Test Manufacturing Ltd. Gas burner
US4099908A (en) * 1976-08-13 1978-07-11 Martin Josef Beckmann Low pressure gas burner
US4336017A (en) * 1977-01-28 1982-06-22 The British Petroleum Company Limited Flare with inwardly directed Coanda nozzle
US4548576A (en) * 1978-08-08 1985-10-22 British Petroleum Company Flame stabilizer
US4344751A (en) * 1979-03-24 1982-08-17 The British Petroleum Company Limited Flares
US4538982A (en) * 1982-04-05 1985-09-03 Mcgill Incorporated Flare gas combustion apparatus
WO1983003657A1 (en) * 1982-04-05 1983-10-27 Mc Gill Inc Flare gas combustion apparatus
US4634372A (en) * 1984-03-02 1987-01-06 The British Petroleum Company P.L.C. Flare
US20040110105A1 (en) * 2002-12-04 2004-06-10 Rajewski Robert C. Flare stack operating on coanda principle
US6960075B2 (en) 2002-12-04 2005-11-01 Rajewski Robert C Flare stack operating on Coanda principle
US20070107436A1 (en) * 2005-11-14 2007-05-17 General Electric Company Premixing device for low emission combustion process
US8266911B2 (en) * 2005-11-14 2012-09-18 General Electric Company Premixing device for low emission combustion process
EP2309183A3 (en) * 2006-06-14 2014-08-27 John Zink Company, L.L.C. Coanda gas burner apparatus and methods
US8337197B2 (en) * 2006-06-14 2012-12-25 John Zink Company, Llc Coanda gas burner apparatus and methods
US8568134B2 (en) 2006-06-14 2013-10-29 John Zink Company, Llc Coanda gas burner apparatus and methods
US20120298780A1 (en) * 2011-05-25 2012-11-29 Juergen Frick Check valve for spray nozzle and nozzle tube
US9377115B2 (en) * 2011-05-25 2016-06-28 Lechler Gmbh Check valve for spray nozzle and nozzle tube
WO2014027914A1 (en) * 2012-08-16 2014-02-20 Schlumberger, Canada Limited Regulation of a gas burner
US20150211735A1 (en) * 2012-08-16 2015-07-30 Schlumberger Technology Corporation Shrouded-coanda multiphase burner
US9709266B2 (en) 2013-06-13 2017-07-18 Chris ALDRICH Combustor for discrete low and high pressure vapour combustion
US8967995B1 (en) * 2013-08-14 2015-03-03 Danny Edward Griffin High-efficiency dual flare system
CN103486588A (zh) * 2013-10-15 2014-01-01 江苏中圣高科技产业有限公司 音速自动可调火炬燃烧系统
CN103486588B (zh) * 2013-10-15 2015-10-07 江苏中圣高科技产业有限公司 音速自动可调火炬燃烧系统
CN105180182A (zh) * 2015-10-13 2015-12-23 中国石油化工股份有限公司 放喷气处理用狭长孔燃烧器
US11029026B2 (en) 2019-02-20 2021-06-08 Moneyhun Equipment Sales & Service Co. Flare tip assembly
US11655978B2 (en) 2019-02-20 2023-05-23 Moneyhun Equipment Sales & Services Co. Flare tip assembly

Also Published As

Publication number Publication date
NL7411923A (nl) 1975-03-20
NO136263B (xx) 1977-05-02
AU7312474A (en) 1976-03-11
NO743345L (xx) 1975-04-14
FR2244131A2 (xx) 1975-04-11
SE7411668L (xx) 1975-03-19
DE2442953C2 (de) 1984-10-18
NL174182C (nl) 1984-05-01
NO136263C (no) 1977-08-10
FR2244131B2 (xx) 1982-06-18
DE2442953A1 (de) 1975-03-20
BE820070R (fr) 1975-03-18
GB1460576A (en) 1977-01-06
IT1047049B (it) 1980-09-10
JPS572971B2 (xx) 1982-01-19
CA1022055A (en) 1977-12-06
JPS5056771A (xx) 1975-05-17
SE400360B (sv) 1978-03-20

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