EP1979677A1 - Amelioration de la longevite et de la performance de nez de torche - Google Patents

Amelioration de la longevite et de la performance de nez de torche

Info

Publication number
EP1979677A1
EP1979677A1 EP07704896A EP07704896A EP1979677A1 EP 1979677 A1 EP1979677 A1 EP 1979677A1 EP 07704896 A EP07704896 A EP 07704896A EP 07704896 A EP07704896 A EP 07704896A EP 1979677 A1 EP1979677 A1 EP 1979677A1
Authority
EP
European Patent Office
Prior art keywords
coating
low
flare tip
flare
mils
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.)
Granted
Application number
EP07704896A
Other languages
German (de)
English (en)
Other versions
EP1979677B1 (fr
Inventor
Naiping Zhu
Louis Karambis
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.)
Fosbel Intellectual Ltd
Original Assignee
Fosbel Intellectual Ltd
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 Fosbel Intellectual Ltd filed Critical Fosbel Intellectual Ltd
Priority to PL07704896T priority Critical patent/PL1979677T3/pl
Publication of EP1979677A1 publication Critical patent/EP1979677A1/fr
Application granted granted Critical
Publication of EP1979677B1 publication Critical patent/EP1979677B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05004—Special materials for walls or lining

Definitions

  • the present invention relates generally to flare tips employed in the petrochemical industry for burning off-gases associated with the production and/or refining of petroleum-based products.
  • the present invention relates to flare tips coated with a low emissivity (low-E) material so as to improve the longevity and performance thereof.
  • low-E low emissivity
  • Flare tips are notoriously well known in the petroleum industry and are used typically to burn off-gases associated with petroleum production and/or refining. Flare tips are therefore exposed to direct flame during their service life which can of course be quite damaging. As a result, flare tips need to periodically be taken out of service and refurbished which adds to production costs.
  • the present invention is directed to applying a low emissivity (low-E) coating onto flare tips to achieve longer flare tip service life, improved flare tip structural integrity and/or a more stable flame pattern under a wide range of operating conditions.
  • low-E coatings may be applied to the flare tip burner as well as associated internal and/or external component surfaces to reduce direct flame radiation and also conductive heat transfer.
  • the low-E coating material has an emissivity of less than about 0.80, preferably between about 0.20 to about 0.78.
  • the coating thickness of the low-E material is preferably between about 1 mil to about 25 mils, and more preferably between about 2 mils to about 8 mils.
  • Coating densities of the low-E material in the coating will preferably be at least about 65%, more preferably between about 80% to about 100%.
  • the improved flare tips in accordance with the present invention therefore result in significantly less deformation and distortion of the flare tip burner as well as its associated internal and/or external components thereby prolonging its useful service life.
  • the low-E ceramic coatings of the present invention will also provide enhanced corrosion and oxidation resistance and further improve the longevity of the flare tip burner as well as its associated internal and/or external components.
  • FIGURE 1 is a perspective view of an exemplary flare tip in accordance with the present invention.
  • a low emissivity (low-E) coating material is applied to the flare tip burner as well as associated internal and/or external component surfaces to reduce direct flame radiation and also conductive heat transfer.
  • An exemplary flare tip 10 is depicted in accompanying FIGURE 1 as having a flare barrel 12 which terminates in a baffled burner element 14.
  • Flame stabilization tabs 16 are provided at circumferentially spaced- apart locations about the burner element 14 so as to ensure stable and high efficiency flaring through a range of gas flows.
  • all exterior and interior surfaces of the flare tip 10 which may have exposure to the flame and its attendant radiation are coated with a low-E ceramic material.
  • Coated structures therefore include, for example, at least an upper portion of the flare barrel 12, the burner element 14, and/or the stabilization tabs 16.
  • the emissivity (E) of a material is meant to refer to a unitless number measured on a scale between zero (total energy reflection) and 1.0 (a perfect “black body” capable of total energy absorption and re-radiation).
  • a relatively low emissivity (low-E) is meant to refer to coating materials having an emissivity of less than about 0.80, and especially materials having an emissivity of between about 0.20 to about 0.78.
  • Virtually any commercially available low-E coating material may be employed satisfactorily in the practice of the present invention.
  • one presently preferred low-E ceramic coating includes CERAK M700 ceramic coating commercially available form Cetek, Ltd. of Berea, Ohio, having an emissivity of about 0.75.
  • Coating thicknesses of the low-E ceramic coating material are not critical but will vary in dependence upon the desired resulting thermal flux and/or the particular material forming the coating. Thus, coating thicknesses of from about 1 mil to about 25 mils, usually about 2 mils to about 8 mils may be appropriate. Coating densities will typically be greater than about 65%, more specifically 80% or greater. Coating densities will typically be greater than about 65%, more specifically 80% or greater, including up to 100%. By “coating density” is meant the amount (wt.%) of the low-E ceramic coating material that is present in the coating.
  • the low-E coating material may be applied to flare tip components in any conventional manner.
  • the low-E coating material may thus be applied to the flare tip components via any pressurized spray system while the flare tip is being manufactured or while off-line (i.e., is not at its operational temperatures) during refurbishment.
  • a high temprerature low-emissivity coating (CETEK M720 high- temperature ceramic coating having an emissivity value of about 0.75) was applied to a flare tip manufactured by Callidus Technologies LLC.
  • the low-E coating utilized a non-toxic, non-flammable carrier, with a high temperature ceramic binder and was sprayed onto the flare tip structures to be exposed to direct flame during operation by conventional spray equipment.
  • the sprayed coating was thereafter allowed to dry in air for 4 hours and cured at 1500 0 F. After curing, the coating on the flare tip surfaces exhibited a thickness of about 3 mils at a coating density of the low-E material of about 100%.
  • the coating was intended to provide excellent thermal barrier protection, oxidation and corrosion resistance to metallic substrates at elevated temperatures up to 2400 0 F, as well as a reduction in warpage, stress corrosion cracking, and alloy leaching.
  • the coating also was intended to provide uniform heat distribution for enclosed flare systems.
  • the flare tip with the low-E coating material applied thereto was placed into service to burn off-gases. After approximately six months of continuous operation, the condition of the coated flare tip surfaces was visually inspected and determined to be satisfactory indicating that the coating material provided protection against the direct flame during flare tip operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Incineration Of Waste (AREA)

Abstract

Selon la présente invention, des revêtements à faible émissivité sont appliqués sur des surfaces de nez de torche en vue de prolonger leur durée de vie, d’améliorer leur intégrité structurelle et/ou d’obtenir un type de flamme plus stable, dans une large gamme de conditions de fonctionnement. Selon certains modes de réalisation de la présente invention, les revêtements à faible émissivité peuvent s’appliquer sur le brûleur du nez de torche ainsi que sur des surfaces de composants internes et/ou externes associés afin de réduire la rayonnement direct de la flamme ainsi que le transfert thermique par conduction. Le matériau de revêtement à faible émissivité présente de préférence une émissivité inférieure à environ 0,80, et plus idéalement comprise entre environ 0,20 et 0,78. L’épaisseur du revêtement du matériau à faible émissivité est comprise de préférence entre environ 1 millimètre et 25 millimètres, et plus idéalement encore entre environ 2 et 8 millimètress. Les densités de revêtement du matériau à faible émissivité présentes dans le revêtement seront de préférence inférieures à environ 65 %, plus idéalement encore comprises entre environ 80 % et 100 %.
EP07704896A 2006-01-27 2007-01-12 Amelioration de la longevite et de la performance de nez de torche Not-in-force EP1979677B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07704896T PL1979677T3 (pl) 2006-01-27 2007-01-12 Ulepszenia trwałości i działania końcówek pochodni

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76253106P 2006-01-27 2006-01-27
PCT/GB2007/000068 WO2007085793A1 (fr) 2006-01-27 2007-01-12 Amelioration de la longevite et de la performance de nez de torche

Publications (2)

Publication Number Publication Date
EP1979677A1 true EP1979677A1 (fr) 2008-10-15
EP1979677B1 EP1979677B1 (fr) 2012-10-10

Family

ID=38121740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07704896A Not-in-force EP1979677B1 (fr) 2006-01-27 2007-01-12 Amelioration de la longevite et de la performance de nez de torche

Country Status (16)

Country Link
US (1) US20070238058A1 (fr)
EP (1) EP1979677B1 (fr)
JP (1) JP5066103B2 (fr)
KR (1) KR20080098383A (fr)
CN (1) CN101375102A (fr)
AR (1) AR059208A1 (fr)
AU (1) AU2007209180B2 (fr)
BR (1) BRPI0707271A2 (fr)
CA (1) CA2637943A1 (fr)
DK (1) DK1979677T3 (fr)
ES (1) ES2396997T3 (fr)
PL (1) PL1979677T3 (fr)
PT (1) PT1979677E (fr)
RU (1) RU2433346C2 (fr)
WO (1) WO2007085793A1 (fr)
ZA (1) ZA200806553B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100081100A1 (en) * 2008-10-01 2010-04-01 Wessex Incorporated Burner Tips
US20130168470A1 (en) * 2008-10-01 2013-07-04 John W. Olver Burner Tips
GB2475541A (en) * 2009-11-23 2011-05-25 Hamworthy Combustion Eng Ltd Remote monitoring of combustion of flare stack pilot burners by sampling gasses from the burner
JP5872346B2 (ja) * 2012-03-26 2016-03-01 中国電力株式会社 パイロットバーナの保護装置
US9816705B2 (en) 2014-11-18 2017-11-14 Honeywell International Inc. Flare burner for a combustible gas
US10598375B2 (en) 2016-11-01 2020-03-24 Honeywell International Inc. Asymmetrical and offset flare tip for flare burners

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Also Published As

Publication number Publication date
KR20080098383A (ko) 2008-11-07
AU2007209180B2 (en) 2011-11-24
PL1979677T3 (pl) 2013-02-28
ZA200806553B (en) 2009-11-25
AR059208A1 (es) 2008-03-19
JP2009524795A (ja) 2009-07-02
AU2007209180A1 (en) 2007-08-02
RU2008134888A (ru) 2010-03-10
CN101375102A (zh) 2009-02-25
ES2396997T3 (es) 2013-03-01
PT1979677E (pt) 2013-01-07
US20070238058A1 (en) 2007-10-11
DK1979677T3 (da) 2013-01-14
RU2433346C2 (ru) 2011-11-10
EP1979677B1 (fr) 2012-10-10
WO2007085793A1 (fr) 2007-08-02
BRPI0707271A2 (pt) 2011-04-26
JP5066103B2 (ja) 2012-11-07
CA2637943A1 (fr) 2007-08-02

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