EP0826925B1 - Procédé et dispositif pour arrêter un brûleur - Google Patents

Procédé et dispositif pour arrêter un brûleur Download PDF

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Publication number
EP0826925B1
EP0826925B1 EP97115127A EP97115127A EP0826925B1 EP 0826925 B1 EP0826925 B1 EP 0826925B1 EP 97115127 A EP97115127 A EP 97115127A EP 97115127 A EP97115127 A EP 97115127A EP 0826925 B1 EP0826925 B1 EP 0826925B1
Authority
EP
European Patent Office
Prior art keywords
burner
inert
gas
fuel gas
supply line
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
EP97115127A
Other languages
German (de)
English (en)
Other versions
EP0826925A3 (fr
EP0826925A2 (fr
Inventor
Erich Dipl.-Ing. Czajka
Holger Dipl.-Ing. Schöne
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.)
Linde Gas AG
Original Assignee
Linde Gas AG
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 Linde Gas AG filed Critical Linde Gas AG
Priority to SI9730305T priority Critical patent/SI0826925T1/xx
Publication of EP0826925A2 publication Critical patent/EP0826925A2/fr
Publication of EP0826925A3 publication Critical patent/EP0826925A3/fr
Application granted granted Critical
Publication of EP0826925B1 publication Critical patent/EP0826925B1/fr
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
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/30—Purging

Definitions

  • the invention relates to a method for switching off a burner with at least a supply line for a fuel gas / oxygen mixture.
  • the invention relates furthermore a device for carrying out such a method, consisting of several burners, each with at least one supply line for one Fuel gas / oxygen mixture, at least one control and / or in the supply lines Shut-off valve is provided.
  • a burner with a fuel gas / oxygen mixture in usually oxygen and a fuel gas via two separate supply lines, e.g. Acetylene, fed to a gas mixing station and in the desired Ratio mixed.
  • the fuel gas / oxygen mixture thus obtained becomes then fed to the burner via a supply line.
  • the shutdown a burner is now usually done by closing the valves in the Supply lines upstream of the mixing station.
  • flame retractions often occur in the burner, which too Hazards to operating personnel and damage to the burner device or plant can lead.
  • DE-OS 38 25 721 describes a method and a device for input and / or Shutdown of a burner known. This is done with a check valve equipped supply lines downstream of the check valves an inert or. Purge gas or air introduced such that the inert or purge gas has a higher Pressure as the combustion gas supplied in the respective supply line has, the inert or purge gas flow through the when the burner is switched off Burner is stopped after the flame goes out.
  • Another method for switching off a burner is from the US-A-2 938 577.
  • the fuel gas line is first closed by means of a valve while the supply line for the oxygen remains open.
  • the supply line for the fuel gas is meanwhile Nitrogen or another non-flammable gas is flushed and cleaned so that the supply control system with a non-flammable or flammable Fills the gas mixture.
  • Supply line for the oxygen closed by means of a valve.
  • the disadvantage here, however, is that in the feed an inert or purge gas, all burners are switched off at the same time, so that these Device is also not suitable for multi-burner systems
  • the object of the present invention is to provide a method and an apparatus for Shutdown of a burner to indicate a safe shutdown with allows lower oxygen and / or fuel gas losses and also can be used in particular in multi-burner systems.
  • the interruption occurs simultaneously the supply of the fuel gas / oxygen mixture to the burner Inert or purge gas, by means of which the supply line and the burner are purged are fed. In this way, a safe shutdown of the burner without the danger of flame retreat into the burner.
  • Nitrogen or a nitrogen-containing gas is advantageously used as the inert or purge gas Gas mixture, especially air or compressed air, is used.
  • gas mixture especially air or compressed air
  • methods according to the invention can all be used in combustion processes inert gases are used, e.g. also all noble gases.
  • inert gases e.g. also all noble gases.
  • the usage of (compressed) air or nitrogen is for reasons of cost and also suitable properties particularly advantageous.
  • the invention further relates to a device for performing the Method for switching off a burner, the device comprising several Burners each with at least one supply line for a fuel gas / oxygen mixture, and wherein in the supply line at least one control and / or Shut-off valve is provided.
  • the invention opens into the supply lines for a fuel gas / oxygen mixture downstream of the control and / or shut-off valve at least one supply line for an inert or purge gas and the Supply line for an inert or purge gas has at least one control and / or Shut-off valve.
  • control and / or shut-off valve also includes a Understand valve that performs both functions.
  • Oxygen is sent to a mixing station c via line 1 and valve a and via line 2 and valve b fuel gas, e.g. Acetylene supplied.
  • fuel gas e.g. Acetylene supplied.
  • the one formed in the mixing station c Fuel gas / oxygen mixture is then via lines 3 and 3 ', 3 "or 3 "'and the valves d', d" and d “'fed to the burners 5', 5" and 5 "'
  • inert or purge gas supply lines 4 and 4 ', 4 "or 4"' respective fuel gas / oxygen mixture supply lines 3 ', 3 "or 3"' and thus fed to the burners 5 ', 5 "or 5"' 'of inert or purge gas.
  • the inert or Purge gas supply lines 4 ', 4 "and 4"' are during the burning phases of the valves e ', e "or e' '' closed.
  • the valve d' is closed and thus the supply of fuel gas / oxygen mixture via lines 3 and 3 'in the Burner 5 'interrupted. Simultaneously with the closing of the valve d ', the valve e' opened in the inert or purge gas supply line 4 ', so that now only Inert or purge gas flows from the supply line 4 'into the burner 5' and this rinses.
  • Such check valves are used in addition, if the shut-off valve is not completely closed or if it is not Sufficiently quick closing of a valve, the inflow of inert or purge gas in the fuel gas / oxygen mixture supply lines of the other To avoid burners.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)

Claims (3)

  1. Procédé pour le débranchement d'un brûleur (5, 5', 5'') comprenant au moins un conduit d'alimentation pour un mélange (3, 3', 3'', 3'') de gaz combustible/oxygène, caractérisé en ce qu'un gaz inerte ou un gaz de balàyage est apporté au brûleur (5, 5', 5'') en même temps que l'on interrompt l'apport de mélange de gaz combustible/oxygène au brûleur (5, 5', 5'').
  2. Procédé selon la revendication 1, caractérisé en ce que comme gaz inerte ou de balayage on utilise de l'azote ou un mélange de gaz contenant de l'azote, en particulier de l'air ou de l'air comprimé.
  3. Dispositif en vue de la mise en oeuvre du procédé selon l'une des revendications 1 à 2, constitué de (plusieurs brûleurs (5, 5', 5'') comportant chacun au moins un conduit d'alimentation pour un mélange (3', 3'', 3'''), de gaz combustible/oxygène, au moins une vanne de régulation et/ou de fermeture (d', d", d''') étant prévue dans chaque conduit d'alimentation, caractérisé en ce qu'au moins un conduit d'alimentation en gaz inerte et/ou en gaz de balayage (4', 4'', 4''') débouche dans le ou les conduits d'alimentation en mélange (3', 3'', 3''') de gaz combustible/oxygène en aval de la vanne de régulation et/ou de fermeture (d', d'', d'''), et le conduit d'alimentation en gaz inerte ou en gaz de balayage (4', 4'', 4''') présente au moins une vanne de régulation et/ou de fermeture (e', e'', e''').
EP97115127A 1996-09-02 1997-09-01 Procédé et dispositif pour arrêter un brûleur Expired - Lifetime EP0826925B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730305T SI0826925T1 (en) 1996-09-02 1997-09-01 Process and device for shutting off a burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635576A DE19635576A1 (de) 1996-09-02 1996-09-02 Verfahren und Vorrichtung zum Abschalten eines Brenners
DE19635576 1996-09-02

Publications (3)

Publication Number Publication Date
EP0826925A2 EP0826925A2 (fr) 1998-03-04
EP0826925A3 EP0826925A3 (fr) 1999-02-17
EP0826925B1 true EP0826925B1 (fr) 2001-12-19

Family

ID=7804398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115127A Expired - Lifetime EP0826925B1 (fr) 1996-09-02 1997-09-01 Procédé et dispositif pour arrêter un brûleur

Country Status (5)

Country Link
EP (1) EP0826925B1 (fr)
AT (1) ATE211240T1 (fr)
CZ (1) CZ291724B6 (fr)
DE (2) DE19635576A1 (fr)
SI (1) SI0826925T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133058A1 (de) * 2001-07-07 2003-01-23 Messer Griesheim Gmbh Verfahren zum Zerstäuben und Verbrennen von Brennstoffen mittels Sauerstoff und Brenner hierzu
CN102514766B (zh) * 2011-12-26 2013-06-05 宁波和利氢能源科技有限公司 一种用于安瓿灌封的氢氧焰安全熄火装置
DE102015226549B8 (de) * 2015-11-23 2017-03-23 Gvp Gesellschaft Zur Vermarktung Der Porenbrennertechnik Mbh Hybridheizmodul
CN106051747A (zh) * 2016-07-27 2016-10-26 北京神雾环境能源科技集团股份有限公司 一种蓄热式富氧燃烧方法及其装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938577A (en) 1956-10-04 1960-05-31 Air Reduction Method and apparatus for preventing backfire in gas burner systems
US3558249A (en) * 1969-05-13 1971-01-26 Electric Furnace Co Method and application for preventing flashback in premix gas burner systems
DE3825721C2 (de) 1988-07-28 1997-07-10 Linde Ag Verfahren und Vorrichtung zur Ein- und/oder Abschaltung eines Brenners

Also Published As

Publication number Publication date
DE19635576A1 (de) 1998-03-05
ATE211240T1 (de) 2002-01-15
SI0826925T1 (en) 2002-10-31
CZ291724B6 (cs) 2003-05-14
EP0826925A3 (fr) 1999-02-17
DE59705854D1 (de) 2002-01-31
EP0826925A2 (fr) 1998-03-04
CZ273697A3 (cs) 1998-04-15

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