EP2014981A2 - Procédé et dispositif de traitement thermique de matières liquides ou gazeuses - Google Patents

Procédé et dispositif de traitement thermique de matières liquides ou gazeuses Download PDF

Info

Publication number
EP2014981A2
EP2014981A2 EP08104500A EP08104500A EP2014981A2 EP 2014981 A2 EP2014981 A2 EP 2014981A2 EP 08104500 A EP08104500 A EP 08104500A EP 08104500 A EP08104500 A EP 08104500A EP 2014981 A2 EP2014981 A2 EP 2014981A2
Authority
EP
European Patent Office
Prior art keywords
oxygen
fuel
combustion chamber
burner
supply
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.)
Withdrawn
Application number
EP08104500A
Other languages
German (de)
English (en)
Other versions
EP2014981A3 (fr
Inventor
Martin William Adendorff
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.)
Messer Group GmbH
Original Assignee
Messer Group GmbH
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 Messer Group GmbH filed Critical Messer Group GmbH
Publication of EP2014981A2 publication Critical patent/EP2014981A2/fr
Publication of EP2014981A3 publication Critical patent/EP2014981A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • 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
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air

Definitions

  • the invention relates to a method for treating liquid or gaseous substances in a combustion chamber, is entered in the fuel and an over-stoichiometric amount of oxygen in the combustion chamber. Furthermore, the invention relates to a burner assembly which is particularly suitable for carrying out such a method.
  • blow lances or burner arrangements are used for the thermal treatment of liquid or gaseous substances.
  • oxygen or another gas is introduced into the treatment room at high speed.
  • DE 100 59 440 A1 For example, a process for post-combustion of products with a fuel-oxygen lance is described in which fuel is burned with super-stoichometric amount of supplied oxygen and the combustion gas is introduced together with the unburned oxygen at supersonic velocity into the combustion chamber.
  • burners usually work only in a narrow flow range with a stable flame. This means that the burners must be operated with predetermined amounts of oxygen or fuel, regardless of the actual need, resulting in a considerable waste of energy and supplies.
  • Object of the present invention is therefore to provide a method and a burner assembly for flexible and energy-saving thermal treatment of gases or liquids using oxygen in a combustion chamber.
  • the object of the invention is thus achieved by a method for treating liquid or gaseous substances in a combustion chamber, is entered in the fuel and an over-stoichiometric amount of oxygen in the combustion chamber, wherein the fuel with a first partial flow of oxygen to form a Flame in the combustion chamber reacts and a second partial flow of oxygen is introduced with a flame enveloping the flow in the combustion chamber.
  • the enveloping flow stabilizes the flame in a wide range of different fuel flow rates.
  • a swirl flow is impressed on the second partial stream of oxygen introduced into the combustion chamber.
  • the swirl flow causes a particularly intensive mixing of the registered oxygen with the gas in the combustion chamber and thereby favors the implementation of the desired reaction.
  • An advantageous embodiment of the invention provides that the first partial flow of oxygen contains only a fuel underöchimetrische amount of oxygen and thus a portion of the fuel is burned with oxygen from the second partial flow.
  • the part of the oxygen which is not used for combustion in the combustion chamber is particularly preferred for CO afterburning or for combustion or cracking used by longer-chain hydrocarbons, such as those resulting from the combustion of plastics.
  • the burner assembly according to the invention comprises a fuel-oxygen burner opening into a combustion chamber when used as intended with at least one feed for gaseous or liquid fuel and at least one feed for oxygen, the fuel-oxygen burner within an oxygen lance for introducing oxygen into the combustion chamber Combustion chamber is arranged.
  • the fuel-oxygen burner By the fuel-oxygen burner, the formation of a flame in the combustion chamber takes place. At the same time, oxygen is additionally introduced through the oxygen lance into the combustion chamber and can there react with substances to be treated in the combustion chamber. At the same time, the oxygen introduced by the oxygen lance stabilizes the flame of the fuel-oxygen burner. As a result, the burner arrangement can be operated in a wide range of different fuel flow rates with a stable flame.
  • a preferred embodiment of the burner assembly according to the invention provides that the fuel-oxygen burner comprises a supply of primary fuel for covering a combustion base load and at least one supply of secondary fuel for covering a full or peak load. In this way, the amount of supplied fuel can be adapted to the respective requirements.
  • the burner assembly is constructed such that the oxygen lance, the at least one oxygen supply and the secondary fuel supply are coaxial with each other and disposed about the centrally located primary fuel supply.
  • the oxygen lance is equipped with a device for swirl generation.
  • swirl-producing outlet nozzles which are tangential or with a tangential component to the main direction of the oxygen flow of the Oxygen lance run into the combustion chamber and in this way impose a swirl flow to the oxygen emerging from the oxygen lance.
  • This makes it possible to apply a large volume of oxygen in the combustion chamber and thus to achieve intensive mixing.
  • the twisted oxygen jet leads to a further stabilization of the flame of the fuel-oxygen burner.
  • a preferred embodiment of the invention provides that the burner assembly according to the invention is integrated into an exhaust pipe.
  • the exhaust pipe is used in this case as a combustion chamber.
  • advantageous conditions can be made in the exhaust pipe for different treatments.
  • the burner can be used for CO afterburning.
  • Another application is the removal of organic contaminants from a treatment gas.
  • the burner according to the invention it is possible in a targeted manner to eliminate longer-chain hydrocarbons, such as may arise in the combustion of plastics, without attacking other constituents of the gas, such as CO.
  • FIG. 1 shows schematically the structure of a burner assembly according to the invention in longitudinal section.
  • the burner assembly 1 has an externally mixing fuel-oxygen burner 3 received within an oxygen lance 2, which opens into a combustion chamber 4.
  • the combustion chamber 4 is, for example, a furnace chamber or an exhaust pipe.
  • the fuel-oxygen burner 3 comprises a primary fuel supply 6 arranged along a central axis 5 of the burner arrangement 1, which is accommodated axially displaceably in the fuel-oxygen burner 3.
  • the primary fuel supply 6 also serves as a pilot burner for the fuel-oxygen burner 3.
  • the amount of fuel which is introduced during operation of the burner 3 via the primary fuel supply 6 is hereinafter referred to as "base-load fuel”.
  • base-load fuel Radially on the outside of the primary fuel supply 6, a secondary fuel supply 8 closes is fed by means of the additional, hereinafter referred to as "full load fuel" fuel.
  • a burner oxygen supply 9 is provided to the secondary fuel supply 8, in turn radially outside.
  • secondary fuel supply 8 and burner oxygen supply 9 are formed as tubes arranged concentrically to one another.
  • it is within the scope of the invention also conceivable to provide a plurality of mutually parallel feeds for secondary fuel and / or oxygen, which are arranged around the primary fuel supply 6 around.
  • coolant such as water or hot steam.
  • the oxygen lance 2 comprises a feed channel 10 which is connected to an oxygen feed line 12 and extends radially on the outside of the burner oxygen feed 9 and is provided with discharge nozzles 11 in the region of the mouth opening of the burner assembly 1.
  • the outlet nozzles 11 extend tangentially or with a tangential component to the longitudinal extension 5 of the burner assembly 1 and ensure that a swirling flow is imposed on the exiting oxygen gas stream. It is also possible, in addition, to equip the fuel feeds 6, 8 and / or the burner oxygen feed 9 with suitable swirl generators, in order to influence the geometry of the flame.
  • ignition gas is introduced into the primary fuel supply 6 and ignited with an electric igniter, not shown here.
  • a starting gas is usually a small amount of provided for the burner assembly 1 fuel, such as propane used.
  • the base load fuel can also be ignited directly when it is introduced.
  • the fuel is introduced via a fuel supply line 14 from a source not shown here and introduced via the primary fuel supply 6 into the combustion chamber 4.
  • Full load fuel up to a multiple, for example, twenty times the amount of base load fuel is introduced from a fuel supply line 16 in the fuel supply 8.
  • the oxygen is partly introduced via the oxygen supply 9 and partly via the oxygen lance 2 into the combustion chamber 4.
  • oxygen is taken from a source in a superstoichiometric relation to the amount of fuel supplied from a source and supplied on the one hand connected to the oxygen supply 9 oxygen supply line 15 and on the other hand, the oxygen supply line 12 of the oxygen lance 2.
  • the amount of oxygen supplied through the oxygen feed line 15 corresponds at most to the amount stoichiometrically required for combustion of the fuel.
  • the combustion of the fuel with this oxygen leads to the formation of a flame in front of the orifice of the fuel-oxygen burner 3 in the combustion chamber 4.
  • the introduced via the oxygen lance 2 in the combustion chamber 4 with a swirl flow oxygen partially reacts with the unburned fuel. Due to the swirl flow, an intensive mixing of the unburned oxygen with the liquid or gaseous substance present in the combustion chamber 4, whereby the reaction desired there is favored.
  • the oxygen emerging from the oxygen lance 2 envelops the flame of the fuel-oxygen burner and stabilizes it even with small amounts of fuel, in particular even when supplying only base-load fuel.
  • the swirl intensity is variably adjustable, or the oxygen lance 2 is designed such that the oxygen exiting from the supply openings 12 exits at critical speeds in all operating modes, so that the swirl intensity is also at different oxygen mass flows not changed.
  • control valves are provided, which are connected to a control and regulating device, by means of the introduction of fuel or oxygen quantities through the feeders 6,8,9 and by the oxygen lance 2 can be adjusted through. Also advantageous is a regulation of the fuel or oxygen quantities to be supplied as a function of measured parameters, such as the temperature in the Combustion chamber 4 or the concentration of a component in the atmosphere of the treatment room.
  • the burner assembly 1 is particularly suitable for the thermal treatment of gases, in particular of exhaust gases.
  • the burner assembly 1 is arranged in the wall of an exhaust gas-carrying line in countercurrent to the exhaust gas.
  • the flame emerging from the oxygen-fuel burner 3 serves to heat the exhaust gas to a specific temperature at which the desired reaction of an exhaust gas constituent with the supplied oxygen is favored.
  • pollutants purposely contained in the exhaust gas such as longer-chain hydrocarbons, are burned or e.g. destroyed by cracking and can then be filtered out or otherwise removed.
  • the burner arrangement is particularly suitable in the cases in which the fuel-oxygen burner 3 is to be driven predominantly in base load, that is to say without the secondary fuel supply 6 being switched on.
  • the burner assembly 1 is also suitable for other applications, for example, for CO afterburning.
  • a burner assembly of the type shown will be used for the treatment of an exhaust gas.
  • the aim is the elimination of organic constituents in a CO-rich exhaust gas by reaction with the supplied oxygen at moderate temperatures of 200 ° to 600 ° C, wherein the CO contained in the exhaust gas is not burned, but an industrial utilization is to be supplied.
  • the burner is therefore designed for a continuous operation of 50kW, which is achieved by burning the base load fuel.
  • peak load periods such as in the heating mode
  • an energy of 1000 kW is required, which is provided by combustion of the full load fuel. Due to the large ratio of 1:20 between basic and full load, the stability of the flame at base load is problematic.
  • By supplying up to 300 Nm 3 / h of oxygen through the oxygen lance designed as a swirl lance however, the flame is stabilized even in base load operation and continuous operation is possible even at low energies or temperatures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP08104500.7A 2007-07-07 2008-06-23 Procédé et dispositif de traitement thermique de matières liquides ou gazeuses Withdrawn EP2014981A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007031782A DE102007031782A1 (de) 2007-07-07 2007-07-07 Verfahren und Vorrichtung zum thermischen Behandeln von flüssigen oder gasförmigen Stoffen

Publications (2)

Publication Number Publication Date
EP2014981A2 true EP2014981A2 (fr) 2009-01-14
EP2014981A3 EP2014981A3 (fr) 2017-07-19

Family

ID=39864749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08104500.7A Withdrawn EP2014981A3 (fr) 2007-07-07 2008-06-23 Procédé et dispositif de traitement thermique de matières liquides ou gazeuses

Country Status (2)

Country Link
EP (1) EP2014981A3 (fr)
DE (1) DE102007031782A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2988067A1 (fr) * 2014-08-21 2016-02-24 Messer Austria GmbH Chauffage d'un four a l'aide d'un bruleur multi-combustibles
CN110260321A (zh) * 2019-06-30 2019-09-20 华中科技大学 一种实现超低NOx排放的旋转式无焰燃烧器
WO2025038651A1 (fr) * 2023-08-14 2025-02-20 Air Products And Chemicals, Inc. Brûleur bi-combustible et procédé de fonctionnement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059440A1 (de) 2000-11-30 2002-06-13 Messer Griesheim Gmbh Verbrennungsverfahren und impulsstromgesteuerte Brennstoff/Sauerstoff-Lanze

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706533A (en) * 1970-12-28 1972-12-19 Universal Oil Prod Co Thermal incineration unit
DE2348909A1 (de) * 1973-09-28 1975-04-10 Gimborn Probat Werke Nachverbrennungsanlage
US4095929A (en) * 1977-03-14 1978-06-20 Combustion Engineering, Inc. Low BTU gas horizontal burner
US5454712A (en) * 1993-09-15 1995-10-03 The Boc Group, Inc. Air-oxy-fuel burner method and apparatus
GB9519303D0 (en) * 1995-09-21 1995-11-22 Boc Group Plc A burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059440A1 (de) 2000-11-30 2002-06-13 Messer Griesheim Gmbh Verbrennungsverfahren und impulsstromgesteuerte Brennstoff/Sauerstoff-Lanze

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2988067A1 (fr) * 2014-08-21 2016-02-24 Messer Austria GmbH Chauffage d'un four a l'aide d'un bruleur multi-combustibles
CN110260321A (zh) * 2019-06-30 2019-09-20 华中科技大学 一种实现超低NOx排放的旋转式无焰燃烧器
CN110260321B (zh) * 2019-06-30 2020-06-02 华中科技大学 一种实现超低NOx排放的旋转式无焰燃烧器
WO2025038651A1 (fr) * 2023-08-14 2025-02-20 Air Products And Chemicals, Inc. Brûleur bi-combustible et procédé de fonctionnement

Also Published As

Publication number Publication date
DE102007031782A1 (de) 2009-01-15
EP2014981A3 (fr) 2017-07-19

Similar Documents

Publication Publication Date Title
DE3690574C2 (de) Vorrichtung zum Erhitzen von Sauerstoff
DE69515109T2 (de) Verfahren und Vorrichtung zum Verbrennen sauerstoffhaltiger Bestandteile in einem Prozessgas
DE69212686T2 (de) Brenneranlage für fliessfähige Abfallstoffe
DE3004186A1 (de) Verfahren zur verbrennungsbehandlung von ablassfluiden, die stickstoffverbindungen enthalten
EP0663562B1 (fr) Procédé et brûleur pour la réduction des émissions des gaz nocifs pendant la combustion
DE69409075T2 (de) Vorrichtung und Verfahren zur Verbrennung
DE10045322C2 (de) Zerstäubungsbrenner für die thermische Spaltung von schwefelhaltigem Reststoff
DE3537388C2 (fr)
DE102004037620C5 (de) Brennstoff-Sauerstoff-Brenner mit variabler Flammenlänge
EP2014981A2 (fr) Procédé et dispositif de traitement thermique de matières liquides ou gazeuses
EP0484777B1 (fr) Procédé pour la stabilisation d'un processus de combustion
DE102011015317A1 (de) Verfahren und Vorrichtung zum Betreiben eines Ofens
EP0602396A1 (fr) Générateur de chaleur pour processus industriel
EP2846091A1 (fr) Brûleur à oxy-gàz avec allumage à incandescence
EP2775203B1 (fr) Brûleur multi-combustibles et procédé de chauffage d'un four
DE10140422C1 (de) Thermische Nachverbrennungsvorrichtung
EP3803210A1 (fr) Système de buses de carburant
EP2527734A1 (fr) Brûleur industriel doté d'une émission de NOX réduite
EP2453174B1 (fr) Dispositif de brûleur a tube rayonnant avec récupération interne et externe
DE2716460C2 (de) Wandbrenner
EP2908054A1 (fr) Procédé et dispositif de post-combustion in-situ de substances nocives générées par un processus de combustion
DE1962839C3 (de) Vorrichtung zur Verbrennung von Abgas
DE10059440A1 (de) Verbrennungsverfahren und impulsstromgesteuerte Brennstoff/Sauerstoff-Lanze
DE2525303C3 (de) Gasbrenner
DE4419193C2 (de) Verfahren und Vorrichtung zur Verbrennung, insbesondere Nachverbrennung von Gasen sowie zur vollständigen Zersetzung von Schadstoffen und zur Erzeugung von Abgas mit reduziertem NO¶x¶-Gehalt

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MESSER GROUP GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

RIC1 Information provided on ipc code assigned before grant

Ipc: F23D 14/22 20060101AFI20170615BHEP

Ipc: F23D 14/32 20060101ALI20170615BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

REG Reference to a national code

Ref country code: DE

Ref legal event code: R108

AKY No designation fees paid
AXX Extension fees paid

Extension state: RS

Extension state: MK

Extension state: BA

Extension state: AL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180120