DE3709600A1 - Atmospheric gas burner - Google Patents

Atmospheric gas burner

Info

Publication number
DE3709600A1
DE3709600A1 DE19873709600 DE3709600A DE3709600A1 DE 3709600 A1 DE3709600 A1 DE 3709600A1 DE 19873709600 DE19873709600 DE 19873709600 DE 3709600 A DE3709600 A DE 3709600A DE 3709600 A1 DE3709600 A1 DE 3709600A1
Authority
DE
Germany
Prior art keywords
cooling rods
atmospheric gas
gas burner
flame
burner
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
DE19873709600
Other languages
German (de)
Other versions
DE3709600C2 (en
Inventor
Lothar Bechtum
Dieter Becker
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.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik 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 Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Priority to DE19873709600 priority Critical patent/DE3709600A1/en
Publication of DE3709600A1 publication Critical patent/DE3709600A1/en
Application granted granted Critical
Publication of DE3709600C2 publication Critical patent/DE3709600C2/de
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/70Baffles or like flow-disturbing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

An atmospheric gas burner has cooling rods (3) associated with its burner tube (1) at intervals to reduce the flame temperature and thus the formation of nitrogen oxides. Flue gas is fed in through the hollow cooling rods (3) to reduce the oxygen partial pressure of the secondary air. This results in a further reduction in nitrogen oxide formation. <IMAGE>

Description

Die Erfindung betrifft einen atmosphärischen Gasbrenner nach dem Oberbegriff des Patentanspruches 1.The invention relates to an atmospheric gas burner according to the preamble of claim 1.

Ein Brenner dieser Art ist in der US-PS 45 25 141 darge­ stellt und beschrieben. Dabei dienen die aus hitzebestän­ digem Material bestehenden, rohrförmigen Kühlstäbe dem Zweck, Wärme abzuleiten. Eine Überhitzung wird verhindert, wodurch die Ausbildung von Stickoxiden verringert wird. Die Kühlstäbe haben ausschließlich einen Kühlzweck, was durch eine Wasserzirkulation zum Ableiten der Wärme noch zusätzlich unterstützt werden kann.A burner of this type is shown in US-PS 45 25 141 represents and described. The serve from heat resistant digem existing tubular cooling rods Purpose to dissipate heat. Overheating is prevented which reduces the formation of nitrogen oxides. The cooling rods have only a cooling purpose, what through a water circulation to dissipate the heat can also be supported.

Außer der Höhe der Flammentemperatur spielt noch der Sauerstoffpartialdruck in der Sekundärluft und die Ver­ weilzeit der Reaktionsteilnehmer für die Bildung von Stickoxiden eine Rolle. Es ist bekannt, durch die Zufuhr von Abgasen zur Verbrennungszone, d. h. eine sogenannte Abgasrückführung, positive Bedingungen zu schaffen. Dabei geht es um eine Einwirkung auf den Verbrennungsvorgang selbst und nicht nur um die Kühlung der Flamme.In addition to the level of the flame temperature, the still plays Oxygen partial pressure in the secondary air and the ver because of the reactants for the formation of Nitrogen oxides matter. It is known through the feed from exhaust gases to the combustion zone, d. H. a so-called Exhaust gas recirculation to create positive conditions. Here is about influencing the combustion process itself and not just about cooling the flame.

Es wird ein atmosphärischer Gasbrenner der genannten Gattung vorgeschlagen, mit dem es möglich ist, alle er­ wähnten Maßnahmen zur Reduzierung der Stickoxidbildung zu nutzen, was dann zu optimalen Ergebnissen führt. It becomes an atmospheric gas burner of the type mentioned Genus proposed with which it is possible to do all of it mentioned measures to reduce nitrogen oxide formation to use, which then leads to optimal results.  

Erfindungsgemäß wird dieses durch das im Kennzeichen des Patentanspruches 1 genannte Merkmal erreicht.According to the invention, this is in the in the mark of claim 1 mentioned feature achieved.

Die bekannten, rohrförmigen Kühlstäbe dienen nicht nur der Kühlung. Sie führen vielmehr Abgase fein verteilt in die Flamme, u. zw. in den von der Sekundärluft beauf­ schlagten Bereich. Somit erfüllen die Kühlstäbe eine mehr­ fache Funktion. Sie kühlen die Flamme und sie verringern den Sauerstoffpartialdruck. Die Stickoxidbildung wird im Höchstmaß reduziert.The well-known tubular cooling rods not only serve of cooling. Rather, they lead in finely divided exhaust gases the flame, u. between in the secondary air struck area. Thus, the cooling rods fulfill one more multiple function. They cool the flame and reduce it the partial pressure of oxygen. The nitrogen oxide formation is in the Extremely reduced.

In der praktischen Ausführung erfolgt die Zuführung der Abgase dadurch, daß die Kühlstäbe an einem Ende ver­ schlossen und an ihrem anderen Ende unter Zwischen­ schaltung einer geeigneten Abgasfördereinrichtung an den Abgaskanal angeschlossen sind. Die Abgase werden durch die Fördereinrichtung, z. B. durch einen Ventilator, aus dem Abgasstrom gesaugt und in die Kühlstäbe geleitet. Durch deren Strömungsöffnungen gelangen sie fein dosiert in die Flamme, wo sie zu einer Verringerung des Sauerstoffpartial­ drucks der Sekundärluft beitragen. Durch eine Steuerung des Ventilators kann die zugeführte Abgasmenge den jeweils vorliegenden Bedürfnissen angepaßt werden, um optimale Umstände im Sinne einer Stickoxidreduzierung zu erreichen.In the practical version, the Exhaust gases in that the cooling rods ver at one end closed and at their other end under intermediate switching a suitable exhaust gas conveyor to the Exhaust duct are connected. The exhaust gases are caused by the Conveyor, e.g. B. by a fan from Exhaust gas stream sucked in and led into the cooling rods. By their flow openings enter the Flame where it causes a reduction in the oxygen partial pressure of the secondary air. By a controller of the fan, the amount of exhaust gas supplied can each existing needs are adjusted to optimal To achieve circumstances in the sense of a nitrogen oxide reduction.

Die beigefügte Zeichnung stellt in einer einzigen Figur einen Querschnitt durch einen Brenner als Ausführungsbei­ spiel der Erfindung dar.The attached drawing represents a single figure a cross section through a burner as an example game of the invention.

Einem Brennerrohr 1 mit feinen Gasausströmöffnungen 2 in Form von Feinschlitzen oder Feinbohrungen sind im Abstand rohrförmige Kühlstäbe 3 zugeordnet. An diesen erfolgt eine Kühlung der Flamme im Interesse der Stickoxidminderung. Die Kühlstäbe 3 besitzen eine Anzahl zur Flamme gerichteter Strömungsöffnungen 4. Sie sind an den Abgasstrom der Feuerung angeschlossen. Durch eine nicht dargestellte Fördereinrichtung werden Abgase angesaugt und der Flamme zugemischt.A burner tube 1 with fine gas outflow openings 2 in the form of fine slots or fine bores are associated with tubular cooling rods 3 at a distance. The flame is cooled on these in the interest of nitrogen oxide reduction. The cooling rods 3 have a number of flow openings 4 directed towards the flame. They are connected to the flue gas flow from the furnace. Exhaust gases are sucked in by a conveyor device, not shown, and mixed into the flame.

Claims (2)

1. Atmosphärischer Gasbrenner mit mindestens einem Brennerrohr, dem etwa im Abstand des entstehenden Flammen­ kernes rohrförmige Kühlstäbe zugeordnet sind, dadurch gekennzeichnet, daß der Flamme durch die mit einer Anzahl Strömungsöffnungen (4) versehenen Kühlstäbe (3) Abgase zugeführt werden.1. Atmospheric gas burner with at least one burner tube, the tubular cooling rods are associated approximately at a distance from the resulting flame core, characterized in that the flame through the cooling rods ( 3 ) provided with a number of flow openings ( 4 ) exhaust gases are supplied. 2. Atmosphärischer Gasbrenner nach Anspruch 1, dadurch gekennzeichnet, daß die Kühlstäbe an einem Ende verschlossen und mit ihrem anderen Ende unter Zwischen­ schaltung einer geeigneten Abgas-, Fördereinrichtung an den Abgasbereich der Feuerung angeschlossen sind.2. Atmospheric gas burner according to claim 1, characterized in that the cooling rods at one end closed and with its other end under intermediate connection of a suitable exhaust gas, conveyor the flue gas area of the furnace is connected.
DE19873709600 1987-03-24 1987-03-24 Atmospheric gas burner Granted DE3709600A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873709600 DE3709600A1 (en) 1987-03-24 1987-03-24 Atmospheric gas burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873709600 DE3709600A1 (en) 1987-03-24 1987-03-24 Atmospheric gas burner

Publications (2)

Publication Number Publication Date
DE3709600A1 true DE3709600A1 (en) 1988-10-13
DE3709600C2 DE3709600C2 (en) 1990-12-20

Family

ID=6323839

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873709600 Granted DE3709600A1 (en) 1987-03-24 1987-03-24 Atmospheric gas burner

Country Status (1)

Country Link
DE (1) DE3709600A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301955B6 (en) * 2005-03-14 2010-08-11 Arcelormittal Ostrava A.S. Method of cooling burner bodies, heating furnace or the like device provided with the burner cooled in such a manner, and method of controlling such heating furnace or the like device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525141A (en) * 1983-07-11 1985-06-25 Gas Research Institute Regulation of blue flame combustion emissions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525141A (en) * 1983-07-11 1985-06-25 Gas Research Institute Regulation of blue flame combustion emissions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Z.: "Sanitär und Heizungstechnik", 3/1987, S. 203, 204 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301955B6 (en) * 2005-03-14 2010-08-11 Arcelormittal Ostrava A.S. Method of cooling burner bodies, heating furnace or the like device provided with the burner cooled in such a manner, and method of controlling such heating furnace or the like device

Also Published As

Publication number Publication date
DE3709600C2 (en) 1990-12-20

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: F23D 14/78

D2 Grant after examination
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee