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DE547338C - Pulverized coal burners - Google Patents

Pulverized coal burners

Info

Publication number
DE547338C
DE547338C DED58393D DED0058393D DE547338C DE 547338 C DE547338 C DE 547338C DE D58393 D DED58393 D DE D58393D DE D0058393 D DED0058393 D DE D0058393D DE 547338 C DE547338 C DE 547338C
Authority
DE
Germany
Prior art keywords
burner
pulverized coal
coal dust
coal burners
air mixture
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
Application number
DED58393D
Other languages
German (de)
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.)
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Original Assignee
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Publication date
Priority to DED58393D priority Critical patent/DE547338C/en
Application granted granted Critical
Publication of DE547338C publication Critical patent/DE547338C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel

Landscapes

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

Description

Kohlenstaubbrenner Die Erfindung betrifft einen kohlenstaubbrenner mit regelbarem Brennerquerschnitt. Die Neuheit dieses Brenners wird darin erblickt, daß in der Brennermündung ein elliptischer oder parabolischer Strahlkörper zentral eingebaut ist, 'dessen Konkavseite gegen die Brennkammer zu gerichtet ist, so. daß die Reflexstrahlen das aus dem Brenner austretende Kohlenstaubluftgemisch nach allen Richtungen hin treffen.Dusted coal burner The invention relates to a dusty coal burner with adjustable burner cross-section. The novelty of this burner is seen in that in the burner mouth an elliptical or parabolic jet body centrally is installed, 'whose concave side is directed towards the combustion chamber, so. that the reflected rays the coal dust air mixture emerging from the burner after all Meet directions.

Durch diese Formgebung wird also eine bessere Wirkung erzielt, als dies bei ähnlichen bekannten Bauarten mit hohlkegelförmigen Strahlkörpern der Fall ist. Ferner ergibt sich eine vereinfachte Gestaltung und somit geringere Herstellungs- und Betriebskosten.With this shape, a better effect is achieved than this is the case with similar known designs with hollow conical radiators is. Furthermore, there is a simplified design and thus lower manufacturing and operating costs.

In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt.In the drawing, the invention is shown in one embodiment.

Der Brenner besteht aus einem gegen die Mündung sich erweiternden Gehäuse a,. in dem zentral ein elliptischer oder parabolischer Strahlkörper b eingebaut ist, so daß der Kohlenstaub- vermischt mit der Primärluft kreisringförmigen Austritt hat. Dieser Strahlkörper b, der rotiert und dessen Innenfläche parabolische Gestalt besitzt, derart, daß die Konkavseite gegen die Brennkammer zu gerichtet ist, hat außer dem Zweck der,gleichmäßigen Kohlenstaubverteilung .auf den Kreisringquerschnitt den Vorteil, daß er infolge der Einstrahlung v_ an der Brennkammer her stark erhitzt wird,' so daß er selbst als Strahlkörper wirkt. Die von ihm reflektierten Wärmestrahlen durchdringen das aus dem Brenner komriiende Kohlenstaubluftgemisch nach allen Richtungen, wodurch die Zündung günstig beeinflüßt wird. Die Sekundärluftzuführung erfolgt durch einen um die eigentliche Brennerdüse gelagerten Mantel c derart, daß der Primärluftstrom eine Saugwirkung auf den Sekundärluftmantel durch die in-. jektorartige Ausbildung .der. @ Düse ausübt. Der Strahlkörper ist mittels Spindel und Handrad d axial verschiebbar angeordnet; wodurch der Austrittsringquerschnitt der Brenndüse e je nach der Belastung der Brenndüse verstellt- werden kann, derart, daß für alle Belastungen die gleiche Austrittsgeschwindigkeit beibehalten werden kann.The burner consists of one that widens towards the mouth Housing a ,. in which an elliptical or parabolic radiant body b is installed centrally is so that the coal dust mixed with the primary air circular exit Has. This radiant body b, which rotates and whose inner surface is parabolic in shape has, in such a way that the concave side is directed towards the combustion chamber apart from the purpose of uniform distribution of coal dust on the circular ring cross-section the advantage that it heats up strongly as a result of the irradiation v_ at the combustion chamber becomes, 'so that he himself acts as a radiating body. The heat rays reflected by it penetrate the coal dust air mixture coming from the burner in all directions, whereby the ignition is favorably influenced. The secondary air is supplied through a jacket c mounted around the actual burner nozzle in such a way that the primary air flow a suction effect on the secondary air jacket through the in-. jector-like training .the. @ Nozzle exercises. The jet body is axially displaceable by means of a spindle and handwheel d arranged; whereby the outlet ring cross-section of the burner nozzle e depending on the load the nozzle can be adjusted in such a way that the same for all loads Exit speed can be maintained.

Claims (1)

PATENTANSPRUCH: Kohlenstaubbrenner mit einem am Austrittsende des Brennstaubhuftzuführungsrohres als Leitkörper für das Brennstaubluftgemisch angeordneten einstellbaren, -mit der Innenseite gegen die Brennkammer gerichteten Hohlkörper, dadurch gekennzeichnet, daß der Hohlkörper als elliptischer oder parabolischer Strahlkörper ausgebildet ist, so daß die Reflexstrahlen der Innenfläche das aus dem Brenner austretende Kohlenstaubluftgemisch nach allen Richtungen hin treffen.PATENT CLAIM: Coal dust burner with one at the outlet end of the Brennstaubhuftzuführungsrohres arranged as a guide body for the fuel dust air mixture adjustable hollow body with the inside facing the combustion chamber, characterized in that the hollow body is an elliptical or parabolic jet body is designed so that the reflected rays of the inner surface are exiting from the burner Hit the coal dust air mixture in all directions.
DED58393D Pulverized coal burners Expired DE547338C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED58393D DE547338C (en) Pulverized coal burners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED58393D DE547338C (en) Pulverized coal burners

Publications (1)

Publication Number Publication Date
DE547338C true DE547338C (en) 1932-03-31

Family

ID=7057412

Family Applications (1)

Application Number Title Priority Date Filing Date
DED58393D Expired DE547338C (en) Pulverized coal burners

Country Status (1)

Country Link
DE (1) DE547338C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901032A (en) * 1954-11-24 1959-08-25 Gen Thermique Procedes Brola S Combustion apparatus
EP0529779A2 (en) * 1991-08-23 1993-03-03 The Babcock & Wilcox Company Low NOx burners
US6089171A (en) * 1996-07-08 2000-07-18 Combustion Engineering, Inc. Minimum recirculation flame control (MRFC) pulverized solid fuel nozzle tip

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901032A (en) * 1954-11-24 1959-08-25 Gen Thermique Procedes Brola S Combustion apparatus
EP0529779A2 (en) * 1991-08-23 1993-03-03 The Babcock & Wilcox Company Low NOx burners
EP0529779A3 (en) * 1991-08-23 1993-05-26 The Babcock & Wilcox Company Low nox burners
US6089171A (en) * 1996-07-08 2000-07-18 Combustion Engineering, Inc. Minimum recirculation flame control (MRFC) pulverized solid fuel nozzle tip

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