DE933288C - Method for operating a cyclone furnace - Google Patents

Method for operating a cyclone furnace

Info

Publication number
DE933288C
DE933288C DED15503A DED0015503A DE933288C DE 933288 C DE933288 C DE 933288C DE D15503 A DED15503 A DE D15503A DE D0015503 A DED0015503 A DE D0015503A DE 933288 C DE933288 C DE 933288C
Authority
DE
Germany
Prior art keywords
muffle
gases
operating
fire
cyclone furnace
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
DED15503A
Other languages
German (de)
Inventor
Hermann Hennecke
Andreas Sifrin
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
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 Deutsche Babcock and Wilcox Dampfkesselwerke AG filed Critical Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority to DED15503A priority Critical patent/DE933288C/en
Application granted granted Critical
Publication of DE933288C publication Critical patent/DE933288C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • F23C3/008—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion for pulverulent fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Description

Verfahren zum Betreiben einer Zyklonfeuerung Die Erfindung betrifft ein Verfahren zum Betreiben einer Zyklonfeuerung mit Rückführung abgekühlter Feuergase in den Brennraum sowie tan.gentialer Einführung von Brennstaub und Luft.Method of operating a cyclone furnace The invention relates to a method for operating a cyclone furnace with recirculation of cooled flue gases into the combustion chamber as well as the potential introduction of fuel dust and air.

Bei Brennstaubfeuerungen ist es bekannt, abgekühlte Feuergase in den Brennraum einzuführen, damit sie die Flamme umhüllen oder sich mit ihr mischen. Bei Strahlungsdampferzeugern dient diese bekannte Maßnahme dazu, bei Teillast das Absinken der Dampftemperatur des befeuerten Dampferzeugers mit Überhitzer zu verhindern oder abzuschwächen.In the case of pulverized fuel firing systems, it is known to add cooled fire gases to the Introduce combustion chamber so that they envelop or mix with the flame. In the case of radiant steam generators, this known measure serves to reduce the To prevent lowering of the steam temperature of the fired steam generator with superheater or weaken.

Auch ist bereits eine Feuerungsanlage bekannt, bei welcher den Feuergasen abgekühlte Rauchgase hinter der Brennkammer zugemischt werden. Es bestand aber bei dieser Anlage die Gefahr, daß sich Feuergase und Rauchgase nicht miteinander mischen, sondern nebeneinander die Anlage durchströmen, so daß die Heizflächen nicht gleichmäßig beheizt werden.A combustion system is also already known in which the fire gases cooled flue gases are mixed in behind the combustion chamber. But it persisted this system the danger that the fire gases and smoke gases do not mix with one another, but flow through the system side by side, so that the heating surfaces are not uniform be heated.

Bei der Zyklonfeuerung ist die Feuerleistung der Muffel so groß, daß es einen Verlust an Kühlwirkung bedeuten würde, wollte man die abgekühlten Feuergase in den Nachbrennraum oder in den Strahlungsraum einführen. Andererseits würde es die Verbrennung verzögern, wenn diese abgekühlten Feuergase in der Muffel mit der Flamme vermischt würden. Ihre kühlende Wirkung in der Muffel wäre jedoch für die Dampftemperaturregelung von Vorteil. Deshalb werden gemäß der Erfindung die abgekühlten Feuergase axial, vorzugsweise ohne Drall, in die der Feuergasausströmöffnung gegenüberliegende Stirnseite der Muffel eingeführt. Sie strömen dann als Axialstrahl durch die Muffel, ohne die Verbrennung zu stören und mischen sich mit den Feuergasen erst in der Muffelausströmöffnung. Vorzugsweise werden die Abgase ohne Drall in die Muffel eingeführt, damit sie nicht das Bestreben haben, an die Zylinderwand der Muffel zu gelangen. Voraussetzung ist, daß der Muffel Brennstaub und Luft tangential zugeführt werden, damit-die Abgase in einem geraden Strahl von der Kegelspitze der Muffel zur Feuergasausströmöffnung in der gegenüberliegenden Stirnwand gelangen können.With cyclone firing, the firing capacity of the muffle is so great that it would mean a loss of cooling effect if one wanted the cooled fire gases Introduce into the afterburning room or into the radiation room. Then again it would Delay the combustion when these cooled fire gases in the muffle with the Flame would be mixed. Their cooling effect in the muffle would be for them Steam temperature control is an advantage. Therefore, according to the invention the cooled fire gases axially, preferably without a twist, into the fire gas outlet opening opposite face of the muffle introduced. They then flow as an axial jet through the muffle without disturbing the combustion and mix with the fire gases only in the muffle outlet opening. Preferably, the exhaust gases are in the muffle introduced so that they do not have the tendency to hit the cylinder wall to get to the grouch. The prerequisite is that the muffle dust and air tangentially are supplied so that-the exhaust gases in a straight jet from the apex of the cone Muffle reach the fire gas outlet opening in the opposite end wall can.

Claims (1)

PATENTANSPRUCH: Verfahren zum Betreiben einer Zyklonfeuerung mit Rückführung abgekühlter Rauchgase in den Brennraum sowie tangentialer Einführung vonBrennstaub undLuft, dadurch gekennzeichnet, daß die Feuergase axial, vorzugsweise ohne Drall, in die der Feuergasausströmöffnung gegenüberliegendeStirnseite derMuffel eingeführt werden. Angezogene Druckschriften: Deutsche Patentschrift Nr. 617 377. PATENT CLAIM: Process for operating a cyclone furnace with recirculation of cooled flue gases into the combustion chamber and tangential introduction of combustion dust and air, characterized in that the fire gases are introduced axially, preferably without a twist, into the face of the muffle opposite the fire gas outflow opening. Referenced publications: German patent specification No. 617 377.
DED15503A 1953-07-16 1953-07-16 Method for operating a cyclone furnace Expired DE933288C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED15503A DE933288C (en) 1953-07-16 1953-07-16 Method for operating a cyclone furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED15503A DE933288C (en) 1953-07-16 1953-07-16 Method for operating a cyclone furnace

Publications (1)

Publication Number Publication Date
DE933288C true DE933288C (en) 1955-09-22

Family

ID=7035058

Family Applications (1)

Application Number Title Priority Date Filing Date
DED15503A Expired DE933288C (en) 1953-07-16 1953-07-16 Method for operating a cyclone furnace

Country Status (1)

Country Link
DE (1) DE933288C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617377C (en) * 1930-04-17 1935-08-17 Schmidt Sche Heissdampf Ges M Superheater with its own combustion and with return of the flue gases for the purpose of mixing with the fire gases

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617377C (en) * 1930-04-17 1935-08-17 Schmidt Sche Heissdampf Ges M Superheater with its own combustion and with return of the flue gases for the purpose of mixing with the fire gases

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