DE478352C - Pulverized coal firing - Google Patents

Pulverized coal firing

Info

Publication number
DE478352C
DE478352C DES74901D DES0074901D DE478352C DE 478352 C DE478352 C DE 478352C DE S74901 D DES74901 D DE S74901D DE S0074901 D DES0074901 D DE S0074901D DE 478352 C DE478352 C DE 478352C
Authority
DE
Germany
Prior art keywords
coal dust
fineness
burner
zones
pulverized coal
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
DES74901D
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Publication date
Priority to DES74901D priority Critical patent/DE478352C/en
Application granted granted Critical
Publication of DE478352C publication Critical patent/DE478352C/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 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • 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 
    • F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/06—Combustion apparatus using pulverized fuel
    • F23C2700/063—Arrangements for igniting, flame-guiding, air supply in

Landscapes

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

Description

Kohlenstaubfeuerung Wird bei Kohlenstaubfeuerungen der Kohlenstaub an dem einen Ende der Brennkammer und der größere Teil der Luft als Zweitluft, aber nicht unmittelbar am Brenner, zugeführt, so gelingt es nicht, sofort die ganze Kohlenstaubmenge zu zünden, sondern es brennt zunächst nur ein Teil, während der andere Teil erst nach und nach gezündet wird. Die sich hieraus ergebende unliebsame Erscheinung der Ansammlung von unverbrannten Kohlenteilchen an den Rohren, die die Brennkammer auskleiden, hat man dadurch vermieden, daß die Brenner in mehreren Zonen, die in Richtung der Brennkammer oder des Flammenweges aufeinanderfolgen, gezündet werden. Da dann in jeder Zone eine entsprechend geringere Menge in die Brennkammer eingegeben -wird, so ist es auf diese Weise möglich, eine sofortige Zündung der ganzen Brennstoffmenge zu erzielen und die Ansammlung von unverbrannten Kohlenteilchen zu verhindern.Coal dust firing Is the coal dust in coal dust firing at one end of the combustion chamber and the greater part of the air as secondary air, however not supplied directly to the burner, so it does not succeed, immediately the whole amount of coal dust to ignite, but at first only one part burns, while the other part only burns is gradually ignited. The resulting unpleasant appearance of the Accumulation of unburned coal particles on the pipes lining the combustion chamber, it has been avoided that the burner in several zones, which in the direction of Combustion chamber or the flame path follow one another, are ignited. Then in a correspondingly smaller amount is added to the combustion chamber in each zone, in this way it is possible to have an immediate ignition of the whole amount of fuel and prevent the accumulation of unburned coal particles.

Bei der Anordnung verschiedener Brennerzonen steht den einzelnen Kohlenteilchen ein verschieden langer Brennweg zur Verfügung, j e nachdem sie in die ersten oder in einer späteren Zone eingegeben werden. Es könnte also bei dieser Anordnung vorkommen, daß die in späteren Zonen eingegebenen Kohlenteilchen nicht vollkommen verbrennen. Um die hierdurch entstehenden Verluste zu vermeiden, wird gemäß der Erfindung der Kohlenstaub j e nach seiner Feinheit eingeführt, und zwar so, daß in die erste Zone der gröbste, in die letzte Zone der feinste Staub eingegeben wird. Die groben Teilchen haben also den längeren Verbrennungsweg und verbrennen infolgedessen ebenso vollkommen wie die feinen Teilchen.When arranging different burner zones, the individual coal particles stand a different length of firing path is available, depending on whether it was in the first or to be entered in a later zone. So it could happen with this arrangement that the coal particles introduced in later zones do not burn up completely. In order to avoid the resulting losses, according to the invention Coal dust is introduced according to its fineness, in such a way that in the first zone the coarsest and the finest dust in the last zone. The coarse particles So they have the longer combustion path and consequently burn just as completely like the fine particles.

Will man eine Trennung der verschiedenen Feinheitsgrade des ausgemahlenen Gutes weitab vom Ofen und deren getrennte Zuführung zum Ofen vermeiden, so kann gemäß der Erfindung vor der Brennkammer ein Sichter angeordnet werden, von dessen verschiedenen Feinheitsstufen aus die Zuleitungen unmittelbar zu dem Brenner führen.If one wants a separation of the different degrees of fineness of the ground Avoid good things far from the furnace and their separate supply to the furnace, so can be arranged according to the invention in front of the combustion chamber, a classifier of which different degrees of fineness from the supply lines lead directly to the burner.

Die Abb. r und 2 zeigen in einer Ansicht und in einer Aufsicht eine Brennkammer, bei der -der Erfindungsgedanke beispielsweise dargestellt ist. Die Brennkammer z ist allseitig mit Rohren 2 ausgekleidet. Durch die Rohre 3 wird der Brennstoff den Brennern 4 am oberen Ende der Brennkammern zugeführt. Er gerät in eine Wirbelbewegung und verbrennt dabei unter Fortbewegung in Richtung der gezeichneten Pfeile. Der Kohlenstaub gelangt durch eine Leitung 6 nach einem Sichter 7, an dem einerseits die genannten Zuleitungen 3, anderseits die Rohre 8 angeschlossen sind, die zu den Brennern 9 führen. Die Brenner 9 liegen in einer Zone unterhalb der Brennerzone 4. Die Rohre 3 und 8 sind derart an den Sichter 7 angeschlossen, daß dem Rohr 3 der gröbere Kohlenstaub, dem Rohr 8 der feinere Kohlenstaub eingegeben wird.Figs. R and 2 show a view and a plan view Combustion chamber in which the concept of the invention is shown, for example. the Combustion chamber z is lined with tubes 2 on all sides. Through the tubes 3 is the Fuel supplied to the burners 4 at the top of the combustion chambers. He gets in a whirling motion and burns while moving in the direction of the drawn Arrows. The coal dust passes through a line 6 to a classifier 7 on which on the one hand the mentioned supply lines 3, on the other hand the pipes 8 are connected, which lead to the burners 9. The burners 9 are located in a zone below the burner zone 4. The pipes 3 and 8 are connected to the classifier 7 in such a way that the pipe 3 the coarser coal dust, the pipe 8 the finer coal dust is entered.

Claims (2)

PATENTANSPRÜCHE: r. Kohlenstaubfeuerung, bei der der Brennstoff durch mehrere in verschiedenen Zonen der Brennkammer in der Flammenhauptrichtung aufeinanderfolgende Brenner eingegeben wird, dadurch gekennzeichnet, daß die in Richtung der Flamme aufeinanderfolgenden Brenner mit Kohlenstaub zunehmender Feinheit gespeist werden. PATENT CLAIMS: r. Coal dust firing, in which the fuel is through several successive ones in different zones of the combustion chamber in the main direction of the flame Burner is entered, characterized in that the in the direction of the flame successive burners are fed with coal dust of increasing fineness. 2. Kohlenstaubfeuerung nach Anspruch x, dadurch gekennzeichnet, daß die einzelnen Brennerzonen von einem Sichter (Verteiler) aus gespeist werden, in dem der Kohlenstaub seiner Feinheit nach geschieden und j e nach seinem Feinheitsgrad in die Zuleitungen zu den verschiedenen Brennerzonen eingegeben wird.2. pulverized coal furnace according to claim x, characterized in that the individual Burner zones are fed from a classifier (distributor) in which the coal dust divided according to its fineness and each according to its degree of fineness in the supply lines is entered for the various burner zones.
DES74901D Pulverized coal firing Expired DE478352C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES74901D DE478352C (en) Pulverized coal firing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES74901D DE478352C (en) Pulverized coal firing

Publications (1)

Publication Number Publication Date
DE478352C true DE478352C (en) 1929-06-22

Family

ID=7504978

Family Applications (1)

Application Number Title Priority Date Filing Date
DES74901D Expired DE478352C (en) Pulverized coal firing

Country Status (1)

Country Link
DE (1) DE478352C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891314C (en) * 1937-03-12 1953-09-28 Babcock & Wilcox Dampfkessel W Process for burning coal dust in two partial streams of different grain sizes and application of the process to coal dust firing systems with more than two partial streams
DE911320C (en) * 1950-06-10 1954-05-13 Peters Ag Claudius Coal dust firing with several burners fed by a distributor with coal dust of different degrees of fineness, especially for rotary furnaces
DE1082365B (en) * 1954-04-03 1960-05-25 Babcock & Wilcox Dampfkessel Method and device for burning inferior, in particular low-gas fuels in a mixture with high-quality, in particular high-gas fuels in a cyclone furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891314C (en) * 1937-03-12 1953-09-28 Babcock & Wilcox Dampfkessel W Process for burning coal dust in two partial streams of different grain sizes and application of the process to coal dust firing systems with more than two partial streams
DE911320C (en) * 1950-06-10 1954-05-13 Peters Ag Claudius Coal dust firing with several burners fed by a distributor with coal dust of different degrees of fineness, especially for rotary furnaces
DE1082365B (en) * 1954-04-03 1960-05-25 Babcock & Wilcox Dampfkessel Method and device for burning inferior, in particular low-gas fuels in a mixture with high-quality, in particular high-gas fuels in a cyclone furnace

Similar Documents

Publication Publication Date Title
DE3107649A1 (en) METHOD FOR AT LEAST TWO-STAGE IGNITION OF A COMBUSTION POWER BURNER FLAME AND BURNING SYSTEM FOR CARRYING OUT THE METHOD
DE69009686T2 (en) Combustion process.
DE478352C (en) Pulverized coal firing
DE623770C (en)
DE2614878B2 (en) Incinerator for waste
DE536831C (en) Steep inclined grate
DE674033C (en) Loading device for traveling grate firing systems
DE678559C (en) Grate furnace for pre-dried fuels, the fine-grained parts of which are burned in suspension
DE890254C (en) Method and device for the operation of pulverized coal furnaces for high-performance steam boilers
DE666708C (en) Dust firing, especially for moist fuel
DE578127C (en) Inclined grate firing with fuel feed shaft built in front of the grate
DE352512C (en) Method and device for sintering together fine ores and hut products by blowing them on a moving surface
DE971279C (en) Process for burning coal dust obtained in the grinding-drying process
DE412552C (en) Process for burning fuels with inconsistent grain size, e.g. B. Coal, in firing systems with grate firing and additional dust firing
DE622900C (en) Mill firing
DE364736C (en) Oil firing for heating inserts from room stoves or the like with impact devices and drip plates for the oil
DE594858C (en) Burner for pulverized coal firing
DE4127999A1 (en) Steam-generator operating system - returns exhaust to two regenerative air-preheaters in series, second being corrosion-resistant
DE562430C (en) Traveling grate for fine-grain fuels
AT81410B (en) Air supply device for steam boiler combustioneAir supply device for steam boiler combustion for liquid fuels. n for liquid fuels.
DE371166C (en) Liquid fuel firing
DE555973C (en) Pulverized coal firing
DE902540C (en) Steam boiler firing with a ram running back and forth over the plan grate
DE481554C (en) Process and device for burning fine-grain coal on traveling grates
DE358970C (en) Traveling grate firing for fuels that are difficult to ignite with ignition vaults stored in the feed hopper for the preliminary fire