EP0207478B1 - Dispositif pour la combustion, en particulier de charbon pulvérisé passif - Google Patents

Dispositif pour la combustion, en particulier de charbon pulvérisé passif Download PDF

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Publication number
EP0207478B1
EP0207478B1 EP86108852A EP86108852A EP0207478B1 EP 0207478 B1 EP0207478 B1 EP 0207478B1 EP 86108852 A EP86108852 A EP 86108852A EP 86108852 A EP86108852 A EP 86108852A EP 0207478 B1 EP0207478 B1 EP 0207478B1
Authority
EP
European Patent Office
Prior art keywords
muffle
coal dust
lance
combustion
combusting
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
EP86108852A
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German (de)
English (en)
Other versions
EP0207478A1 (fr
Inventor
Dietrich Buss
Hans-Peter Dipl.-Ing. Beulen
Klaus Dipl.-Ing. Brücher
Wilh. Ing. Wenz (Grad.)
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.)
Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
Original Assignee
Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
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 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk filed Critical Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
Publication of EP0207478A1 publication Critical patent/EP0207478A1/fr
Application granted granted Critical
Publication of EP0207478B1 publication Critical patent/EP0207478B1/fr
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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

Definitions

  • the invention relates to a device for burning, in particular inert coal dust, according to the preamble of the main claim.
  • EP-OS-0 111 874 discloses a device for burning, in particular inert coal dust, which has the features of the generic term of
  • the object of the invention is to adapt the combustion process in the device to different operating conditions and types of coal, i. H. to take into account the condition of the device when starting up and during operation, on the one hand, and the type of coal dust, in particular the proportion of volatile constituents, on the other hand, in such a way that ignition can take place without problems, the flame is stabilized and certain temperatures are maintained or at certain points in the Device neither be exceeded nor undershot.
  • This is intended to achieve a high degree of efficiency of the device, e.g. e.g. B. high burnout and thus a low proportion of the unburned combustible material should be achieved in the ash.
  • This task should be achieved with structurally simple and easy to use and maintain means that can also be attached to existing devices of the generic type.
  • the invention provides the features of the characterizing part of the main claim.
  • the features of the subclaims serve to improve and further develop the features of the main claim.
  • the coal dust is brought into such a state that it largely corresponds optimally to the respective state of the device and the type of coal, i. H. um u. a. to achieve immediate, trouble-free ignition, to adapt the combustion to the respective type of coal, to keep the temperature environmentally friendly and to achieve a favorable burnout.
  • DE-A-1 501 981 discloses a combination burner for the simultaneous or optional combustion of gas, preferably top gas and coal dust, in which the guide tube for the secondary air is arranged coaxially with the burner tube.
  • a burner tube for the supply of coal dust with primary air and a gas supply centrally surrounding the front end of the burner tube are used.
  • An in the front burner tube end and out and retractable is acting as a closure member of the burner tube impeller with the help of a push and pull rod such that the impeller is wholly or partially in or outside the tube and thus either the coal dust or the gas or a mixture of both the way is released into the combustion chamber.
  • a regulation and control of the amount of only the coal dust as the only medium in the device is not possible with this device and therefore gave the person skilled in the art no hint to achieve the object of the present invention.
  • the device according to the invention has a burner muffle 1 which is conical and widens from its front end 2 to its rear end 3.
  • the front end 2 has a swirl device 4, in which the combustion air supplied via the line 5 is introduced tangentially into the muffle 1 and is set into a helical swirl flow 6 in the muffle.
  • the other devices, such as the ignition device, etc., are not shown in detail and are of a known type.
  • a tubular feed lance 7 protrudes through the burner muffle 1 in its longitudinal axis. H. near the rear end of the muffle 3 carries a cap 8 which causes the direction of the conveying air for the coal dust and the coal dust itself in the lance (arrow 7a) to be reversed and this in the direction of the arrows 9, producing a flow part 10b emerge from the cap 8.
  • the combustion air passes from the muffle 1 into a combustion and acceleration chamber 11, the helical swirl movement of the combustion air being maintained as an internal swirl flow 12 along the solid lines.
  • the flame 13 forms, which, for. B. protrudes into the boiler room 14 of the downstream boiler 15.
  • the combustion and acceleration chamber 11 has a conical shape, the wall 16 of the chamber 11 tapering from its front to its rear end 17.
  • the cross section of the core 11 at the transition between the muffle 1 and the combustion or acceleration chamber is kept larger than the cross section at the rear end 3 of the burner muffle 1. This forms an annular channel 18 and a jacket-like extension 19 of the acceleration chamber.
  • air or gas nozzles inserted tangentially into the wall 16 are arranged in the successive transverse planes a to e, which can have the same or approximately the same distance from one another, and bear the reference numbers 20 to 27 in FIG. 1 and which either have different angles of attack to the transverse planes or are adjustable relative to these transverse planes.
  • Air or gas jets emerge from the nozzles 20 to 29 in the direction of rotation or rotation of the inner swirl flow 12 of the combustion air loaded with coal dust and produce a swirl flow from the rear end 17 of the combustion or acceleration chamber which runs in the opposite direction in the longitudinal direction of the combustion and acceleration chamber 11 11 to the rear end 3 of the muffle 1.
  • This external swirl flow which is created or promoted by the air or gas jets from the nozzles 20 to 29, is symbolized by the dash-dotted line 30.
  • the wall 40 of the swirl device 4 has an axially located guide bush 41 which partly projects into the muffle and partly from the muffle 1 and in which the feed lance 7 can be displaced in the direction of the double arrow P in such a way that the cap-like part 8 of the lance 7 1 as well as the withdrawn position 8a is able to assume both.
  • the path of the conveying air and the coal dust particles in the muffle 1 is either lengthened or shortened.
  • the position of the lance and its cap 8 can be determined by means of sensors 42, 43 in the wall 16 of the combustion and acceleration chamber and by a sensor 44 in the wall of the muffle, which if necessary via a computer R with the control device 45 for driving the Lance 7 in the direction of the double arrow P takes place.
  • the path of the dust particles can be changed in the direction of the arrows 10 in the sense of the task at hand if a control valve 46 is installed in the feed line 5, which can also be controlled by the computer R.
  • the swirl device is supplied with an advantageous amount of combustion air, which is preferably, for. B. is preheated as cooling air of the wall of the combustion and acceleration chamber 11.
  • the control valve 46 for controlling the combustion air in the swirl device 4 is combined with a control slide 53, which is designed like a can and at the inner end of the wing 54 the swirl device 4 is adjustable in the direction of the arrow S.
  • the quantity and speed of the combustion air entering the muffle 1 can be advantageously controlled, in particular for the ignition process and the stabilization of the flame, for a high efficiency of the device.
  • the housing of the swirl device 4 has an extension 4a, into and out of which the control slide can be moved.
  • a further possibility of controlling the combustion air in the muffle 1 and thus the path of the air and the coal dust particles along the arrows 10a and 10b is to adjust the wings 54 of the swirl device 4 in their angular position.
  • the muffle 1, the swirl device 4 and the feed lance 7 with its guide bush 41 as well as the computer R and the control valve 46 are designed in the same way as in the embodiment according to FIG. 1.
  • the combustion and acceleration chamber 11 is cylindrical and has the nozzles 20 to 29 at regular intervals.
  • the rear end of the combustion and acceleration chamber 11 has a rear wall 36, to which an ash outlet 35 can be assigned.
  • Another ash outlet 37 can be assigned to the wall 31.
  • the combustion and acceleration chamber 11 can have a further combustion and acceleration chamber 50 be assigned, which adjoins the wall 36, which carries a central sleeve or sleeve 51 with a further swirl device 52.
  • the hot flue gases pass into the boiler 15 from this further combustion and acceleration chamber.
  • the parts of the muffle 1 are designed in the same way as in the embodiment according to FIG. 1.

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

Claims (4)

1. Dispositif pour la combustion, en particulier de charbon pulvérisé passif, comportant un système d'alimentation axiale du charbon pulvérisé et de l'air primaire, présentant la forme d'une lance pourvue d'une calotte d'inversion à son extrémité libre ou sortie, et un dispositif cyclone pour l'air de combustion prévu à l'extrémité opposée à l'extrémité de chauffage d'un mouffle disposé avant une chambre de combustion et d'accélération, dans lequel le charbon pulvérisé subit une inversion de son sens de transport dans la lance d'alimentation, caractérisé en ce que la lance (7) se trouve insérée dans une buse (41) traversant la paroi arrière du moufle et peut de cette façon y être déplacée dans le sens longitudinal.
2. Dispositif suivant la revendication 1, caractérisé en ce que l'extrémité avant de la lance (7) peut être déplacée hors de la chambre de combustion et d'accélération (11) jusque dans le moufle (1) et inversément.
3. Dispositif suivant la revendication 1, caractérisé en ce que la position de la lance (7) est commandée par des sondes de température (42 - 44) prévues dans le moufle (1) ou dans la chambre de combustion et d'accélération (11).
EP86108852A 1985-06-28 1986-06-28 Dispositif pour la combustion, en particulier de charbon pulvérisé passif Expired EP0207478B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3523172 1985-06-28
DE19853523172 DE3523172C1 (de) 1985-06-28 1985-06-28 Vorrichtung zum Verbrennen von reaktionstraegem Kohlenstaub

Publications (2)

Publication Number Publication Date
EP0207478A1 EP0207478A1 (fr) 1987-01-07
EP0207478B1 true EP0207478B1 (fr) 1988-11-02

Family

ID=6274448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108852A Expired EP0207478B1 (fr) 1985-06-28 1986-06-28 Dispositif pour la combustion, en particulier de charbon pulvérisé passif

Country Status (2)

Country Link
EP (1) EP0207478B1 (fr)
DE (1) DE3523172C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052464A1 (de) * 2010-11-24 2012-05-24 Ludwig Müller Dreh-Strom-Feuerung (DSF)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8916022U1 (de) * 1989-11-24 1993-02-11 VEAG Vereinigte Energiewerke AG, 10115 Berlin Anordnung zur Temperaturmessung von Kohlenstaub-Brennerflammen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113511A1 (de) * 1981-04-03 1982-10-14 Holec Gasgenerators B.V., 6500 Nijmegen "brenneranordnung, insbesondere fuer einen gasbrenner"

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501981A1 (de) * 1965-12-24 1969-02-20 Babcock & Wilcox Dampfkessel W Kombinationsbrenner
DE2527618C2 (de) * 1975-06-20 1985-09-26 Fritz Dr.-Ing. 8026 Ebenhausen Schoppe Verfahren und Vorrichtung zur Verbrennung von Kohlenstaub
EP0111874B1 (fr) * 1982-12-15 1987-04-22 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk Installation pour brûler la poussière de charbon
DE3441138A1 (de) * 1984-11-10 1986-05-15 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk, 5142 Hückelhoven Vorrichtung zum verbrennen, insbesondere von reaktionstraegem kohlenstaub

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113511A1 (de) * 1981-04-03 1982-10-14 Holec Gasgenerators B.V., 6500 Nijmegen "brenneranordnung, insbesondere fuer einen gasbrenner"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052464A1 (de) * 2010-11-24 2012-05-24 Ludwig Müller Dreh-Strom-Feuerung (DSF)

Also Published As

Publication number Publication date
EP0207478A1 (fr) 1987-01-07
DE3523172C1 (de) 1986-12-11

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