EP0086260B1 - Dispositif pour introduire du charbon dans une enceinte de cuisson sous pression - Google Patents

Dispositif pour introduire du charbon dans une enceinte de cuisson sous pression Download PDF

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Publication number
EP0086260B1
EP0086260B1 EP82110460A EP82110460A EP0086260B1 EP 0086260 B1 EP0086260 B1 EP 0086260B1 EP 82110460 A EP82110460 A EP 82110460A EP 82110460 A EP82110460 A EP 82110460A EP 0086260 B1 EP0086260 B1 EP 0086260B1
Authority
EP
European Patent Office
Prior art keywords
mill
coal
shut
pressure
combustion chamber
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
EP82110460A
Other languages
German (de)
English (en)
Other versions
EP0086260A3 (en
EP0086260A2 (fr
Inventor
Klaus Dieter Beckmann
Dieter Wagner
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 AG
Original Assignee
Deutsche Babcock 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 AG filed Critical Deutsche Babcock AG
Priority to AT82110460T priority Critical patent/ATE25551T1/de
Publication of EP0086260A2 publication Critical patent/EP0086260A2/fr
Publication of EP0086260A3 publication Critical patent/EP0086260A3/de
Application granted granted Critical
Publication of EP0086260B1 publication Critical patent/EP0086260B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0003—Heating elements or systems with particulate fuel, e.g. aspects relating to the feeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/003—Cyclones or chain of cyclones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots

Definitions

  • the invention relates to a device for introducing coal into a combustion chamber under increased pressure, in which a mill is provided with a feed line for raw coal and for carrier gas and in feed line for the raw coal immediately before entering the mill, two intermediate bunkers are arranged one behind the other , in the entrances of which a pressure-tight closing member is arranged.
  • the indirect blowing in of the coal via an intermediate storage increases the apparatus structure and the construction volume of the mill drying plant.
  • the direct blowing of coal without intermediate storage has so far only been used in systems with low combustion chamber pressure. Under these pressure conditions, it is sufficient to install a barrier section formed by a coal column or to maintain a minimum height in the raw coal bunker in order to achieve a seal against the atmosphere. Higher pressures cannot be mastered in this way.
  • the invention has for its object to design the generic device so that it is possible to bring ground coal directly into a combustion chamber under increased pressure.
  • This object is achieved according to the invention in a generic device in that the mill is connected directly to the combustion chamber via one or more dust lines, that the first intermediate bunker in the direction of flow of the raw coal is provided with a lockable vent line and that the closure members are designed as pressure-tight closing slides , in front of which an intermediate conveyor is arranged as seen in the flow direction of the coal.
  • the intermediate bunkers provided with the pressure-tight shutters ensure a pressure seal. Since these intermediate bunkers are relocated to the raw coal path, the ground coal can be blown directly into the combustion chamber under increased pressure after the mill.
  • the intermediate conveyors arranged in the flow direction of the raw coal in front of the slide, which closes in a pressure-tight manner, ensure that the raw coal rests on the intermediate conveyor and not on the slide at the bunker discharge. When closing the slide, it does not need to cut through a bed and after closing it is not burdened by the coal column.
  • the raw coal is made available in a storage bunker 1.
  • the raw coal is withdrawn from the storage bunker 1 in a predetermined amount via a cross conveyor 2.
  • Lime or limestone from a lime bunker 3 is added to the raw coal on the cross conveyor 2 via a further cross conveyor 24.
  • Repair slides 4 are provided below the storage bunker 1 and the lime bunker 3.
  • the raw coal and the lime are fed to a mill 5 via a lock system to be described later. If, as shown, the lock system and the storage bunker 1 are arranged at the same height, then a steep conveyor or inclined conveyor 6 must be provided.
  • the mill 5 is provided with an inlet nozzle 7 for the raw coal and with an inlet nozzle for a carrier gas.
  • Air is preferred as the carrier gas. This air is conveyed by a fan 8 and heated in a heat exchanger 9 before entering the mill 5.
  • Hot flue gases can also be used as carrier gas on their own or together with the air.
  • the coal is ground in the mill 5 and dried by contact with the heated air or the hot flue gases.
  • One or more dust lines 10, which are connected to a combustion chamber 11, are connected to the mill 5.
  • the dust-gas mixture generated in the mill 5 is fed to the combustion chamber 11 via the dust line 10.
  • the combustion chamber 11 can be represented by the combustion chamber of a dust burner or a fluidized bed burner or the reaction chamber of a coal gasifier or a blast furnace.
  • the combustion chamber 11 is under an increased pressure of, for example, 40 mbar or under an overpressure of, for example, 20 bar.
  • the lock system consists of two closed intermediate bunkers 12, 13 arranged one behind the other.
  • the volume of the first intermediate bunker 12 in the flow direction of the raw coal is greater than that of the second intermediate bunker 13 connected downstream.
  • the intermediate bunkers 12, 13 are provided with inlet chutes 14 and outlet chutes 15.
  • Arranged in the entry chutes 14 leading to each of the two intermediate bunkers 12, 13 is a pressure-tight closing element which consists of a flap or a slide 16 or 17.
  • the first intermediate bunker 12 is provided with a lockable vent line 18 and is connected to the downstream second intermediate bunker 13 via an equalization line 19 which can also be shut off.
  • the second intermediate bunker 13 is emptied via a discharge element 20, which continuously feeds raw coal to the mill 5 in a predetermined amount.
  • a repair slide 4 is provided in the discharge chute 15 of the first and second intermediate bunkers 12, 13 above the discharge member 20.
  • An intermediate conveyor 21 is arranged between the outlet pipe 15 of the first intermediate bunker 12 and the inlet pipe 14 of the second intermediate bunker 13 above the gas-tight slide 17.
  • the bed of raw coal present in the first intermediate bunker 12 rests on this intermediate conveyor 21.
  • the intermediate conveyor 21 is actuated only as long as the slide 17 of the second intermediate bunker 13 is open. If this slide 17 is to be closed, the intermediate conveyor 21 is stopped beforehand. In this way, the slide 17 does not have to be pushed through the coal column, nor is it loaded by the coal column.
  • the same task as the intermediate conveyor 21 is performed with respect to the slide 16 of the first intermediate hopper 12 by the inclined conveyor 6 or, in the absence thereof, the cross conveyor 2.
  • the intermediate bunkers 12, 13 can be charged with inert gas.
  • an inert gas line 22 is provided, which is connected to the intermediate bunkers 12, 13 via lockable branch lines 23.
  • the inert gas is at a higher pressure than prevails in the combustion chamber 11.
  • Treated flue gas from the combustion chamber 11 can be used as the inert gas.
  • the lock system described works in the following way. Due to the arrangement of the slides 16, 17, the equalization line 19 and the vent line 18, the second intermediate bunker 13 is constantly under the increased pressure, while the first intermediate bunker 12 can optionally be placed under the increased pressure and under atmospheric pressure.
  • the first intermediate bunker 12 can be filled from the storage bunker 1 and the lime bunker 3 via the inclined conveyor 6 when the slide 16 of the first intermediate container 12 and the shut-off device in the ventilation line 18 are open and the slide 17 of the second intermediate bunker 13 and the shut-off device in Compensation line 19 are closed and the intermediate conveyor 21 is out of operation.
  • the discharge member 20 also continuously feeds from the second intermediate bunker 13 into the mill 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gasification And Melting Of Waste (AREA)

Claims (4)

1. Dispositif pour l'introduction du charbon dans une chambre de combustion (11) mise en surpression à laquelle est associé un broyeur (5) équipé de conduites d'arrivée respectivement pour le charbon brut et pour le gaz de transport, deux silos intermédiaires (12, 13) étant disposés l'un à la suite de l'autre sur la conduite d'arrivée du charbon brut immédiatement avant l'entrée de cette conduite dans le broyeur (5), un organe de fermeture étanche à la pression étant monté à l'entrée (14) de chacun des silos intermédiaires, caractérisé en ce que broyeur (5) est raccordé directement à la chambre de combustion (11) par une ou plusieurs gaines (10) de transfert du mélange air-charbon pulvérulent, que le premier silo intermédiaire (12) est pourvu d'une tuyauterie de mise à l'atmosphère (18) dotée d'un organe d'arrêt et que les organes de fermeture sont constitués par des registres (16, 17) assurant une fermeture étanche à la pression, en amont de chacun desquels, dans le sens d'écoulement du charbon, est prévu un transporteur intermédiaire (21, 6).
2. Dispositif selon la revendication 1, caractérisé en ce que, entre les deux silos intermédiaires (12, 13), est prévue une tuyauterie d'équilibrage (19) dotée d'un organe d'arrêt.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les silos intermédiaires (12, 13) sont raccordés à une tuyauterie (22) de gaz inerte pouvant les alimenter par un gaz inerte sous une pression supérieure à celle qui règne dans la chambre de combustion (11).
4. Dispositif selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que le volume du premier silo intermédiaire (12) est supérieur au volume du silo intermédiaire (13) installé en aval du premier.
EP82110460A 1982-02-15 1982-11-12 Dispositif pour introduire du charbon dans une enceinte de cuisson sous pression Expired EP0086260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82110460T ATE25551T1 (de) 1982-02-15 1982-11-12 Vorrichtung zum einbringen von kohle in einen unter erhoehtem druck stehenden verbrennungsraum.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823205321 DE3205321A1 (de) 1982-02-15 1982-02-15 Vorrichtung zum einbringen von kohle in einen unter erhoehtem druck stehenden verbrennungsraum
DE3205321 1982-02-15

Publications (3)

Publication Number Publication Date
EP0086260A2 EP0086260A2 (fr) 1983-08-24
EP0086260A3 EP0086260A3 (en) 1984-05-30
EP0086260B1 true EP0086260B1 (fr) 1987-02-25

Family

ID=6155746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110460A Expired EP0086260B1 (fr) 1982-02-15 1982-11-12 Dispositif pour introduire du charbon dans une enceinte de cuisson sous pression

Country Status (7)

Country Link
EP (1) EP0086260B1 (fr)
JP (1) JPS58145816A (fr)
AT (1) ATE25551T1 (fr)
AU (1) AU554229B2 (fr)
CA (1) CA1223774A (fr)
DE (2) DE3205321A1 (fr)
ZA (1) ZA828682B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162306A (zh) * 2011-12-14 2013-06-19 佛山市国保节能环保技术有限公司 煤粉远程输送和燃烧系统

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347703A1 (de) * 1983-12-31 1985-07-11 Loesche GmbH, 4000 Düsseldorf Vorrichtung und verfahren unter verwendung einer luftstrommuehle zur herstellung einer homogenen mischung aus kohlenstaub und kalkstaub oder dolomitstaub
JPH0351632Y2 (fr) * 1985-04-05 1991-11-06
DE4302637A1 (de) * 1993-01-30 1994-08-04 Babcock Energie Umwelt Vorrichtung zum Zuführen von Rohkohle zu einer Mühle
DE19843255A1 (de) 1998-09-10 2000-03-16 Ver Energiewerke Ag Verfahren und Vorrichtung zum Eintragen körniger Feststoffe in Drucksysteme oder -reaktoren
CN109985717A (zh) * 2017-12-31 2019-07-09 北京蓝亚能源科技有限公司 一种高效煤粉制备工艺的安全保护系统
RU197671U1 (ru) * 2020-02-26 2020-05-21 Виктор Алексеевич Степаненко Установка для приготовления пылевидного топлива

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204942A (en) * 1963-02-18 1965-09-07 Babcock & Wilcox Co Distributor for pneumatically transported particle-form material
NL295333A (fr) * 1962-08-11
DE1188098B (de) * 1962-10-24 1965-03-04 Siderurgie Fse Inst Rech Verfahren zur Regelung der Mengen beim Einblasen pulverfoermiger Stoffe in die Windformen von Hochoefen
US3306238A (en) * 1965-05-20 1967-02-28 Armco Steel Corp Fuel injection system for blast furnaces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162306A (zh) * 2011-12-14 2013-06-19 佛山市国保节能环保技术有限公司 煤粉远程输送和燃烧系统
CN103162306B (zh) * 2011-12-14 2015-05-27 佛山市国保节能环保技术有限公司 煤粉远程输送和燃烧系统

Also Published As

Publication number Publication date
JPS58145816A (ja) 1983-08-31
ZA828682B (en) 1983-09-28
ATE25551T1 (de) 1987-03-15
DE3205321A1 (de) 1983-08-18
AU9140982A (en) 1983-08-25
JPH0225089B2 (fr) 1990-05-31
EP0086260A3 (en) 1984-05-30
AU554229B2 (en) 1986-08-14
CA1223774A (fr) 1987-07-07
DE3275481D1 (en) 1987-04-02
EP0086260A2 (fr) 1983-08-24

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