EP0152589A2 - Dispositif d'extraction des mâchefers pour appareils à combustion de grande capacité - Google Patents

Dispositif d'extraction des mâchefers pour appareils à combustion de grande capacité Download PDF

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Publication number
EP0152589A2
EP0152589A2 EP84115331A EP84115331A EP0152589A2 EP 0152589 A2 EP0152589 A2 EP 0152589A2 EP 84115331 A EP84115331 A EP 84115331A EP 84115331 A EP84115331 A EP 84115331A EP 0152589 A2 EP0152589 A2 EP 0152589A2
Authority
EP
European Patent Office
Prior art keywords
slag
discharge device
slag discharge
push
push rod
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.)
Withdrawn
Application number
EP84115331A
Other languages
German (de)
English (en)
Other versions
EP0152589A3 (fr
Inventor
Peter Lorenz
Adolf Ing-Grad. Magnus
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.)
K+K Ofenbau GmbH
Original Assignee
K+K Ofenbau GmbH
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
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Application filed by K+K Ofenbau GmbH filed Critical K+K Ofenbau GmbH
Publication of EP0152589A2 publication Critical patent/EP0152589A2/fr
Publication of EP0152589A3 publication Critical patent/EP0152589A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/01021—Removing ashes from the ash pit using reciprocating means, e.g. pushers

Definitions

  • the invention relates to a visual slag discharge device for large combustion plants with a slag chute and a discharge trough adjoining the lower end thereof, in which a push-out plunger for conveying the slag arriving via the slag chute is guided back and forth in the discharge direction, a drive being provided for the movement.
  • Such slag discharge devices serve to take up the residues conveyed from the combustion chamber into the slag fall chute after the combustion process and to reduce the temperature to below 7 ° C. as far as possible by means of optionally variable time delay before these residues reach a downstream transport device.
  • the slag discharge devices can be operated dry or wet.
  • the dry driving style is used especially in waste incineration plants, because the grain The size of the slag is comparatively smaller and the temperature can be reduced more quickly as a result.
  • the dry driving style has the advantage that its operating costs are much cheaper than when the driving style is wet.
  • the residues fall from above through the slag chute into a water bath in the discharge trough and are deleted there.
  • the height of the water level is such that no false air can enter the incineration plant through the slag chute.
  • a disadvantage of the wet process is that the water content of the discharged slag is 3o Gew.X and more.
  • high costs arise for the subsequent transport to the landfill. Added to this are the costs for fresh water and process water consumption as well as the costs for cleaning the slag extinguishing water, some of which is heavily contaminated with pollutants, and which reaches the sewer system via the purifier overflow and from the ash bunker.
  • the push-out pushes L generally consist of a front plate and two push-up arms projecting into the drive area, the ends of which are articulated on a swivel lever.
  • This swivel lever is usually swung back and forth by a hydraulic lever cylinder using a complicated lever mechanism, which means that the push-out push in the area below the slag case is pushed back and forth accordingly.
  • the lower edge of its front plate lies on the bottom of the discharge tray.
  • the invention is therefore based on the object of making the drive for the ejection pushes L as simple and maintenance-friendly as possible.
  • roller guide (s) should be arranged in the rear area of the extension plunger and its front side on the Support the bottom of the discharge tray in a manner known per se.
  • a roller guide is expediently arranged on each of its two sides for exact guidance of the push rod. It should then consist of at least one RoLLe arranged on the push-out joints and two spaced-apart guideways that enclose the roller (s). Of course, this can also happen kinematically in reverse, i.e. that the guideways on the push rod and the rollers are arranged in a fixed position.
  • the drive consists of at least one hydraulic valve cylinder, one end of which is articulated directly to the extension push rod.
  • a two-way arrangement is expediently also provided here in order to divide the forces and avoid jamming.
  • the HydrauLikzyLinder should be located on the outside of the discharge tray.
  • roller guide (s) is or are adapted to the shape of the bottom of the discharge trough in the range of movement of the ejection pushes L. In this way, a swiveling movement of the push-out joint L during its displacement movement is avoided, so that no complicated between push-out joint L and lower edge of the slag chute Sealing measures must be provided.
  • the existing gap can be made very narrow so that hardly any slag can penetrate through it.
  • the roller guide (s) has such an extension that the range of movement of the push rod extends approximately over the entire cross section of the slag chute. This possibility is also an advantage of the forced roller guide with the consequence that considerably more material can be transported with one extension movement.
  • a catch basin with at least one cleaning opening is provided for ashes carried along during the backward stroke of the push-out push in the drive and guide area of the push-out push.
  • This collecting basin makes it possible to collect the ashes carried in this way and to remove them at certain intervals via the cleaning opening.
  • the ash or ash sludge can then be deposited in an orderly manner and in accordance with the regulations.
  • the bottom of the discharge trough in the drive and guide area of the push-out plunger should be raised to the water level line so that there is no uncontrolled water drainage in this area.
  • the catch basin should have an overflow in the area of the water level line so that an emergency drain is possible when the catch basin is full.
  • a cover plate is provided in the drive and guide area of the push-out joint for sealing against vapors or dust escaping.
  • This cover plate should be arranged below the guide area and - in wet operation - above the water level line and have sealed openings for the passage of the extension plunger or its impact arms.
  • the invention is illustrated in more detail by means of an embodiment example shown in the vertical section. It shows a slag discharge device 1 with a slag chute 2 and a discharge trough 3.
  • the slag chute 2 has a rectangular cross section and runs vertically. Its walls 4, 5 are reinforced with vertical and horizontal stiffening plates 6, 7, 8, 9, 10 on the outside. At the upper edge, a flange profile 11 is provided, by means of which the slag discharge device 1 can be attached to the part of the slag chute, not shown here, which ligates above it.
  • the lower end of the slag chute 2 opens into the discharge trough 3.
  • the discharge trough 3 has an arcuate bottom 12 which, in this view, merges to the left into a straight, diagonally upward discharge chute 13.
  • the extension chute 13 also has a rectangular cross-section with the bottom wall 14, the side walls 15 and the ceiling wall 16.
  • the top wall 16 connects directly to the wall 4 of the slag chute 2.
  • the slag chute 2 is worn on all sides Sheets 17, 18, 19 clad, at a distance from the walls 4, 5 of the slag chute 2. Spacers ensure the distance, for example designated 2o.
  • the wear plates 18 attached to the side walls extend into the application trough 3 and there have an arcuate, parallel to the bottom 12 finish 21.
  • In the space 22 between the wear plates 17, 18, 19 and the walls 4, 5 opens one Fresh water line 23.
  • water is introduced into the intermediate space 22 via this fresh water line 23 and in this way cools the wear plates 17, 18, 19 and then arrives in the discharge trough 3, precisely where the extinguishing process in the The main thing takes place.
  • the water level indicated by the dash-dotted line is aimed at so that no false air can get into the slag chute 2 via the opening of the extension chute 13.
  • a convection flow also cools the wear plates 17, 18, 19 in the intermediate space 22.
  • the bottom 12 of the discharge trough 3 and its side walls are, like the bottom wall 14 and the side wall 15 of the extension chute 13, with sealing plates 24, 25; 26, 27, 28, 29, 3 0 , 31 occupied, which can be replaced if necessary without having to remove other parts.
  • a spray nozzle 32 is inserted into the top wall 16. It is used to bind the dust in the dry operation of the slag discharge device.
  • This extension stroke L 33 has on its front side a ram plate 34 that extends across the entire width of the discharge trough 3 and is reinforced on the front side with a steel plate 35. Over the lower edge of this steel plate 35, the push-out joint L 33 rests on the wear plate 24.
  • the steel plate 35 can be rotated through 180 ° so that it has twice the service life.
  • the tappet plate 34 is fastened to two arc-shaped push arms 36, which are arranged parallel and at a distance from one another, so that only the front push arm 36 can be seen here.
  • the upper ends of the shock arms 36 have projections 37, on each of which a guide roller 38 is mounted.
  • Each of these guide rollers 38 is positively guided between two guide tracks 39, 4o running parallel to one another.
  • the guideways 39, 4o have an arc shape which corresponds to that of the bottom 12 of the discharge trough 3. With a displacement in the direction of the extension chute 13, the extension pushers L 33 therefore do not perform any pivoting movement.
  • a hydraulic clutch 41 is arranged on the outside of each of the two side walls for the displacement of the push-out joint 33, only the rear hydraulic cylinder 41 being shown in broken lines here.
  • the respective upper ends of the hydraulic lickers 41 engage on pins which project outward beyond slots 42 and are not shown here.
  • the lower ends of the hydraulic cylinders 41 are articulated to corresponding sockets 43.
  • a cover plate 44 with an overlying wear plate 45 is mounted on the upper edges of the impact arms 36, so that only a small gap remains between the wear plate 45 and the wall 5 or the wear plate 19. This gap remains the same during the entire displacement movement of the push rod 33, since it does not perform any pivoting movement because of the special guidance.
  • the upper part of the drive area is located within a housing 46.
  • This housing is closed at the bottom by a cover plate 47 that is located slightly above the water level.
  • the cover plate 47 has only narrow slots for the passage of the impact arms 36, it also being advantageous here that the extension plunger 33 does not perform any pivoting movement when it is displaced.
  • the slots in cover plate 47 which are not visible here, can additionally be sealed by rubber or brush strips. In this way, penetration of dust in dry operation and vapors in wet operation into the drive area is largely avoided.
  • the bottom 12 is arched with its rear end up to the water level line and forms an overflow edge 48. Dry ash or ash sludge is pushed over this overflow edge 48. This ash is inevitably taken in small quantities by the push-out thrust L 33 when it is pushed backwards and then when it accumulates accordingly and conveyed over the overflow edge 48 into a collecting basin 49 arranged underneath. In the event of overhauls, the ashes collected there can then be removed using a ceiling L 5o screwed on at the bottom. In addition, an overflow 51 is provided at the level of the water level so that no blockages occur. An additional water drain 56 is provided in the cover 50. Another water drain 57 is arranged at the lowest point of the discharge trough 3.
  • a hydraulic pump 52 with an electric drive motor 53 is flanged to the rear of the slag discharge device 1.
  • the hydraulic unit 52 houses an oil tank and a hydraulic pump, which is driven by the drive motor 53 and serves to supply the hydraulic cylinders 41.
  • cleaning openings 54, 55 are provided in the slag chute 2 and in the housing 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
EP84115331A 1984-02-03 1984-12-13 Dispositif d'extraction des mâchefers pour appareils à combustion de grande capacité Withdrawn EP0152589A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8403135U 1984-02-03
DE19848403135 DE8403135U1 (de) 1984-02-03 1984-02-03 Schlackenaustragseinrichtung fuer grossfeuerungen

Publications (2)

Publication Number Publication Date
EP0152589A2 true EP0152589A2 (fr) 1985-08-28
EP0152589A3 EP0152589A3 (fr) 1987-03-04

Family

ID=6763134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115331A Withdrawn EP0152589A3 (fr) 1984-02-03 1984-12-13 Dispositif d'extraction des mâchefers pour appareils à combustion de grande capacité

Country Status (2)

Country Link
EP (1) EP0152589A3 (fr)
DE (1) DE8403135U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363645A1 (fr) * 1988-10-11 1990-04-18 W + E Umwelttechnik Ag Dispositif de décendrage pour installations de combustion
DE102006036904A1 (de) * 2006-08-04 2008-02-07 Tiska Gmbh Vorrichtung und Verfahren zur Entfernung von Schlacken aus einem Entschlacker, Entschlacker und Verfahren zum Auslegen des Bodens eines Entschlackers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE392641A (fr) *
DE974045C (de) * 1951-11-25 1960-08-25 Steinmueller Gmbh L & C Austragvorrichtung fuer Schuettgut, insbesondere fuer Verbrennungsrueckstaende bei Feuerungsanlagen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363645A1 (fr) * 1988-10-11 1990-04-18 W + E Umwelttechnik Ag Dispositif de décendrage pour installations de combustion
US4976206A (en) * 1988-10-11 1990-12-11 W+E Umwelttechnik Ag Mechanism for the removal of slag in incineration plants
CH677140A5 (fr) * 1988-10-11 1991-04-15 W & E Umwelttechnik Ag
DE102006036904A1 (de) * 2006-08-04 2008-02-07 Tiska Gmbh Vorrichtung und Verfahren zur Entfernung von Schlacken aus einem Entschlacker, Entschlacker und Verfahren zum Auslegen des Bodens eines Entschlackers
DE102006036904B4 (de) * 2006-08-04 2008-04-03 Tiska Gmbh Vorrichtung und Verfahren zur Entfernung von Schlacken aus einem Entschlacker, Entschlacker und Verfahren zum Auslegen des Bodens eines Entschlackers

Also Published As

Publication number Publication date
EP0152589A3 (fr) 1987-03-04
DE8403135U1 (de) 1984-05-30

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Inventor name: LORENZ, PETER

Inventor name: MAGNUS, ADOLF, ING-GRAD.