EP0971170A2 - Method for dewatering ashes - Google Patents

Method for dewatering ashes Download PDF

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Publication number
EP0971170A2
EP0971170A2 EP99112623A EP99112623A EP0971170A2 EP 0971170 A2 EP0971170 A2 EP 0971170A2 EP 99112623 A EP99112623 A EP 99112623A EP 99112623 A EP99112623 A EP 99112623A EP 0971170 A2 EP0971170 A2 EP 0971170A2
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EP
European Patent Office
Prior art keywords
wet
ashes
ash
water
cyclone
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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.)
Granted
Application number
EP99112623A
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German (de)
French (fr)
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EP0971170B1 (en
EP0971170A3 (en
Inventor
Karl Bleckmann
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Babcock Borsig Service GmbH
Original Assignee
BBP Energy GmbH
Babcock Kraftwerkstechnik GmbH
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Publication of EP0971170A2 publication Critical patent/EP0971170A2/en
Publication of EP0971170A3 publication Critical patent/EP0971170A3/en
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Publication of EP0971170B1 publication Critical patent/EP0971170B1/en
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    • 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
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/26—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
    • F23J2700/001—Ash removal, handling and treatment means
    • 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
    • F23J2900/01005—Mixing water to ash

Definitions

  • the invention relates to a method for dewatering Ash that comes from burning coal in dust a coal dust combustion occurs, according to the preamble of Claim 1.
  • the invention is based, which in a Coal dust firing and cooled in a water bath Effective drainage of ashes.
  • Vibration drainers are e.g. B. from DE-OS 28 56 431 and DE-PS 30 13 668 known per se. So far, these vibratory drainage systems have been used for the dewatering, sieving and cleaning of sands. It was surprisingly found that the special ashes from a low- x coal dust burner can be dewatered to such an extent with the aid of such an oscillating dewatering system that the previously encountered difficulty could be effectively eliminated.
  • the coal dust combustion is operated in such a way that the content of nitrogen oxides in the flue gas is as low as possible.
  • the raw coal is largely ground and on the other hand, a combustion chamber temperature in the combustion chamber 1 complied with that below the melting point of that in the coal contained ashes.
  • the burning of coal The resulting ash falls fine-grained and dry means not melted on.
  • the ash reaches the combustion chamber 1 according to FIG Cooling in a wet handler 2.
  • the wet handler 2 exists from a trough 3 filled with extinguishing water, the one horizontal and a rising part.
  • the Wet handler 2 is with a water inlet 4, an overflow 5 and an emptying line 6.
  • For sealing against the outside atmosphere is the lower part of the walls of the Combustion chamber 1 extended by an immersion piece 7, which in the Immersed water bath inside the wet handkerchief 2.
  • a scraper chain conveyor 8 runs within the wet handler 2 around.
  • This scraper chain conveyor 8 carries the in the water bath chilled ash over a chute 9 at the end of the slope rising part of the wet handbag 2.
  • the carried out Ash is arranged from a below the chute 9
  • Inclined conveyor 10 conveyed to an ash silo 11.
  • the Feeder can also be omitted, and the ashes directly in the ash silo 11 are promoted.
  • the ash silo 11 is with provided a discharge member 12 through which the ash silo 11 a conveyor belt 13 or a transport vehicle is emptied.
  • a swingable Belong to the basic structure of the oscillating drainage 14 a swingable, provided with a swing drive 15 Sieve box 16 in which a sieve plate 17 is arranged.
  • the Screen box 16 has one on one end face Ejector 18 for the dewatered material. In the field of the other end is located above the sieve plate 17 a feed device 19 for the wet ash.
  • the dewatered ash is the discharge device 18 from the Vibration drainer 14 discharged and arrives at Conveyor belt 26, the z. B. promotes in a silo 27.
  • the Ashes show up in the vibratory drainage system 14 after the treatment such a water content that it is easy can be promoted and stored temporarily.
  • the dewatered ash is characterized by a uniform water content from the further processing of the Ashes relieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Saccharide Compounds (AREA)

Abstract

Ash from a powdered coal - fired furnace is cooled on leaving the furnace, in a wet sump (2) and the ash, containing up to 50% w/w moisture, is removed from the sump and dewatered in a vibratory sieve unit (14) prior to discharging for further processing.

Description

Die Erfindung betrifft ein Verfahren zur Entwässerung von Asche, die bei der Verbrennung von staubförmiger Kohle in einer Kohlenstaubfeuerung anfällt, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a method for dewatering Ash that comes from burning coal in dust a coal dust combustion occurs, according to the preamble of Claim 1.

Die Forderung nach einer NOx-armen Verbrennung von Brennstoffen führte zu einer feineren Aufmahlung der Rohkohle und zu Brennkammertemperaturen, die unterhalb des Schmelzpunktes der Asche liegen. Die in einer solchen Kohlenstaubfeuerung anfallende Asche ist entsprechend feinkörnig und nimmt bei der Kühlung in dem Wasserbad des Naßentaschers große Mengen an Wasser auf. Diese Asche brachte in der Vergangenheit aufgrund des hohen Wassergehaltes immer wieder Schwierigkeit bei der Weiterförderung, der Bunkerung und der Vermarktung der Asche.The requirement for a NO x combustion of fuels resulted in a finer grinding up the raw coal and combustion chamber temperatures which are below the melting point of the ash. The ash produced in such a coal dust combustion is correspondingly fine-grained and absorbs large amounts of water during cooling in the water handler's water bath. In the past, this ash always caused difficulties in the further conveyance, bunkering and marketing of the ash due to the high water content.

Die extrem nassen Aschen, deren Restfeuchte 50% und mehr betragen kann, konnten mit nachgeschalteten Gurtförderern schlecht weitergefördert werden. Darüber hinaus waren Verschmutzungen im gesamten Untertrum des Förderers nicht zu vermeiden. Steil- oder Schrägförderungen unter einer Neigung von größer als 10° waren nur bedingt oder gar nicht möglich. Die Bunkerung der Asche in Grobaschesilos war durch das mit Feststoffen belastete Tropfwasser am Siloauslauf mit starken Verschmutzungen unterhalb des Silos verbunden. Der Weitertransport mit Lastwagen brachte eine weitere Verschmutzung durch eine sich einstellende Nachentwässerung auf dem Fahrzeug auf dem gesamten Transportweg mit sich.The extremely wet ashes, their residual moisture 50% and more could be with downstream belt conveyors are badly promoted. Beyond that Contamination in the entire lower run of the conveyor is not allowed avoid. Steep or inclined conveying under one slope greater than 10 ° were only possible to a limited extent or not at all. The bunkering of the ashes in coarse ash silos was through that Solids contaminated drip water at the silo outlet with strong Contamination connected below the silo. The Further transportation by truck brought another Contamination due to subsequent drainage on the vehicle along the entire transport route.

Die oben genannten Schwierigkeiten konnten bislang nicht befriedigend gelöst werden. Eine Erhöhung der Brennkammertemperatur, die eine anders geartete Aschestruktur mit einer geringeren Neigung zur Aufnahme von Wasser ergeben hätte, scheiterte an der Forderung nach niedrigen Gehalten an NOx im Rauchgas. Auch eine Entwässerung der nassen Asche mit Hilfe von Zentrifugen oder Vakuumbandfiltern oder durch Entwässerungseinrichtungen unmittelbar am Naßentascher brachte keinen entscheidenden Erfolg.The difficulties mentioned above have not yet been satisfactorily solved. An increase in the combustion chamber temperature, which would have resulted in a different ash structure with a lower tendency to absorb water, failed due to the requirement for low NO x contents in the flue gas. Dewatering the wet ash with the aid of centrifuges or vacuum belt filters or by means of drainage devices directly on the wet handler did not bring any decisive success.

Der Erfindung liegt die Aufgabe zugrunde, die in einer Kohlenstaubfeuerung anfallende und in einem Wasserbad gekühlte Asche wirksam zu entwässern.The invention is based, which in a Coal dust firing and cooled in a water bath Effective drainage of ashes.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the characterizing Features of claim 1 solved. Advantageous configurations the invention are the subject of the dependent claims.

Schwingentwässerer sind z. B. aus der DE-OS 28 56 431 und der DE-PS 30 13 668 an sich bekannt. Diese Schwingentwässerer wurden bislang für die Entwässerung, Siebung und Reinigung von Sanden eingesetzt. Es zeigte sich überraschend, daß die besonderen Aschen aus einer Nox-armen Kohlenstaubfeuerung sich mit Hilfe eines derartigen Schwingentwässerers soweit entwässern lassen, daß die bislang aufgetretenen Schwierigkeit wirksam behoben werden konnten.Vibration drainers are e.g. B. from DE-OS 28 56 431 and DE-PS 30 13 668 known per se. So far, these vibratory drainage systems have been used for the dewatering, sieving and cleaning of sands. It was surprisingly found that the special ashes from a low- x coal dust burner can be dewatered to such an extent with the aid of such an oscillating dewatering system that the previously encountered difficulty could be effectively eliminated.

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen

Fig. 1
schematisch eine Naßentascheranlage,
Fig. 2
einen Schwingentwässerer in einer Naßentascheranlage und
Fig. 3
einen Schwingentwässerer an einer anderen Stelle innerhalb einer Naßentascheranlage.
Several embodiments of the invention are shown in the drawing and are explained in more detail below. Show it
Fig. 1
schematically a wet pocket machine,
Fig. 2
a swing dewater in a wet pocket system and
Fig. 3
a vibration drainer at another location within a wet pocket system.

Von einem Dampferzeuger ist nur der untere Teil einer Brennkammer 1 gezeigt, die mit einer Kohlenstaubfeuerung versehen ist. Die Kohlenstaubfeuerung wird so betrieben, daß der Gehalt an Stickoxiden im Rauchgas möglichst gering ist. Only the lower part of a steam generator is one Combustion chamber 1 shown with a coal dust combustion is provided. The coal dust combustion is operated in such a way that the content of nitrogen oxides in the flue gas is as low as possible.

Dazu wird einerseits die Rohkohle weitgehend aufgemahlen und andererseits in der Brennkammer 1 eine Brennkammertemperatur eingehalten, die unterhalb des Schmelzpunktes der in der Kohle enthaltenen Asche liegt. Die bei der Verbrennung der Kohle entstehende Asche fällt daher feinkörnig und trocken, das heißt nicht geschmolzen, an.On the one hand, the raw coal is largely ground and on the other hand, a combustion chamber temperature in the combustion chamber 1 complied with that below the melting point of that in the coal contained ashes. The burning of coal The resulting ash falls fine-grained and dry means not melted on.

Die Asche gelangt gemäß Fig. 1 aus der Brennkammer 1 zur Kühlung in einen Naßentascher 2. Der Naßentascher 2 besteht aus einen mit Löschwasser gefüllten Trog 3, der einen waagerechten und einen ansteigenden Teil aufweist. Der Naßentascher 2 ist mit einem Wasserzulauf 4, einem Überlauf 5 und einer Entleerleitung 6 versehen. Zur Abdichtung gegenüber der Außenatmosphäre ist der untere Teil der Wände der Brennkammer 1 durch ein Eintauchstück 7 verlängert, das in das Wasserbad innerhalb des Naßentaschers 2 eintaucht.The ash reaches the combustion chamber 1 according to FIG Cooling in a wet handler 2. The wet handler 2 exists from a trough 3 filled with extinguishing water, the one horizontal and a rising part. The Wet handler 2 is with a water inlet 4, an overflow 5 and an emptying line 6. For sealing against the outside atmosphere is the lower part of the walls of the Combustion chamber 1 extended by an immersion piece 7, which in the Immersed water bath inside the wet handkerchief 2.

Innerhalb des Naßentaschers 2 läuft ein Kratzkettenförderer 8 um. Dieser Kratzkettenförderer 8 trägt die in dem Wasserbad gekühlte Asche über einen Abwurf 9 am Ende des schräg ansteigenden Teil des Naßentaschers 2 aus. Die ausgetragene Asche wird von einem unterhalb des Abwurfes 9 angeordneten Schrägförderer 10 zu einem Aschesilo 11 gefördert. Der Schrägförderer kann auch entfallen, und die Asche direkt in den Aschesilo 11 gefördert werden. Der Aschesilo 11 ist mit einem Austragsorgan 12 versehen, über das der Aschesilo 11 auf ein Förderband 13 oder ein Transportfahrzeug entleert wird.A scraper chain conveyor 8 runs within the wet handler 2 around. This scraper chain conveyor 8 carries the in the water bath chilled ash over a chute 9 at the end of the slope rising part of the wet handbag 2. The carried out Ash is arranged from a below the chute 9 Inclined conveyor 10 conveyed to an ash silo 11. The Feeder can also be omitted, and the ashes directly in the ash silo 11 are promoted. The ash silo 11 is with provided a discharge member 12 through which the ash silo 11 a conveyor belt 13 or a transport vehicle is emptied.

Aufgrund ihrer besonderen Struktur nimmt die Asche bei der Kühlung innerhalb des Wasserbades des Naßentaschers 2 große Menge an Wasser auf. Dieser Wasseranteil, der bis zu 50% und mehr betragen kann, stört die Weiterförderung und die Bunkerung der Asche. Zu diesem Zweck ist innerhalb der Naßentascheranlage ein Schwingentwässerer 14 angeordnet. Dieser Schwingentwässerer 14 kann unmittelbar hinter dem Abwurf 9 des Naßentaschers 2 (Fig. 3), hinter dem Abwurf des Schrägförderers 10 oder, wie in Fig. 2 dargestellt, unterhalb des Aschesilos 11 angeordnet sein.Due to its special structure, the ash in the Cooling within the water bag of the wet handler 2 large Amount of water on. This water content of up to 50% and more can interfere with further funding and Bunkering the ashes. To this end, within the Wet pocket system arranged a swing dewater 14. This Schwingentwässerer 14 can immediately behind the Dropping 9 of the wet handkerchief 2 (Fig. 3), behind the dropping of the Inclined conveyor 10 or, as shown in Fig. 2, below of the ash silo 11 may be arranged.

Zum grundsätzlichen Aufbau des Schwingentwässerers 14 gehören ein schwingbarer, mit einem Schwingantrieb 15 versehener Siebkasten 16, in dem ein Siebboden 17 angeordnet ist. Der Siebkasten 16 besitzt an einer Stirnseite eine Abwurfeinrichtung 18 für das entwässerte Gut. Im Bereich der anderen Stirnseite befindet sich oberhalb des Siebbodens 17 eine Aufgabeeinrichtung 19 für die nasse Asche.Belong to the basic structure of the oscillating drainage 14 a swingable, provided with a swing drive 15 Sieve box 16 in which a sieve plate 17 is arranged. The Screen box 16 has one on one end face Ejector 18 for the dewatered material. In the field of the other end is located above the sieve plate 17 a feed device 19 for the wet ash.

Auf dem Siebboden 17 des Schwingentwässerers 14 wird von der aufgegebenen, nassen Asche das Wasser abgetrennt, das sich in einer Auffangwanne 20 sammelt, die unterhalb des Siebkastens 16 vorgesehen ist. An den unteren Teil der Auffangwanne 20 ist eine Leitung 21 angeschlossen, die zu einem Zyklon 22 oder einer aus mehreren Zyklonen bestehende Zyklonanlage geführt ist. In der Leitung 21 ist eine Pumpe 23 angeordnet, die das abgetrennte Wasser zu dem Zyklon 22 pumpt. In dem Zyklon 22 werden aus dem Wasser die Schwebstoffe abgetrennt, die über eine an den Feststoffaustrag des Zyklons 22 angeschlossene Leitung 24 zu dem Schwingentwässerer 14 zurückgeführt werden. Das gereinigte Wasser wird aus dem Zyklon 22 entweder abgeführt oder zur Auffangwanne 20 zurückgeführt und über den Auslaß 28 der Auffangwanne 20 abgezogen (Fig. 2). In den Zyklon 22 mündet auch eine mit dem Überlauf 5 des Naßentaschers 2 verbundene Leitung 25 ein. Die Reinigung des Löschwassers aus dem Naßentascher 2 kann damit in das System der Entwässerung der Asche eingebunden werden.On the sieve bottom 17 of the swing dewater 14 is from the abandoned, wet ash separated the water that is in a drip pan 20 that collects below the sieve box 16 is provided. At the bottom of the sump 20 is a line 21 connected to a cyclone 22 or a cyclone system consisting of several cyclones is. In the line 21, a pump 23 is arranged, which separated water pumps to the cyclone 22. In the cyclone 22 the suspended solids are separated from the water one connected to the solids discharge of the cyclone 22 Line 24 are returned to the oscillation drainage system 14. The purified water is removed from the cyclone 22 either dissipated or returned to the drip pan 20 and over the Outlet 28 of the drip pan 20 removed (Fig. 2). In the Cyclone 22 also opens one with the overflow 5 of the Wet handler 2 connected line 25. The cleaning of the Extinguishing water from the wet bagger 2 can thus enter the system the ash drainage.

Die entwässerte Asche wird die Abwurfeinrichtung 18 aus dem Schwingentwässerer 14 ausgetragen und gelangt auf ein Förderband 26, das sie z. B. in einen Silo 27 fördert. Die Asche weist nach der Behandlung in dem Schwingentwässerer 14 einen solchen Wassergehalt auf, daß sie ohne Schwierigkeiten weitergefördert und zwischengelagert werden kann. Außerdem zeichnet sich die so entwässerte Asche durch einen gleichmäßigen Wassergehalt aus, der die Weiterverarbeitung der Asche erleichtert.The dewatered ash is the discharge device 18 from the Vibration drainer 14 discharged and arrives at Conveyor belt 26, the z. B. promotes in a silo 27. The Ashes show up in the vibratory drainage system 14 after the treatment such a water content that it is easy can be promoted and stored temporarily. Moreover the dewatered ash is characterized by a uniform water content from the further processing of the Ashes relieved.

Claims (4)

Verfahren zur Entwässerung von Asche, die bei der Verbrennung von staubförmiger Kohle in einer Kohlenstaubfeuerung anfällt und nach dem Austrag aus der Kohlenstaubfeuerung in einem mit Wasser gefüllten Naßentascher (2) gekühlt wird, dadurch gekennzeichnet, daß die aus dem Naßentascher (2) ausgetragene Asche auf einen Schwingentwässerer (14) gegeben, dort von dem anhaftenden Wasser befreit und in einen transport- und weiterverarbeitungsfähigen Zustand überführt wird.Process for dewatering ashes used in the Burning dusty coal in one Coal dust combustion occurs and after discharge from the Coal dust burner in a filled with water Wet handbag (2) is cooled, characterized in that the ashes discharged from the wet ashtray (2) onto one Schwingententwasserer (14) given there by the adherent Free water and in a transport and processable state is transferred. verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Asche unmittelbar nach dem Abwurf aus dem Naßentascher (2) dem Schwingentwässerer (14) zugeführt wird.A method according to claim 1, characterized in that the Ashes immediately after dropping from the wet bag (2) is supplied to the oscillating drainage system (14). Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Asche nach der Förderung über einen Förderer oder nach einer Zwischenbunkerung in einem Silo dem Schwingentwässerer (14) zugeführt wird.A method according to claim 1, characterized in that the Ashes after funding through a sponsor or after an intermediate bunker in a silo Vibratory drainage (14) is supplied. Verfahren nach einem der Ansprüche 1 bis unter Verwendung eines mit einem Überlauf (5) versehenen Naßentaschers (2), dadurch gekennzeichnet, daß der Wasserüberlauf des Schwingentwässerers (14) einer Zyklonanlage zugeführt wird, daß der Feststoffaustrag der Zyklonanlage dem Schwingentwässerer (14) zurückgeführt wird und daß der Überlauf (5) des Naßentaschers (2) ebenfalls der Zyklonanlage zugeführt wird.Method according to one of claims 1 to using a wet handler (2) provided with an overflow (5), characterized in that the water overflow of the Vibrating dewater (14) is fed to a cyclone system, that the solids discharge from the cyclone plant Schwingentwässerer (14) is returned and that the Overflow (5) of the wet handbag (2) also the Cyclone plant is fed.
EP99112623A 1998-07-10 1999-07-02 Method for dewatering ash Expired - Lifetime EP0971170B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19830943A DE19830943B4 (en) 1998-07-10 1998-07-10 Process for dewatering ash
DE19830943 1998-07-10

Publications (3)

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EP0971170A2 true EP0971170A2 (en) 2000-01-12
EP0971170A3 EP0971170A3 (en) 2000-03-01
EP0971170B1 EP0971170B1 (en) 2002-11-27

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EP (1) EP0971170B1 (en)
AT (1) ATE228630T1 (en)
DE (2) DE19830943B4 (en)
DK (1) DK0971170T3 (en)
ES (1) ES2188066T3 (en)
PT (1) PT971170E (en)

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DE102005048960A1 (en) * 2005-10-13 2007-04-26 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Method for removal of water from ashes and water mix created in coal burning power station, comprises use of self cleaning shaking grate
CN102287838A (en) * 2011-08-08 2011-12-21 鞍钢集团矿业公司 Slag removal box of heavy frame chain slag remover
CN104162479A (en) * 2014-06-12 2014-11-26 煤炭工业济南设计研究院有限公司 Movable sieve waste rock discharge system slime water treatment process and device

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DE102005048959B4 (en) * 2005-10-13 2008-04-10 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Process for processing ash
WO2017092777A1 (en) 2015-12-03 2017-06-08 Kronos International, Inc. Method and device for improved solid-liquid filtration of filter cakes
RU191125U1 (en) * 2019-03-19 2019-07-25 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный аграрный университет имени П.А. Столыпина" DEVICE FOR GRAIN DRYING

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DE102005048960A1 (en) * 2005-10-13 2007-04-26 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Method for removal of water from ashes and water mix created in coal burning power station, comprises use of self cleaning shaking grate
DE102005048960B4 (en) * 2005-10-13 2007-12-06 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Process for dewatering an ash / water mixture and dewatering plant
CN102287838A (en) * 2011-08-08 2011-12-21 鞍钢集团矿业公司 Slag removal box of heavy frame chain slag remover
CN104162479A (en) * 2014-06-12 2014-11-26 煤炭工业济南设计研究院有限公司 Movable sieve waste rock discharge system slime water treatment process and device

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DE59903515D1 (en) 2003-01-09
ATE228630T1 (en) 2002-12-15
PT971170E (en) 2003-04-30
DE19830943A1 (en) 2000-01-13
EP0971170B1 (en) 2002-11-27
EP0971170A3 (en) 2000-03-01
DK0971170T3 (en) 2003-03-10
ES2188066T3 (en) 2003-06-16
DE19830943B4 (en) 2010-09-09

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