EP0971170B1 - Method for dewatering ash - Google Patents

Method for dewatering ash Download PDF

Info

Publication number
EP0971170B1
EP0971170B1 EP99112623A EP99112623A EP0971170B1 EP 0971170 B1 EP0971170 B1 EP 0971170B1 EP 99112623 A EP99112623 A EP 99112623A EP 99112623 A EP99112623 A EP 99112623A EP 0971170 B1 EP0971170 B1 EP 0971170B1
Authority
EP
European Patent Office
Prior art keywords
ash
wet
water
removal device
ash removal
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 - Lifetime
Application number
EP99112623A
Other languages
German (de)
French (fr)
Other versions
EP0971170A2 (en
EP0971170A3 (en
Inventor
Karl Bleckmann
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.)
Babcock Borsig Service GmbH
Original Assignee
BBP Service 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
Application filed by BBP Service GmbH filed Critical BBP Service GmbH
Publication of EP0971170A2 publication Critical patent/EP0971170A2/en
Publication of EP0971170A3 publication Critical patent/EP0971170A3/en
Application granted granted Critical
Publication of EP0971170B1 publication Critical patent/EP0971170B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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, the combustion of dusty coal in one Coal dust combustion occurs, according to the preamble of Claim 1.
  • a method is from the EP-A-0 029 235 is known.
  • EP-A-0 029 235 there is a system for removing ash described from a coal-fired combustion chamber Will get removed.
  • the ash comes out of the Combustion chamber in an ash funnel filled with water, from which periodically or batchwise with the help of a stream of water is hydraulically withdrawn.
  • the hydraulically conveyed ash is fed into a container from which it is used for dewatering is given a vibrator. After treating the Ashes in the vibrating drainer reach their ashes again initial water content.
  • the drainage of the ashes in the Schwingentskysserer thus only serves to remove the Funded water added.
  • 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-A-2 856 431 and DE-C-3 013 668 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 difficulties encountered hitherto could be effectively remedied.
  • the coal dust combustion is operated so that the The nitrogen oxide content 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.

Landscapes

  • 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. Ein solches Verfahren ist aus der EP-A-0 029 235 bekannt.The invention relates to a method for dewatering ash, the combustion of dusty coal in one Coal dust combustion occurs, according to the preamble of Claim 1. Such a method is from the EP-A-0 029 235 is known.

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 Schwierigkeiten mit sich 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 caused difficulties due to the high water content in the further conveyance, bunkering and marketing of the ash.

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 conveyances at an incline of greater than 10 ° were only possible to a limited extent or not at all. The Bunkering of the ashes in coarse ash silos was done with that Solids contaminated drip water at the silo outlet with strong Contamination connected below the silo. The Further transportation by truck brought further pollution due to a 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 ashes 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.

In der EP-A-0 029 235 ist ein System zur Beseitigung von Asche beschrieben, die aus einer mit Kohle gefeuerten Brennkammer entfernt wird. Bei diesem System gelangt die Asche aus der Brennkammer in einen mit Wasser gefüllten Aschetrichter, aus dem sie periodisch oder absatzweise mit Hilfe eines Wasserstromes hydraulisch abgezogen wird. Die hydraulisch geförderte Asche wird einem Behälter zugeführt, aus dem sie zur Entwässerung in einen Schwingentwässerer gegeben wird. Nach der Behandlung der Asche in dem Schwingentwässerer erreicht die Asche wieder ihren anfänglichen Wasseranteil. Die Entwässerung der Asche in dem Schwingentwässerer dient damit nur der Entfernung des als Fördermittel zugesetzten Wassers.In EP-A-0 029 235 there is a system for removing ash described from a coal-fired combustion chamber Will get removed. With this system, the ash comes out of the Combustion chamber in an ash funnel filled with water, from which periodically or batchwise with the help of a stream of water is hydraulically withdrawn. The hydraulically conveyed ash is fed into a container from which it is used for dewatering is given a vibrator. After treating the Ashes in the vibrating drainer reach their ashes again initial water content. The drainage of the ashes in the Schwingentwässerer thus only serves to remove the Funded water added.

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-A-2 856 431 und der DE-C-3 013 668 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 Schwierigkeiten wirksam behoben werden konnten.Vibration drainers are e.g. B. from DE-A-2 856 431 and DE-C-3 013 668 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 difficulties encountered hitherto could be effectively remedied.

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 so that the The nitrogen oxide content 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)

  1. Method of dewatering ash, which arises in the combustion of powdered coal in a pulverised coal firing, is cooled after discharge from the pulverised coal firing in a wet ash removal device (2) filled with water and is given to a vibratory dewatering device (14), characterised in that the ash occurring in the pulverised coal firing in finely grained and not molten form, absorbing water in the wet ash removal device (2) and mechanically discharged from the wet ash removal device (2) by way of a rising part of the wet ash removal device, is delivered to the vibratory dewatering device (14) freed there from the adhering water and passed on in a state capable of transport and further processing.
  2. Method according to claim 1, characterised in that the ash is fed to the vibratory dewatering device (14) directly after discharge from the wet ash removal device (2).
  3. Method according to claim 1, characterised in that the ash is fed to the vibratory dewatering device (14) after conveying by way of a conveyor or after intermediate storage in a silo.
  4. Method according to one of claims 1 to 3 with use of a wet ash removal device (2) provided with an overflow (5), characterised in that the water overflow of the vibratory dewatering device (14) is fed to a cyclone installation, that the solid material discharge of the cyclone installation is fed back to the vibratory dewatering device (14) and that the overflow (5) of the wet ash removal device (2) is similarly fed to the cyclone installation.
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)

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

Family

ID=7873613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112623A Expired - Lifetime EP0971170B1 (en) 1998-07-10 1999-07-02 Method for dewatering ash

Country Status (6)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048959A1 (en) * 2005-10-13 2007-04-19 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Method for processing ash used in a furnace comprises feeding a replacement fuel component/ash mixture to a self-cleaning oscillating grate for classification, feeding to a dewatering/fine classification unit and further processing
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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048960B4 (en) * 2005-10-13 2007-12-06 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Process for dewatering an ash / water mixture and dewatering plant
CN102287838B (en) * 2011-08-08 2013-03-20 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
WO2017092777A1 (en) 2015-12-03 2017-06-08 Kronos International, Inc. Method and device for improved solid-liquid filtration of filter cakes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2325923C2 (en) * 1970-01-22 1982-04-01 Deutsche Babcock Ag, 4200 Oberhausen Wet ashtray for coal dust combustion chambers
DE2812003A1 (en) * 1978-03-18 1979-09-20 Ver Kesselwerke Ag Hot slat, esp. from waste incinerator, is cooled in trough - with water recycled back to trough after cooling and filtering
DE2856431A1 (en) * 1978-12-28 1980-07-31 Schauenburg Masch Sand dewatering and desliming - in Dorrtyde thickener and vibratory dewatering screen
CA1145617A (en) * 1979-11-16 1983-05-03 Combustion Engineering, Inc. Pretreatment to dewater bottom ash from a stem generator firing solid fuels
DE3013668C2 (en) * 1980-04-09 1982-11-18 Schauenburg Maschinen- und Anlagen-Bau GmbH, 4330 Mülheim Device for the wet processing and dewatering of sand
US4503783A (en) * 1983-07-11 1985-03-12 General Kinematics Corporation Furnace ash air seal
DE4041381C1 (en) * 1990-12-21 1992-01-09 Martin Gmbh Fuer Umwelt- Und Energietechnik, 8000 Muenchen, De Slag dewatering chute - has water acting as pusher with fitted disbalancing generator
JPH1038250A (en) * 1996-07-24 1998-02-13 Mitsui Eng & Shipbuild Co Ltd Thermally decomposed residue separating device in waste treatment equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048959A1 (en) * 2005-10-13 2007-04-19 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Method for processing ash used in a furnace comprises feeding a replacement fuel component/ash mixture to a self-cleaning oscillating grate for classification, feeding to a dewatering/fine classification unit and further processing
DE102005048959B4 (en) * 2005-10-13 2008-04-10 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Process for processing ash
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

Also Published As

Publication number Publication date
DE59903515D1 (en) 2003-01-09
EP0971170A2 (en) 2000-01-12
ATE228630T1 (en) 2002-12-15
DE19830943A1 (en) 2000-01-13
ES2188066T3 (en) 2003-06-16
DK0971170T3 (en) 2003-03-10
DE19830943B4 (en) 2010-09-09
PT971170E (en) 2003-04-30
EP0971170A3 (en) 2000-03-01

Similar Documents

Publication Publication Date Title
CN102549369B (en) Slag discharge system
US3886063A (en) Wet concrete separator
DE2913524A1 (en) PROCESS AND EQUIPMENT FOR TREATMENT OF METALLURGICAL SLAG
EP0349490A1 (en) Method and device for preparing granulates
DE102009014717B4 (en) Method and device for processing dusty and liquid / pasty waste materials and for producing a mixed fuel
EP0971170B1 (en) Method for dewatering ash
CA1258792A (en) Ballast cleaning machine
US5560495A (en) Transporter for aggregate produced during reprocessing of residual concrete
CN214682229U (en) Dust fall mechanism for coal mill
DE29825240U1 (en) Wet pocket system used in steam generator, has wet pocket formed with rising portion for mechanically discharging fine-grain and unmelted ash, and feeding unit for transferring and transporting water and ash for subsequent treatment
DE19631442C2 (en) Process for separating the material constituents of cellulose and adsorbent that form the filling of packing units
DE102005048960A1 (en) Method for removal of water from ashes and water mix created in coal burning power station, comprises use of self cleaning shaking grate
GB2566560A (en) Slurry Handling Apparatus
DE19617501C2 (en) Process for the separation of components from municipal residues
US3042208A (en) Combined washer, separator and grader for loose materials
KR100488476B1 (en) Crushing and assorting apparatus of construction waste
DE3739708C1 (en) Apparatus for deashing firing boilers and the like
CA1068579A (en) Apparatus for separating tobacco from cigarettes
JP3647101B2 (en) Sand garbage separation and unloading device
CN215587103U (en) Dust device and rubble processing equipment
RU2099214C1 (en) Railway gondola car hydraulic cleaning method
DE20005259U1 (en) Device for retrofitting wet ash systems to incinerators for dewatering wet ash
JP2005114223A (en) Granularity adjustment method in boiler furnace bottom ash processing and granularity adjustment device used therefor
DE10015435A1 (en) Wet ash dewatering method, using air curtain generated by perforated tube above inclined section of scraper belt
JPH08231028A (en) Belt conveyor adhered material recovery equipment

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBP ENERGY GMBH

17P Request for examination filed

Effective date: 20000516

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20011218

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBP SERVICE GMBH

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021127

REF Corresponds to:

Ref document number: 228630

Country of ref document: AT

Date of ref document: 20021215

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

RTI1 Title (correction)

Free format text: METHOD FOR DEWATERING ASH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59903515

Country of ref document: DE

Date of ref document: 20030109

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030128

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20030400706

Country of ref document: GR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20030218

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2188066

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030702

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030702

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 0971170E

Country of ref document: IE

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030828

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20040728

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050702

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59903515

Country of ref document: DE

Representative=s name: LUEDTKE, FRANK, DIPL.-ING., DE

Effective date: 20120614

Ref country code: DE

Ref legal event code: R081

Ref document number: 59903515

Country of ref document: DE

Owner name: BABCOCK BORSIG STEINMUELLER GMBH, DE

Free format text: FORMER OWNER: BABCOCK BORSIG SERVICE GMBH, 46049 OBERHAUSEN, DE

Effective date: 20120614

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20180829

Year of fee payment: 20

Ref country code: DE

Payment date: 20180912

Year of fee payment: 20

Ref country code: FR

Payment date: 20180723

Year of fee payment: 20

Ref country code: IT

Payment date: 20180720

Year of fee payment: 20

Ref country code: NL

Payment date: 20180723

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180723

Year of fee payment: 20

Ref country code: DK

Payment date: 20180725

Year of fee payment: 20

Ref country code: GR

Payment date: 20180724

Year of fee payment: 20

Ref country code: GB

Payment date: 20180725

Year of fee payment: 20

Ref country code: FI

Payment date: 20180719

Year of fee payment: 20

Ref country code: SE

Payment date: 20180725

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20180718

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59903515

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20190701

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Effective date: 20190702

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20190702

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20190701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190701

Ref country code: PT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190711

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190703