EP0879994A2 - Dispositif permettant de prélever et refroidir les cendres du lit d'un appareil de combustion à lit fluidisé - Google Patents

Dispositif permettant de prélever et refroidir les cendres du lit d'un appareil de combustion à lit fluidisé Download PDF

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Publication number
EP0879994A2
EP0879994A2 EP98108736A EP98108736A EP0879994A2 EP 0879994 A2 EP0879994 A2 EP 0879994A2 EP 98108736 A EP98108736 A EP 98108736A EP 98108736 A EP98108736 A EP 98108736A EP 0879994 A2 EP0879994 A2 EP 0879994A2
Authority
EP
European Patent Office
Prior art keywords
cooled
housing
over
tables
floors
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.)
Ceased
Application number
EP98108736A
Other languages
German (de)
English (en)
Other versions
EP0879994A3 (fr
Inventor
Bernhard Michelbrink
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.)
BBP Energy GmbH
Original Assignee
BBP Energy GmbH
Babcock Kraftwerkstechnik 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 Energy GmbH, Babcock Kraftwerkstechnik GmbH filed Critical BBP Energy GmbH
Publication of EP0879994A2 publication Critical patent/EP0879994A2/fr
Publication of EP0879994A3 publication Critical patent/EP0879994A3/fr
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/06—Heat-exchange apparatus employing moving conduits the movement being reciprocating or oscillating
    • 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

Definitions

  • the invention relates to a device for removal and Cooling bed ash from a fluidized bed furnace with the Features of the preamble of claim 1.
  • Such a device has the task that is 870 ° C. Pull off bed ash from the fluidized bed combustion and dry cool to below 300 ° C.
  • Screw conveyor with a water-cooled, in one Cooled housing arranged conveyor screw known. At Leakage in the cooling system of these screw conveyors can do this Cooling water penetrate into the interior and the bed ash moisten. The moistened ash is on the housing wall and Bake in the screw conveyor so that the conveyor can become blocked and come to a standstill.
  • Fluidized bed boilers known from Rieselkühler Have coils through which cooling water flows.
  • These pipe coils are subject to contact with the bed ash increased wear due to erosion.
  • the invention has for its object a device for dry removal and for cooling bed ash To create fluidized bed furnaces that are simple in construction and is insensitive to wear.
  • the scraper chain conveyor of the device according to the invention is a robust, wear-resistant conveyor, and the cooled floor over which the scraper chain runs is in easy to provide with wear-resistant plates.
  • the arrangement of several chilled floors are within the Housing of the conveyor sufficient heat exchanger surfaces created so that even large amounts of bed ash are sufficient can be cooled. Due to the staggered arrangement of the Tables forming chilled floors remain even at high Throughput the layer height on each table proportionately low, so that good cooling of the bed ash can be achieved is.
  • Vortex combustion chamber 1 shown in the by blowing Combustion and fluidization air from a fluidized bed Fuel and bed ash is maintained. Part of this Bed ash must be removed from the system. To this end is the bottom 2 of the vortex combustion chamber 1 with several Ash extraction pipes 3 provided in a closed housing 4 open into a conveyor for conveying and cooling the circulates dry removed bed ash.
  • the conveyor is designed as a scraper chain conveyor 5.
  • This Scraper chain conveyor 5 contains two chains rotating in parallel 6, which are connected at intervals by scrapers 7 are. 1, 3 and 4, the chains 6 are by a line indicated, the arrows 8 indicate the direction of conveyance.
  • Each Chain 6 is around pulleys 9 and one with a drive provided drive wheel 10 out.
  • the housing 4 is provided with a discharge 11.
  • the chains 6 connected by the scraper 7 Scraper chain conveyor 5 are guided over a floor 12.
  • a floor 12 is provided with a double jacket, which has an inflow 13 and a drain 14 for a coolant, e.g. B. water having.
  • the top plate of the bottom 12 is wear-resistant executed.
  • the floors 12 are in the conveying direction into individual tables 16 divided, which are spaced from each other.
  • a slot 17 is formed in each case between two tables 16. Through this slot 17 falls through the scraper chain conveyor 5 over the table 16 promoted bed ash on a table 16 of the deeper lying cooled floor 12 or on the floor 15 of the Housing 4.
  • the tables 16 of the cooled floors 12 are in the individual Layers offset from each other. This is where in the conveying direction of the rear end of a table 16 and thus also the slot 17 through which the bed ash falls, above the in Direction of conveyance at the front end of the table below 16.
  • the direction of movement that the bed ash during the Funding through the floors 12 through the housing 4 takes, lets follow each other using the vertical arrows 18.
  • FIGS. 3 and 4 show the same division and arrangement of the tables 16 as shown in FIG. 1, only the chain guide is different. So are according to Fig. 3 in a common housing 4 two scraper chain conveyor 5, 5 'each with its own drive. The one Scraper chain conveyor 5 is over two cooled floors 12 and other scraper chain conveyor 5 'is via a cooled floor 12 and the bottom 15 of the housing 4 out. Because the arrangement and the division of the cooled floors 12 into tables 16 is not the direction of movement of the bed ash remains the same same as in Fig. 1.
  • this contains directly under the Vortex combustion chamber 1 arranged housing 4 two cooled floors 12. A scraper chain conveyor 5 is guided over these floors 12. Under this first housing 4 is a further housing 4 ' arranged, in which a scraper chain conveyor 5 'is also guided is. This further housing 4 'has a drop 11 Mistake.
  • the two housings 4, 4 ' are by chutes 19th interconnected, over which the bed pocket from the top Housing 4 gets into the further housing 4. Any of these Chutes 19 connects to a slot 17 between the Tables 16 of the lower cooled floor 12 in the upper housing 4 on.
  • the chutes 19 each open above the front end a table 16 arranged in the upper level in the further housing 4 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Pusher Or Impeller Conveyors (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
EP98108736A 1997-05-21 1998-05-14 Dispositif permettant de prélever et refroidir les cendres du lit d'un appareil de combustion à lit fluidisé Ceased EP0879994A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19721206 1997-05-21
DE19721206A DE19721206A1 (de) 1997-05-21 1997-05-21 Vorrichtung zur Entnahme und Kühlung von Bettasche aus einer Wirbelschichtfeuerung

Publications (2)

Publication Number Publication Date
EP0879994A2 true EP0879994A2 (fr) 1998-11-25
EP0879994A3 EP0879994A3 (fr) 1999-10-06

Family

ID=7830055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108736A Ceased EP0879994A3 (fr) 1997-05-21 1998-05-14 Dispositif permettant de prélever et refroidir les cendres du lit d'un appareil de combustion à lit fluidisé

Country Status (5)

Country Link
US (1) US6082442A (fr)
EP (1) EP0879994A3 (fr)
JP (1) JPH11101428A (fr)
CN (1) CN1201880A (fr)
DE (1) DE19721206A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952397A1 (fr) * 1998-04-22 1999-10-27 Karl Becker Transporteur pour enlever un produit en vrac d'une chaudière
WO2010049367A3 (fr) * 2008-10-31 2011-06-16 Clyde Bergemann Drycon Gmbh Procédé et dispositif d'évacuation de matière à partir d'une chaudière de combustion
DE102009060305A1 (de) 2009-12-23 2011-06-30 Clyde Bergemann DRYCON GmbH, 46485 Fördereinrichtung für heißes Material und Verfahren zu dessen Betrieb
CN104419471A (zh) * 2013-08-27 2015-03-18 山西省霍州市化学工业有限责任公司 一种煤气化炉外防流装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20020353A1 (it) * 2002-02-21 2003-08-21 Magaldi Ricerche & Brevetti Estrattore/raffreddatore di materiali sfusi mediante l'utilizzo di unmezzo di nastro trasportatore dotato di piastre forate e provviste di
IT1396049B1 (it) * 2009-09-24 2012-11-09 Magaldi Ind Srl Sistema di estrazione e trasporto di ceneri leggere mediante trasportatore a nastro in acciaio.
CN103742930B (zh) * 2014-01-13 2016-05-04 福建龙净环保股份有限公司 一种干式排渣机及其清扫链装置
CA2919936C (fr) * 2015-02-10 2023-06-27 Hitachi Zosen Inova Ag Methode de refroidissement de residus solides d'un procede de combustion
CN106931456B (zh) * 2017-03-20 2019-03-01 吴联凯 一种悬挂式全封闭除渣系统
DE102018133070B4 (de) * 2018-12-20 2021-08-05 i +M GmbH & Co. KG Innovation und Management Vorrichtung zum Trocknen von Klärschlamm
AT523858B1 (de) * 2020-05-19 2022-04-15 Andreas Fritsche Vorrichtung zum Trocknen von Schüttgut

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DE7336338U (de) * 1974-01-24 Steinmueller L & C Gmbh Naßentascher
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US676930A (en) * 1901-02-25 1901-06-25 Elijah Fleet Wees Ash-remover for boilers.
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GB444157A (en) * 1934-09-27 1936-03-16 Nat Equip Co Improvements in and relating to mechanism for handling confections for the cooling thereof
GB497489A (en) * 1937-06-24 1938-12-21 Arthur Guy Enock Improvements in apparatus for heating and cooling liquid or other foods in bottles, jars or similar vessels
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DE1421659A1 (de) * 1962-09-19 1968-10-31 Koppers Gmbh Heinrich Einrichtung zur Ausschleusung von Vergasungsrueckstaenden aus unter erhoehtem Druck stehenden Raeumen
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None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952397A1 (fr) * 1998-04-22 1999-10-27 Karl Becker Transporteur pour enlever un produit en vrac d'une chaudière
WO2010049367A3 (fr) * 2008-10-31 2011-06-16 Clyde Bergemann Drycon Gmbh Procédé et dispositif d'évacuation de matière à partir d'une chaudière de combustion
CN102301184A (zh) * 2008-10-31 2011-12-28 克莱德贝尔格曼干控制有限公司 用于输送来自燃烧锅炉的材料的方法和装置
CN102301184B (zh) * 2008-10-31 2014-10-29 克莱德贝尔格曼干控制有限公司 用于输送来自燃烧锅炉的材料的方法和装置
DE102009060305A1 (de) 2009-12-23 2011-06-30 Clyde Bergemann DRYCON GmbH, 46485 Fördereinrichtung für heißes Material und Verfahren zu dessen Betrieb
CN104419471A (zh) * 2013-08-27 2015-03-18 山西省霍州市化学工业有限责任公司 一种煤气化炉外防流装置

Also Published As

Publication number Publication date
CN1201880A (zh) 1998-12-16
US6082442A (en) 2000-07-04
JPH11101428A (ja) 1999-04-13
EP0879994A3 (fr) 1999-10-06
DE19721206A1 (de) 1998-11-26

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