EP1371902A1 - Procédé et appareil pour incinérer de la boue flottante - Google Patents

Procédé et appareil pour incinérer de la boue flottante Download PDF

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Publication number
EP1371902A1
EP1371902A1 EP03090164A EP03090164A EP1371902A1 EP 1371902 A1 EP1371902 A1 EP 1371902A1 EP 03090164 A EP03090164 A EP 03090164A EP 03090164 A EP03090164 A EP 03090164A EP 1371902 A1 EP1371902 A1 EP 1371902A1
Authority
EP
European Patent Office
Prior art keywords
sludge
floating
line
cake
floating sludge
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.)
Granted
Application number
EP03090164A
Other languages
German (de)
English (en)
Other versions
EP1371902B1 (fr
Inventor
Reiner Schommer
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.)
Berliner Wasserbetriebe Anstalt des Offentlichen Rechts
Original Assignee
Berliner Wasserbetriebe Anstalt des Offentlichen Rechts
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 Berliner Wasserbetriebe Anstalt des Offentlichen Rechts filed Critical Berliner Wasserbetriebe Anstalt des Offentlichen Rechts
Publication of EP1371902A1 publication Critical patent/EP1371902A1/fr
Application granted granted Critical
Publication of EP1371902B1 publication Critical patent/EP1371902B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/70—Blending
    • F23G2201/702—Blending with other waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50209—Compacting waste before burning

Definitions

  • the invention relates to a method for burning swimming sludge and a Device for carrying out the process involving sewage sludge incineration Find application.
  • the swimming mud is then dewatered to reduce weight and basically disposed of outside a sewage treatment plant or a recycling process, for example, by producing industrial fat.
  • floating materials are dissolved by adding chemicals.
  • the proportion of floating plastics is not dissolved and builds up with it the known disadvantages as a floating blanket in the post-thickener. by virtue of of the fluctuating proportion of soluble floating substances is used to ensure the Process always carried out an excess chemical dosage.
  • the excess chemical passes through the Central recycling in the clarification process and leads to an increase in chemical Oxygen demand and thus an economic burden due to the higher Oxygenation in the revitalization or in sewage treatment plants without a biological purification stage for loading the clear water drain.
  • floating sludge is used Components mixed in and ultimately composted.
  • the minimization of odor emissions requires the user to mix in quickly with easily rotable Material to limit a digestion process.
  • the recycling is not at Producer carried out, since this only a part of the required material components supplies.
  • the energetic use of the floating materials is, as far as procedural possible at all, not take place at the producer.
  • the object of the invention is to provide a method and an apparatus for burning Specify floating sludge, which is a reduction in pipeline pressure loss and minimizing the additional fuel requirement with sewage sludge incineration enable.
  • the object is achieved in that the floating sludge is introduced into a floating sludge line via a conveying device.
  • the floating sludge is then metered into the sludge cake line with the sludge cake and fed together via the sludge cake line to the fluidized bed incinerator and then burned.
  • the metering takes place via an annular nozzle, which distributes the material evenly Pipe scope allows, or a single point metering. Since the condensed puncture-proof sludge cake does not mix with the flowable swimming sludge, a partial one is formed between the pipe wall and the sludge cake Sliding film. The pipe friction losses are reduced and by the sliding film thus the energy required for pumping the sludge cake is reduced.
  • the swimming mud is burned exothermically and contrary to the mud cake this minimizes the need for additional fuel when burning the Mud cake.
  • a pre-pressing device with an eccentric screw, in which the floating sludge is located, is arranged in front of a floating sludge line.
  • This floating sludge line is connected to a sludge cake line and ends in a fluidized bed furnace via several sludge cake feed lances.
  • the mud cake feed lances are evenly distributed over the circumference of the fluidized bed incinerator.
  • a pressure gauge for measuring the pipeline pressure and an induction measuring device for measuring the volume flow are attached to the floating sludge line and the sludge cake line.
  • the invention is explained in more detail below using an exemplary embodiment in FIG. 1.
  • the discharge screw 2 installed in a floating sludge storage container 1 conveys the floating substances into the transfer hopper of an eccentric screw pump 3 with a pre-pressing device 4.
  • the pipe pressure indicated by the pressure gauge 5 in the floating sludge pipe 6 rises Ball valve 8 opened and the conveyor path into the sludge cake line released.
  • the non-return valve 9 prevents the backflow of sludge cake into the floating sludge line 6 in the event of a pump failure.
  • the floating sludge volume flow measured by means of an induction measuring device 10 is adjusted by regulating the pump speed, in accordance with the additional energy demand momentary during the combustion process.
  • the sludge cake conveyed by the sludge cake pump 11 meets the floating sludge at the integration of the floating sludge line.
  • the floating sludge is distributed on the circumference of the sludge cake line 13 by means of a single-point metering 12. Due to the high compression of the sludge cake, the floating sludge does not mix with the sludge cake, but forms a partial sliding film between the pipe wall and the sludge cake. The occurring reduction in pipe friction losses requires the sludge cake pump 11 to be reduced to the original sludge cake volume flow, which is continuously measured by means of an induction measuring device 14.
  • the sludge cake line 13 divides in the further course and opens into several, evenly distributed over the circumference of the fluidized bed combustion furnace 15 Mud cake feed lances 16.
  • the fluidized bed itself ensures a quick and Even distribution and mixing of floating sludge and sludge cake. Due to the high calorific value of the sludge, the support oil firing in the form of heating oil according to the desired firing temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Treatment Of Sludge (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
EP03090164A 2002-06-11 2003-05-28 Procédé et appareil pour incinérer de la boue flottante Expired - Lifetime EP1371902B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10226322 2002-06-11
DE10226322A DE10226322B4 (de) 2002-06-11 2002-06-11 Verfahren und Vorrichtung zum Verbrennen von Schwimmschlamm

Publications (2)

Publication Number Publication Date
EP1371902A1 true EP1371902A1 (fr) 2003-12-17
EP1371902B1 EP1371902B1 (fr) 2007-06-27

Family

ID=29557803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03090164A Expired - Lifetime EP1371902B1 (fr) 2002-06-11 2003-05-28 Procédé et appareil pour incinérer de la boue flottante

Country Status (3)

Country Link
EP (1) EP1371902B1 (fr)
AT (1) ATE365893T1 (fr)
DE (2) DE10226322B4 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917666A1 (de) * 1969-04-05 1970-10-15 Wintershall Ag Verfahren zur Verfeuerung von pumpfaehigen,durch Feststoffe verunreinigten Gemischen
DE3103417A1 (de) * 1981-02-02 1982-08-12 Saarberg-Fernwärme GmbH, 6600 Saarbrücken Verfahren und vorrichtung zur oxidation von festen stoffen und waessrigen schlaemmen
DE3307509A1 (de) * 1983-03-03 1984-09-06 Adolf H. 7322 Donzdorf Borst Verfahren zur wirtschaftlichen beseitigung von schwimmschlamm in abwasserklaeranlagen
DE3440754A1 (de) * 1984-11-08 1986-05-07 Günther 7900 Ulm Abel Verfahren und anlage zur entsorgung und verwertung von klaerschlamm und biomuell
DE4116773C1 (en) * 1991-05-23 1993-04-01 Uhde Gmbh, 4600 Dortmund, De Appts. for single stage oxidn. of combustible aq. sewage sludge with heat generation - has conical reaction chamber with upper sepn. chamber and with central lower air inlet and solid and/or liq. fuel outlet

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2331585C3 (de) * 1973-06-20 1979-12-13 Netzsch-Mohnopumpen Gmbh, 8672 Selb Exzenterschneckenpumpe
DE3708079C2 (de) * 1987-03-13 1995-05-18 Rompf Klaerwerkeinrichtungen G Verfahren und Vorrichtung zum Behandeln von Schwimmschlamm
DE3919350C1 (en) * 1989-06-09 1990-07-12 Krc Umwelttechnik Gmbh Appts. for clarifying clear slurry - comprises heating and de-watering slurry, evaporating filtrate and adding concentrate to de-watering stage
DE19737438C1 (de) * 1997-08-21 1999-01-07 Ver Energiewerke Ag Verfahren und Anordnung zum geregelten Eintrag von pastösen Stoffen, insbesondere Klärschlamm, über Schlammlanzen in eine Brennkammer oder in Kohlemühlen
DE10015441A1 (de) * 1999-03-29 2000-10-05 Gerd Meurer Umwelttechnologie Verfahren und Vorrichtung für die Behandlung von biologischem Schwimmschlamm
DE19923108A1 (de) * 1999-05-19 2000-11-23 Fraunhofer Ges Forschung Verfahren zur Abtrennung unterschiedlicher verwertbarer Materialfraktionen aus gemischtem Abfall

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917666A1 (de) * 1969-04-05 1970-10-15 Wintershall Ag Verfahren zur Verfeuerung von pumpfaehigen,durch Feststoffe verunreinigten Gemischen
DE3103417A1 (de) * 1981-02-02 1982-08-12 Saarberg-Fernwärme GmbH, 6600 Saarbrücken Verfahren und vorrichtung zur oxidation von festen stoffen und waessrigen schlaemmen
DE3307509A1 (de) * 1983-03-03 1984-09-06 Adolf H. 7322 Donzdorf Borst Verfahren zur wirtschaftlichen beseitigung von schwimmschlamm in abwasserklaeranlagen
DE3440754A1 (de) * 1984-11-08 1986-05-07 Günther 7900 Ulm Abel Verfahren und anlage zur entsorgung und verwertung von klaerschlamm und biomuell
DE4116773C1 (en) * 1991-05-23 1993-04-01 Uhde Gmbh, 4600 Dortmund, De Appts. for single stage oxidn. of combustible aq. sewage sludge with heat generation - has conical reaction chamber with upper sepn. chamber and with central lower air inlet and solid and/or liq. fuel outlet

Also Published As

Publication number Publication date
DE10226322A1 (de) 2004-01-15
ATE365893T1 (de) 2007-07-15
EP1371902B1 (fr) 2007-06-27
DE50307547D1 (de) 2007-08-09
DE10226322B4 (de) 2005-11-24

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