EP3252377B1 - Verfahren zum aufbereiten von schlacke einer verbrennungsvorrichtung - Google Patents

Verfahren zum aufbereiten von schlacke einer verbrennungsvorrichtung Download PDF

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Publication number
EP3252377B1
EP3252377B1 EP17000677.9A EP17000677A EP3252377B1 EP 3252377 B1 EP3252377 B1 EP 3252377B1 EP 17000677 A EP17000677 A EP 17000677A EP 3252377 B1 EP3252377 B1 EP 3252377B1
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EP
European Patent Office
Prior art keywords
slag
combustion
separator
finest fraction
fraction
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.)
Active
Application number
EP17000677.9A
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German (de)
English (en)
French (fr)
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EP3252377A1 (de
Inventor
Johannes Martin
Ulrich Martin
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.)
Martin GmbH fuer Umwelt und Energietechnik
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Martin GmbH fuer Umwelt und Energietechnik
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Priority claimed from DE102016006368.8A external-priority patent/DE102016006368A1/de
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Priority to PL17000677T priority Critical patent/PL3252377T3/pl
Publication of EP3252377A1 publication Critical patent/EP3252377A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/101—Baghouse type
    • 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
    • F23J2900/01001—Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment

Definitions

  • the invention relates to a method for processing slag, which contains, among other things, residues of thermally treated CFRP or GFRP materials, a combustion device, in which the slag is separated from the combustion device by means of a deslagging device.
  • the DE 10 2006 035 260 A1 propose that the residues be cascaded in a sloping path and in between free fall distances by applying a vibrating motion down several stages and thereby discharge the fine fraction in the area of the vibrating conveyor movement and in particular in the area of the free falling distances by a gas flow transverse to the direction of the fall and in the opposite direction to the vibrating motion.
  • the gas stream can first be cyclone separated after wind sifting and can then be fed to a filtering process as required. This makes it possible to separate the slag into a coarse fraction with a diameter of several millimeters and a fine fraction with a smaller diameter, whereby dusts are avoided as far as possible and inevitable dust can be separated using a cyclone and filter.
  • the combustion residues could contain fractions of them that are health-related, because they are respirable. This is not critical for the particles discharged with the combustion exhaust gas due to the thermal convection or the speed of these exhaust gases from the combustion chamber into a downstream steam generator, as well as the subsequent exhaust gas cleaning, since an almost quantitative separation takes place in the filters of the exhaust gas cleaning system. More problematic is the material flow of these materials that leaves the combustion chamber with the burned-out fuel residues, e.g. B. with the ash and slag, and then another use. This is not only the predominant proportion of these substances, but also contamination of the entire solid residual fraction after combustion.
  • the invention is therefore based on the object of developing a generic method in such a way that the slag from combustion plants has as little particle dust and fibers from these fractions as possible even when CFRP, GFRP and / or nano-materials are burned.
  • the invention is based on the knowledge that it is advantageous to produce a very fine fraction which essentially has particles with a diameter of less than 500 ⁇ m. This fine fraction is separated from the residual slag with an air classifier.
  • the diameter of the particles corresponds to the diameter that a particle with the same volume would have in spherical form or it corresponds to the aerodynamic diameter.
  • the aerodynamic diameter is therefore above the diameter of the fiber. For example, if a faction with a Diameter smaller than 2,000 ⁇ m is spoken, then this fraction can also have thin fibers with, for example, 10 mm length and a few ⁇ m diameter.
  • the separator or a subsequent separating or separating device ensures that the fine fraction has the predominant proportion of a fraction of fiber materials, fragments thereof and nanoparticles.
  • the aim is to use this fine fraction to remove fiber materials, fragments thereof and nanoparticles quantitatively, i.e. more than 80% and preferably more than 95% and particularly preferably more than 98% of the fiber materials, fragments thereof and nanoparticles from the slag .
  • inertial force separators are preferably used to separate particles with an aerodynamic diameter of at least 2 ⁇ m, it is proposed to use an inertial force separator to separate particles with an aerodynamic diameter of more than 1 ⁇ m or more than 2 ⁇ m from the dust. With particles of this size, the influence of diffusion can be neglected.
  • the aerodynamic diameter is defined as the diameter of a spherical particle with a density of 1 g / cm 3 , which has the same sinking rate as the particle under consideration.
  • the sinking speed of the particle to be considered relates to still air.
  • Air sifting is a mechanical separation process in which particles are separated in a gas stream based on their ratio of inertia and / or gravity to flow resistance. It is a classification process and uses the principle of gravity or centrifugal force separation. Fine particles follow the flow, coarse the mass force.
  • a device can be used that is already in the DE 10 2006 035 260 A1 is described. The content of this patent application is incorporated in full in the present application.
  • the combustion device has a combustion chamber of a waste incineration plant.
  • the garbage to be burned can be burned on a combustion grate and transported in the direction of the deslagging device.
  • the waste to be burned can also be burned in a fluidized bed.
  • the slag can be transported in the deslagging device towards the separator. This is particularly preferably done by means of a plunger.
  • the deslagger device is filled with slag during operation in such a way that the passage between the combustion system and the separator is filled with slag.
  • the fine fraction can be supplied to the combustion device with ambient air and / or with recirculation gas.
  • the fine fraction can also be fed with the flue gases of the combustion device to a dust separator device.
  • the fine fraction can also be sent to a separate, controlled disposal.
  • At least 50%, preferably at least 90% and particularly preferably at least 95% of the fiber materials, the fragments thereof and the nanoparticles are used can be removed from the residual slag with the fine fraction. If CFRP waste is incinerated, 50%, 90% or 95% of the fiber material and / or the nanoparticles should be removed from the residual slag.
  • a device for treating slag from a combustion device is also suitable for the object on which the invention is based, the device having a deslagging device and a separator, the deslagging device having a slag inlet and a slag outlet and separating the separator from the combustion device and wherein the separator in one enclosed space is arranged, which has a slag supply opening, an air supply opening, a fine fraction discharge opening and a residual slag discharge opening.
  • the fine fraction discharge opening can lead to a dust separator, which is designed as a fabric filter or preferably as a cyclone.
  • the fine fraction discharge opening be connected directly or indirectly to the combustion device, preferably to the secondary combustion zone.
  • Device 1 shown for treating slag 2 of a combustion device 3 has a deslagging device 4 and a separator 5.
  • the deslagging device 4 has a slag inlet 6 and a slag outlet 7. The deslagging device thus separates the combustion device 3 from the separator 5.
  • the separator 5 is arranged in an enclosed space 8, which is designed as an accessible cabin.
  • This space 8 has a slag supply device 9 following the slag outlet 7, an air supply opening 10 for supplying ambient air 11, a fine fraction discharge opening 12 and a residual slag discharge opening 13, which is arranged on a wall, not shown, which lies in the plane of the drawing sheet.
  • the fine fraction discharge opening 12 leads via a line 14 to a dust separator 15 which is designed as a cyclone.
  • the heavy particles are removed in the cyclone and the residual dust is fed via line 16 and a blower 17 to the secondary combustion zone 18 of the combustion device 3.
  • waste 19 is passed through the feed hopper 20 onto the combustion grate 21 and burns in the combustion chamber 22 of the waste incineration plant.
  • the polymer matrix in which the carbon fibers are embedded burns.
  • a dust fraction 26 is separated from the fine fraction 24 in the dust separator 15 by centrifugal force and the rest is fed with the secondary combustion air 27 to the secondary combustion zone 18 of the combustion device 3.
  • the slag thus migrates from the end of the combustion grate 21 into the deslagger 4 and is conveyed there to the separator 5 by means of a plunger 27.
  • the deslagger 4 is filled with slag in such a way that the passage 28 between the combustion system 3 and the separator 5 is filled with slag 2.
  • the separator 5 is designed as an air classifier.
  • the fine particles of the fine fraction 24 follow the flow of the supplied ambient air 11 and the coarse particles follow the inertia and are discharged as residual slag 25.
  • the slag 2 is conveyed onto moving plates 29 to 32 arranged in cascade behind one another, dust being removed from the residual slag 25 during the fall from one plate to the other plate and during conveyance on a plate by means of the air flow 33 of the ambient air 11, which is transported as a fine fraction 24 via line 14 to separator 15.
  • the plates 29 to 32 are driven by a motor with an eccentric 34 and are mounted on the frame 35 by means of the spring 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
EP17000677.9A 2016-05-30 2017-04-21 Verfahren zum aufbereiten von schlacke einer verbrennungsvorrichtung Active EP3252377B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17000677T PL3252377T3 (pl) 2016-05-30 2017-04-21 Sposób przeróbki żużla z urządzenia do spalania.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016006368.8A DE102016006368A1 (de) 2016-05-30 2016-05-30 Verfahren zum Aufbereiten von Schlacke einer Verbrennungsvorrichtung
DE102016006416 2016-05-31

Publications (2)

Publication Number Publication Date
EP3252377A1 EP3252377A1 (de) 2017-12-06
EP3252377B1 true EP3252377B1 (de) 2020-03-11

Family

ID=58632108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000677.9A Active EP3252377B1 (de) 2016-05-30 2017-04-21 Verfahren zum aufbereiten von schlacke einer verbrennungsvorrichtung

Country Status (6)

Country Link
EP (1) EP3252377B1 (da)
JP (1) JP7114225B2 (da)
DK (1) DK3252377T3 (da)
ES (1) ES2803239T3 (da)
PL (1) PL3252377T3 (da)
PT (1) PT3252377T (da)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6038987A (en) * 1999-01-11 2000-03-21 Pittsburgh Mineral And Environmental Technology, Inc. Method and apparatus for reducing the carbon content of combustion ash and related products

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE409266C (de) * 1923-02-02 1925-02-02 Harald Askevold Staubabscheider mit ueber treppenfoermig angeordneten, einzeln einstellbaren Luftdurchlassoeffnungen gefuehrtem Gut
JP2639885B2 (ja) * 1993-08-18 1997-08-13 株式会社タクマ 廃棄物焼却方法及びその装置
DE4423927A1 (de) 1994-07-07 1996-01-11 Abb Research Ltd Verfahren zum Rückgewinnen von Wertstoffen aus Müllverbrennungsschlacke
CH698068B1 (de) * 2004-08-25 2009-05-15 Hochschule Rapperswilinstitut Trockene Entschlackung von Verbrennungsanlagen.
DE102006035260A1 (de) 2006-07-26 2008-01-31 Martin GmbH für Umwelt- und Energietechnik Verfahren und Vorrichtung zum Trennen von Reststoffen
DE102011013030A1 (de) * 2011-03-04 2012-09-06 Alexandra Beckmann Aufbereiten von Müllverbrennungsasche
EP2778523B1 (de) * 2013-03-14 2019-06-19 Hitachi Zosen Inova AG Schlackeaufbereitungsvorrichtung
DE102014100725B3 (de) * 2013-12-23 2014-12-31 Schauenburg Maschinen- Und Anlagen-Bau Gmbh Verfahren zur Aufbereitung von Asche aus Müllverbrennungsanlagen durch Nassklassierung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6038987A (en) * 1999-01-11 2000-03-21 Pittsburgh Mineral And Environmental Technology, Inc. Method and apparatus for reducing the carbon content of combustion ash and related products

Also Published As

Publication number Publication date
PL3252377T3 (pl) 2020-10-19
DK3252377T3 (da) 2020-06-15
EP3252377A1 (de) 2017-12-06
ES2803239T3 (es) 2021-01-25
JP2017215135A (ja) 2017-12-07
PT3252377T (pt) 2020-06-02
JP7114225B2 (ja) 2022-08-08

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