US20200326068A1 - Combustion installation having at least one interfering element removal means in the conveyor line for the combustion residues - Google Patents

Combustion installation having at least one interfering element removal means in the conveyor line for the combustion residues Download PDF

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Publication number
US20200326068A1
US20200326068A1 US16/091,192 US201716091192A US2020326068A1 US 20200326068 A1 US20200326068 A1 US 20200326068A1 US 201716091192 A US201716091192 A US 201716091192A US 2020326068 A1 US2020326068 A1 US 2020326068A1
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US
United States
Prior art keywords
combustion
crusher
blocking
blocking body
residues
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.)
Abandoned
Application number
US16/091,192
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English (en)
Inventor
Rafael Moreno Rueda
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.)
Clyde Bergemann DRYCON GmbH
Original Assignee
Clyde Bergemann DRYCON 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 Clyde Bergemann DRYCON GmbH filed Critical Clyde Bergemann DRYCON GmbH
Publication of US20200326068A1 publication Critical patent/US20200326068A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F23J2900/01001—Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment
    • 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
    • F23J2900/01003—Ash crushing means associated with ash removal means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

Definitions

  • the present invention relates to a combustion plant, especially of the coal-fired power plant type, the biomass-fired combined heat and power plant type or the refuse incineration plant type.
  • Combustion plants of this kind serve especially for power generation, heat generation and/or disposal of waste.
  • Regular operation of combustion plants involves burning, in a combustion space, of fuels, for example coal, biomass and/or refuse, the combustion residues of which have to be removed from the combustion space of the combustion plant.
  • the combustion spaces regularly have at least one outlet for the combustion residues, through which the combustion residues are supplied to a crusher for comminution of the combustion residues and to a conveyor to transport the combustion residues away.
  • the combustion residues entrained out of the combustion space may include blocking bodies, which are, for example, very large lumps of the combustion residues and/or large pieces of metal that are not comminutable or have not been comminuted sufficiently by the crushers and can lead to blockage of a conveying zone for the combustion residues or of the conveyor.
  • blocking bodies can be retained by a grid downstream of the crusher and be removed after the combustion plant has been shut down or run down, which may be possible only after a phase of cooling of the combustion plant of several days.
  • the situation is similar when blocking bodies in the form of metallic bodies (for example destroyed and/or lost constituents of components of the combustion plant) come to rest on the grid of the crushers. These cannot be crushed by the crusher and thus disrupt the function of the crusher, unless the blocking body is removed.
  • the combustion plant has a combustion space for combustion of a fuel, wherein combustion residues of the fuel burnt in the combustion space are suppliable via an outlet from the combustion space to a crusher for comminution of the combustion residues and wherein, by means of at least one blocking body remover disposed in a conveying zone for the combustion residues, blocking bodies that have been entrained in the combustion residues and are not comminutable by the crusher are removable from the conveying zone via a blocking body removal opening.
  • the combustion plant proposed here is especially an industrial plant for power generation, heat generation and/or waste disposal.
  • the combustion plant has a combustion space for combustion of a fuel, which is especially coal, biomass and/or refuse.
  • the combustion residues, especially of the ash and/or slag type, of the fuel burnt in the combustion space are suppliable by at least one outlet from the combustion space to a crusher for comminution of the combustion residues.
  • the outlet from the combustion space especially takes the form of an opening and/or shaft at the bottom of the combustion space.
  • the crusher may, for example, be what is called a jaw crusher.
  • the crusher is preferably disposed below the combustion space of the combustion plant.
  • the combustion residues are comminutable especially in such a way that the comminuted combustion residues can then be reliably transported away by means of a conveyor.
  • the crusher may also be downstream of the conveyor.
  • the conveyor may comprise at least one (circulating) conveyor belt in the form, for example, of a plate conveyor.
  • the conveyor belt here is especially of such a form that it can withstand the high temperatures of the combustion residues of, for example, 800° C. (Celsius) to 1300° C.
  • the conveyor belt is preferably at least partly formed from metal.
  • the conveyor may also take the form of a screw conveyor. As well as transporting the combustion residues away, the conveyor may also serve to cool and/or to solidify the combustion residues. In addition, the conveyor is especially what is called a dry conveyor that enables cooling and/or solidification of the hot combustion residues without quenching of the combustion residues with water. Alternatively, the conveyor may also be what is called a wet conveyor.
  • At least one blocking body remover is disposed in a conveying zone for the combustion residues from the combustion space to the crusher or conveyor, by which blocking bodies that have been entrained in the combustion residues and are not comminutable by the crusher are removable via a blocking body removal opening.
  • the conveying zone is especially a region or pathway along which the combustion residues are conveyed.
  • the conveying zone is at least partly (for safety reasons usually completely) enclosed or surrounded by walls and/or in the form of a chute, a shaft, a funnel or slide.
  • the combustion residues are transported along the conveying zone especially (also) by means of gravity.
  • the blocking bodies are especially large-volume (hard) lumps of the combustion residues that are too large for comminution by the crusher and/or (large) metal bodies, for example lance pipes from a cleaning apparatus in the combustion plant that have fallen into the combustion space.
  • the blocking bodies may especially have, in at least one direction, at least an extent of more than 200 mm (millimeters) or even more than 400 mm.
  • the blocking bodies are too hard and/or too large for comminution by the crusher. It should be made clear that the blocking bodies are thus especially not gaseous pollutants and/or dusts that could readily pass through the crusher.
  • the blocking bodies are removable from the conveying zone for the combustion residues via the blocking body removal opening by means of the at least one blocking body remover disposed at a position across the conveying zone within the conveying zone and/or at the conveying zone for the combustion residues.
  • the blocking bodies are separable from the remaining combustion residues by the at least one blocking body remover, such that the blocking bodies and the combustion residues are subsequently conveyable and/or treatable separately.
  • the blocking body removal opening is especially a (closable and/or at least partly blockable) opening in a wall that at least partly surrounds the conveying zone, or an opening in the crusher through which the blocking bodies are removable from the crusher separately from the combustion residues.
  • the blocking body removal opening may have a diameter of at least 400 mm.
  • the blocking bodies are therefore not comminuted by the crusher and not transported away by the downstream conveyor, but transported away and/or treated separately from the other combustion residues.
  • the blocking bodies can therefore be removed through the at least one blocking body remover and the blocking body removal opening during the normal operation of the combustion plant (“online”). It is thus possible to avoid shutdowns of the combustion plant that lead to high costs.
  • the at least one blocking body remover comprises a first grid at least partly disposed in the conveying zone for the combustion residues and wherein the blocking bodies are separable from the combustion residues by means of the first grid.
  • the first grid may especially take the form of a sieve and/or have a multitude of grid openings that have, for example, a diameter of 100 mm to 800 mm (millimeters), preferably 100 mm to 400 mm or more preferably 100 mm to 200 mm.
  • support elements and/or securing elements may be provided in and/or on the conveying zone or on a wall of the conveying zone.
  • the first grid may be movable by means of the support elements and/or securing elements, especially parallel to a plane of extent of the first grid or in a horizontal direction.
  • This first grid especially has the function of retaining the blocking bodies in the conveying zone in a defined position relative to the blocking body remover and/or the blocking body removal opening, while the combustion residues can be transported further.
  • the first grid for removal of the blocking bodies is at least partly tiltable or movable by the blocking body removal opening.
  • the first grid is thus at least partly tiltable and/or movable out of the conveying zone for the combustion residues.
  • the first grid in the conveying zone thus especially takes the form of a drawer.
  • the blocking bodies can be removed by the first grid outside the conveying zone for the combustion residues, i.e. in a region of the combustion plant in which temperatures are less than 60° C. and/or which is accessible by personnel during the normal operation of the combustion plant.
  • the first grid may completely cover the cross section of the conveying zone.
  • the first grid is designed so as to be much larger than the cross section of the conveying zone, such that, even in the state when it is (partly) withdrawn, it simultaneously still (at least partly) covers the cross section of the conveying zone.
  • the blocking bodies on the first grid may especially slide in the direction of the blocking body removal opening and/or through the blocking body removal opening.
  • the first grid tilts/pivots especially from a horizontal position to a position inclined downward, such that blocking bodies present on the first grid (possibly at least partly automatically owing to gravity) can move toward the blocking body removal opening.
  • the at least one blocking body remover comprises at least one first crusher element of the crusher, wherein the combustion residues are comminutable with the at least one first crusher element and wherein the at least one first crusher element is movable to clear the blocking body removal opening.
  • the crusher is especially what is called a jaw crusher having a first crusher jaw as first crusher element and a second crusher jaw as second crusher element.
  • the at least one blocking body remover may thus also include the jaw crusher.
  • the combustion residues especially pass through a funnel into a grinding space.
  • the combustion residues are then comminuted in a shaft, especially a wedge-shape shaft, between the first crusher jaw and the second crusher jaw.
  • the first crusher jaw is especially disposed in a fixed or immobile manner.
  • the second crusher jaw is disposed in a movable manner, such that the combustion residues are crushed and conveyed downward between the first crusher jaw and the second crusher jaw. It is possible that the first crusher jaw and the second crusher jaw are disposed in a movable manner. As soon as the combustion residues are smaller than a set minimum distance between the first crusher element and the second crusher element, the comminuted combustion residues fall through the crusher owing to gravity and can subsequently be transported away by the conveyor, for example.
  • the at least one first crusher element is movable, i.e. especially movable horizontally and/or vertically, in such a way that the blocking body removal opening is cleared or opened. In this way, the blocking body is removable from the crusher through the blocking body removal opening.
  • the at least one blocking body remover comprises a slider and wherein the blocking bodies are removable through the blocking body removal opening with the slider.
  • the slider is especially a mechanical means by which the blocking bodies can be removed from the first grid or from the crusher.
  • the crusher includes a second crusher element that cooperates with the at least one first crusher element in the comminution of the combustion residues.
  • the second crusher element is especially the second crusher jaw of the jaw crusher.
  • the second crusher element of the crusher is especially movable, such that the blocking bodies can be pushed out of the crusher through the blocking body removal opening.
  • the second crusher element especially moves in a horizontal direction with respect thereto, in the direction of the blocking body removal opening.
  • the second crusher element may be connected to at least one hydraulic cylinder, for example.
  • the crusher includes at least one second grid by which the blocking bodies are separable from the combustion residues.
  • the at least one second grid is especially disposed at a bottom of a space formed between the first crusher element and the second crusher element, and/or is also known to specialists as a “GRID”.
  • the at least one second grid may especially take the form of a sieve and/or have a multitude of grid openings that have, for example, a diameter of 100 mm to 800 mm (millimeters), preferably 100 mm to 400 mm or more preferably 100 mm to 200 mm.
  • This at least one opening may, for example, be a “poke hole” through which the blocking bodies can be moved manually through the blocking body removal opening, for example by means of a mechanical aid.
  • a blocking body can also be pre-crushed above the poke holes in order that it fits better through the blocking body removal opening.
  • a crushing tool can be inserted (temporarily) through a poke hole and be brought into contact with the blocking body present on the first grid.
  • the at least one opening is especially disposed a maximum of 2 meters away from the at least one blocking body remover.
  • the combustion plant includes a mobile receiving container to receive the blocking bodies removed through the blocking body removal opening.
  • the receiving container may have wheels, for example, and/or be movable with a floor conveyor, for example a pallet truck or forklift truck.
  • At least one means of detection may be provided, with which it is possible to detect whether or which blocking bodies are currently present at the blocking body remover.
  • a means of detection for determining the weight of the blocking bodies may be provided.
  • An optical means of detection for visual monitoring of the conveying zone in the region of the blocking body remover may be provided.
  • the at least one means of detection may be connected to a controller that can give a signal to a control panel and/or initiate/end the operation of the blocking body remover or the blocking body removal opening.
  • FIG. 1 a first embodiment of the combustion plant with a closed blocking body removal opening
  • FIG. 2 the first embodiment of the combustion plant with an open blocking body removal opening
  • FIG. 3 a second embodiment of the combustion plant with an open blocking body removal opening
  • FIG. 4 a third embodiment of the combustion plant with a closed blocking body removal opening
  • FIG. 5 the third embodiment of the combustion plant with a closed blocking body removal opening.
  • FIG. 1 shows a combustion plant 1 with a combustion space 2 , in which a fuel (not shown here) is combustible.
  • the combustion residues 3 that result from the combustion of the fuel in the combustion space 2 are suppliable via an outlet 4 from the combustion space 2 along a conveying zone 6 to a crusher 5 and a conveyor 18 .
  • the combustion residues 3 are conveyed along the conveying zone 6 with the aid of gravity.
  • the combustion residues 3 are comminuted by the crusher 5 and then transported away by the conveyor 18 .
  • the conveyor 18 has a circulating conveyor belt with an upper strand 19 and a lower strand 20 .
  • the conveyor is at least partly surrounded by a housing 21 and especially connected in an essentially gastight manner to the combustion space 2 .
  • Blocking bodies 8 are entrained with the combustion residues 3 and are not comminutable by the crusher 5 owing to their hardness and/or size.
  • the combustion plant 1 therefore has a blocking body remover 7 which, in the first embodiment shown here, takes the form of a first grid 10 disposed in the conveying zone 6 for the combustion residues 3 between the outlet 4 of the combustion space 2 and the crusher 5 .
  • the grid 10 of the blocking body remover 7 is withdrawable laterally from the conveying zone 6 for the combustion residues 3 through a blocking body removal opening 9 formed in a wall 23 surrounding the conveying zone 6 .
  • the blocking bodies 8 that have been filtered out of the combustion residues 3 by the first grid 10 can be removed without needing to shut down or run down the combustion plant.
  • FIG. 3 shows a second embodiment of a combustion plant 1 that differs from the first embodiment of the combustion plant 1 in that the blocking body remover 7 has a first grid 10 tiltable or pivotable about a pivot axis 25 .
  • the first grid 10 forms an oblique plane, such that the blocking bodies 8 can slide through the blocking body removal opening 9 , which is open here, out of the conveying zone 6 .
  • the blocking body removal opening 9 can be closed by a flap (not shown here).
  • FIG. 4 shows a third embodiment of a combustion plant 1 that differs from the first and second embodiments of the combustion plant 1 in that the blocking body remover 7 comprises a first crusher element 11 of the crusher 5 .
  • the crusher 5 here takes the form of a jaw crusher and comprises a first crusher jaw as first crusher element 11 and a second crusher jaw as second crusher element 13 , between which the combustion residues 3 are comminutable.
  • the crusher 5 has a second grid 14 which is disposed directly beneath the first crusher element 11 and the second crusher element 13 and which separates the blocking bodies 8 from the remaining combustion residues 3 .
  • the crusher 5 is shown here in a normal operating position in which the first crusher element 11 is in a locked position, the second crusher element 13 can be made to vibrate, for example by means of an eccentric shaft (not shown here) or a hydraulic cylinder and/or by a simple drive and in which the combustion residues 3 are comminutable by the crusher 5 . It should be made clear here that the second embodiment of the combustion plant 1 does not have a first grid 10 in the conveying zone 6 for the combustion residues 3 , even though this is possible in principle.
  • FIG. 5 shows the third embodiment of the combustion plant 1 after a blocking body removal opening 9 has been opened by lateral movement or displacement of the first crusher element 11 in a horizontal direction, such that the blocking bodies 8 are removable from the second grid 14 out of the crusher 5 by the second crusher element 13 , in the form here of a slider 12 .
  • the first crusher element 11 can also be designed in a vertical direction and/or in pivotable form.
  • the second crusher element 13 is movable along the second grid 14 in the direction of the blocking body removal opening 9 by means of at least one hydraulic cylinder 24 , such that the blocking bodies 8 fall through the blocking body removal opening 9 and a chute 22 into a receiving container 16 . Both the chute 22 and the receiving container 16 have a mobile configuration.
  • the chute 22 is secured to the receiving container 16 and movable therewith. Subsequently, the first crusher element 11 and the second crusher element 13 return to their starting position or locked position. Above the crusher 5 there is an opening 15 disposed in the wall 23 in a shaft beneath the outlet 4 from the combustion space 2 , which is closed here by means of a flap 17 . Through the opening 15 , the blocking bodies 8 can be moved manually on the second grid 14 , for example by means of a mechanical aid, in the direction of the blocking body removal opening 9 .
  • blocking bodies can be removed in normal operation of a combustion plant without having to shut down the combustion plant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
US16/091,192 2016-04-06 2017-03-13 Combustion installation having at least one interfering element removal means in the conveyor line for the combustion residues Abandoned US20200326068A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016106277.4A DE102016106277A1 (de) 2016-04-06 2016-04-06 Verbrennungsanlage mit zumindest einem Störkörperentfernungsmittel
DE102016106277.4 2016-04-06
PCT/EP2017/055759 WO2017174297A1 (fr) 2016-04-06 2017-03-13 Dispositif de combustion comportant au moins un moyen d'élimination de corps indésirables dans le trajet de transport des résidus de combustion

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US20200326068A1 true US20200326068A1 (en) 2020-10-15

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US16/091,192 Abandoned US20200326068A1 (en) 2016-04-06 2017-03-13 Combustion installation having at least one interfering element removal means in the conveyor line for the combustion residues

Country Status (6)

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US (1) US20200326068A1 (fr)
EP (2) EP3699491B1 (fr)
DE (1) DE102016106277A1 (fr)
ES (1) ES2784945T3 (fr)
TW (1) TWI706113B (fr)
WO (1) WO2017174297A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6806637B2 (ja) * 2017-06-30 2021-01-06 川崎重工業株式会社 クリンカ灰分離装置及び灰排出システム

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE556890C (de) * 1929-12-14 1932-08-16 Otto Schenk Schlackenrost
DE2809570A1 (de) * 1978-03-06 1979-09-20 Peters Ag Claudius Zerkleinerungsanlage fuer rostkuehler
US4330502A (en) * 1980-06-16 1982-05-18 A. Ahlstrom Osakeyhtio Fluidized bed reactor
JPH09196352A (ja) * 1996-01-20 1997-07-29 Daido Steel Co Ltd 廃棄物溶融炉による溶融物の固化処理装置
DE29808963U1 (de) * 1998-05-20 1998-10-01 Krupp Foerdertechnik Gmbh Vorrichtung zur Verhinderung der Bildung von Verstopfungen am Abwurf von Rosten durch großstückige Materialteile
DE19856197A1 (de) * 1998-12-05 2000-06-08 Asea Brown Boveri Siebförderrost
CN1619222A (zh) * 2004-12-09 2005-05-25 上海交通大学 可连续排渣的流化床垃圾焚烧方法
FR2967478A1 (fr) * 2010-11-15 2012-05-18 Europ Metal Concept Emc Procede et systeme de traitement des residus issus de la combustion d’un cercueil contenant le corps d’une personne decedee
EP2876371B1 (fr) * 2013-11-22 2018-11-07 Sumitomo SHI FW Energia Oy Procédé et appareil pour la combustion de carburant sulfureux dans une chaudière à lit fluidisé circulant

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Publication number Publication date
EP3699491B1 (fr) 2021-08-18
TWI706113B (zh) 2020-10-01
EP3440405A1 (fr) 2019-02-13
EP3699491A1 (fr) 2020-08-26
WO2017174297A1 (fr) 2017-10-12
EP3440405B1 (fr) 2020-02-05
ES2784945T3 (es) 2020-10-02
DE102016106277A1 (de) 2017-10-12
TW201743015A (zh) 2017-12-16

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