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WO2003087690A1 - Procede et dispositif pour transporter du clinker chaud a travers un refroidisseur tubulaire - Google Patents

Procede et dispositif pour transporter du clinker chaud a travers un refroidisseur tubulaire Download PDF

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Publication number
WO2003087690A1
WO2003087690A1 PCT/EP2003/003886 EP0303886W WO03087690A1 WO 2003087690 A1 WO2003087690 A1 WO 2003087690A1 EP 0303886 W EP0303886 W EP 0303886W WO 03087690 A1 WO03087690 A1 WO 03087690A1
Authority
WO
WIPO (PCT)
Prior art keywords
grate
cooling
conveying elements
refrigerated goods
moved
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
PCT/EP2003/003886
Other languages
German (de)
English (en)
Inventor
Thomas Binninger
Karl Schinke
Matthias Mersmann
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Priority to AU2003233975A priority Critical patent/AU2003233975A1/en
Publication of WO2003087690A1 publication Critical patent/WO2003087690A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement

Definitions

  • the invention relates to a method for transporting refrigerated goods such. B. hot cement clinker through a grate cooler, with a fixed cooling grate through which cooling gas flows, above which several rows of adjacent conveying elements and driven by below the cooling grate are arranged transversely to the cooling goods transport direction and which are moved between a forward stroke position in the cooling goods transport direction and a return stroke position.
  • the invention also relates to a device for carrying out the method.
  • Grate coolers are used in the stone and earth industry to remove the goods previously burned in an oven, such as. B. directly cool cement clinker or other mineral goods immediately afterwards on the cooling grate.
  • the pushing grate cooler in which the grate system consists of a large number of alternating fixed and movable grate plate carriers, on which several are provided with cooling air openings and essentially from bottom to top of cooling air, are particularly widespread for the purpose of transporting the hot refrigerated goods over the cooling section flow through grate plates are attached.
  • stationary rows of grate plates alternate with rows of grate plates that can be moved back and forth, which are fastened together via their corresponding back and forth grate plate supports on one or more longitudinally movably driven thrust frames. Due to the jointly oscillating movement of all movable grate plate hen the goods to be cooled, e.g. B. the hot cement clinker, transported in batches and cooled.
  • the goods to be cooled e.g. B. the hot cement clinker
  • an alternative to a conventional grate cooler is e.g. B.
  • a grate cooler type in which the cooling grate through which cooling air is not moved, but is fixed, with a plurality of rows of adjacent reciprocating bar-shaped conveying elements being arranged above the fixed grate surface transversely to the direction of cooling goods transport a forward stroke position in the refrigerated goods transport direction and a return stroke position, so that the reciprocating movement of these bar-shaped conveying elements in the bed of goods to be cooled successively moves the good material from the cooler start to the cooler end and thereby cools it.
  • the conveying capacity is decisively influenced by the difference between the cement clinker volume moved in the conveying direction with each preliminary stroke and the clinker volume undesirably moved against the conveying direction during the return stroke movement.
  • the cross-bar-shaped conveying elements are fastened to the top of vertical drive plates aligned in the longitudinal direction of the cooler, which extend through corresponding longitudinal slots in the cooling grate over practically the entire length of the cooler, so that the drive-shaped drive elements from below the cooling grate move the bar-shaped conveying elements in the refrigerated goods bed. and be moved around. It goes without saying that it is complex to seal the cooling grate loaded with refrigerated goods against rust diarrhea at the long passage slots of the drive plates and to keep the material wear that occurs within limits.
  • the invention has for its object to provide a grate cooler type of the latter type with a novel drive and control concept of the conveying elements, the conveying capacity and the efficiency of the grate cooler being increased and the wear problems being reduced.
  • the individual conveying elements, the z. B. are pin-shaped and protrude above the cooling grate like rake tines from below into the refrigerated goods bed, in each case controlled by push rods lying in the refrigerated goods transport direction, which are each sealed in bushings passing through the cooling grate and optionally guided.
  • the sockets assume an approximately horizontal position or a position with a small angle of inclination to the horizontal.
  • the push rods with the conveyor elements attached to them are driven from below the cooling grate via linear drives.
  • the entire cooling grate has practically no openings or gaps more that would have to be laboriously sealed.
  • the risk of fine bulk material penetrating into the annular gap between the bushing and the respective push rod is minimized, and it can be further reduced by passing part of the cooling air through the cooling grate as sealing air through the gap between the bushing and the push rod, the The sealing air also serves to cool the sliding seat. Instead of using the sealing air, it would also be possible to install an exchangeable, wear-resistant ring sealing element.
  • Another advantage of the invention is that, due to the fastening of the conveying elements to the guided push rods, the conveying elements can be moved individually and / or in groups in a controlled manner.
  • the conveyor elements of a row are moved forward together during their forward stroke movement and are not moved back together during their return stroke movement, but are moved back in at least two successive steps, in each of which only a part of the conveyor elements, e.g. B. only every second conveyor element in a row is moved back.
  • the cement clinker can no longer hold between the pin-shaped conveying elements and it is not conveyed back.
  • half of the push rods and thus half of the conveying elements projecting approximately vertically from bottom to top into the bulk material can be moved over two mutually independent oscillating frames, which are mounted in the grate cooler below the grate surface.
  • the conveyor mechanism for transporting the refrigerated goods is completely independent of the ventilation of the cooling grate.
  • the conveying mechanism can serve to actively influence the distribution of the cement clinker in a way that is not possible with clinker coolers known to date.
  • the length of the pin-shaped conveying elements seen over the cooler length and / or the cooler width can be chosen differently in order to optimize the conveying properties over the cooler length and cooler width. It would also be possible not to arrange the conveyor elements in complete rows, but to offset them against one another or to omit entire areas of the grate surface. It would also be possible to equip individual drive series or sections with their own small drives in order to distribute, accelerate or brake the cement clinker in certain areas or zones of the clinker cooler.
  • This technology can be a very effective addition to the ventilation system of the grate cooler, since the cement clinker is transported to the location of the cooling air in the manner according to the invention.
  • Fig. 1 partially schematically a vertical longitudinal section through the cooling grate of a grate cooler according to the invention for cooling hot cement clinker discharged from a rotary kiln, and
  • Fig. 2 sections and somewhat enlarged schematically
  • FIG. 1 shows the grate cooler according to the invention with a fixed, ie. H. not moving cooling grate 11, via which the items to be cooled such as. B. hot cement clinker in the embodiment is movable from left to right in the direction of arrow 12 from the refrigerated goods inlet to the refrigerated goods outlet.
  • the cooling grate 11 is composed of individual fields or grate plates, which are advantageously equipped with chilled goods troughs or chilled goods pockets 13 for receiving and holding chilled goods, so that when the grate cooler is operating, a lower pre-cooled good bed layer or protective layer is formed on the static cooling grate 11 , via which the hot material to be cooled is moved by means of driven conveyor elements 14.
  • the cooling grate 11 several rows at a distance from adjacent conveying elements 14 are arranged transversely to the cooling goods transport direction 12, which in the exemplary embodiment are pin-shaped and project above the cooling grate like rake tines approximately vertically from below into the cooling goods bed, not shown.
  • the bushing 16 is exclusively a sealing bushing, the push rod 15 is guided and supported via the push rod end 23 below the cooling grate 11. In this case, the push rod 15 is guided / supported from its seal.
  • the conveying elements 14 are in each case one row during their forward stroke movement in the direction of arrow 18 to form a refrigerated goods push front with a narrow distance 19 from one another and during their return stroke movement in arrow direction 20 to minimize a push front with a larger distance 21 positioned from each other what z.
  • This is achieved, for example, if the conveyor elements 14 are not moved back together during the return stroke, but rather are moved back in at least two successive steps, in each of which only a part of the conveyor elements, eg. B. only every second conveyor element 14 of a row is moved back to suppress the build-up of a refrigerated goods drawer. In this way, the delivery rate of the grate cooler according to the invention is kept high.
  • the cross section of the pin-shaped conveying elements 14 does not have to be cylindrical.
  • the cross section can also be approximately wedge-shaped, so that a pronounced front thrust surface is effective in the conveying elements during the forward stroke, while during the return stroke the conveying elements slide through the bulk material bed like a wedge knife with comparatively little resistance.
  • the push rods 15 themselves can be provided with a wear protection layer 22, at least in the longitudinal region with which they emerge from their respective bushes 16 above the sliding grate 11, as well as the pin-shaped conveying elements 14.
  • the ends 23 of the push rods 15 lying below the cooling grate 11 can be connected to a plurality of oscillating frames which are mounted below the cooling grate and are connected to linear drives.
  • the conveying elements 14 in the grate cooler according to the invention can be moved individually and / or in selectable groups between their forward stroke position and their return stroke position in order to optimize the properties of the grate cooler as well as the distribution of the cement clinker over the cooler width and the cooler length to be able to, so that the thermal efficiency of the grate cooler according to the invention is high.
  • the grate cooler according to the invention makes it possible to distribute, accelerate or brake the hot cement clinker in specific areas or zones of the cooler.
  • the individual rows of the pin-shaped conveying elements 14 are arranged at a distance of approximately 0.5-1.5 m in the longitudinal direction of the cooler.
  • the conveyor elements 14 can, for. B. be 120 mm high, which corresponds to about twice the height of the grate plate pushing edges in the conventional moving grate cooler.
  • the stroke length of the moving pin-shaped conveying elements 14 can, for. B. 120 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention vise à mettre au point un refroidisseur tubulaire peu sensible à l'usure, à haute capacité de transport, à haut rendement et muni d'une grille de refroidissement fixe (11), au-dessus de laquelle sont disposées, transversalement au sens de transport du produit à refroidir, plusieurs rangées d'éléments de transport (14) adjacents et entraînés depuis le dessous de la grille de refroidissement. A cet effet, il est prévu de déplacer les éléments de transport (14) de manière commandée, entre une position de précourse et une position de course de retour, individuellement et/ou en groupes, par l'intermédiaire de barres de poussée (15) situées dans le sens de transport du produit à refroidir. Lesdites barres de poussée (15) sont guidées dans chaque cas à travers un manchon (16) traversant la grille de refroidissement (11).
PCT/EP2003/003886 2002-04-17 2003-04-15 Procede et dispositif pour transporter du clinker chaud a travers un refroidisseur tubulaire Ceased WO2003087690A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003233975A AU2003233975A1 (en) 2002-04-17 2003-04-15 Method and device for conveying hot cement clinker through a grate cooler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10216926.8 2002-04-17
DE2002116926 DE10216926A1 (de) 2002-04-17 2002-04-17 Verfahren und Vorrichtung zum Transport von heißem Zementklinker durch einen Rostkühler

Publications (1)

Publication Number Publication Date
WO2003087690A1 true WO2003087690A1 (fr) 2003-10-23

Family

ID=28798471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003886 Ceased WO2003087690A1 (fr) 2002-04-17 2003-04-15 Procede et dispositif pour transporter du clinker chaud a travers un refroidisseur tubulaire

Country Status (3)

Country Link
AU (1) AU2003233975A1 (fr)
DE (1) DE10216926A1 (fr)
WO (1) WO2003087690A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017333A1 (fr) * 2006-08-11 2008-02-14 Polysius Ag Refroidisseur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE490222T1 (de) * 2000-02-23 2010-12-15 Denki Kagaku Kogyo Kk Vorrichtung zur entfernung von grösseren beschichtungsstücken
DE102004038890A1 (de) * 2004-08-10 2006-02-23 Polysius Ag Kühler für Schüttgut

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634619A1 (fr) * 1993-07-15 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Plaque de grille pour refroidisseur à plaques mobiles
WO2002081994A2 (fr) * 2001-04-06 2002-10-17 Claudius Peters Technologies Gmbh Grille refrigerante pour materiau en vrac

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE824327C (de) * 1946-09-30 1951-12-10 Smidth & Co As F L Vorrichtung zum Foerdern von Schuettgut
ZA982104B (en) * 1997-04-22 1998-09-16 Smidth & Co As F L Cooler for cooling of particulate material
DE10018142B4 (de) * 2000-04-12 2011-01-20 Polysius Ag Kühler und Verfahren zum Kühlen von heißem Schüttgut

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634619A1 (fr) * 1993-07-15 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Plaque de grille pour refroidisseur à plaques mobiles
WO2002081994A2 (fr) * 2001-04-06 2002-10-17 Claudius Peters Technologies Gmbh Grille refrigerante pour materiau en vrac

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017333A1 (fr) * 2006-08-11 2008-02-14 Polysius Ag Refroidisseur

Also Published As

Publication number Publication date
AU2003233975A1 (en) 2003-10-27
DE10216926A1 (de) 2003-11-06

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