EP0786637A1 - Grille coulissante pour le traitement de matières en vrac - Google Patents

Grille coulissante pour le traitement de matières en vrac Download PDF

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Publication number
EP0786637A1
EP0786637A1 EP96118396A EP96118396A EP0786637A1 EP 0786637 A1 EP0786637 A1 EP 0786637A1 EP 96118396 A EP96118396 A EP 96118396A EP 96118396 A EP96118396 A EP 96118396A EP 0786637 A1 EP0786637 A1 EP 0786637A1
Authority
EP
European Patent Office
Prior art keywords
grate
plates
rows
sliding
longitudinal direction
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.)
Withdrawn
Application number
EP96118396A
Other languages
German (de)
English (en)
Inventor
Karl Josef Dipl.-Ing. Menzel
Jean-Paul Ing. Kauffmann
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius 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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0786637A1 publication Critical patent/EP0786637A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • F27B21/02—Sintering grates or tables

Definitions

  • the invention relates to a sliding grate for treating bulk material transported in the longitudinal direction across the grate by means of treatment gases, in particular for cooling hot material by means of cooling gases, according to the preamble of claim 1.
  • Push grates of this type are preferably used for the heat exchange between a bulk material to be treated and suitable treatment gases.
  • a particularly typical application of such a grate is the formation and use as a cooling grate in a grate cooler for cooling hot material, in particular hot cement clinker, burnt lime, hot ore materials or the like.
  • cooling gases in particular cooling air, are passed through the bottom from below Good layer to be cooled.
  • the material to be treated or hot material to be cooled is transported in the longitudinal direction over the grate to the outlet end thereof by the pushing movement of the back and forth movable grate plate rows.
  • individual stationary grate plate rows and individual reciprocable grate plate rows are generally arranged in the longitudinal direction of the grate alternately and overlapping one another in an approximately scale-like manner.
  • the reciprocating pushing movement of the movable rows of grate plates ensures that the bulk material to be treated is transported over the grate.
  • Examples of such known sliding grates in the form of sliding grate coolers are known, inter alia, from EP-A-0 537 523, EP-A-0 677 714 and DE-A 44 17 422.
  • the movement gaps mentioned must be kept as small as possible. Due to the relative or pushing movement of the overlapping grate plates, due to the already mentioned material wear due to these pushing movements as well as due to strongly abrasive material to be treated, it is usually very difficult to make an exact adjustment of the gap height and to maintain this gap height in the long term.
  • the invention is therefore based on the object to provide a sliding grate of the type required in the preamble of claim 1, which is characterized by reliable handling of the bulk material, in particular effective cooling of hot combustion material, and a relatively simple structure compared to the known designs in that the wear between the relative moving grate plates and the amount of sealing air can be significantly reduced.
  • the individual grate plate rows arranged one behind the other in the grate longitudinal direction are arranged alternately in a stationary (stationary) manner and can be moved back and forth in the material conveying direction
  • at least one grate longitudinal section in each case has at least two directly adjacent grate plate rows together relative to at least one a row of grate plates following in the longitudinal direction of the grate plates are movable.
  • This embodiment of the sliding grate according to the invention very generally enables a large number of possible assemblies and arrangements of grate plates or grate plate rows, in particular with regard to the number and the joint mobility or fixability of directly adjacent grate plates.
  • two directly adjacent, reciprocating grate plate rows are arranged in pairs and are alternately arranged with two directly adjacent stationary grate plate rows in the longitudinal direction of the grate.
  • the sliding grate designed in accordance with the invention can generally be used for the treatment of different bulk goods which are transported in the longitudinal direction and which are flowed through by suitable treatment gases from bottom to top during their transport, it is assumed in the following explanations that the illustrated sliding grate is is his particularly preferred training as a grate cooler, which is designed to cool hot fired material, such as cement clinker, that comes from a burner, in particular a kiln such as a rotary kiln, and is thrown onto this sliding grate.
  • a grate cooler which is designed to cool hot fired material, such as cement clinker, that comes from a burner, in particular a kiln such as a rotary kiln, and is thrown onto this sliding grate.
  • the sliding grate 1 can be constructed only over at least one selected longitudinal section or — which is generally preferred — over its entire length in the manner illustrated and described below.
  • This sliding grate 1 contains a number of grate plate rows 4a, 4b, 5a, 5b arranged one behind the other in the grate longitudinal direction, of which the grate plate rows 4a, 4b can be moved back and forth in the grate longitudinal direction (arrow 2) by being arranged on a common drive frame 6, which in turn can be moved back and forth in the direction of the double arrow 7 with the aid of a drive, which is not known per se, ie it is a conventional back and forth drive frame 6.
  • the other rows of grate plates 5a, 5b are stationary or stationary in the cooler or sliding grate housing only indicated at 8.
  • the grate plates 9 of rows of grate plates 4a, 4b, 5a, 5b adjacent in the longitudinal direction (arrow 2) should overlap each other approximately in a scale-like manner, as can be seen in FIG. 1, but also in FIG.
  • grate plates 4a, 4b which are immediately adjacent to one another and can be moved back and forth in the direction of the double arrow 7, each with two rows mutually adjacent stationary grate plate rows 5a, 5b are arranged alternately in the grate longitudinal direction (arrow 2), ie pairs of reciprocable grate plate rows 4a, 4b and stationary grate plate rows 5a, 5b alternate in the grate longitudinal direction (arrow 2).
  • the grate plate rows 4a, 4b which can be moved back and forth in pairs, are arranged on the common drive frame 6.
  • the grate plates 9 of each movable grate plate row 4a, 4b and the grate plates 9 of each fixed grate plate row 5a, 5b are individually exchangeably fastened on separate grate plate supports 10 and 11, which each belong to a single row of grate plates 4a, 4b, 5a and 5b and preferably for the supply of a heat exchange medium, in this case for the supply of cooling air (arrows 3) are formed as a hollow support, as is also known per se, for example, from EP-A-0 537 523.
  • the grate plate supports 10 for the reciprocable grate plate rows 4a, 4b are mounted on the reciprocating drive frame 6 and the grate plate supports 11 of the fixed grate plate rows 5a, 5b are stationary in the sliding grate housing 8.
  • This movement gap BS serves the supply of so-called sealing air (corresponding to the dash-dotted arrows 12) in order to cool the grate plates 9 in this gap area, to prevent diarrhea of fine bulk material or clinker and in addition to backflow of cooling air or treatment gas from the bulk material bed or clinker bed in the lower part of the grate. So that as little sealing air as possible can be passed through the movement column BS in a controlled manner, this movement column should be set as small as possible.
  • the movement gaps BS of rows of grate plates 4b / 5a, 5b / 4a movable relative to one another can be adjustable.
  • the overlapping grate plates 9 of fixed grate plate rows 5a, 5b arranged in pairs are connected to one another by contact points 13 between these overlapping grate plates 9.
  • These contact points 13 can, for example, be spherical, cylindrical or similarly designed and arranged in such a way that they form a type of pivot axis between the grate plates 9 connecting them, this pivot axis running essentially at right angles to the grate longitudinal axis or to the grate longitudinal direction according to arrow 2.
  • a predetermined passage gap for sealing air can also be set in accordance with the respective operational requirements between these overlapping grate plates of each row pair.
  • the overlapping grate plates 9 of each pair of rows should not be firmly connected to one another in order to ensure easy assembly and interchangeability.
  • the sliding grate 1 can also be arranged such that its grate surface is essentially horizontal in its longitudinal direction or in the direction of the grate outlet end (in FIG. 1 according to right) is inclined overall at a flat angle ⁇ (FIG. 1) of a few degrees with respect to the horizontal H.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Incineration Of Waste (AREA)
EP96118396A 1996-01-25 1996-11-15 Grille coulissante pour le traitement de matières en vrac Withdrawn EP0786637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602621 1996-01-25
DE19602621A DE19602621A1 (de) 1996-01-25 1996-01-25 Schubrost zur Behandlung von Schüttgut

Publications (1)

Publication Number Publication Date
EP0786637A1 true EP0786637A1 (fr) 1997-07-30

Family

ID=7783651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118396A Withdrawn EP0786637A1 (fr) 1996-01-25 1996-11-15 Grille coulissante pour le traitement de matières en vrac

Country Status (3)

Country Link
US (1) US5836758A (fr)
EP (1) EP0786637A1 (fr)
DE (1) DE19602621A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3128275A1 (fr) 2015-08-07 2017-02-08 Alite GmbH Grille de refroidisseur de clinker de ciment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6981455B2 (en) * 2002-03-08 2006-01-03 Lefcort Malcolm D Two-stage wet waste gasifier and burner
EP3828151A1 (fr) * 2019-11-26 2021-06-02 Cemgreen ApS Procédé de production de ciment comprenant un matériau cimentaire supplémentaire et ciment pouvant être obtenu par ce procédé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537523A1 (fr) 1991-10-16 1993-04-21 Krupp Polysius Ag Refroidisseur à grilles
EP0677714A1 (fr) 1994-04-14 1995-10-18 Krupp Polysius Ag Refroidisseur à grilles poussantes
DE4417422A1 (de) 1994-05-18 1995-11-23 Krupp Polysius Ag Schubrost

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461315A (en) * 1973-10-10 1977-01-13 Polysius Ag Method and apparatus for cooling fired material
DE3326694A1 (de) * 1983-07-23 1985-01-31 Deutsche Richard Kablitz Gesellschaft für Ökonomie der Dampferzeugungskosten und Feuerungskontrolle Richard Kablitz GmbH & Co KG, 6970 Lauda Schraegrost fuer feuerungen
FI85420C (fi) * 1987-12-22 1992-04-10 Ahlstroem Oy Anordning vid snedrost i foerbraenningsugns eldstad.
DE4114042A1 (de) * 1991-04-29 1992-11-05 Kloeckner Humboldt Deutz Ag Vorrichtung zur thermischen behandlung von schuettguetern
DE9304121U1 (de) * 1993-03-19 1994-07-21 Peters Ag Claudius Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler
DE4421552A1 (de) * 1994-01-24 1995-07-27 Krupp Polysius Ag Schubrostkühler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537523A1 (fr) 1991-10-16 1993-04-21 Krupp Polysius Ag Refroidisseur à grilles
EP0677714A1 (fr) 1994-04-14 1995-10-18 Krupp Polysius Ag Refroidisseur à grilles poussantes
DE4417422A1 (de) 1994-05-18 1995-11-23 Krupp Polysius Ag Schubrost

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3128275A1 (fr) 2015-08-07 2017-02-08 Alite GmbH Grille de refroidisseur de clinker de ciment

Also Published As

Publication number Publication date
US5836758A (en) 1998-11-17
DE19602621A1 (de) 1997-07-31

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