EP0167658B1 - Rostbodenelement zum Aufbau einer Rostfläche sowie Verfahren zur Warmbehandlung - Google Patents

Rostbodenelement zum Aufbau einer Rostfläche sowie Verfahren zur Warmbehandlung Download PDF

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Publication number
EP0167658B1
EP0167658B1 EP84110432A EP84110432A EP0167658B1 EP 0167658 B1 EP0167658 B1 EP 0167658B1 EP 84110432 A EP84110432 A EP 84110432A EP 84110432 A EP84110432 A EP 84110432A EP 0167658 B1 EP0167658 B1 EP 0167658B1
Authority
EP
European Patent Office
Prior art keywords
grate
gas
slots
brackets
bodies
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.)
Expired
Application number
EP84110432A
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German (de)
English (en)
French (fr)
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EP0167658A1 (de
Inventor
Karl Von Wedel
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Individual
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Individual
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6208661&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0167658(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT84110432T priority Critical patent/ATE35310T1/de
Publication of EP0167658A1 publication Critical patent/EP0167658A1/de
Application granted granted Critical
Publication of EP0167658B1 publication Critical patent/EP0167658B1/de
Expired legal-status Critical Current

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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
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements

Definitions

  • the invention relates to a grate floor element for the construction of a grate surface or a grate floor for receiving solids during their combustion, cooling or other heat treatment, the grate floor element having a surface perforated by gas outlet openings for carrying the solids located on the grate, also to one a plurality of such grate floor elements, as well as a process for the combustion, cooling or other heat treatment of solids located and conveyed on a heat-resistant grate floor by means of gases such as, for example Air, these gases used for heat treatment first flowing through the grate and then the solids on it.
  • gases such as, for example Air
  • grate floors for the above-mentioned treatment purposes for solids are usually formed from grate bars, grate plates or grate blocks, which are dimensioned in such a way that they do not warp under thermal expansion. These grate floors carry the solids and promote them due to their inclination or movement.
  • the funding can also be provided by scratches or by the gas used for treatment, usually air.
  • grate floors An essential feature of grate floors is openings for the gas to pass through. They are formed between the grate bars or incorporated into the grate plates or grate blocks. Special requirements for gas passage are met by inflow or nozzle plates. Such floors can be made of ceramic materials for use at high temperatures. Because of their low mechanical strength, however, they generally do not fulfill the conveying function of movable gratings.
  • Known grate floors meet the demand for good self-cooling and a defined resistance to uniform distribution of the gas in the solid to be treated above it in different ways.
  • Cooling fins or channels arranged on the gas side are described in DE-A-32 13 294.
  • DE-A-17 58 067 rotatably installed grate plates with an additional weight are described in order to counteract the buoyancy caused by the rust resistance, which can be greater than the dead weight of the grate element.
  • a key figure for the resistance of the grate is the open grate surface. 5% open grate surface means that the gas supplied in the openings assumes 20 times the speed and causes a considerable lift.
  • the high exit velocity of the gas in the vertical direction can be disruptive.
  • DE-A-20 05 869 describes a blind-like staircase wall in which a powder is conveyed transversely to the gas passage.
  • the blind stairs run against gravity, so that no solid can run out.
  • the blind solution has the disadvantage that a sufficient resistance for gas distribution is not realized, while nozzle bottoms have so far not been able to be realized in a mechanically promoting grate.
  • the invention is based on the object to provide mechanically stressable grate floor elements for building up a grate surface and thus a grate, which combines the advantages known from the various above-mentioned constructions of grate bars, grate plates, grate blocks and nozzle plates with regard to self-cooling, gas distribution (including resistance) and freedom from diarrhea , wherein the grate floor elements should in particular be economically producible and, with regard to the method, to achieve improved and more economical conveyance of solids to be treated on grate floors.
  • this object is achieved in the case of the grate floor element in that it is box-shaped and has lateral support webs which determine its width and between which the surface spans, on which the surface-defining bodies are arranged, the support webs moving in the manner of cheeks from the surface below and the surface-defining bodies between the cheeks to form fine gas slots substantially transverse to the cheeks, and that the gas slots are dimensioned and arranged with respect to the surface in such a way that they have a high resistance to gas passage and an obstacle to penetration or fall through of the transported solids.
  • Such a box-like grate floor element is comparable in its function to ventilation boxes which are covered with semi-permeable fabrics or porous substances and are used in the area of low temperatures and fine powders.
  • the e.g. Casting grate flooring elements that can be produced economically can be laid directly on grate girders without creating any further openings between the supporting bars.
  • only the formed gas slots determine the rust resistance and the gas outlet speed, which prevents the ingress of solid matter. If the gas supply is interrupted, the grate slots form an effective obstacle against grate diarrhea due to their dimensioning and arrangement, which are matched to the overall surface of the grate, so that devices for discharging and removing the grate diarrhea become superfluous.
  • the object on which the method is based is achieved in that the gases are fed to the solids essentially parallel to the grate bottom and in the conveying direction at high speed in the form of fine gas jets which are wide transversely to the conveying direction.
  • This makes it possible to significantly support the conveying process of the solids to be treated, which are located on a grate, with the aid of the treatment medium, and above all the transport of the fine particles of such solids can be supported.
  • a major and extremely important advantage is the additional cooling of the surface and the distribution of the gas from a layer parallel to the grate surface, regardless of the fineness of the slots.
  • the gas emerging from the slots provided in the grate bottom elements can form the conveying means for the solids located on the grate.
  • the conveyance of the solids is supported by moving the grate or by means of an additional conveying device through the gas outlet from the slots inclined in the conveying direction, it is with fine solids, here in connection with a horizontal grate, or with coarse solids in connection with an inclination of the Grate surface in the conveying direction possible, to convey the solid only with the process gas.
  • This is useful if the grate floor is rigid or the solid is too hot for mechanical conveying.
  • this conveyance of the heat treatment material which is significantly supported or even carried out by the process gas, it can be advantageous for the conveying process if the gas supply is pulsating.
  • the supporting webs and bodies can be provided as parts that can be attached to one another to form a rigid grate floor element. This makes handling and laying easier, while the easy manufacture by casting is retained.
  • the supporting webs and the body can be positively plugged together.
  • the advantage that can be achieved in this way is the mobility of the parts to one another as a result of the mechanical stress, which brings about or supports a self-cleaning effect.
  • the supporting webs and bodies can be provided in the form of two complementary basic components, each of which comprises a supporting web with a plurality of bodies extending transversely thereto.
  • Such grate floor elements are easy to cast and embody particularly stable, closed boxes with any narrow, internal gas slots.
  • the grate bottom element can have a bottom plate which extends between the two supporting webs and in which an opening for the gas supply into the interior of the box-like grate bottom element can be provided.
  • the ventilation can preferably take place via grate supports, as will be described in more detail below as support elements for the grate floor elements according to the invention, and, as already explained, gas streams adjacent to each other in the conveying direction can be acted upon in groups together with gas, which has advantages are achievable in terms of both the design effort and the procedural process.
  • the slots can be inclined towards the grate surface.
  • the inclination in the direction of conveyance which has a significant influence on the formation of an obstacle to rust diarrhea, preferably takes place in order to support the conveying process in accordance with the method according to the invention.
  • Such conveyance of the fine fraction of solids to be treated on the grate is particularly advantageous when using a scraper conveyor or with a sliding grate, since the fine fraction is mechanically difficult to convey.
  • the inclination of the slits can be less than 40 ° relative to the surface, as a result of which the escaping gas flow rests on the surface and thus particularly in front contributes in part to the implementation of the method according to the invention.
  • the slots are curved in a siphon-like manner at their gas inlet against gravity. This shape represents a particularly easy to manufacture and effective obstacle against rust diarrhea in connection with inclined slots.
  • the slots preferably have throttles and extensions. This further improves the internal cooling of the grate floor element through the Joule-Thomson effect. At the same time, resistance to gas passage is increased.
  • a majority of the grate floor elements designed according to the invention build up a grate in which the grate floor elements are arranged next to one another on grate supports in rows of grates and a plurality of such grate rows one behind the other, and in the further development of the invention the grate support hollow girders with connection to the gas supply and the grate floor elements sealing to the grate supports can be attached, openings for the gas supply from the grate carriers are provided in the interior of the grate floor elements and are in coverage with each other.
  • the grate can expediently comprise a device for the pulsating supply of the gas (air) to the slots or a valve for the controlled interval supply of the gas to the slots. Both devices allow the gas speed required for the conveyance to be set independently of the amount of gas required for the process.
  • a grate floor element 19, which forms part of a grate row 20 shown in FIG. 8 and explained further below, can be cast metal or ceramic and comprises, according to FIGS. 1 and 2, basic components 1 and 2 with main bodies 3 which form part of the effective grate surface or determine and are referred to in the text for simplicity only as "body”. These bodies 3 are cast alternately on mutually opposite supporting webs 4 of the basic components 1 and 2 and form slots 5 between them due to their dimensions in the longitudinal direction of the grate floor element.
  • the grate surface is formed from the bodies 3, the supporting webs 4 and the slots 5.
  • the area ratio of bodies 3: supporting webs 4: slots 5 can range from 1: 5: 1 to 40: 1: 1. Due to the formation of casting cones on the bodies 3, the slots 5 can, however, also deviate from the 90 degree angular position shown relative to the supporting webs.
  • oblique slots 5 are shown, which are preferably inclined so that they emerge in the conveying direction.
  • the inclination should not exceed an angle 23 (FIG. 5) of 40 ° in order to produce a flow of gas lying on the surface.
  • Particularly favorable results can be achieved with angles of inclination of 30 to 35 °.
  • the slot shapes 10 and 11 can also be combined.
  • the grate floor elements are formed from individual supporting webs 4 and bodies 3 by form-fitting assembly.
  • the body 3 have pins 8, which are received by holes 9 in the supporting webs 4.
  • brackets (not shown) can be fastened to the supporting webs 4 for receiving the bodies 3.
  • Such a simplified construction is preferred, for example, when using ceramic instead of metallic materials.
  • tie rods 15 (FIG. 2) which are guided through bores 7.
  • the distance between the supporting webs 4 can also be ensured by spacers 6.
  • the holding forces for the tight fit of the supporting webs 4 can also be applied to one another by pressure.
  • FIG. 7 and 8 show the arrangement of grate floor elements 19, here with siphon-like slots 10 on a grate carrier 16 for building up a grate row 20. It is readily known to the person skilled in the art that several such grate rows one after the other to form a grate of some kind, not shown here the known types (thrust, moving grate, stationary grate) are put together. With such an arrangement, the supporting webs 4 are designed in such a way that they can be fastened in a form-fitting manner on a grate support 16 designed as a hollow support.
  • the grate floor elements 19 are displaceable across the grate on the grate carrier 16 so that they can be changed during operation.
  • the air or gas is supplied via the grate support 16, which is therefore well cooled.
  • One of the two supporting webs 4 has a base plate 17 in order to ensure ventilation via the grate carrier 16. This type of ventilation enables a particularly narrow division of the air chambers under the grate floor.
  • the grate supports can contain adjustable flaps 24 for further air distribution.
  • the base plate 17 can rest on the subsequent grate base element, not shown, whereby a step grate is formed.
  • the promotion can take place in a known manner by the pushing movements of the rows of grates. Due to the air emerging from the slots 10, the frequency of this thrust movement necessary for the conveyance of solids is reduced in a manner which is more favorable for wear.
  • the grate carrier 16 has a connection 21 for the gas supply.
  • Devices 22 for pulsation or valves (not shown here) for controlled intake of the air are assigned to this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Incineration Of Waste (AREA)
  • Furnace Details (AREA)
  • Packages (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Fertilizers (AREA)
  • Solid-Fuel Combustion (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Surface Heating Bodies (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Revetment (AREA)
  • Semiconductor Lasers (AREA)
  • Recrystallisation Techniques (AREA)
EP84110432A 1983-09-08 1984-09-01 Rostbodenelement zum Aufbau einer Rostfläche sowie Verfahren zur Warmbehandlung Expired EP0167658B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110432T ATE35310T1 (de) 1983-09-08 1984-09-01 Rostbodenelement zum aufbau einer rostflaeche sowie verfahren zur warmbehandlung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3332592 1983-09-08
DE3332592A DE3332592C1 (de) 1983-09-08 1983-09-08 Aus Rostelementen zusammengesetzter Rostboden fuer Schuettgueter,wie Zementklinker

Publications (2)

Publication Number Publication Date
EP0167658A1 EP0167658A1 (de) 1986-01-15
EP0167658B1 true EP0167658B1 (de) 1988-06-22

Family

ID=6208661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110432A Expired EP0167658B1 (de) 1983-09-08 1984-09-01 Rostbodenelement zum Aufbau einer Rostfläche sowie Verfahren zur Warmbehandlung

Country Status (14)

Country Link
US (1) US4600380A (enrdf_load_stackoverflow)
EP (1) EP0167658B1 (enrdf_load_stackoverflow)
JP (1) JPH063351B2 (enrdf_load_stackoverflow)
AT (1) ATE35310T1 (enrdf_load_stackoverflow)
AU (1) AU575341B2 (enrdf_load_stackoverflow)
BR (1) BR8404492A (enrdf_load_stackoverflow)
CZ (1) CZ278615B6 (enrdf_load_stackoverflow)
DD (1) DD232539B5 (enrdf_load_stackoverflow)
DE (2) DE3332592C1 (enrdf_load_stackoverflow)
DK (1) DK162954C (enrdf_load_stackoverflow)
ES (1) ES293841Y (enrdf_load_stackoverflow)
IN (1) IN161737B (enrdf_load_stackoverflow)
TR (1) TR22619A (enrdf_load_stackoverflow)
ZA (1) ZA846987B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954688A (zh) * 2011-08-16 2013-03-06 Ikn有限公司 用于水泥熟料窑炉的格栅冷却器

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DE3734043A1 (de) * 1987-10-08 1989-04-20 Kloeckner Humboldt Deutz Ag Rostkuehler zum kuehlen von heissem schuettgut
DE3812425A1 (de) * 1988-04-14 1989-10-26 Peters Ag Claudius Kuehlerrostplatte
US5014632A (en) * 1988-08-16 1991-05-14 A. Ahlstrom Corporation Distributor plate in a fluidized bed reactor
DE3844493C1 (enrdf_load_stackoverflow) * 1988-12-30 1990-08-23 Karl Von Dipl.-Ing. 3057 Neustadt De Wedel
DE3933860A1 (de) * 1989-10-11 1991-04-18 Henkel Kgaa Verfahren zur herstellung von alkyl-polyethoxyethersulfaten
DE4039015A1 (de) * 1990-12-04 1992-06-11 Zementanlagen Und Maschinenbau Rostplatte
DE4103866A1 (de) * 1991-02-07 1992-08-13 Zementanlagen Und Maschinenbau Rostplatte
ES2097172T5 (es) * 1991-09-09 2000-10-16 Abrasion Eng Co Ltd Elemento de parrilla para la construccion de un emparrillado.
DE4134242A1 (de) * 1991-10-16 1993-04-22 Krupp Polysius Ag Kuehlrost
DK169218B1 (da) * 1992-10-06 1994-09-12 Smidth & Co As F L Ristelement til en ristbund, f.eks i en klinkerkøler
US5488784A (en) * 1993-02-24 1996-02-06 General Electric Company Ventilated tray for adsorbent desorption
DE4412885A1 (de) * 1994-04-14 1995-10-19 Krupp Polysius Ag Kühlrost
JPH08319142A (ja) * 1995-05-25 1996-12-03 Chichibu Onoda Cement Corp 焼塊冷却装置
DE19537904A1 (de) * 1995-06-28 1997-01-02 Krupp Polysius Ag Rostplatte
DE19622636A1 (de) * 1996-06-05 1997-12-11 Krupp Polysius Ag Rostplatte sowie Verfahren zur Herstellung einer Rostplatte
DE19633969A1 (de) * 1996-08-22 1998-02-26 Karl Von Wedel Schüttgutrost
BE1011760A3 (fr) * 1998-02-24 1999-12-07 Magotteaux Int Plaque de grille pour un refroidisseur.
DE10133973B4 (de) * 2001-07-17 2004-12-30 Michael Janzer Rost und Verfahren zum Aufbau eines Rostes bestehend aus untereinander formschlüssig verbundenen Lamellenkörpern
JP3404490B1 (ja) * 2002-05-27 2003-05-06 電気化学工業株式会社 可動火格子
US6964237B2 (en) * 2003-06-30 2005-11-15 Mark P. Hepp Grate block for a refuse incineration grate
DE10355822B4 (de) * 2003-11-28 2013-06-13 Khd Humboldt Wedag Gmbh Schüttgutkühler zum Kühlen von heißem Kühlgut
DE10359400A1 (de) * 2003-12-18 2005-07-14 Khd Humboldt Wedag Ag Schüttgutkühler zum Kühlen von heißem Kühlgut
US7093457B2 (en) * 2004-01-23 2006-08-22 Metso Minerals Industries, Inc. Annular cooler pallet construction
DE102007019530C5 (de) 2007-04-25 2018-01-04 Alite Gmbh Verfahren und Einrichtung zum Kühlen einer auf einem Förderrost liegenden Schüttgutschicht
DE102009009285B4 (de) * 2009-02-17 2013-11-28 Ikn Gmbh Rostplattenanordnung
BE1019360A3 (fr) * 2010-06-03 2012-06-05 Magotteaux Int Plaque de grille.
WO2013091633A1 (en) * 2011-12-21 2013-06-27 Flsmidth A/S Apparatus and method for transporting particulate material
DE102012009511B4 (de) * 2012-05-14 2013-12-19 Outotec Oyj Rostwagen zur Aufnahme von Schüttgut
PL3382311T3 (pl) * 2017-03-27 2020-06-01 Alite Gmbh Chłodnik klinkieru z przemieszczającymi się posuwisto-zwrotnie płytkami
EP3581867B1 (en) 2018-06-14 2020-10-07 Alite GmbH Clinker cooler and method for operating a clinker cooler
CN109028975A (zh) * 2018-07-09 2018-12-18 南通新兴机械制造有限公司 一种重卡牵引座微孔冷却篦板及其epc陶瓷砂芯法生产方法
EP3667222A1 (en) * 2018-12-11 2020-06-17 Paul Wurth S.A. Method for fitting or retrofitting a sinter cooler
MX2022000118A (es) 2019-07-05 2022-04-18 Hitachi Zosen Inova Ag Bloque de rejilla para una rejilla de combustion.

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JPH0210763U (enrdf_load_stackoverflow) * 1988-06-28 1990-01-23
JPH0738522Y2 (ja) * 1990-05-26 1995-09-06 カナメルーフシステム株式会社 止着構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954688A (zh) * 2011-08-16 2013-03-06 Ikn有限公司 用于水泥熟料窑炉的格栅冷却器
CN102954688B (zh) * 2011-08-16 2016-08-10 Ikn有限公司 用于水泥熟料窑炉的格栅冷却器

Also Published As

Publication number Publication date
ZA846987B (en) 1985-04-24
DD232539A5 (de) 1986-01-29
CZ278615B6 (en) 1994-04-13
BR8404492A (pt) 1985-08-06
ATE35310T1 (de) 1988-07-15
JPH063351B2 (ja) 1994-01-12
US4600380A (en) 1986-07-15
DK162954C (da) 1992-05-25
ES293841Y (es) 1987-12-01
AU575341B2 (en) 1988-07-28
CS8406766A2 (en) 1991-11-12
DK408984D0 (da) 1984-08-28
EP0167658A1 (de) 1986-01-15
IN161737B (enrdf_load_stackoverflow) 1988-01-30
ES293841U (es) 1987-06-16
DD232539B5 (de) 1995-04-20
DE3332592C1 (de) 1985-05-15
DE3472292D1 (en) 1988-07-28
DK408984A (da) 1985-03-09
DK162954B (da) 1991-12-30
AU3281084A (en) 1985-03-14
TR22619A (tr) 1988-01-11
JPS6091188A (ja) 1985-05-22

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