EP1139050A1 - Refroidisseur à grille - Google Patents

Refroidisseur à grille Download PDF

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Publication number
EP1139050A1
EP1139050A1 EP01106233A EP01106233A EP1139050A1 EP 1139050 A1 EP1139050 A1 EP 1139050A1 EP 01106233 A EP01106233 A EP 01106233A EP 01106233 A EP01106233 A EP 01106233A EP 1139050 A1 EP1139050 A1 EP 1139050A1
Authority
EP
European Patent Office
Prior art keywords
grate
cooling
arms
grate cooler
cooler according
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Withdrawn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
EP01106233A
Other languages
German (de)
English (en)
Inventor
Hubert Ramesohl
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
Publication of EP1139050A1 publication Critical patent/EP1139050A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/243—Endless-strand conveyor
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B2009/2492—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by series of little rams or ratchets, moving the charge along

Definitions

  • the invention relates to a grate cooler with a cooling gas flowing through it Cooling grate over which the items to be cooled such as. B. hot cement clinker is movable.
  • Grate coolers are used in the stone and earth industry the goods previously burned in an oven such as B. cement clinker or other mineral goods immediately afterwards on the cooling grate cool down strongly.
  • items to be cooled via the cooling section are special the thrust grate cooler widely used where the grate system from a variety of alternating fixed and movable
  • grate plate supports each with several with cooling air openings provided and essentially from bottom to top of Grate plates through which cooling air flows are attached.
  • the traveling grate cooler and moving grate cooler is a z.
  • this grate cooler type is the wear problem that occurs in particular with the moving grate cooler especially in the overlap area of neighboring moving and not moving rows of grate plates, caused by Cement clinker abrasion and good jamming in the overlap area of the grate plates.
  • the invention has for its object a further grate cooler variant to create that is relatively simple, whose Cooling grate is largely protected from wear and tear which is easy and can be operated with a high cooling efficiency.
  • the cooling grate is static, i. H. he no longer contains moving parts.
  • Above the fixed Cooling grids are several from each other transversely to the refrigerated goods transport direction spaced rotatably mounted tubular shafts, and on the side of the tubular shaft facing away from the fixed cooling grate are attached to this extending bucket arms, a reciprocating movement in the direction of refrigerated goods exercise.
  • These blade arms which act as one-armed levers, the one on the front and one on the back have a wedge surface, with their push surface in the are called chilled goods layer and they move in their forward and
  • the hot refrigerated goods bed successively oscillates backwards to the cooling grate end.
  • cooling air can be flowed through, wherein this cooling medium through openings distributed around the circumference of the tube shaft exit into the refrigerated goods bed and there additional cooling of the refrigerated goods can cause.
  • cooling grate is stationary and contains no moving parts, it is particularly advantageous to use cooling plates or Areas with refrigerated goods troughs or chilled goods pockets for holding and to hold refrigerated goods so that when operating the Grate cooler on the static cooling grate a lower pre-cooled Good bed layer or protective layer is formed over which the Hot goods to be cooled by means of the swinging bucket arms is moved.
  • the bearings and the pendulum drive or Pendulum drives of the shafts with the bucket arms are included Advantage outside the cooler side walls from the hot refrigerated goods arranged protected.
  • the swivel angle comprises between the thrust surface of the swinging bucket arms and the cooling grate level a range of about 160 ° to about 90 °, so a difference swivel angle range of about 70 °. That is, the Thrust surfaces of the swinging bucket arms are able to do that hot items to be chilled obliquely up to approximately parallel to the cooling grate level to move in the refrigerated goods transport direction, d. H. by the limitation The forward pendulum movement prevents the refrigerated goods from the push surfaces of the bucket arms pressed against the cooling grate becomes. At the same time, the pendulum movement of the bucket arms achieved that deep frying or caking of the hot chilled goods such as B.
  • the hot is discharged from a rotary kiln Cement clinker 10 via a Gutüberleit Anlagen 11 such.
  • the Cooling grate 12 is generally composed of individual grate plates, which are designed so that on the one hand a diarrhea of cooling Good 10 is avoided as much as possible by the cooling grate, and that on the other hand the permeability of the cooling grate to the cooling air 13 is maintained.
  • the movement of the hot clinker 10 over the cooled bed position 14 happens in such a way that above the cooling grate 12 transverse to the refrigerated goods transport direction several spaced apart rotatably mounted tubular shafts 15a, 15b, 15c etc. are arranged those on the side facing away from the cooling grate 12 upwards extending blade arms 16a, 16b, 16c are attached, which in Refrigerated goods transport direction a reciprocating pendulum movement Can exercise 17, which is highlighted in Figure 2 large.
  • blade arms 16a, 16b, 16c have one on their front Push surface on which by screwing, welding or other connection technology a wear plate 18 is attached. How can be seen particularly in Figure 3, the blade arms on their Back a wedge surface 19, d. H. when swinging back Bucket arms 16a, 16b, 16c slide them arrow-shaped or streamlined through the refrigerated goods bed, reducing the effort as well wear is minimized.
  • the hot refrigerated goods 10 from Start to end of the cooling grate 12 over the already cooled lower bed level 14 transported successively.
  • the forward pendulum motion of the bucket arms is limited in the way that the bucket arms do not place the refrigerated goods on the cooling grate 12 press, d. H.
  • the angle ⁇ between the thrust surface 18 of the bucket arms and the cooling grate level is at least about 90 °. All in all can the swivel angle ⁇ between the thrust surface 18 of the swinging bucket arms and the level of the cooling grate 12 an area from about 160 ° to 90 °, so the difference is a swivel angle range Include 17 of about 70 °.
  • Bucket arms 16 attached adjacent to each other, namely interchangeable, e.g. B. as shown in Figure 2 by a tongue and groove connection.
  • the z. B. consisting of a cast body Blade arm 16a has a groove 20 in its hub, into which a tongue 21 engages the hollow shaft 15a.
  • further grooves 22 are present in the hub of the blade arm 16a be, and by different occupancy of the grooves 20, 22nd etc. adjacent blade arms 16 on a shaft can also be a have different radial alignment or setting, wherein regionally when all bucket arms commute together different conveyor speeds in the to be transported hot refrigerated goods layer 10 can be achieved.
  • This can, for. B. a special one Influence on the avoidance of the so-called "red river” formation which are still red hot Clinker clump over the embankment section of the hot pent up Cool goods can roll down.
  • the blade arms 16 can be worn out completely Wear plates 18 are used up, also by implementation other places in the grate cooler according to the invention.
  • the blade arms 16a, 16b Adjacent shafts 15a, 15b offset from each other, i. H. on gap can be arranged, whereby with the swinging bucket arms the entire width of the refrigerated goods bed 10 in order to transport it as well as to break up baked clinker blocks is detectable.
  • the bearings 23 and the pendulum drive 24 with the bucket arms occupied shafts 15a etc. are protected outside the radiator side walls arranged.
  • These tubular shafts 15a etc. can be used for protection against thermal overload from a cooling medium such as e.g. B. flow of cooling air through the perforations, not shown the hollow shafts in the refrigerated goods bed for the purpose of its additional Cooling can leak.
  • a cooling medium such as e.g. B. flow of cooling air through the perforations, not shown the hollow shafts in the refrigerated goods bed for the purpose of its additional Cooling can leak.
  • Each wave 15a, 15b etc. is by one own drive 24 driven; would also be possible a common drive of several tubular shafts.
  • On the drive 24 is the Pendulum path 17 between the two end positions of the blade arms 16a etc. individually adjustable.
  • the grate cooler according to the invention is characterized by a high Cooling efficiency, largely protected against wear Cooling grate and a simple and particularly low Construction.
  • the invention is not only applicable to grate cooler types with chamber-ventilated grate plates, in which the lower part of the Radiator below the cooling grate in several separate Chambers is divided, but also for grate cooler types with row-ventilated Grate plates, where the cooling air is through hollow grate plate support beams is introduced from which the cooling air in it attached special provided with cooling air channels Incoming rust plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP01106233A 2000-03-25 2001-03-14 Refroidisseur à grille Withdrawn EP1139050A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10015054 2000-03-25
DE10015054A DE10015054A1 (de) 2000-03-25 2000-03-25 Rostkühler

Publications (1)

Publication Number Publication Date
EP1139050A1 true EP1139050A1 (fr) 2001-10-04

Family

ID=7636481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106233A Withdrawn EP1139050A1 (fr) 2000-03-25 2001-03-14 Refroidisseur à grille

Country Status (3)

Country Link
US (1) US6382963B2 (fr)
EP (1) EP1139050A1 (fr)
DE (1) DE10015054A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009024084A1 (fr) * 2007-08-20 2009-02-26 Yuzong Gao Dispositif de refroidissement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430680C (zh) * 2004-02-25 2008-11-05 南京凯盛水泥技术工程有限公司 一种工业窑炉用冷却装置
CN102297603A (zh) * 2011-07-04 2011-12-28 李晓梅 转动式粒状物料冷却机
DK179762B1 (en) * 2018-02-28 2019-05-13 Føns Companies Aps Walking Floor Cooler for particulate material with increased vertical shearing
CN115505657A (zh) * 2022-10-26 2022-12-23 中冶节能环保有限责任公司 一种高温钢渣高效冷却换热方法及篦式风冷床

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1030944A (fr) * 1951-01-12 1953-06-18 Four-tunnel
GB1227786A (fr) * 1968-11-23 1971-04-07
DE9403614U1 (de) * 1994-03-03 1995-07-06 Claudius Peters Ag, 21614 Buxtehude Rostkühler mit einem walzenförmigen Rostelement
EP0718578A2 (fr) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Méthode et refroidisseur pour refroidir un matériau particulaire

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE86667C (fr) * 1895-10-16 1896-05-22
FR2102623A5 (en) * 1970-08-12 1972-04-07 Francais Ciments Screen cooler - for cement clinker with air totally recirculated
DE3538059A1 (de) * 1985-10-25 1987-04-30 Krupp Polysius Ag Vorrichtung zum kuehlen von heissem gut
DE3616630A1 (de) * 1986-05-16 1987-11-19 Krupp Polysius Ag Kuehlvorrichtung
ES2073323T5 (es) * 1993-07-15 1999-07-01 Deutz Ag Placa de parrilla para enfriadores con parrilla de empuje para el enfriamiento de materiales calientes.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1030944A (fr) * 1951-01-12 1953-06-18 Four-tunnel
GB1227786A (fr) * 1968-11-23 1971-04-07
EP0718578A2 (fr) * 1992-12-23 1996-06-26 F.L. Smidth & Co. A/S Méthode et refroidisseur pour refroidir un matériau particulaire
US5890888A (en) * 1992-12-23 1999-04-06 F. L. Smidth & Co. A/S Method and cooler for cooling particulate material
DE9403614U1 (de) * 1994-03-03 1995-07-06 Claudius Peters Ag, 21614 Buxtehude Rostkühler mit einem walzenförmigen Rostelement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009024084A1 (fr) * 2007-08-20 2009-02-26 Yuzong Gao Dispositif de refroidissement

Also Published As

Publication number Publication date
US6382963B2 (en) 2002-05-07
US20010024776A1 (en) 2001-09-27
DE10015054A1 (de) 2001-09-27

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