EP0616184B1 - Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler - Google Patents

Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler Download PDF

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Publication number
EP0616184B1
EP0616184B1 EP94103601A EP94103601A EP0616184B1 EP 0616184 B1 EP0616184 B1 EP 0616184B1 EP 94103601 A EP94103601 A EP 94103601A EP 94103601 A EP94103601 A EP 94103601A EP 0616184 B1 EP0616184 B1 EP 0616184B1
Authority
EP
European Patent Office
Prior art keywords
grate
compensator
gas
overpressure
swinging frame
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 - Lifetime
Application number
EP94103601A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0616184A1 (de
Inventor
Hartmut Meyer
Siegfried Retzlaff
Heinz Kehrhahn
Thomas Staak
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.)
Claudius Peters AG
Original Assignee
BMH Claudius Peters 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
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Application filed by BMH Claudius Peters AG filed Critical BMH Claudius Peters AG
Publication of EP0616184A1 publication Critical patent/EP0616184A1/de
Application granted granted Critical
Publication of EP0616184B1 publication Critical patent/EP0616184B1/de
Anticipated expiration legal-status Critical
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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
    • 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
    • F27D2015/0233—Cooling with means to convey the charge comprising a cooling grate grate plates with gas, e.g. air, supply to the grate
    • 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
    • F27D2015/0246—Combination of fixed and movable grates
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Definitions

  • the invention relates to a device for treating a bulk material a gas, especially a kiln cooler, which has a sliding grate comprises at least one grate element which is moved to and fro in the conveying direction, which the gas from a stationary source via a pipeline can be fed within a substantially closed, pressurized Rust compensator to accommodate the Relative movement between the stationary source and the grate element includes.
  • the sliding grate In known coolers for cement clinker, the sliding grate is exposed alternating fixed and movable in the longitudinal direction of the grate transverse rows of rust plates together. Each transverse row is created by one below it Rust support held. For the fixed rows of grate plates this is also fixed. In contrast, the grate supports the movable rows of grate plates arranged on a swing frame, which extends essentially in the longitudinal direction of the grate and accordingly the desired grate plate movement back and forth and driven.
  • the cooling air is directed from the individual grate plates supply stationary cooling air source forth. It can be used as a hollow channel trained grate carrier and swing frame for cooling air supply to the Grate plates are used.
  • this presupposes that the Pipeline from the stationary source to the grate plate support or Vibration frame contains a device that compensates for the relative movement. In the prior art, this is done by means of flexible hose sections or corrugated tube compensators that keep the cooling air safe and tight manage, but consuming and prone to interference due to the Rust clinker clinker material.
  • the invention seeks the gas supply to the grate easier and less sensitive to interference to design.
  • EP-A-553 878 document according to Art. 54 (3) EPC for one part of the designated contracting states, also discloses a moving grate cooler all features of the invention with the exception of the feature that the leak according to the invention between the telescopically one inside the other displaceable parts of the compensator there by a Seal is avoided.
  • the solution according to the invention uses a sliding compensator, at the pipe parts are telescopically slidable.
  • Such relative Parts that move with respect to each other with tightness requirements are usually susceptible to wear and tear. At first glance, therefore, it appears Surprisingly, this solution is simpler and less sensitive to interference as corrugated tube compensators.
  • the key is in the Realization that the compensator does not have to be tight if the Leakage amount to maintain the desired overpressure in the lower grate area is used. This means that the compensator is tight is only necessary insofar as the leakage amount is less or not the gas requirement, which is necessary to maintain the Overpressure in the grate subspace is required. It is only necessary to measure the free cross-section between the compensator parts so that the leakage quantity meets the conditions mentioned.
  • the two compensator parts can each rigid on the one hand with the stationary gas supply devices and on the other hand be rigidly connected to the parts through which the grate plates be performed.
  • This ensures a simple structure and an uncomplicated Construction, but requires that between the compensator parts there is a game that the possible relative movement of the grate element carrier can take transverse to the direction of movement of the grate elements.
  • This game is usually larger than the desired leak rate makes desirable, so that facilities are required that narrow the free cross section.
  • sealing elements for the sake of simplicity.
  • these sealing elements are this on the one compensator part transverse to the longitudinal direction of the compensator floating attached while sliding with the other compensator part work together. Thanks to the floating attachment, you can become one Adjust the transverse displacement of the compensator parts to each other.
  • Appropriately can also be resilient sealing elements, the travel of which is such a transverse displacement the compensator parts is able to accommodate.
  • Such a resilient Execution of the sealing elements is particularly useful when straight stretched sealing strips can be used with accordingly planar peripheral surfaces of the other compensator part can cooperate. This should therefore have a polygonal scope, in particular rectangular his.
  • the sliding grate 1 of the cooler is formed by grate plates 2, 3, of which the grate plates 2 are fixed and the grate plates 3 protrude in the direction of the arrow 4 and are moving back. Change to a substantial part of the grate Cross rows of fixed grate plates 2 and movable grate plates 3 each other.
  • the direction of movement 4 of the grate plates runs parallel to Longitudinal grate and parallel to the upper and lower deck surfaces of the Plates 2, 3.
  • the fixed grate plates 2 are arranged on grate supports 5, which in turn is fixed in a manner not shown in the radiator frame are stored.
  • the grate supports 5 are hollow and serve in a known manner Way of supplying the cooling air to the plates 2.
  • the movable grate plates 3 are firmly connected to grate supports 6 which are supported by a swing frame 8 via bearing blocks 7.
  • Any swing frame 8 consists of rigidly interconnected side members 9, the via bearing surfaces 10 on rollers 11 fixed in the cooler frame lie on.
  • the bearing surfaces 10 run parallel to the grate plates 2, 3.
  • the swinging movement of the swing frame 8 under the influence not shown Drive means thus gives the movement of the movable grate plates 3 in the direction of arrow 4.
  • the grate supports 6, the bearing blocks 7, the longitudinal spars 9 of the swing frame 8 and their cross connections 13 are hollow, closed and flow-guiding interconnected so that they serve as pipelines for carrying the gas can serve to the grate plates.
  • At the cross connector 13 is rigid Air duct 14 connected. This stands in the longitudinal direction of the grate stationary air duct 15 opposite, that of a fan, not shown is fed.
  • the compensator 16 is arranged between the two consists of two telescopically interlocking pipe sockets, of which the Pipe socket 17 includes the pipe socket 18. Is between the two on all sides a distance 19, the possible changes in position of the swing frame 18 should take into account that due to the rigid connection to the Transfer nozzle 17.
  • the longitudinal direction of the compensator 16 is as indicated by arrow, parallel to the direction of movement 12 of the swing frame or to the direction of movement 4 of the grate plates.
  • the grate subspace 20 is enclosed on all sides, which is shown in FIG. 1 is indicated only schematically by lines 21 and 22.
  • Grate subspace 20 one wishes an overpressure compared to the atmospheric pressure, which counteract the rust diarrhea and the entry of false air should prevent. This excess pressure is maintained by supplying air.
  • Sealant provided. 3, the upper half of which is a longitudinal section and the lower half of which represents a side view of the compensator, these are designed as female connectors 25, which on the one hand at 26 are attached to the edge of the nozzle 17 and on the other hand resilient to the Fit the top of the nozzle 18.
  • the support point can be on one or both sides with a sliding-friendly and possibly wear-reducing Material must be occupied.
  • the female connector 25 is equipped with a considerable spring travel, the it enables lateral relative movements of the nozzle 17, 18, the can extend to a maximum of twice the distance 19 to follow. Since the sealing strips 25 shown in Fig. 3 only when straight Execution offer the required compliance, it is provided that the circumference of the nozzle 17, 18 is polygonal, so that with the individual, flat peripheral surfaces of the connector 18 straight sealing strips 25th can work together. So is in the example shown Cross section of the nozzle 17, 18 approximately square and is the edge of the Connector 17 equipped accordingly with four sealing strips 25. To the Corners are not connected, so that between their side edges 28, 29 results in a more or less large gap 30 through which cooling air can escape can. The columns 30 are dimensioned so that this with regard to the overpressure desired in room 20 is tolerable.
  • FIG. 4 Another seal design shows Fig. 4.
  • the transverse mobility thereby ensures that the bolts 33 with which the frame 32 on the Flange 31 is attached through correspondingly large holes 34 in the flange 31 are performed.
  • a circumferential sealing lip 35 is attached to the frame 32, which can be resilient, but with sufficient adjustment at the nozzle 18 does not have to be flexible, since it is thanks to the mobility of the frame 32 can follow the relative movements of the nozzle 18.
  • the Sealing member therefore need not be lip-shaped. in the in the simplest case, it would suffice if the frame 32 was reduced to a small one Game would be brought to the surface of the nozzle 18.
  • the nozzle 17 and 18 can be any Have cross-sectional shape. In this case, too sliding surfaces covered with sliding and wear-resistant material 36 his.
  • the cooling air it is desirable to use the cooling air to be able to set different areas. This depends on the different grate occupancy and the different areas Grain size of the firing material together. You also want as much cooling air as possible in the hot starting area of the cooler.
  • the arrangement offers the best conditions for adjusting the air supply, because the air supply lines have different fields in some areas of grate plates can be assigned.
  • the longitudinal spar 9 of the swing frame is through a wall 41 divided into different air-carrying sections, which are also about Lines 14, 14 'are acted upon separately by cooling air.
  • actuators 42 which allow the cooling air supply to the grate plate field, the Width at 43 and the length of which is indicated at 44.
  • actuators 45 are those of them fed grate carrier 6 through a partition 46 (see Fig. 2, left) divided so that it is also possible to supply the cooling air to sections 47 of a single row of grate plates differently.
  • the adjustability of the air supply to the smallest possible rust fields is special important in the hot grate area while looking at the end of the grate greater adjustability can suffice.
  • swing frames can be shown in the Example 2, arranged side by side, reducing the number of fields, which can be acted upon separately with cooling air, respectively is multiplied.
  • Several swing frames can also be used in the longitudinal direction be arranged. However, it is generally preferred to be longitudinal to use a uniform swing frame that is in itself different air duct sections is divided. It can also a compensator can be assigned to each longitudinal spar, as well as a Compensator can supply several longitudinal bars side by side.
  • the invention is not intended to approximate the amount of leakage bound the amount required to maintain the positive pressure. Rather, the decisive factor is the realization that leakage losses are even lower Economic aspects can be allowed.
  • the claim mentioned adjustment of the leak rate of the compensator to the gas requirement to maintain the overpressure in the grate subspace therefore only says that the leakage amount should be smaller or not significantly larger than the amount of gas required to maintain the positive pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Furnace Details (AREA)
  • Incineration Of Waste (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP94103601A 1993-03-19 1994-03-09 Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler Expired - Lifetime EP0616184B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9304121U DE9304121U1 (de) 1993-03-19 1993-03-19 Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler
DE9304121U 1993-03-19

Publications (2)

Publication Number Publication Date
EP0616184A1 EP0616184A1 (de) 1994-09-21
EP0616184B1 true EP0616184B1 (de) 2000-01-05

Family

ID=6890898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103601A Expired - Lifetime EP0616184B1 (de) 1993-03-19 1994-03-09 Vorrichtung zum Behandeln eines Schüttgutbetts mit einem Gas, insbesondere Brenngutkühler

Country Status (6)

Country Link
EP (1) EP0616184B1 (da)
AT (1) ATE188544T1 (da)
DE (2) DE9304121U1 (da)
DK (1) DK0616184T3 (da)
ES (1) ES2142885T3 (da)
GR (1) GR3033115T3 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08319142A (ja) * 1995-05-25 1996-12-03 Chichibu Onoda Cement Corp 焼塊冷却装置
DE19602621A1 (de) * 1996-01-25 1997-07-31 Krupp Polysius Ag Schubrost zur Behandlung von Schüttgut
DE10018142B4 (de) † 2000-04-12 2011-01-20 Polysius Ag Kühler und Verfahren zum Kühlen von heißem Schüttgut

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR624953A (fr) * 1926-11-22 1927-07-30 Procedes Ind Candlot Soc D Exp Appareil refroidisseur récupérateur pour produits défournés
US2055940A (en) * 1932-08-22 1936-09-29 Allis Chalmers Mfg Co Clinker cooler
DE926982C (de) * 1943-12-11 1955-04-28 Steinmueller Gmbh L & C Schuerrost
DE3343024A1 (de) * 1983-11-28 1985-06-05 Wärmetechnik Dr. Pauli GmbH, 8035 Gauting Luftgekuehlter beweglicher rost
JPS60147015A (ja) * 1984-01-09 1985-08-02 Takuma Co Ltd 並列揺動式階段スト−カ
DE4242374A1 (da) * 1992-01-31 1993-08-05 Kloeckner Humboldt Deutz Ag

Also Published As

Publication number Publication date
DE9304121U1 (de) 1994-07-21
ES2142885T3 (es) 2000-05-01
GR3033115T3 (en) 2000-08-31
DK0616184T3 (da) 2000-06-19
DE59409045D1 (de) 2000-02-10
EP0616184A1 (de) 1994-09-21
ATE188544T1 (de) 2000-01-15

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