EP4158264A1 - Kühler zum kühlen von schüttgut - Google Patents
Kühler zum kühlen von schüttgutInfo
- Publication number
- EP4158264A1 EP4158264A1 EP21725194.1A EP21725194A EP4158264A1 EP 4158264 A1 EP4158264 A1 EP 4158264A1 EP 21725194 A EP21725194 A EP 21725194A EP 4158264 A1 EP4158264 A1 EP 4158264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooler
- sealing
- seal
- conveying direction
- bulk material
- 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.)
- Granted
Links
- 239000013590 bulk material Substances 0.000 title claims abstract description 43
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000000112 cooling gas Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 88
- 238000005273 aeration Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 abstract description 18
- 239000003570 air Substances 0.000 description 31
- 239000000463 material Substances 0.000 description 27
- 230000003068 static effect Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- 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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
- F27B7/383—Cooling devices for the charge
-
- 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
Definitions
- the invention relates to a cooler for cooling bulk goods, the cooler having a seal for sealing the gap between the movable conveyor planks.
- Coolers for cooling bulk goods are used, for example, in cement works to cool the clinker that is burned in a kiln.
- the cooler usually has a conveying unit for transporting the material along a support surface through which cooling air can flow.
- conveyor planks are preferably used which, arranged next to one another, form a ventilation floor on which the material to be cooled rests.
- the conveyor planks are moved simultaneously in the conveying direction and at the same time against the conveying direction, whereby the material is transported in the conveying direction.
- the object of the present invention is to provide a cooler for cooling from bulk material, which has a seal for sealing a gap between two conveyor planks, which reliably prevents material from falling through the gap.
- a cooler for cooling bulk material in particular cement clinker, comprises, according to a first aspect, an aeration floor through which cooling gas can flow for receiving bulk material and for transporting the bulk material in the conveying direction.
- the ventilation floor comprises a plurality of conveyor planks which are movably attached in the conveying direction and counter to the conveying direction, with a seal being affixed between each two adjacent conveyor planks which has at least two sealing elements movably attached relative to one another.
- the sealing elements each have a sealing profile, the sealing profiles interacting with one another in such a way that a sealing gap is formed between them.
- the sealing gap has an at least double or multiple U-profile. It is also conceivable that the sealing gap has a triple or quadruple U-profile.
- the sealing elements are preferably designed and arranged with respect to one another in such a way that the sealing gap formed between them has an at least double or multiple U-profile.
- the sealing gap is formed between the sealing elements of the seal and represents the path that the material has to cover in order to get through the seal into the gap between two adjacent conveyor planks.
- a double U-profile has at least six changes in direction within the sealing gap which the material has to overcome in order to completely pass through the seal. The seal therefore reliably prevents bulk material from falling through the gap formed between two adjacent conveyor rails.
- a double U-profile can also be referred to as an M-profile, for example.
- the invention offers the advantage that no material accumulates within the seal and a relative movement of the sealing elements is reliably guaranteed.
- the sealing profiles of the respective sealing elements preferably overlap at least twice.
- the sealing gap has at least six, in particular seven or eight, angles of approximately 80 ° to 100 °, preferably 90 °.
- the cooler is in particular part of a cement production plant with a preheater for preheating raw meal in cross flow and a furnace for burning the preheated raw meal into clinker.
- the cooler is preferably direct to the furnace downstream so that the burnt clinker falls into the cooler due to gravity, for example.
- the cooler inlet area for example, adjoins the material inlet of the cooler and has, for example, a static grate which is arranged below the furnace outlet so that the bulk material emerging from the furnace falls onto the static grate due to gravity.
- the static grate is, for example, a grate set at an angle to the horizontal of 10 ° to 35 °, preferably 12 ° to 33 °, in particular 13 ° to 21 °, through which cooling air flows from below.
- the cooler has a ventilation base which adjoins the static grate, for example, and which is formed by a plurality of parallel conveyor planks arranged next to one another.
- the ventilation base receives the bulk material to be cooled and preferably has a plurality of cooling air passages, so that the ventilation base can be flowed through with cooling air from below.
- the material lying on the ventilation floor is cooled in the cross flow and moved in the conveying direction of the cooler.
- the conveyor planks are attached so as to be movable relative to one another in the conveying direction.
- the conveying direction is in particular the longitudinal direction of the cooler, in particular essentially horizontally.
- the conveyor planks are in particular all moved together at the same time in the conveying direction and non-simultaneously against the conveying direction.
- the material lying on the conveyor planks is also moved in the conveying direction with a simultaneous movement of the conveyor planks in the conveying direction.
- the material remains largely in its position since only individual conveyor planks are moved below the material. This process is repeated several times until the cooled material has reached the cooler outlet.
- a seal is attached between two adjacent conveyor planks.
- a seal is preferably also attached between the outer conveyor planks and the stationary cooler wall in order to seal the respective gap between the conveyor plank and the cooler wall.
- a sealing profile is designed as a U-profile.
- At least one sealing profile is preferably designed as a simple U-profile and in particular has exactly one U-profile.
- the U-profile is preferably formed from two parallel webs and one web orthogonal to these, the orthogonal web connecting the two parallel webs to one another.
- the parallel webs of the sealing profile are preferably aligned vertically.
- At least one of the sealing profiles is designed as a double U-profile.
- the sealing element preferably has a sealing profile that has exactly two U-profiles, one U-profile corresponding to that described above.
- the sealing profile has in particular three parallel webs which are each spaced apart from one another and preferably have the same length. For example, only the outer webs have the same length, the inner, middle web being shorter than the outer webs.
- the seal comprises a first sealing element with a sealing profile designed as a simple U-profile and a second sealing element with a sealing profile designed as a double U-profile.
- the first sealing element is preferably formed below the second sealing element.
- the second sealing element encloses the first sealing element, so that the surface on which the bulk material lies is only formed by the second sealing element.
- the first and the second sealing element are preferably arranged relative to one another in such a way that the sealing gap with the double U-profile is formed between them.
- the sealing elements are arranged without contact with one another.
- the sealing elements of a seal are each attached to conveyor planks that are adjacent to one another. It is also conceivable that the seal has more than two sealing elements, with at least one or a plurality of sealing elements of a seal preferably being attached to each conveyor plank.
- the seal has a chamber for collecting bulk material that has entered the sealing gap, and the chamber is formed between the at least two sealing profiles of a seal.
- the chamber is an extension of the sealing gap and is preferably arranged in the center of the seal.
- the chamber is preferably formed between the two U-profiles within the sealing gap. This offers the advantage that material that has passed through one of the U-profiles of the sealing gap is collected in a chamber so that it can be removed from this before it continues through the sealing gap.
- the chamber is arranged, for example, between the two webs of the sealing profile designed as a simple U-profile and is preferably delimited at the top by the middle web of the sealing profile designed as a double U-profile.
- the chamber preferably forms a low point of the sealing gap, so that material collected in the chamber would have to be moved against gravity in order to get out of the chamber.
- the seal has a compressed air generating device, which is connected to the chamber for applying compressed air to the chamber.
- the compressed air generating device is, for example, a fan.
- the compressed air generating device which is designed as a fan, is attached below the aeration base and is also used, in particular, to generate cooling air flowing through the bulk material.
- the chamber preferably has an outlet for discharging bulk material from the chamber, so that the bulk material can be blown out of the chamber by means of the compressed air generating device.
- the compressed air generating device is preferably designed in such a way that it generates compressed air which is suitable for conveying bulk material out of the chamber in the direction of an outlet.
- the compressed air generating device is designed in such a way that it applies compressed air to the chamber in the conveying direction. This enables the bulk material collected in the chamber to be easily transported, reliably preventing the bulk material from being blown back into the sealing gap.
- the seal comprises a plurality of seal segments which are arranged one behind the other and connected to one another in the conveying direction. The sealing segments are preferably designed identically so that they can be replaced easily, for example in the event of wear.
- the seal extends in the conveying direction over the entire length of the conveying elements.
- the sealing elements are made from different materials, for example.
- FIG. 1 shows a schematic representation of a cooler for cows bulk goods in a longitudinal sectional view according to an embodiment.
- FIG. 2 shows a schematic illustration of a section of a ventilation base of a cooler with a seal in a cross-sectional view according to an exemplary embodiment.
- the cooler 10 for cooling hot bulk material 20, in particular cement clinker.
- the cooler 10 is preferably arranged downstream of a furnace (not shown in FIG. 1), in particular a rotary kiln, for burning cement clinker, so that hot bulk material 20 emerging from the furnace falls onto the cooler 10, for example as a result of gravity.
- the cooler 10 has a material inlet 18 for admitting hot bulk material 20 into the cooler 10.
- the material inlet 18 is, for example, the area between the furnace outlet and the ventilation base of the cooler 10, the bulk material 20 preferably falling through the material inlet 18 as a result of gravity.
- the bulk material 20 to be cooled has a temperature of 1200 to 1450 ° C. in the material inlet 18, for example.
- the cooler 10 has a ventilation base 12 which is used to receive the bulk material 20 to be cooled.
- the ventilation floor 12 comprises a plurality of conveyor planks 14 which are arranged next to one another and together form the ventilation floor 12 on which the bulk material 20 to be cooled rests.
- the conveyor planks 14 extend in the conveying direction F, for example, over the entire length of the cooler 10.
- the ventilation floor 12, in particular each of the conveyor planks 14, has a plurality of cooling air passages or is designed as a grate, for example, so that cooling air from below the ventilation floor 12 passes through this and the bulk material 20 lying thereon can flow.
- two fans 22, 24 for applying cooling air to the bulk material 20 are arranged by way of example.
- the cooler 10 also has a housing 26 for delimiting the cooling space within the cooler 10 from the ambient air.
- a recuperation air outlet 28 is arranged in the housing 26, for example, through which cooling air heated in the cooler 10 leaves the cooler 10 and is fed to the upstream furnace, preheater or calciner, for example.
- the cooler 10 has a material outlet 30 through which the cooled bulk material 20 leaves the cooler 10.
- the bulk material 20 to be cooled is moved in the conveying direction F.
- the conveyor planks 14 are attached within the cooler 10 such that they can be moved in the conveying direction F and counter to the conveying direction F.
- the conveyor planks 14 can preferably be moved according to the “walking floor principle”, the conveyor planks 14 all being moved simultaneously in the conveying direction F and non-simultaneously against the conveying direction F.
- the cooler of FIG. 1 can additionally have a static grate, which is connected upstream of the ventilation base and in particular forms the inlet area of the cooler on which the bulk material to be cooled emerging from the furnace first hits.
- the static grate is, for example, a grate set at an angle to the horizontal of 10 ° to 35 °, preferably 12 ° to 33 °, in particular 13 ° to 21 °, through which cooling air flows from below.
- a section of the cooler is shown.
- FIG. 2 shows a detailed view of a seal 16 between two adjacent conveyor planks 14, two adjacent conveyor planks 14 being shown at least partially.
- the two adjacent conveyor planks 14 are attached in such a way that they can be moved relative to one another in the conveying direction F and against the conveying direction F.
- a gap 32 is formed between the adjacent conveyor planks 14 through which the bulk material 20 lying on the upper side of the conveyor planks 14 can fall through, in particular when the bulk material is conveyed and the conveyor planks 14 move relative to one another.
- conveyor elements 42, 44 are attached by way of example, which are preferably transverse to the
- Run conveying direction F and simplify the transport of the bulk material 20 in the conveying direction.
- the cooler 10 has a seal 16 which is arranged between two adjacent conveyor planks 14.
- the seal comprises, for example, two sealing elements 34, 36.
- Each of the sealing elements 34, 36 is fastened to a respective conveyor plank 14.
- the sealing elements 34, 36 are each screwed to the respective conveyor plank via screws 38, 40.
- the sealing elements each have a sealing profile 46, 48, the sealing profiles 46, 48 interacting with one another in such a way that a preferably substantially uniformly wide sealing gap 50 is formed between them.
- the seal 16 is, for example, a double labyrinth seal.
- a labyrinth seal is to be understood as a seal in which the sealing gap 50 has at least two angles of at least 90 °.
- one of the sealing profiles 46 is designed as a U-profile and has, in particular, two parallel webs that are spaced apart from one another.
- the webs extend, for example, in the vertical direction and are preferably of the same length.
- the other Sealing profile 48 is designed, for example, as a double U-profile and in particular has three parallel webs which are each spaced apart from one another and preferably have the same length. In particular, the middle web is shorter than the two outer webs.
- the two outer webs of the sealing profile 48 which is designed as a double U-profile, preferably enclose the webs of the sealing profile 46 cooperating with this at least partially or completely.
- a chamber 52 is formed within the seal 16, for example, in which material that has penetrated into the sealing gap 50 collects.
- the chamber 52 is formed, for example, between two webs of a respective sealing profile 46, 48.
- the chamber 52 is an enlargement of the sealing gap 50 and is preferably arranged in the center of the seal 16.
- the chamber 52 is arranged, for example, between the two webs of the sealing profile 46 designed as a simple U-profile and is preferably delimited at the top by the middle web of the sealing profile 48 designed as a double U-profile.
- the chamber 52 preferably extends over the entire length of the seal 16.
- the chamber 52 is connected to a compressed air generating device 54, which is only indicated schematically in FIG. 2 for reasons of clarity.
- the compressed air generating device 54 serves to act on the chamber 52 with compressed air, the compressed air generating device 54 being, for example, a fan.
- the chamber 52 preferably has an outlet for discharging bulk material from the chamber 52, so that the bulk material can be blown out of the chamber 52 by means of the compressed air generating device 54.
- the chamber 52 preferably forms a low point of the sealing gap 50.
- the compressed air generating device 54 can alternatively be formed by one of the fans 22, 24, so that the chamber 52 is acted upon with compressed air via the cooling air below the aeration base 12. In this case, there is then a natural, non-forced, air flow in the chamber 52.
- the seal 16 has, for example, a plurality of sealing segments which are arranged one behind the other in the conveying direction F and are not shown in the figures. Adjacent sealing segments are preferably connected to one another and together form the seal 16.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE20205389A BE1028415B1 (de) | 2020-06-02 | 2020-06-02 | Kühler zum Kühlen von Schüttgut |
DE102020206819.4A DE102020206819A1 (de) | 2020-06-02 | 2020-06-02 | Kühler zum Kühlen von Schüttgut |
PCT/EP2021/062924 WO2021244836A1 (de) | 2020-06-02 | 2021-05-17 | Kühler zum kühlen von schüttgut |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4158264A1 true EP4158264A1 (de) | 2023-04-05 |
EP4158264B1 EP4158264B1 (de) | 2024-05-22 |
EP4158264C0 EP4158264C0 (de) | 2024-05-22 |
Family
ID=75904958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21725194.1A Active EP4158264B1 (de) | 2020-06-02 | 2021-05-17 | Kühler zum kühlen von schüttgut |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230243590A1 (de) |
EP (1) | EP4158264B1 (de) |
CN (1) | CN115917233A (de) |
WO (1) | WO2021244836A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1939116B1 (de) * | 2003-05-08 | 2023-09-13 | Claudius Peters Projects GmbH | Vorrichtung zum kühlen von gebranntem schüttgut |
DE102004060207A1 (de) * | 2004-12-14 | 2006-06-22 | Polysius Ag | Verfahren und Kühler zum Kühlen von stückigem Gut |
DE202006012333U1 (de) | 2006-08-10 | 2007-12-13 | Claudius Peters Technologies Gmbh | Kühler für Schüttgut mit einer Abdichteinrichtung zwischen benachbarten Förderplanken |
DE102008003692A1 (de) * | 2008-01-09 | 2009-07-30 | Khd Humboldt Wedag Gmbh | Dichtung für einen Rostkühler |
CN202511636U (zh) * | 2012-02-28 | 2012-10-31 | 中国中材国际工程股份有限公司 | 步进式篦冷机活动篦床的列间密封装置 |
EP3118555B1 (de) * | 2015-07-17 | 2018-09-12 | Claudius Peters Projects GmbH | Vorrichtung zum behandeln, insbesondere zum kühlen, von schüttgut mit einem gas |
CN112146451A (zh) * | 2020-08-05 | 2020-12-29 | 天津市明星恒能科技发展有限公司 | 一种篦冷机的密封结构 |
-
2021
- 2021-05-17 CN CN202180039319.3A patent/CN115917233A/zh active Pending
- 2021-05-17 EP EP21725194.1A patent/EP4158264B1/de active Active
- 2021-05-17 US US18/007,644 patent/US20230243590A1/en active Pending
- 2021-05-17 WO PCT/EP2021/062924 patent/WO2021244836A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP4158264B1 (de) | 2024-05-22 |
CN115917233A (zh) | 2023-04-04 |
EP4158264C0 (de) | 2024-05-22 |
US20230243590A1 (en) | 2023-08-03 |
WO2021244836A1 (de) | 2021-12-09 |
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