奥地利专利AT510203A1 COOLING DEVICE FOR HOT BULK

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专利摘要:

公开号:AT510203A1
申请号:T0118410
申请日:2010-07-13
公开日:2012-02-15
发明作者:Johann Dipl Ing Dr Reidetschlaeger；Stephan Ing Hattinger；Stefan Dipl Ing Hoetzinger；Ernst Ing Oberndorfer；Christoph Dipl Ing Aichinger；Georg Dipl Ing Dr Aichinger；Michaela Dipl Ing Dr Boeberl
申请人:Siemens Vai Metals Tech Gmbh；
IPC主号:

专利说明:

July 13, 2010 '2:27' 201013498
Siemens CIC P
No. 3523 p. 5 1
Description Cooling device for hot bulk material The present invention relates to a cooling device for hot bulk material.
When cooling hot bulk material - for example sintered iron ore - it is endeavored to use the resulting waste heat 10 as efficiently as possible.
State of the art are cross-flow coolers in the form of Ringab-down coolers or Ringabstreifkühlern. However, with ring subsea coolers, the waste heat recovery is limited to the first third of the cooler, because the exhaust air temperature is constantly decreasing. Bel Ringabstreifkühlern creates a mixture of hot and warmer exhaust air, the temperature is generally not as high as possible, so that also the efficiency of waste heat utilization is deteriorated. 20
The object of the present invention is to provide opportunities by means of which the heat generated during the cooling of hot bulk waste heat can be used more efficiently. 25 The task is done by a cooling device for hot
Bulk material with the features of claim 1 dissolved. Advantageous embodiments of the cooling device according to the invention are the subject matter of the dependent claims 2 to 9. According to the invention, a cooling device for hot bulk material is designed in such a way that the cooling device has a cooling tower with a vertical main axis in which the hot bulk material is cooled by means of a gas flow, 35 - that the cooling device has a feeder, by means of which the hot bulk material is poured from above into the cooling tower, so that the hot bulk material is accumulated in the cooling tower, 13/07 2010 12:28 [SE / EM NR 8480] ®005 13 July 2010 12:23 '201013498
Siemens CIC F
No. 3 5 2 3 6 2 - that the cooling device has a removal device, by means of which the bulk material is removed in the cold state down from the cooling tower, so that the remaining bulk material in the cooling tower slips down - 5 - that the cooling device has a gas delivery device , by means of which the gas flow is conveyed through the cooling tower, - that the cooling device has a discharge device, via which the gas flow is discharged from the cooling tower, 10 - that in the cooling tower a plurality of gas flow guides is arranged, which, starting from in the Tower outer wall arranged inlets to extend radially inward on the main axis, - that the gas flow guides are formed as elongated guides 15 which have over their seen in their respective extension direction length outlets for the gas stream, so that the gas stream, in the cooling tower located in the hot Bulk material is passed, - that the gas flow guides are arranged in the direction of the main axis hen in the central region of the cooling tower and the
Abführeinrichtung is disposed in the upper region of the cooling tower, so that the gas stream flows through the hot bulk material located in the cooling tower from bottom to top. 25 This configuration ensures that the gas flow does not flow through the hot bulk material in a crossflow, but in countercurrent. Mixing hot and warm air is no longer possible. It is preferably provided that the gas flow guides form an angle of inclination with the horizontal, so that the gas flow guides increase toward the main axis. With this configuration, the efficiency in exploiting the waste heat can be further optimized. This is particularly true when the angle of inclination is chosen to be approximately equal to the bulk material angle formed by the hot bulk material with the horizontal. The angle of inclination is therefore preferably between 20 ° and 45 °, usually between 25 ° and 35 °. 13/07 2010 Tue 12:26 [SE / EM HR 9490] @ 006 13. Jui 2010 12:28 201013498
3 i e rr > e η s CIO P
No. 3523 1 • · * · * · 3
It is preferably provided that the outlets are arranged exclusively on the underside of the gas flow guides. This configuration ensures that the risk of blockage of the outlets is minimized or even completely avoided.
An arrangement of the outlets exclusively on the underside of the gas flow guides can be achieved, for example, by the gas flow guides each having two side areas and a roof area bridging the side areas, the side areas being essentially vertical, and the roof area being in cross section in the form of an inverted " V " having. 15
Preferably, the gas flow guides extend to the main axis or up to a arranged on the main axis hub. This ensures that the hot bulk material flows through practically throughout the cross section of the cooling tower of the gas stream 20 and is cooled.
Preferably, the discharge device is arranged in the tower outer wall. This configuration ensures that the feeding device can be designed without regard to the configuration of the discharge device.
In a preferred embodiment of the present invention, the feed device is designed as a rotary chute. This embodiment achieves a better distribution of the hot bulk material over the cross-sectional area of the cooling tower.
It is preferably provided that the cooling tower is arranged in a building whose side walls extend, starting from below, past the inlet holes, that the removal device is arranged inside the building, so that the bulk material removed from the cooling tower opens first located inside the building, 13/07 2010 12:28 [SE / EM HR 8490] @ 007 13 Jul 20 1 0 1 2-28 Si a ns CIC P 201013498 ········
No. 3523 p. 3 5 10 15 20 25 30 - that the cooling device has an endless conveyor, by means of which the bulk material removed from the cooling tower is removed from the building, - the endless conveyor has trough-like containers which, viewed transversely to the conveying direction, have a container cross-section and Seen in the conveying direction have a container length, - that the container exit through two trained as a tunnel passage areas from the building and enter the building and - that the cross section of the tunnels is adapted to the container cross-section and the tunnel seen in the conveying direction each have a tunnel length, the is greater than the ßehäl-terlänge. This embodiment is particularly advantageous when the gas conveyor is designed as a fan. Through them it is achieved that leakage losses of the gas stream are minimized. Further advantages and details emerge from the following description of an embodiment in conjunction with the drawings. 1 shows a cooling device for hot bulk material, FIG. 2 shows a gas flow guide in cross section, FIG. 3 shows an endless conveying device from the side and FIG. 4 shows a passage region with a trough-shaped container in cross section. According to FIG. 1, a cooling device for cooling hot bulk material 1 (for example, small beads of sintered iron ore) has a cooling tower 2 with a vertical main axis 3. In the cooling tower 2, the hot bulk material 1 is cooled by means of a gas flow 4. The cooling device has a feed device 5. By means of the feeder 5, the hot bulk 1 of 13/07 2010 12:28 [SE / EM NR 8490] @ 008 35 3 Jul i 2010 12:28 Siemens CIC P No. 3523 p. 9 201013498: ::: · · ··. The hot bulk material 1 is thereby accumulated in the cooling tower 2.
The feeder 5 can be designed, for example, as a rotary chute, which is rotated at a predetermined speed n, as shown in FIG. The speed n is usually relatively small. For example, the speed n in the case of the embodiment of the feed device 5 as a rotary chute in the range between 0.25 revolutions / minute 10 and one revolution / minute.
By training as a rotary chute, the hot bulk material 1 is better distributed over the (horizontal) cross-section of the cooling tower 2. However, an effective radius r at which the feeder device 5 distributes the hot bulk material 1 is, on the rule, considerably smaller than the radius R of the cooling tower 2. In particular, the effective radius r at which the feeder 5 is hot Bulk material 1 is distributed, usually a maximum of 30% of the radius R of the cooling tower 2. Usually even 20 only numerical values are reached, which are between 10% and 25%. In the vicinity of the tower outer wall 6 (ie, the vertical or substantially vertical wall of the cooling tower 2), therefore, a discharge cone is formed. The fill cone has a typical bulk solids angle & on. The bulk material angle α is 25 - depending on the bulk material 1 - usually between about 30 ° and about 38 °.
The cooling device furthermore has a removal device 7. By means of the removal device 7, the bulk material 1 30 is removed from the bottom of the cooling tower 2. As a result, the bulk material 1 remaining in the cooling tower 2 slides downwards. The removal device 7 may be formed, for example, as a push-table, which moves in a circle. The cooling device furthermore has a gas delivery device 8. By means of the gas delivery device 8, the gas stream 4 is conveyed through the cooling tower 2. The gas conveyor 8 13/07 2010 DI 12:28 [SE / EM MR 8490] @ 009
No. 3523 p. 10 3. Jul ι 2010 12:28 201013498
Siemens CIC P »* ·· · t * ·» i «a ι l« ι »i« • * * · tk »« fl * * * · a «ι * * ...... 6 .... is preferably designed as a blower, in principle, however, a suction device is possible,
The cooling device furthermore has a discharge device 9 5. Via the discharge device 9, the gas stream 4 is discharged from the cooling tower 2.
When the bulk material 1 is fed to the cooling tower 2, it is hot, typical temperatures are up to 900 DC. When the bulk material 1 is removed from the cooling tower 2, it is (relatively) cold. Typical temperatures are between 70 ° C and 150 ° C. The hot bulk material 1 is cooled essentially by means of the gas stream 4 conveyed through the cooling tower 2. Accordingly, the gas stream 4 is passed into the cooling tower 2 in the cold state 15 (temperature typically equal to the ambient temperature) and kept hot (temperatures typically between 600 ° C.) and 800 ° C) discharged from the cooling tower 2.
The cooling tower 2 is usually in a building 10 angeord-20 net. The building 10 has string walls 11. The side walls 11 extend, starting from below, to an intermediate height h of the cooling tower 2, the intermediate height h, relative to the entire height H of the cooling tower 2, usually between 40% and 60% of the total height H of the cooling tower. 2 25
The gas delivery device Θ can - in particular, if it is designed as a fan - be disposed within the building 10. As a rule, however, the gas delivery device 8 is arranged outside the building 10. The discharge device 9 30 is arranged in the upper region of the cooling tower 2 and thus outside of the building 10th
The discharge device 9 can be arranged on the upper side 12 of the cooling tower 2. Preferably, the Abführeinrich-35 device 9 is arranged in the tower outer wall 6, that is laterally.
In the cooling tower 2, a plurality of gas flow guides 13 is arranged. In principle, the minimum number of gas flows is 13/07 2010 01 12:28 [SE / EM NR 8490] @ 010 13. Ju 'I 2010 12:28 Siemens CIO P Mr. 3523 3. 1 1 201013498 ll l. ** .ϊ ·· «··« 4 «« ...... T ** guides 13 two. In practice, however, at least six gas flow guides 13 are present. The maximum number of gas flow guides 13 is not limited in principle. In general, however, numerical values of 40 are not exceeded. Most 5, the number of gas flow guides 13 is between 8 and 16.
The gas flow guides 13 are formed as shown in FIG 1 as elongated guides. They have inlets 14 which are arranged in the tower outer wall 6. Starting from the inlets 10 14, the gas flow guides 13 extend radially in nen on the main axis 3 of the cooling tower 2 to. The course of the gas flow guides 13 may, for example, be spoke-like (shown), crescent-shaped, etc. Other courses are possible. It is only important that the distance to the main "15 axis 3 of the cooling tower 2 along the longitudinal extent of the gas flow guides decreases.
The gas flow guides 13 have - over their seen in their respective extension direction length - outlets 15 for the gas stream 4 on. The - still cold at this time - gas stream 4 is therefore introduced via the inlets 14 in the gas flow guides 13 and passed from there via the outlets 15 in the cooling tower 2 located in the hot bulk material. The cross-section of the gas flow guides 13 can be constant over its length. However, the cross-section of the gas flow guides 13 preferably decreases towards the main axis 3 of the cooling tower 2, as shown in FIG. 30 The central region 16 extends from about 30% of the total height H of the cooling tower 2 to about 70% of the total height H of the cooling tower 2. Regardless of the exact arrangement 35 of the gas flow guides 13, however, the gas flow guides 13 are arranged below the discharge device 9. When the cooling tower 2 is arranged in the building 10, the inlets 14 are further arranged below the roof 17 of the building 10. 13/07 2010 Tue 12:28 [SE / EM NR 8490] 0011 13. July 2010 12:28 201Ü13498
S i smens CIC P
No. 35 23 p. 12
The side walls 11 of the building 10 therefore extend beyond the inlets 14 of the gas flow guides 13. Due to the arrangement of the gas flow guides 13 below the discharge device 9, the gas stream 4 flows through the hot bulk material 1 which is sensitive in the cooling tower 2 from bottom to top (countercurrent principle ).
The gas flow guides 13 can in principle run horizontally. Preferably, the gas flow guides 13, however, 10 according to the illustration of FIG 1 with the horizontal an inclination angle ß, so that the gas flow guides 13 rise to the main axis 3 of the cooling tower 2 2u. The inclination angle β can be determined as needed. Preferably, the angle of inclination β is chosen such that it approximately corresponds to the bulk material angle lt x. In particular, the inclination angle β should be between 20 ° and 45 °. Particularly preferred are values between 28 * and 40 °.
In principle, it is possible to provide the outlets 15 in the gas flow guides 20 at any desired location. However, it is preferred that the outlets 15 are arranged exclusively on the underside of the gas flow guides 13, as shown in FIG. In particular, the gas flow guides 13, as shown in FIG 2, be open on its entire bottom 25. In this case, the gas flow guides 13 preferably each have two side areas 18 and a roof area 19. The side areas 18 are substantially vertical. The roof area 19 bridges the side areas 18. It preferably has the shape of an inverted "V " on,
It is possible that the gas flow guides 13 end in front of the main axis 3 of the cooling tower 2. However, the gas flow guides 13 preferably extend as far as the main axis 3 (b2w, 35) to a "hub" 20 arranged in the region of the main axis 3 of the cooling tower 2. 13/0 2010 12:28 [SE / EM HR 8430] @ 012 13, Ju1 i 2010 12:28 201013498
S: eme ns CIC P
No, 3523 p. 13 • · * ** $
When the cooling tower 2 is disposed within the building 10, the removal device 7 is usually disposed within the building 10. The removed from the cooling tower 2 bulk material 1 is therefore initially (still) within the building 10. The cooling device therefore has in this case a device by means of which the removed from the cooling tower 2 bulk material 1 is discharged from the building 10. This device is preferably designed according to FIG. 3 as an endless conveyor device 21. 10
In particular, in the case of the formation of the gas conveyor 8 as a fan, so if the gas stream 4 is first blown into the building 10 and only from there via the inlet se 14 is introduced into the gas flow guides 13, 15 passage areas 22, in which the endless conveyor 21 exits the building 10 and re-enters the building 10, be relatively tight. For this purpose, it is provided according to FIG. 3 that the endless conveying device 21 has trough-like containers 23. The container 23 have transversely to the conveyor 20 direction x seen in FIG 4, a container cross-section. Viewed in the conveying direction x, they have a container length 1 according to FIG. For example, the endless conveyor 21 2U may be designed for this purpose as a so-called corrugated belt with transverse lugs. 25
The passage areas 22 through which the endless conveyor 21 (more specifically, the containers 23) exit the building 10 and enter the building 10 are preferably formed as a tunnel. The tunnels 22 have a cross-section which, according to FIG. 4, is adapted to the container cross-section. Optionally, sealing lips or the like may be arranged on the sides of the tunnel walls.
The tunnels 22 furthermore each have a tunnel length L seen in the conveying direction x, which length is greater than the container length 35. Preferably, the tunnel length L is even at least twice as large as the container length 1, for example, about 2.5 ~ ünal to about 3.5 times as large. 13/07 2010 Tue 12:28 [SE / EM NR 8490] @ 013 13. Jul i 2010 12:28 201013498
Siemens CIC P
No. 3523 3. 14 * 1 (3
The present invention has many advantages. In particular, the cooling of the hot bulk material 1 in the cooling tower 2 is possible with a superior efficiency. Furthermore, the cooling device according to the invention has only a few mechanical construction parts. It is therefore cheaper to purchase and to maintain than the systems of the prior art. Moreover, in the present invention, a smaller amount of cooling air is required than in the prior art. The gas delivery device 8 can therefore be dimensioned to be smaller than in comparable cooling devices of the prior art. Also, any cleaning and dedusting devices arranged downstream of the removal device 9 can be dimensioned smaller than in the prior art. The above description is only illustrative of the present invention. The scope of the present invention, however, is intended to be determined solely by the appended claims. 13/07 2010 Tue 12:28 [SE / EM NR 8490] @ 014 20 1 0 12:29 3 e m e ns 201013498
CIC P + # «**» * * * * * »» »» »4 * * * * * * * * * * * * * * * * * * * * * * * · * · | · I *
No. 3523 p. 19 15
REFERENCE SIGNS LIST 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 h, H 1, L n r, R x α ß hot bulk material cooling tower main axis gas flow 2uführeinrichtung
Tower external wall
removal device
Gas conveyor
Abführeinriehtung
building
side walls
top
Gas Tram tours
inlets
outlets
the central region
top, roof
page sections
roof
hub
Endless conveyor
Passage regions
Container heights lengths
rotation speed
Radii conveyance
Bulk material angle inclination angle 13/07 2010 DI 12:28 [ΞΕ / ΕΜ HR 8490] @ 019

权利要求:
Claims (2)
[1]
July 13, 2010 '2:29 20101349Θ S: e rr. 1. A cooling device for hot bulk material (1), - wherein the cooling device comprises a cooling tower (2) with a main vertical axis ¢ 3), in which the hot bulk material (1) by means of a gas stream (4) is cooled, - wherein the cooling device comprises a feeder (5), by means of which the hot bulk material (1) from above into the cooling tower (2) is poured so that the hot bulk 10 (1) in the cooling tower (2) is piled up, - wherein the cooling device has a removal device (7), by means of which the bulk material (1) in the cold state down from the cooling tower ( 2), so that the bulk material (1) remaining in the cooling tower (2) slides downwards, - wherein the cooling device has a gas delivery device (8), by means of which the gas flow (4) is conveyed through the cooling tower (2) is -, wherein the cooling device is a discharge device (9) to -20, via which the gas stream (4) from the cooling tower (2) is discharged, - wherein in the cooling tower (2) a plurality of gas flow guides (13) is arranged, which, starting from in the tower outer wall (Θ) arranged Admitting (14) to extend radially inwardly 25 on the main axis (3), - wherein the gas flow guides (13) are formed as elongated Führun conditions, the outlet over their seen in their respective direction of extension (15) for the gas flow (4 ), so that the gas stream (4) is conducted into the hot bulk material (1) located in the cooling tower (2), - the gas flow guides (13) being viewed in the direction of the main axis (3) in the central region (16) of the cooling tower ( 2) are arranged and the discharge device (9) in the upper region of the cooling tower (2) is arranged, so that the gas stream (4) 35 in the cooling tower (2) located hot bulk material (1) from below. flows through the top. 13/07 2010 Tue 12:28 [SE / EM NR 8490] 0015
[2]
2. Cooling device according to Claim 1, characterized in that the gas flow guides (13) have an angle of inclination (15) with the horizontal. (Ne 201) 12:29 Siemens CIC P No. 3523 201013498 ß), so that the gas flow guides (13) 5 on the main axis (3) to rise. 3. Cooling device according to claim 2, characterized in that the angle of inclination (ß) is chosen such that it corresponds approximately to the bulk material angle ()), which forms the hot bulk material (1) with the horizontal. 4. Cooling device according to claim 1, 2 or 3, characterized in that the outlets (15) are arranged exclusively on the underside of the gas flow guides (13). 5. Cooling device according to claim 4, characterized in that the gas flow guides (13) each have two side regions (18) and a lateral region (18) bridging roof region (19), that the side regions (18) extend substantially vertically and that of Roof area (19) in cross-section the shape of an inverted "V " having. 6. Cooling device according to one of the preceding claims, characterized in that the gas flow guides (13) extend to the main axis (3) or to a on the main axis (3) arranged hub 30 (20), 7. Cooling device according to one of above claims, characterized in that the discharge device (9) in the tower outer wall (6) is arranged ange-35. 8. Cooling device according to one of the above claims, characterized 13/07 2010 01 12:28 [SE / EM NR 8430] @ 016 .July 2010 12:29 201013498 Siemens CIC P No. 3523 S, 17 5 10 15 20 25 30 that the feed device (5) is designed as a rotary chute. 9. Cooling device according to one of the above claims, characterized in that - the cooling tower (2) is arranged in a building (10) whose side walls (11) extend from the bottom to the inlets (14), - the removal device (7) is arranged inside the building (10), so that the bulk material (1) removed from the cooling tower (2) is initially located inside the building (10), - the cooling device has an endless conveying device (21) in which the bulk material (1) removed from the cooling tower (2) is removed from the building (10), - that the endless conveyor (21) has trough-like containers (23) which, viewed transversely to the conveying direction (x), have a container cross-section and in the conveying direction ( x) seen a container length (1), - that the container (23) exit through two trained as a tunnel passage areas (22) from the building (10) and enter the building (10) and - that the Quersch nitt the tunnel (22) is adapted to the container cross-section and the tunnel (22) seen in the conveying direction (x) each have a tunnel length (L) which is greater than the container length (1). 10. Cooling device according to one of the above claims, characterized in that the gas conveying device (8) is designed as a fan. 13/07 2010 Tue 12:28 [SE / EM NR 8490] @ 017

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引用文献:

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US7887030B2|2008-05-19|2011-02-15|Spx Cooling Technologies, Inc.|Wet/dry cooling tower and method|

DE102008031219B3|2008-07-03|2009-06-25|Gea Energietechnik Gmbh|Hybrid cooling tower, has mixing assembly comprising completely open trapezoidal lower surface and open rectangular output side, and openings arranged in trapezoidal side wall of mixing assembly|EP2980515A1|2014-07-28|2016-02-03|Paul Wurth S.A.|Sinter cooler|

RU2762953C2|2016-12-29|2021-12-24|Прайметалз Текнолоджиз Аустриа ГмбХ|Cooling of bulk material|

CN109373768B|2018-10-18|2020-01-10|湖南大学|Vertical type circulating cooling machine with circulating trolley|

CN112026049A|2020-06-18|2020-12-04|浙江汇隆新材料股份有限公司|Dry back-stage recovery unit of masterbatch|

法律状态:
2016-06-15| PC| Change of the owner|Owner name: PRIMETALS TECHNOLOGIES AUSTRIA GMBH, AT Effective date: 20160415 |

2017-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20160713 |

优先权:

申请号 | 申请日 | 专利标题

ATA1184/2010A|AT510203B1|2010-07-13|2010-07-13|COOLING DEVICE FOR HOT BULK|ATA1184/2010A| AT510203B1|2010-07-13|2010-07-13|COOLING DEVICE FOR HOT BULK|

PCT/EP2011/060897| WO2012007277A1|2010-07-13|2011-06-29|Cooling device for hot bulk material|

BR112013000772-9A| BR112013000772B1|2010-07-13|2011-06-29|Cooling apparatus for hot bulk materials|

KR1020137003566A| KR101618246B1|2010-07-13|2011-06-29|Cooling device for hot bulk material|

ES11728831.6T| ES2516915T3|2010-07-13|2011-06-29|Cooling device for hot bulk material|

RU2013105849/02A| RU2555287C2|2010-07-13|2011-06-29|Cooling device for hot bulk material|

UAA201300422A| UA106666C2|2010-07-13|2011-06-29|COOLING DEVICE FOR HOT BREAKING MATERIAL|

EP11728831.6A| EP2593740B1|2010-07-13|2011-06-29|Cooling device for hot bulk material|

PL11728831T| PL2593740T3|2010-07-13|2011-06-29|Cooling device for hot bulk material|

TW100124425A| TWI496893B|2010-07-13|2011-07-11|Cooling apparatus for hot bulk goods|

ARP110102511A| AR082162A1|2010-07-13|2011-07-13|REFRIGERATION DEVICE FOR HOT BULK MERCHANDISE|

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