EP2593740A1 - Dispositif de refroidissement de produits en vrac chauds - Google Patents

Dispositif de refroidissement de produits en vrac chauds

Info

Publication number
EP2593740A1
EP2593740A1 EP11728831.6A EP11728831A EP2593740A1 EP 2593740 A1 EP2593740 A1 EP 2593740A1 EP 11728831 A EP11728831 A EP 11728831A EP 2593740 A1 EP2593740 A1 EP 2593740A1
Authority
EP
European Patent Office
Prior art keywords
cooling tower
bulk material
gas flow
cooling
cooling device
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
Application number
EP11728831.6A
Other languages
German (de)
English (en)
Other versions
EP2593740B1 (fr
Inventor
Georg Aichinger
Michaela BÖBERL
Ernst Oberndorfer
Christoph Aichinger
Stephan Hattinger
Stefan Hötzinger
Johann Reidetschlaeger
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.)
Primetals Technologies Austria GmbH
Original Assignee
SIEMENS VAI METALS TECHNOLOGIES GmbH
Siemens VAI Metals Technologies GmbH Austria
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 SIEMENS VAI METALS TECHNOLOGIES GmbH, Siemens VAI Metals Technologies GmbH Austria filed Critical SIEMENS VAI METALS TECHNOLOGIES GmbH
Priority to PL11728831T priority Critical patent/PL2593740T3/pl
Publication of EP2593740A1 publication Critical patent/EP2593740A1/fr
Application granted granted Critical
Publication of EP2593740B1 publication Critical patent/EP2593740B1/fr
Priority to HRP20141015AT priority patent/HRP20141015T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F27D15/0286—Cooling in a vertical, e.g. annular, shaft
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/26—Cooling of roasted, sintered, or agglomerated ores
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C22B1/20—Sintering; Agglomerating in sintering machines with movable grates

Definitions

  • the present invention relates to a hot bulk cooling device.
  • the object of the present invention is to provide possibilities by means of which the heat generated during the cooling of hot bulk waste heat can be used more efficiently.
  • the task is done by a cooling device for hot
  • 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 stream,
  • That the cooling device comprises 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, - 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 material in the cooling tower slips down,
  • That the cooling device comprises a gas conveying device by means of which the gas flow is conveyed through the cooling tower,
  • the cooling device has a discharge device, via which the gas stream is discharged from the cooling tower, - that in the cooling tower, a plurality of gas flow guides is arranged, which, starting from arranged in the tower outer wall inlets to extend radially inward on the main axis,
  • gas flow guides are formed as elongated guides, which have over their seen in their respective direction of extension Ausrich length for the gas flow, so that the gas stream is passed into the hot bulk material located in the cooling tower,
  • Ab216 Road 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.
  • the gas flow guides form an angle of inclination with the horizontal, so that the gas flow guides increase toward the main axis.
  • the efficiency in exploiting the waste heat can be further optimized. This is especially true when the angle of inclination is chosen so that it corresponds approximately to the bulk material angle that forms the hot bulk material with the horizontal.
  • the angle of inclination is therefore preferably between 20 ° and 45 °, usually between 25 ° and 35 °.
  • the outlets are arranged exclusively on the underside of the gas flow guides. This configuration ensures that the risk ei ⁇ ner blockage of the outlets is minimized or even avoided altogether.
  • An arrangement of the outlets exclusively on the underside of the gas stream guides may for example be achieved in that the gas flow guides each comprise two side preparation ⁇ surface and the side portions bridging the roof area, that the side portions extend substantially vertically and that the roof area in cross-section the shape of an inverted " V "has.
  • the gas flow guides extend to the main axis or up to a arranged on the main axis hub. It is thereby achieved that the hot bulk material is practically ⁇ table flows through the entire cross section of the cooling tower from the gas stream and cooled.
  • the discharge device is arranged in the Turmau touchwan.
  • feeding device can be designed without regard to the design of the discharge device.
  • 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.
  • cooling tower is arranged in a building whose side walls extend from below to above the inlet
  • the removal means is attached ⁇ arranged inside the building, so that the extracted from the cooling tower bulk ⁇ initially is well within the building, -
  • the cooling device comprises an endless conveyor, by means of which the removed from the cooling tower
  • the endless conveying device has trough-like containers which, viewed transversely to the conveying direction, have a container cross-section and, viewed in the conveying direction, have a container length,
  • 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 flow are mini ⁇ mized.
  • FIG. 1 shows a cooling device for hot bulk material
  • 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.
  • 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 material 1 of poured into the top of the cooling tower 2. The hot bulk material 1 is thereby accumulated in the cooling tower 2.
  • the feeder 5 may be formed, for example, as a rotary chute according to the illustration of FIG 1, which is rotated at a predetermined speed n.
  • the speed n is usually relatively small.
  • the hot bulk material 1 is better distributed over the (horizontal) cross-section of the cooling tower 2.
  • An effective radius r with which the Zuzhoueinrich- tung 5, the hot bulk material 1 spread, but is considerably smaller than the radius R of the cooling tower in the re ⁇ gel 2nd ins ⁇ special is the effective radius r with which the feed device ⁇ 5 distributes the hot bulk material 1, usually a maximum of 30% of the radius R of the cooling tower 2.
  • a discharge cone is formed in the vicinity of the tower outer wall 6 (ie, the vertical or substantially vertical wall of the cooling tower 2).
  • the cone has a typical bulk material angle.
  • the bulk material angle is - depending on the bulk material 1 - usually between about 30 ° and about 38 °.
  • the cooling device furthermore has a removal device
  • the Ent ⁇ receiving device 7 may for example be designed as a push table, which moves in a circle.
  • the cooling device furthermore has a gas delivery device
  • the 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 conveying device 8 is preferably designed as a fan. In principle, a suction device is ever ⁇ but possible.
  • the cooling device furthermore has a discharge device 9. Via the discharge device 9, the gas stream 4 is discharged from the cooling tower 2.
  • the cooling tower 2 (relatively) cold. Typical temperatures are between 70 ° C and 150 ° C.
  • the cooling of the hot bulk material 1 takes place essentially by means of the conveyed through the cooling tower 2 gas stream 4. Accordingly, the gas stream 4 in the cold state (temperature typically equal to ambient temperature) in the cooling tower 2 passed and hot (temperatures typically between 600 ° C and 800 ° C) discharged from the cooling tower 2.
  • the cooling tower 2 is usually arranged in a building 10.
  • the building 10 has side walls 11.
  • the side walls 11 extend, starting from the bottom, up to an intermediate height h of the cooling tower 2.
  • the intermediate height h bezo ⁇ gene on the entire height H of the cooling tower 2, Zvi ⁇ rule as a rule 40% and 60% of the total amount H of the cooling tower 2.
  • the gas delivery device 8 can - in particular, if it is designed as a fan - be angeord ⁇ net within the building 10. As a rule, however, the gas delivery device 8 is arranged outside the building 10.
  • the discharge device 9 is arranged in the upper region of the cooling tower 2 and thus outside of the building 10.
  • the discharge device 9 can be arranged on the upper side 12 of the cooling tower 2.
  • the discharge device 9 is arranged in the tower outer wall 6, that is to say laterally.
  • a plurality of gas flow guides 13 is arranged. In principle, the minimum number of gas flow 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. In most cases, 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 14, the gas flow guides 13 extend radially inward towards the main axis 3 of the cooling tower 2.
  • the gas flow guides 13 have - over their seen in their respective extension direction length - outlets 15 for the gas stream 4.
  • the - at this time still cold - 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 seen over its length constant.
  • the cross-section ⁇ but reduces the gas flow passages 13 corresponding to the illustration of FIG 1 to the main axis 3 of the cooling tower 2 to.
  • the gas flow guides 13 are arranged in the direction of the main axis 3 of the cooling tower 2 in the central region 16 of the cooling tower 2.
  • 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 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. 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 flow 4 flows through the hot bulk material 1 in the cooling tower 2 from bottom to top (countercurrent principle). ,
  • the gas flow guides 13 can in principle run horizontally. However, the gas flow guides 13 preferably form an inclination angle ⁇ with the horizontal, as shown in FIG. 1, so that the gas flow guides 13 increase toward the main axis 3 of the cooling tower 2.
  • the tilt angle can ⁇ ß be determined as needed.
  • the angle of inclination ⁇ is preferably selected such that it approximately corresponds to the bulk material angle. In particular, the inclination angle ⁇ should be between 20 ° and 45 °. Particular preference is given to values between 28 ° and 40 °.
  • the outlets 15 in the gas flow guides 13 at any desired location.
  • the outlets 15 are arranged exclusively on the underside of the gas flow guides 13, as shown in FIG.
  • the gas flow guides 13, as shown in FIG 2 be open on its entire underside.
  • the gas stream guides 13 preferably each have two side portions 18 and a Dachbe on ⁇ rich 19th
  • the side areas 18 are substantially vertical.
  • the roof area 19 bridges over the side areas 18. It preferably has the shape of an inverted "V" in cross section.
  • the gas flow guides 13 end in front of the main axis 3 of the cooling tower 2.
  • the gas flow passages 13, however, extend to the main axis 3 (or up to the region of the main axis 3 of the cooling tower 2 at ⁇ parent "hub" 20).
  • the removal device 7 is usually arranged within the building 10 as well.
  • 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 Endlosför ⁇ der sexual 21.
  • the endless conveying device 21 has trough-like containers 23.
  • the containers 23 have a container cross section transversely to the conveying direction x. Viewed in the conveying direction x, they have a container length 1 according to FIG.
  • the Endlos desemblein ⁇ direction 21 may be formed for this purpose as a so-called Wellkantgurt with transverse studs.
  • the passage regions 22, through which the Endlosför ⁇ der adopted 21 (more precisely, the container 23) exiting from the building 10 and enter the building 10 are, preferably ⁇ designed as tunnels.
  • the tunnels 22 have a cross-section which, according to FIG. 4, is adapted to the container cross-section. If necessary, can be arranged on the sides of doing ⁇ neland sealing lips or the like.
  • the tunnels 22 furthermore each have, in the conveying direction x, a tunnel length L which is greater than the length of the container 1.
  • the tunnel length L is even Minim ⁇ least twice as large as the length of the container 1, for example about 2.5 times to about 3.5 times as large.
  • the present invention has many advantages.
  • Insbeson ⁇ particular is the cooling of hot bulk material 1 in the cooling tower 2 with a superior efficiency possible.
  • the cooling device according to the invention has only a few mechanical components . It is therefore cheaper to purchase and in terms of maintenance than the systems of the prior art.
  • a smaller amount of cooling air is required than in the prior art.
  • the gas delivery device 8 can therefore be smaller in size than in comparable cooling devices of the prior art.
  • any of the discharge device 9 downstream cleaning and dedusting devices can be dimensioned smaller than in the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Processing Of Solid Wastes (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un dispositif de refroidissement de produits en vrac chauds (1), comportant une tour de refroidissement (2) présentant un axe principal vertical (3), dans laquelle les produits en vrac chauds (1) sont refroidis au moyen d'un flux de gaz (4); un dispositif d'alimentation (5) permettant de verser les produits en vrac chauds (1) par le haut dans la tour de refroidissement (2) de telle manière que les produits en vrac chauds (1) s'accumulent dans la tour de refroidissement (2); un dispositif de prélèvement (7) permettant d'extraire les produits en vrac froids (1) par le bas, hors de la tour de refroidissement (2), de telle manière que les produits en vrac (1) restant dans la tour de refroidissement (2) glissent vers le bas; un dispositif de transport de gaz (8) permettant de transporter le flux de gaz (4) à travers la tour de refroidissement (2); et un dispositif d'évacuation (9) permettant d'évacuer le flux de gaz (4) hors de la tour de refroidissement (2). La tour de refroidissement (2) comporte une pluralité de conduites de flux de gaz (13) s'étendant radialement vers l'intérieur, d'entrées (14) présentes dans la paroi extérieur de la tour (6), vers l'axe principal (3). Les conduites de flux de gaz (13) sont conçues comme conduites allongées présentant des sorties (15) pour le flux de gaz (4) sur leur longueur vue dans la direction d'extension respective, de telle manière que le flux de gaz (4) est guidé dans les produits en vrac chauds (1) situés dans la tour de refroidissement (2). Les conduites de flux de gaz (13) sont disposées dans la zone centrale (16) de la tour de refroidissement (2), vu dans la direction de l'axe principal (3), le dispositif d'évacuation (9) étant disposé dans la zone supérieure de la tour de refroidissement (2). Le flux de gaz (4) circule ainsi de bas en haut à travers les produits en vrac chauds (1) situés dans la tour de refroidissement (2).
EP11728831.6A 2010-07-13 2011-06-29 Dispositif de refroidissement de produits en vrac chauds Active EP2593740B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL11728831T PL2593740T3 (pl) 2010-07-13 2011-06-29 Urządzenie chłodzące dla gorącego materiału sypkiego
HRP20141015AT HRP20141015T1 (hr) 2010-07-13 2014-10-22 Uređaj za hlađenje vrelog nagomilanog materijala

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1184/2010A AT510203B1 (de) 2010-07-13 2010-07-13 Kühlvorrichtung für heisses schüttgut
PCT/EP2011/060897 WO2012007277A1 (fr) 2010-07-13 2011-06-29 Dispositif de refroidissement de produits en vrac chauds

Publications (2)

Publication Number Publication Date
EP2593740A1 true EP2593740A1 (fr) 2013-05-22
EP2593740B1 EP2593740B1 (fr) 2014-07-30

Family

ID=44486896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11728831.6A Active EP2593740B1 (fr) 2010-07-13 2011-06-29 Dispositif de refroidissement de produits en vrac chauds

Country Status (12)

Country Link
EP (1) EP2593740B1 (fr)
KR (1) KR101618246B1 (fr)
AR (1) AR082162A1 (fr)
AT (1) AT510203B1 (fr)
BR (1) BR112013000772B1 (fr)
ES (1) ES2516915T3 (fr)
HR (1) HRP20141015T1 (fr)
PL (1) PL2593740T3 (fr)
RU (1) RU2555287C2 (fr)
TW (1) TWI496893B (fr)
UA (1) UA106666C2 (fr)
WO (1) WO2012007277A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980515A1 (fr) * 2014-07-28 2016-02-03 Paul Wurth S.A. Refroidisseur de frittage
PL3563108T3 (pl) * 2016-12-29 2022-05-23 Primetals Technologies Austria GmbH Urządzenie zawierające chłodnicę szybową i urządzenie wejściowe, oraz sposób chłodzenia gorącego spieku
CN109373768B (zh) * 2018-10-18 2020-01-10 湖南大学 一种具有循环台车的立式循环冷却机
CN112026049B (zh) * 2020-06-18 2022-04-22 浙江汇隆新材料股份有限公司 一种色母粒的干燥后级回收装置

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US2582116A (en) * 1948-08-24 1952-01-08 Phillips Petroleum Co Pebble heater chamber design
DE2229810A1 (de) * 1972-06-19 1974-01-17 Kloeckner Humboldt Deutz Ag Kuehlvorrichtung fuer stueckiges ofengut
CS185910B1 (en) * 1975-10-23 1978-10-31 Oldrich Kucerik Granulated material cooling apparatus
DD132999A1 (de) * 1977-07-01 1978-11-22 Gerhard Teichler Verfahren und vorrichtung zum waermetausch von schuettguetern
US4189299A (en) * 1978-03-13 1980-02-19 Calcimatic International, Limited Direct cooler for calcining apparatus
JPS55119138A (en) * 1979-03-09 1980-09-12 Sumitomo Metal Ind Ltd Cooling method for sintered ore and its device
JPS5877537A (ja) 1981-11-04 1983-05-10 Nagata Seisakusho:Kk 焼結鉱冷却機の漏風防止方法
JPH10265858A (ja) 1997-03-26 1998-10-06 Nkk Corp 高品質焼結鉱の製造方法
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CN201104092Y (zh) * 2007-08-28 2008-08-20 高家忠 内置式煤基海绵铁竖炉
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Also Published As

Publication number Publication date
HRP20141015T1 (hr) 2015-02-13
TWI496893B (zh) 2015-08-21
KR101618246B1 (ko) 2016-05-18
ES2516915T3 (es) 2014-10-31
AR082162A1 (es) 2012-11-14
BR112013000772B1 (pt) 2020-06-23
KR20130039333A (ko) 2013-04-19
EP2593740B1 (fr) 2014-07-30
AT510203B1 (de) 2012-05-15
PL2593740T3 (pl) 2015-03-31
RU2013105849A (ru) 2014-08-20
WO2012007277A1 (fr) 2012-01-19
TW201211273A (en) 2012-03-16
BR112013000772A2 (pt) 2016-05-24
UA106666C2 (uk) 2014-09-25
AT510203A1 (de) 2012-02-15
RU2555287C2 (ru) 2015-07-10

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