EP2593740B1 - Kühlvorrichtung für heisses schüttgut - Google Patents

Kühlvorrichtung für heisses schüttgut Download PDF

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Publication number
EP2593740B1
EP2593740B1 EP11728831.6A EP11728831A EP2593740B1 EP 2593740 B1 EP2593740 B1 EP 2593740B1 EP 11728831 A EP11728831 A EP 11728831A EP 2593740 B1 EP2593740 B1 EP 2593740B1
Authority
EP
European Patent Office
Prior art keywords
gas flow
cooling tower
cooling
cooling apparatus
bulk goods
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.)
Active
Application number
EP11728831.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2593740A1 (de
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 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 Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to HRP20141015AT priority Critical patent/HRP20141015T1/hr
Priority to PL11728831T priority patent/PL2593740T3/pl
Publication of EP2593740A1 publication Critical patent/EP2593740A1/de
Application granted granted Critical
Publication of EP2593740B1 publication Critical patent/EP2593740B1/de
Active legal-status Critical Current
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
    • F27D15/0286—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

  • Such a cooling device is known from JP 55 119 138 A and also from the JP 10 265 858 A is known.
  • 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 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 °.
  • outlets are arranged exclusively on the underside of the gas flow guides.
  • An arrangement of the outlets exclusively on the underside of the gas flow guides can be achieved, for example, in that the gas flow guides each have two side areas and a roof area bridging the side areas, that the side areas are essentially vertical, and that the roof area has the shape of an inverted "V" in cross section. having.
  • 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 and is cooled.
  • the discharge device is arranged in the tower outer wall.
  • the 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.
  • 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.
  • a cooling device for cooling hot bulk material 1 (for example small sintered iron ore balls) 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 can according to the representation of FIG. 1 For example, be designed as a rotary chute, which is rotated at a predetermined speed n.
  • the speed n is usually relatively small.
  • an effective radius r with which the feeder 5 distributes the hot bulk material 1, is generally considerably smaller than the radius R of the cooling tower 2.
  • the effective radius r at which the feeder 5 distributes the hot bulk material 1 is 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 (that is, 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 7.
  • the removal device 7 By means of the removal device 7, the bulk material 1 is taken down from the cooling tower 2. As a result, the bulk material 1 remaining in the cooling tower 2 slides downwards.
  • the removal 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 8.
  • 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, however, a suction device is 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 bulk material 1 When the bulk material 1 is supplied to the cooling tower 2, it is hot. Typical temperatures are up to 900 ° C. 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 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 below, to an intermediate height h of the cooling tower 2.
  • the intermediate height h, relative to the total height H of the cooling tower 2, is generally between 40% and 60% of the total height H of the cooling tower 2 ,
  • the gas delivery device 8 may be arranged within the building 10, in particular if it is designed as a fan. 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 laterally.
  • a plurality of gas flow guides 13 is arranged.
  • the minimum number of gas flow guides 13 two.
  • 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 according to FIG. 1 designed 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 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 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.
  • 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 seen over its length constant. However, the cross-section of the gas flow guides 13 preferably decreases as shown in FIG 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.
  • the gas flow guides 13 are arranged below the discharge device 9.
  • 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 9 flows through the gas stream 4 located in the cooling tower 2 hot bulk material 1 from bottom to top (countercurrent principle).
  • the gas flow guides 13 can in principle run horizontally.
  • the gas flow guides 13 form according to the illustration of FIG. 1 with the horizontal an inclination angle ⁇ , so that the gas flow guides 13 to the main axis 3 of the cooling tower 2 to rise.
  • the inclination angle ⁇ may be determined as needed.
  • the inclination angle ⁇ is chosen so that it corresponds approximately to the bulk material angle a.
  • the angle of inclination ⁇ 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 are arranged exclusively on the underside of the gas flow guides 13.
  • 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 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 guides 13 preferably extend as far as the main axis 3 (or up to a "hub" 20 arranged in the region of the main axis 3 of the cooling tower 2).
  • 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 according to FIG. 3 preferably formed as endless conveyor 21.
  • the endless conveyor 21 has trough-like container 23.
  • the containers 23 have transversely to the conveying direction x seen in accordance with FIG. 4 a container cross section. Viewed in the conveying direction x, they have according to FIG. 3 a container length 1 on.
  • the endless conveyor 21 may be designed for this purpose as a so-called Wellkantgurt with transverse studs.
  • 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 that corresponds to FIG FIG. 4 adapted to the container cross-section.
  • sealing lips or the like may be arranged on the sides of the tunnel walls.
  • the tunnels 22 furthermore each have, in the conveying direction x, a tunnel length L which is greater than the container length 1.
  • the tunnel length L is even at least twice as large as the container length 1, for example about 2.5 times to about 3.5 times as large.
  • the present invention has many advantages.
  • the cooling of the hot bulk material 1 in the cooling tower 2 is possible with a superior efficiency.
  • the cooling device according to the invention has only a few mechanical components. It is therefore cheaper to purchase and to maintain 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.

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  • 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)
EP11728831.6A 2010-07-13 2011-06-29 Kühlvorrichtung für heisses schüttgut Active EP2593740B1 (de)

Priority Applications (2)

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

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 (de) 2010-07-13 2011-06-29 Kühlvorrichtung für heisses schüttgut

Publications (2)

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

Family

ID=44486896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11728831.6A Active EP2593740B1 (de) 2010-07-13 2011-06-29 Kühlvorrichtung für heisses schüttgut

Country Status (12)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980515A1 (en) * 2014-07-28 2016-02-03 Paul Wurth S.A. Sinter cooler

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102004054417B4 (de) * 2004-11-11 2014-02-20 Khd Humboldt Wedag Gmbh Verfahren zur Regelung des Betriebes eines Schüttgutrostkühlers
CN201104092Y (zh) * 2007-08-28 2008-08-20 高家忠 内置式煤基海绵铁竖炉
US7887030B2 (en) * 2008-05-19 2011-02-15 Spx Cooling Technologies, Inc. Wet/dry cooling tower and method
DE102008031219B3 (de) * 2008-07-03 2009-06-25 Gea Energietechnik Gmbh Hybridkühlturm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980515A1 (en) * 2014-07-28 2016-02-03 Paul Wurth S.A. Sinter cooler
WO2016016106A1 (en) * 2014-07-28 2016-02-04 Paul Wurth S.A. Sinter cooler

Also Published As

Publication number Publication date
RU2555287C2 (ru) 2015-07-10
RU2013105849A (ru) 2014-08-20
UA106666C2 (uk) 2014-09-25
WO2012007277A1 (de) 2012-01-19
ES2516915T3 (es) 2014-10-31
BR112013000772A2 (pt) 2016-05-24
EP2593740A1 (de) 2013-05-22
AR082162A1 (es) 2012-11-14
TWI496893B (zh) 2015-08-21
HRP20141015T1 (hr) 2015-02-13
PL2593740T3 (pl) 2015-03-31
AT510203A1 (de) 2012-02-15
KR20130039333A (ko) 2013-04-19
AT510203B1 (de) 2012-05-15
BR112013000772B1 (pt) 2020-06-23
TW201211273A (en) 2012-03-16
KR101618246B1 (ko) 2016-05-18

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