EP3081655A1 - Limitation de la réduction d'émission de poussière pour un refroidisseur de matières en vrac chaudes - Google Patents

Limitation de la réduction d'émission de poussière pour un refroidisseur de matières en vrac chaudes Download PDF

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Publication number
EP3081655A1
EP3081655A1 EP15164044.8A EP15164044A EP3081655A1 EP 3081655 A1 EP3081655 A1 EP 3081655A1 EP 15164044 A EP15164044 A EP 15164044A EP 3081655 A1 EP3081655 A1 EP 3081655A1
Authority
EP
European Patent Office
Prior art keywords
wall
radiator
region
bulk material
cooler
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
EP15164044.8A
Other languages
German (de)
English (en)
Other versions
EP3081655B1 (fr
Inventor
Michaela Boeberl
Stephan Hattinger
Stefan Hoetzinger
Stefan List
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
Primetals Technologies Austria GmbH
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
Priority to EP15164044.8A priority Critical patent/EP3081655B1/fr
Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to PL15164044T priority patent/PL3081655T3/pl
Priority to KR1020177033383A priority patent/KR102416462B1/ko
Priority to RU2017134611A priority patent/RU2703760C2/ru
Priority to BR112017022151-9A priority patent/BR112017022151B1/pt
Priority to PCT/EP2016/056530 priority patent/WO2016165926A1/fr
Priority to US15/565,737 priority patent/US10563921B2/en
Priority to CN201680022503.6A priority patent/CN107429974B/zh
Priority to JP2017554308A priority patent/JP6591559B2/ja
Priority to UAA201709986A priority patent/UA120874C2/uk
Priority to TW105110887A priority patent/TWI684740B/zh
Priority to ARP160101054A priority patent/AR104303A1/es
Priority to CN201620321993.7U priority patent/CN205980814U/zh
Publication of EP3081655A1 publication Critical patent/EP3081655A1/fr
Application granted granted Critical
Publication of EP3081655B1 publication Critical patent/EP3081655B1/fr
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
    • 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
    • F27D15/0266—Cooling with means to convey the charge on an endless belt
    • 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
    • F27D15/0273—Cooling with means to convey the charge on a rotary hearth
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • 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 present invention relates to the field of metallurgical plants, specifically the iron industry for cooling hot bulk material.
  • the object of the present invention is to provide a device which on the one hand reduces the dust emissions and on the other hand enables maintenance measures on the radiator easily and in a short time.
  • the second region has a boundary consisting of a stationary first wall and a stationary second wall, and this boundary extends to at least a portion of the second area, preferably over the entire second area, wherein the first wall and the second wall are suspended from a support structure, and the first wall rests on the first radiator wall or from it is separated by a gap, and the second wall rests on the second radiator wall or is separated from it by a gap.
  • the resting on the first radiator wall or separated by a gap first wall, and resting on the second radiator wall or separated by a gap second wall prevent transport of - located on the grate surface - dust by the cooling gas or by external wind influence.
  • Under rest or separated by a gap in this context means that the movement of the radiator is not hindered by excessive friction between the walls and a possible gap should be made as small as possible - to prevent the escape of dust particles.
  • Due to the exit velocity of the cooling gas from the bulk material located on the grate surface particles are carried along by the cooling gas. Due to the dedusting at the feed point, a large part of the dust particles - which are smaller than 150 ⁇ m in size - are removed.
  • the cooler according to the invention was surprisingly found that dust particles are larger than 150 ⁇ m and which ascend through the cooling air for the most part again settle on the grate surface or on the bulk material thereon.
  • the first wall and the second wall prevent the entrained particles are not removed by external wind influence or the cooling gas.
  • external wind influence is a crosswind that acts on the radiator transversely to the direction of movement.
  • it can also act partially in the direction of movement and - due to the round shape of the cooler - remove the particles beyond the surface of the grate.
  • the height of the side walls depends on the exit velocity of the cooling gas from the bulk material.
  • the height of the boundary is the height which is measured from the upper edge of the bulk material to the upper edge of the first wall or second wall - preferably the first wall and the second wall are the same height - is measured.
  • the first wall and the second wall are arranged stationary and the cooler is designed to be movable. Movable means that it is a continuous promotion that can take place in a circle or even straight.
  • a support structure is provided at the first wall and the second wall are hung up. This support structure is designed so that a rapid disassembly of the boundary can take place, it does not need to be restored as shown in the prior art, the gas-tightness. The limitation greatly reduces the amount of diffusely emitted dust.
  • the boundary should extend over a partial area, preferably over the entire second area. In order to allow maintenance on the cooler without dismantling the boundary, the sum total is covered by the first cover, the third cover and the boundary between 80% and 95% of the grate area. To achieve the greatest effect for the reduction of dust emissions, the first cover, third cover and the boundary encompass the entire grate area.
  • annular cooler is that the boundary of a height which is measured between the upper edge of the bulk material and upper edge of the first wall or second wall of at least 1m, preferably 1.5m, more preferably 2.0m very particularly preferably 2.5m having.
  • the height between the top edge of the bulk material and the top edge of the first wall or second wall affects the result of reducing dust emissions.
  • the boundary should have a minimum height of 1m. This sets the desired effect that the dust particles settle back on the grate surface. At a distance of more than 2.5 m, no noticeably higher reduction of dust emissions is noticeable.
  • a variant provides that the boundary additionally has a perforated plate located between the first wall and the second wall.
  • the perforated plate is disposed between the first wall and the second wall so as to face the grate surface, preferably substantially parallel to the grate surface.
  • angular deviations of up to ⁇ 10 ° are meant.
  • the perforated plate further improves the reduction of dust emissions.
  • the perforated plate ensures that dust particles - which would be carried over the boundary - are retained and, on the other hand, that the existing cooling gas can emerge uniformly over the entire grate surface.
  • a perforated plate is a plate understood - for example, from a steel sheet - which holes, other cutouts or openings have that allow the cooling gas can flow through.
  • Another example of a perforated plate is a grate.
  • the perforated plate lies between the first wall and the second wall.
  • a further advantageous embodiment of the cooler is that the boundary consists of individual segments.
  • the radiator must be serviced at regular intervals. In this case, individual components of the radiator are changed.
  • the Boundary of several segments which are mounted by an easily detachable connection - such as a screw or bolt connection.
  • the individual segments each consist of a first wall and second wall corresponding to the segment size.
  • a segment may additionally have a perforated plate.
  • the respective segments of the boundary can either be lifted off as a whole after releasing the connection between the segment and the supporting structure, or the first wall and / or second wall and / or the perforated plate of the segment are removed.
  • the segments can have different sizes.
  • One possible variant is that the boundary consists of only two segments, a large segment that is removed only in exceptional cases and a smaller one which is removed for maintenance purposes. To minimize manufacturing effort, a preferred solution is to make all segments the same size.
  • One embodiment provides that a temperature-resistant seal is attached to the transition from the first cooler wall to the first wall and the transition from the second cooler wall to the second wall.
  • Such a temperature-resistant seal may for example consist of a fabric or be designed as a brush seal. Under temperature resistance is understood in this context, a temperature up to 600 ° C. These seals can be on the outside of the second wall and first wall - that is not the side facing the hot bulk material - and / or the inside - the bulk material facing side - be appropriate.
  • a further advantageous embodiment is that the perforated plate perforations of up to 70%, preferably up to 60%, most preferably of up to 50% of the total area - the perforated plate - has. It has been found that perforations in a range of 50% to 70% provide the best results in terms of reducing dust emissions and refrigerant gas leakage.
  • the perforated plate is made of expanded metal.
  • An expanded metal has excellent properties in terms of openings, strength and weight.
  • the dust emissions are reduced to a minimum and on the other hand, the cooling gas can emerge uniformly over the entire surface.
  • the lower weight has a positive effect on the supporting structure - as it can be designed for lower loads.
  • hot bulk material is iron ore sinter or manganese ore sinter.
  • the coolers according to the invention are frequently used for cooling iron ore sinter and manganese ore sinter.
  • the cooler is designed as an annular radiator.
  • An annular radiator can be made more compact to hold the same amount of bulk material. Another great advantage is that in an annular cooler almost the entire grate surface is loaded with bulk material and this can thus be cooled. For a straight cooler, the grate area moving from the point of removal to the point of loading is not loaded. Thus, only about half of the grate surface can always be used.
  • An annular radiator requires only half the grate area compared to a straight radiator - bulk material to be cooled for the same amount.
  • annular radiator provides that the individual segments have an angle of at least 10 ° and a maximum of 20 °.
  • the size is chosen so that maintenance of the annular radiator can be done and the limitation can be removed with reasonable effort and in a short time.
  • Fig. 1 shows a plan view of an annular radiator 1. It is theivitystelle 2 - which in the first area. 4 is - as well as the cover located above the first area 4 7 shown.
  • the first region 4 comprises a region which is characterized by the angle ⁇ 1 .
  • the first region 4 is followed by the second region 5 in the direction of rotation, which is shown by the arrow.
  • the second region 5 has no cover.
  • the annular radiator 1 has a grate surface 16 - which is bounded by a first radiator wall 10 and a second radiator wall 9 - which can accommodate hot bulk material.
  • the size of the second region 5 is represented by the angle ⁇ 2 .
  • a third area 6 lies between the other two areas 4 and 5, and in this third area 6 there is also the discharge point 3 and a third cover 8.
  • the size of the third area 6 is represented by the angle ⁇ 3 .
  • the first radiator wall 10 corresponds to a radiator inner wall and the second radiator wall 9 corresponds to a radiator outer wall.
  • Fig. 2 shows a side view of a straight line radiator 1. It is theIFFstelle 2 - which is located in the first region 4 - and the cover located above the first region 4 7 is shown.
  • the second region 5 follows the first region 4 in the direction of the movement direction, which is shown by the arrow.
  • the second region 5 has no cover.
  • the straight radiator 1 has a grate surface 16 - which is bounded by a first radiator wall 10 and a second radiator wall 9 - which can accommodate hot bulk material.
  • a third area 6 then follows the second area 5 and in this third area 6 there is also the discharge point 3 and a third cover 8.
  • FIG. 3 An embodiment according to the invention of the apparatus for reducing the dust emissions in an annular radiator is shown.
  • the hot bulk material 17 is located on the grate surface 16 which is bounded by the second cooler wall 9 and the first cooler wall 10.
  • On the second radiator wall 9 is located a second wall 11 and on the first radiator wall 10, a first wall 12.
  • cooling air 15 is blown by means of a fan box 14 through the hot bulk material 17.
  • the first wall 12 and the second wall 11 are fixed to a support structure 18. This is done so that the rotational movement of the annular radiator 1 by the weight of the first wall 12 and second wall 11 is not difficult and disassembly can be done quickly.
  • the disassembly of the second wall 11 and the first wall 12 is required for the maintenance of the annular radiator.
  • FIG. 4 an advantageous embodiment of an annular radiator according to the invention is shown.
  • This variant is different from Fig. 2 in that a perforated plate 19 is installed between the second wall 11 and the first wall 12.
  • a temperature-resistant seal 13, 13 a at the transition between the first radiator wall 10 and the first wall 12 and between the second radiator wall 9 and second wall 11 is arranged.
  • This seal 13, 13a will prevent dust particles from moving away from the radiator via this path.
  • the reference numbers not mentioned here were already in the FIG. 3 described.
  • FIG. 5 a further advantageous embodiment of the annular radiator according to the invention is shown. It is a plan view in which it can be seen that the first wall 12a and the second wall 11a consist of individual segments. The size of the individual segments are represented by the angle ⁇ - in this embodiment, all segments are the same size. These segments of the second wall 11a and the first wall 12a are each suspended on the support structure 18 - the support structure is shown in this figure only for one segment. Each segment consists of a first wall 12a, second wall 11a and, if present, a perforated plate. The perforated plate has not been shown in this figure for reasons of clarity. The reference numbers not mentioned here were already in the FIG. 1 described.
  • Fig. 6 shows a side view of an advantageous embodiment of a straight cooler according to the invention 1.
  • the first wall 12a-c on the first radiator wall 10 and the second wall 11a-c on the second radiator wall 9 is arranged.
  • the support structure 18 By means of the support structure 18, the first wall 12a-c and the second wall 11a-c suspended, also a perforated plate 19a-c is also attached.
  • the segmentation of the first wall 12a, 12b and 12c, the second wall 11a, 11b and 11c and the perforated plate 19a, 19b and 19c can be seen.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Coke Industry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP15164044.8A 2015-04-17 2015-04-17 Limitation de la réduction des émissions de poussière pour un refroidisseur de matières en vrac chaudes Active EP3081655B1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
PL15164044T PL3081655T3 (pl) 2015-04-17 2015-04-17 Ogranicznik dla zredukowania emisji pyłów dla chłodnicy do chłodzenia gorącego materiału sypkiego
EP15164044.8A EP3081655B1 (fr) 2015-04-17 2015-04-17 Limitation de la réduction des émissions de poussière pour un refroidisseur de matières en vrac chaudes
UAA201709986A UA120874C2 (uk) 2015-04-17 2016-03-24 Обмежувальний пристрій для зменшення виділення пилу в охолоджувальному пристрої для охолодження гарячого сипкого матеріалу
BR112017022151-9A BR112017022151B1 (pt) 2015-04-17 2016-03-24 Resfriador para arrefecimento de material quente a granel e utilização do resfriador
PCT/EP2016/056530 WO2016165926A1 (fr) 2015-04-17 2016-03-24 Dispositif de limitation destiné à réduire les émissions de poussières pour un refroidisseur servant à refroidir un produit en vrac chaud
US15/565,737 US10563921B2 (en) 2015-04-17 2016-03-24 Delimitation for reduction of the dust emissions for a cooler for cooling hot bulk material
KR1020177033383A KR102416462B1 (ko) 2015-04-17 2016-03-24 고온 벌크 물품들을 냉각시키기 위한 냉각기를 위해 분진 방출들을 감소시키기 위한 경계부
JP2017554308A JP6591559B2 (ja) 2015-04-17 2016-03-24 高温バルク材料を冷却するための冷却器のための粉塵排出の低減のための境界部
RU2017134611A RU2703760C2 (ru) 2015-04-17 2016-03-24 Уменьшающее пылевыделение ограждение охлаждающего устройства для охлаждения горячего сыпучего материала
CN201680022503.6A CN107429974B (zh) 2015-04-17 2016-03-24 用于降低用来冷却热粒状物料的冷却器的灰尘排放的限定部
TW105110887A TWI684740B (zh) 2015-04-17 2016-04-07 用於冷卻熱散裝材料的冷卻器及此種冷卻器之應用
ARP160101054A AR104303A1 (es) 2015-04-17 2016-04-18 Limitación para la reducción de las emisiones de polvo para un enfriador para enfriar material a granel caliente
CN201620321993.7U CN205980814U (zh) 2015-04-17 2016-04-18 用于降低用来冷却热粒状物料的冷却器的灰尘排放的限定部

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15164044.8A EP3081655B1 (fr) 2015-04-17 2015-04-17 Limitation de la réduction des émissions de poussière pour un refroidisseur de matières en vrac chaudes

Publications (2)

Publication Number Publication Date
EP3081655A1 true EP3081655A1 (fr) 2016-10-19
EP3081655B1 EP3081655B1 (fr) 2018-03-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15164044.8A Active EP3081655B1 (fr) 2015-04-17 2015-04-17 Limitation de la réduction des émissions de poussière pour un refroidisseur de matières en vrac chaudes

Country Status (12)

Country Link
US (1) US10563921B2 (fr)
EP (1) EP3081655B1 (fr)
JP (1) JP6591559B2 (fr)
KR (1) KR102416462B1 (fr)
CN (2) CN107429974B (fr)
AR (1) AR104303A1 (fr)
BR (1) BR112017022151B1 (fr)
PL (1) PL3081655T3 (fr)
RU (1) RU2703760C2 (fr)
TW (1) TWI684740B (fr)
UA (1) UA120874C2 (fr)
WO (1) WO2016165926A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3081655T3 (pl) * 2015-04-17 2018-09-28 Primetals Technologies Austria GmbH Ogranicznik dla zredukowania emisji pyłów dla chłodnicy do chłodzenia gorącego materiału sypkiego
WO2019223860A1 (fr) * 2018-05-23 2019-11-28 Festo Ag & Co. Kg Moyen de fonctionnement et unité de construction de soupape de processus
CN110118489A (zh) * 2019-03-22 2019-08-13 中冶东方工程技术有限公司 块料冷却装置

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CN202372014U (zh) * 2011-11-11 2012-08-08 中冶长天国际工程有限责任公司 烟气罩液密封装置及具有该烟气罩液密封装置的环冷机
JP2013002782A (ja) * 2011-06-21 2013-01-07 Mitsubishi-Hitachi Metals Machinery Inc 焼結設備及びその操業方法
CN203949515U (zh) * 2014-05-14 2014-11-19 武汉博诚机械工程有限公司 一种带余热回收的冷却机

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Publication number Priority date Publication date Assignee Title
EP0127215B1 (fr) 1983-05-21 1986-11-05 Metallgesellschaft Ag Dispositif annulaire pour mettre en contact des substances solides et des gaz
JP2013002782A (ja) * 2011-06-21 2013-01-07 Mitsubishi-Hitachi Metals Machinery Inc 焼結設備及びその操業方法
CN202372014U (zh) * 2011-11-11 2012-08-08 中冶长天国际工程有限责任公司 烟气罩液密封装置及具有该烟气罩液密封装置的环冷机
CN203949515U (zh) * 2014-05-14 2014-11-19 武汉博诚机械工程有限公司 一种带余热回收的冷却机

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US20180120030A1 (en) 2018-05-03
TWI684740B (zh) 2020-02-11
RU2017134611A3 (fr) 2019-08-14
RU2017134611A (ru) 2019-04-05
KR20170138524A (ko) 2017-12-15
KR102416462B1 (ko) 2022-07-01
US10563921B2 (en) 2020-02-18
JP6591559B2 (ja) 2019-10-16
UA120874C2 (uk) 2020-02-25
BR112017022151A2 (pt) 2018-07-03
RU2703760C2 (ru) 2019-10-22
AR104303A1 (es) 2017-07-12
TW201700937A (zh) 2017-01-01
CN205980814U (zh) 2017-02-22
JP2018514740A (ja) 2018-06-07
CN107429974B (zh) 2020-01-21
BR112017022151B1 (pt) 2021-08-17

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