EP3418661A1 - Dispositif d'entrée pour produit en vrac - Google Patents

Dispositif d'entrée pour produit en vrac Download PDF

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Publication number
EP3418661A1
EP3418661A1 EP17177598.4A EP17177598A EP3418661A1 EP 3418661 A1 EP3418661 A1 EP 3418661A1 EP 17177598 A EP17177598 A EP 17177598A EP 3418661 A1 EP3418661 A1 EP 3418661A1
Authority
EP
European Patent Office
Prior art keywords
bulk material
bunker
cooling
shaft
input 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.)
Withdrawn
Application number
EP17177598.4A
Other languages
German (de)
English (en)
Inventor
Markus KASTNER
Franz Berner
Michaela Boeberl
Edmund Fehringer
Johann Wurm
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
Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP17177598.4A priority Critical patent/EP3418661A1/fr
Priority to CN201780081582.2A priority patent/CN110678711B/zh
Priority to KR1020197018675A priority patent/KR102389265B1/ko
Priority to RU2019119849A priority patent/RU2762953C2/ru
Priority to JP2019535806A priority patent/JP6854899B2/ja
Priority to PL17889512T priority patent/PL3563108T3/pl
Priority to PCT/CN2017/119855 priority patent/WO2018121733A1/fr
Priority to EP17889512.4A priority patent/EP3563108B1/fr
Priority to UAA201907182A priority patent/UA125441C2/uk
Publication of EP3418661A1 publication Critical patent/EP3418661A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/24—Cooling arrangements
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F27D2003/0007—Circular distribution
    • 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
    • F27D2015/0293—Cooling in a vertical, e.g. annular, shaft including rotating parts

Definitions

  • the application relates to an input device for inputting bulk material from particles having different particle sizes into a container, and to a method for inputting bulk material into a container, and to a device for cooling bulk material, comprising such an input device and a shaft cooler with cooling shaft.
  • Hot bulk material such as sintered iron ore from a sintering plant, generally needs to be cooled before it can be stored in a silo and / or further processed.
  • the bulk material in the cooling shaft should be distributed as homogeneously as possible in terms of particle sizes - ie, as far as possible without segregation in the case of a bulk material with different particle sizes.
  • Inhomogeneous distribution of particle sizes in the cooling shaft lead to different high flow resistance of the cooling gas and thus to areas that flow through less and thus less cooled than others.
  • large particles cool down more slowly than small particles because their surface-to-volume ratio is less favorable.
  • the bulk material contained in the cooling shaft has areas in which a concentration of large particles is above average, the bulk material cools down more slowly in these areas than in areas with average or below-average concentration of large particles. So that the bulk material can cool evenly in the cooling shaft, it is thus advantageous if the bulk material grains are spatially homogeneously distributed in terms of their size in the cooling shaft.
  • the container is preferably a cooling shaft of a shaft cooler.
  • the shaft cooler has at least one cooling shaft.
  • the shaft cooler or its cooling shaft usually has a vertical longitudinal axis.
  • the bulk material is preferably hot, that is, has a temperature of at least 300 ° C, preferably at least 400 ° C, preferably it is hot sinter.
  • the temperature of the bulk material is lowered in the shaft cooler by heat exchange in countercurrent with a cooling gas, the bulk material is so hot when entering the pit cooler.
  • sintering may have a temperature in the range of 400-700 ° C when inputting.
  • the bulk material consists of particles of different particle sizes; it can, for example, in sintering, a very large grain size act with particle sizes up to 200 mm.
  • the bunker is rotatable about a central axis of rotation, which is usually perpendicular to the installation of the input device to a container, such as a cooling shaft of a shaft cooler.
  • a container such as a cooling shaft of a shaft cooler.
  • the axis of rotation passes through the inlet of the rotary bunker for the bulk material.
  • the inlet of the rotary bunker for the bulk material is centrally located, so centric, arranged - the central axis of rotation then passes through this central centrally arranged inlet.
  • Through the inlet transported bulk material by means of a transport device to the input device - in the case of sintered bulk material, for example, with a plate belt - entered into the bunker.
  • the bunker has an eccentrically arranged spout.
  • the eccentric outlet of the rotary bunker opens into a stationary bunker, which is positioned adjacent to the bunker.
  • To use gravity to move the bulk material it is preferable to align the input device with the bunker overlying the bunker.
  • the rotary bunker When installing the input device to a container, for example, on the cooling shaft of a shaft cooler, the rotary bunker is positioned above the hopper bunker, so that the bulk of the gravity of the following progresses from the bunker in the hopper bunker.
  • the central axis of rotation of the bunker does not pass through the eccentrically arranged outlet.
  • the eccentric outlet of the rotary bunker for example, be an eccentrically arranged hole in the bottom of the bunker.
  • the supply bunker is so called because in it the bulk material for subsequent entry into the container, for example a cooling shaft of a shaft cooler, is presented through the drainpipes.
  • the bunker is stationary, unlike the bunker, it is not moved during operation of the input device.
  • drain pipes go out, at least three.
  • the drainpipes are tubes through which the bulk material leaves the supply hopper following gravity, it runs out of it.
  • the end of the drainpipes connected to the feed hopper may be called the feed end, the other end of the drainpipes may be called the chute end.
  • the cross section of the drainpipe is larger with increasing distance from the hopper bunker, so they expand with increasing distance from the hopper bunker. This reduces the risk of clogging.
  • conical tubes are connected as drainpipes with the narrower end, the leading end, with the template bunker. Through an opening in the bottom of the storage bunker, the bulk material, following gravity, runs in each case into the drainage pipe provided at the corresponding point on the floor.
  • the drainpipes are arranged at the bottom of the storage bunker, that in the case of clogging a drain pipe, the bulk material present over it can at least largely run through another drain pipe.
  • the downcomers will extend into the chiller cooler shaft at their lower, possibly wider, end, and material will seep out of, possibly wider, end of the downcomer tubes during operation, such as conical tubes, if desired - into the cooling shaft of the shaft cooler.
  • the bulk material will, according to gravity, run out of the hopper through the drainpipes into the cooling shaft.
  • the material bed of bulk material thus constructed in the cooling shaft is flowed through by cooling gas - preferably cooling air - in countercurrent.
  • the drainpipes are filled from the hopper bunker with bulk material of approximately the same particle size distribution, when the bulk material from the hopper runs into the drainpipes - which ultimately minimizes inhomogeneous particle size distribution in the container, such as a cooling shaft of a shaft cooler, especially in the circumferential direction.
  • the drainage of the bulk material is favored by possibly increasing cross-sectional area of the drainpipes.
  • bulk cones are formed at the lower end of the discharge tubes; in the Compared to the use of a single drain pipe, for example, a central input of bulk material in the container, for example, cooling shaft - the cones are less high in the presence of multiple drainpipes. As a result, the segregation in the radial direction around the respective cones decreases compared to higher cones. At least three drainpipes should be present for a usable effect compared to a single drainpipe.
  • the inventive features of the input device in combination in operation synergistically lead to the fact that even with delivery of segregated bulk material to the inlet of the input device - for example, segregation effects take place on a sinter-supplying plate conveyor - in the container - for example, a cooling shaft of a shaft cooler associated with the input device - both radially as circumferentially substantially homogeneous, and with respect to the longitudinal axis of the container - for example, cooling shaft of a shaft cooler - rotationally symmetric, particle size distribution of the bulk material is present. Segregation effects are made uniform over the cross section of the material bed formed by the bulk material in the container, for example cooling shaft. As effects result when used in a device for cooling bulk material improved cooling efficiency, uniform and effective cooling of the bulk material and a good heat yield for subsequent use of the heated cooling gas.
  • a further subject of the present application is a device for cooling bulk material from particles with different particle sizes, full a shaft cooler with cooling shaft, and an input device according to the invention for the input of bulk material into a shaft cooler, wherein the input device is arranged at the upper end of the cooling shaft of the shaft cooler, wherein the drain pipes open with their lower ends in the cooling shaft, and the rotary bunker and the supply bunker are arranged outside of the cooling shaft.
  • the cooling shaft hot bulk material is cooled by cooling gas passed through in countercurrent to the bulk material.
  • the rotary bunker and the supply bunker are outside the cooling shaft and are thus not exposed to the heated cooling gas present in the cooling shaft, especially at the upper end.
  • heat is supplied to the rotary hopper and the hopper bunker through the hot bulk material, but they are also cooled by ambient air.
  • the stationary components drain pipes open with their lower end - the shaft end - in the cooling shaft; From them, the bulk material pours into the cooling shaft.
  • the inventive device for cooling bulk material or the input device according to the invention are preferably operated continuously, that is, bulk material is continuously input.
  • the cooling shaft is preferably designed at least partially axially symmetrical. It preferably comprises a hollow cylindrical shaft section. Whereby expediently the cylinder axis of the hollow cylindrical shaft section is vertically aligned.
  • the cooling shaft is an air-cooled heat exchanger.
  • the device for cooling bulk material comprises at least one fan, in particular a fan, for injecting cooling gas, for example Cooling air, in the cooling shaft.
  • the device for cooling bulk material may have at least one pump for sucking cooling air out of the cooling shaft at its upper end.
  • Another object of the present invention is a method for, preferably continuous, input of bulk material from particles having different particle sizes in a container, preferably in a cooling shaft of a shaft cooler, wherein the bulk material is first centrally entered into a rotating bunker rotating about a central axis of rotation, then eccentrically pours out of the bunker into a stationary bunker, and then from the stationary supply bunker through stationary drain pipes into the container, preferably the cooling shaft of the shaft cooler, pours.
  • the central axis of rotation is preferably vertical.
  • FIG. 1 shows in longitudinal section an inventive input device 1 for the input of bulk material 2 in a cooling shaft 3 of a shaft cooler 4.
  • the input device 1 is part of a device for cooling 5 of bulk material.
  • the input device 1 is arranged at the upper end of the cooling shaft 3.
  • Bulk material 2 in this case hot sinter with different particle sizes, is introduced via a transport device - in this case a plate belt 6, but it could also be any other type of transport device suitable for transporting hot sinter - and fed through a centrally central inlet 7 into the rotary bunker 8 ,
  • the bunker is rotatable about a vertical, dashed central axis of rotation 9 - indicated by two curved arrows.
  • the central axis of rotation coincides in the example shown with the longitudinal axis of the cooling shaft 3 and the shaft cooler 4, and passes through the inlet 7.
  • the bulk material 2 pours into the stationary storage bunker 11.
  • In the bunker 8 is a contour of the present in operation material pad of bulk material indicated; descend towards the outlet 10.
  • From the supply bunker 11 go out three stationary drain pipes 12a, 12b, 12c. These are conical tubes whose wider end - the shaft end - opens into the cooling shaft 3. At their narrower end - the leading end - they are connected to the bunker 11.
  • the shaft cooler 4 comprises, in addition to the cooling shaft 3, a fan 13 for blowing in cooling air, supply lines 14 for cooling air, discharge lines 15 for heated cooling air.
  • Cooling air - represented by a transparent block arrow - is introduced into the bottom of the cooling shaft 3, flows through the material bed 16 of bulk material in the cooling shaft in countercurrent, and at the upper end of the cooling shaft 3 as heated cooling air - represented by a filled block arrow - dissipated.
  • Rotary bunker 8 and bunker 11 are arranged outside of the cooling shaft 3.
  • the material bed 16 builds up in the cooling shaft 3, because the bulk material 2 pours from the stationary supply bunker 11 through the discharge tubes 12a, 12b, 12c in the cooling shaft 3.
  • the contour of the material bed 16 is indicated in the cooling shaft 3.
  • the bulk material 2 passes through the cooling shaft 3 in the material bed 16 of gravity following from top to bottom. At the lower end of the cooling shaft 3, the cooled bulk material is discharged.
  • discharge devices for discharging the cooled bulk material from the cooling shaft was for better clarity in FIG. 1 waived.
  • FIG. 2 shows in section in an oblique view enlarges the combination of bunker 8, hopper bunker 11 and drain pipes 12a, 12b, 12c in an input device 1 according to the invention FIG. 1 .
  • the bunker 8 is rotatable about the vertical central axis of rotation 9, indicated by a curved arrow. Its inlet 7 is centrally located centrally, its outlet 10 is arranged eccentrically. The central axis of rotation 9 passes through the inlet 7. Under the rotary bunker 8, the stationary supply bunker 11 is arranged. From the supply bunker 11, the three stationary discharge tubes 12a, 12b, 12c exit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP17177598.4A 2016-12-29 2017-06-23 Dispositif d'entrée pour produit en vrac Withdrawn EP3418661A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP17177598.4A EP3418661A1 (fr) 2017-06-23 2017-06-23 Dispositif d'entrée pour produit en vrac
CN201780081582.2A CN110678711B (zh) 2016-12-29 2017-12-29 松散材料的冷却
KR1020197018675A KR102389265B1 (ko) 2016-12-29 2017-12-29 벌크 재료의 냉각
RU2019119849A RU2762953C2 (ru) 2016-12-29 2017-12-29 Охлаждение сыпучего материала
JP2019535806A JP6854899B2 (ja) 2016-12-29 2017-12-29 バルク材料の冷却
PL17889512T PL3563108T3 (pl) 2016-12-29 2017-12-29 Urządzenie zawierające chłodnicę szybową i urządzenie wejściowe, oraz sposób chłodzenia gorącego spieku
PCT/CN2017/119855 WO2018121733A1 (fr) 2016-12-29 2017-12-29 Refroidissement de matériau en vrac
EP17889512.4A EP3563108B1 (fr) 2016-12-29 2017-12-29 Dispositif, comprenant un refroidisseur à colonne et un dispositif d'entrée, et procédé de refroidissement d'aggloméré chaud
UAA201907182A UA125441C2 (uk) 2016-12-29 2017-12-29 Охолодження сипкого матеріалу

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177598.4A EP3418661A1 (fr) 2017-06-23 2017-06-23 Dispositif d'entrée pour produit en vrac

Publications (1)

Publication Number Publication Date
EP3418661A1 true EP3418661A1 (fr) 2018-12-26

Family

ID=59276504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17177598.4A Withdrawn EP3418661A1 (fr) 2016-12-29 2017-06-23 Dispositif d'entrée pour produit en vrac

Country Status (1)

Country Link
EP (1) EP3418661A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114322390A (zh) * 2021-12-16 2022-04-12 五峰正浩工贸有限公司 生物质燃料分料摊凉降温舱及其使用方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2074139A (en) * 1980-04-18 1981-10-28 Petroleo Brasileiro Sa Apparatus for granulometric distribution of solid particles
CN101576351A (zh) * 2009-06-23 2009-11-11 河北理工大学 一种可高效回收烧结矿显热的立式烧结矿冷却机
CN103234361B (zh) 2013-04-15 2015-07-15 中信重工机械股份有限公司 一种烧结矿冷却炉
CN204495075U (zh) 2015-03-15 2015-07-22 韩建淮 具有导流功能的竖式冷却器
CN204630395U (zh) 2015-05-11 2015-09-09 中冶长天国际工程有限责任公司 一种风箱及球团式环冷机
CN204630396U (zh) 2015-05-11 2015-09-09 中冶长天国际工程有限责任公司 一种冷却料仓及球团式环冷机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2074139A (en) * 1980-04-18 1981-10-28 Petroleo Brasileiro Sa Apparatus for granulometric distribution of solid particles
CN101576351A (zh) * 2009-06-23 2009-11-11 河北理工大学 一种可高效回收烧结矿显热的立式烧结矿冷却机
CN103234361B (zh) 2013-04-15 2015-07-15 中信重工机械股份有限公司 一种烧结矿冷却炉
CN204495075U (zh) 2015-03-15 2015-07-22 韩建淮 具有导流功能的竖式冷却器
CN204630395U (zh) 2015-05-11 2015-09-09 中冶长天国际工程有限责任公司 一种风箱及球团式环冷机
CN204630396U (zh) 2015-05-11 2015-09-09 中冶长天国际工程有限责任公司 一种冷却料仓及球团式环冷机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114322390A (zh) * 2021-12-16 2022-04-12 五峰正浩工贸有限公司 生物质燃料分料摊凉降温舱及其使用方法

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