WO2004063397A1 - Dispositif de chargement controle d'une cuve de reacteur, utilisation et procede correspondants - Google Patents

Dispositif de chargement controle d'une cuve de reacteur, utilisation et procede correspondants Download PDF

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Publication number
WO2004063397A1
WO2004063397A1 PCT/EP2004/000132 EP2004000132W WO2004063397A1 WO 2004063397 A1 WO2004063397 A1 WO 2004063397A1 EP 2004000132 W EP2004000132 W EP 2004000132W WO 2004063397 A1 WO2004063397 A1 WO 2004063397A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotation
chute
axis
bulk material
angle
Prior art date
Application number
PCT/EP2004/000132
Other languages
German (de)
English (en)
Inventor
Michael George Eden
Jeremy Fletcher
Johann Wurm
Ian Craig
Kurt Wieder
Original Assignee
Voest-Alpine Industrieanlagenbau Gmbh & Co
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 Voest-Alpine Industrieanlagenbau Gmbh & Co filed Critical Voest-Alpine Industrieanlagenbau Gmbh & Co
Publication of WO2004063397A1 publication Critical patent/WO2004063397A1/fr

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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • 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
    • F27B1/20—Arrangements of devices for charging
    • 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
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • 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

Definitions

  • the invention relates to a method and a device for the controlled feeding of a reactor vessel of chemical and / or physical process engineering, in particular metallurgy, with a lumpy feedstock, which can be used to control the conveyance of a substantially vertical, in particular stationary, axis of rotation Bulk material and a chute that is also rotatable about the axis of rotation and adjoins the conveying means and that is angle-adjustable with respect to the vertical, for targeted discharge of the bulk material, the chute being defined by a lateral surface arranged along its geometric axis, and its uses.
  • Feeding devices for shaft furnaces are known from the prior art, for example from publication DE2065460A1, which have a chute that is adjustable in angle via a shaft.
  • This configuration of a charging device which is used primarily in blast furnaces, is arranged in the interior of the shaft furnace, in particular in the upper part of the reactor space.
  • this configuration of a loading device can be used in all, in particular metallurgical, shaft furnaces or all reactors in physical and / or chemical process engineering. Due to the angle adjustment of the chute, a largely accurate charging of the reactor bed can be achieved.
  • the loading devices known from the prior art are further characterized by a not inconsiderable space requirement. Thus, a noteworthy portion of the reactor space is used by the charging device and reduces that available for the actual function of the reactor. standing primary reactor room.
  • the invention has for its object to develop a device according to the preamble of claim 1 and a method according to the preamble of claim 17, by means of which a more cost-effective controlled loading of a reactor or a more cost-effective operation of a reactor is possible.
  • BESTATIGUNGSKOPIE The object is achieved according to the inventive device according to the characterizing part of claim 1 and according to the inventive method according to the characterizing part of claim 17.
  • the charging device can be accommodated at least partially in the feed line of the feed material.
  • the chute has a certain minimum length necessary for the bundling and / or acceleration of the feedstock, and on the other hand, only a minimum amount of reactor space is used.
  • the construction according to the invention can above all minimize the space requirement of the charging device in the vertical direction and thus the distance of the charging device from the lower limit of the reactor can be increased. Since high temperatures tend to be expected in the lower area of the reactor in thermal processes, maximizing the distance of the charging device from this area ensures a minimization of the thermal and or thermomechanical stress on the charging device.
  • the particularly compact design of the charging device makes it possible to mount it in thermally low-stressed but confined areas of the reactor, as a result of which a longer service life can be achieved.
  • the presented charging device according to the invention is particularly easy to handle due to its compact design, whereby the downtimes can be reduced, in particular during removal and / or installation.
  • the device for unifying the bulk material flow also serves to reduce the cross section of the material flow of the feed material.
  • the, in particular funnel-shaped, device for unifying the bulk material flow serves above all to interrupt the path of the feed material, which results from the discharge movement of a suitable conveyor system, for example a screw conveyor. Due to the baffle surface of the device for standardization, which is inclined with respect to the vertical, the feed material is deflected or braked and thus leaves the throw path predetermined by the conveyor system. This can prevent the feed material from being loaded directly onto the reactor bed without being braked along its characteristic path predetermined by the conveyor system.
  • the device serves for the purpose of bundling and or redirecting the bulk material flow.
  • the device for standardization is designed as a temporary collecting container and / or as a collecting line.
  • the device for unification has a backflow behavior and thus serves to even out the material flow.
  • the device for standardization has a protruding, in particular funnel-shaped, receiving part for receiving the dropped bulk material and a narrowing manifold for forwarding the bulk material.
  • the device for unification is produced from a correspondingly reinforced sheet metal part.
  • the device for standardization makes the material flow more uniform and / or more compact. This particularly efficiently supports the effect of the chute as an adjustable organ for the targeted distribution of the feed material.
  • the feed is collected by the conveying means and guided to a drop point at which the feed of the angle-adjustable chute is dropped.
  • the charging device presented is particularly suitable for loading reactors in metallurgical technology, in particular a shaft furnace and / or blast furnace and / or melter gasifier.
  • the device presented serves for the distribution of bulk material by means of gravity.
  • the defined task cross-section corresponds to the cross-section of the bulk material flow in the region of the transfer of the bulk material from the conveying means into the angle-adjustable chute and, according to a particular embodiment, is essentially determined by the design and structural design of the conveying means.
  • the horizontal expansion of the bulk material flow is determined by the conveying means and therefore a defined feed cross-section is specified.
  • the specification of the feed conveyor cross-section itself can be done through a variety of constructive solutions of the funding. In this regard, closed and / or at least partially open versions of the funding are conceivable.
  • the distance z corresponds to at least half the diameter of the feed conveyor cross section.
  • the distance z is at least 1 times or 1.5 times the diameter of the defined feed conveyor cross section.
  • the conveying means is provided with a device for unifying the bulk material flow, with a baffle inclined at an angle of less than 180 ° to the vertical.
  • the baffle surface is inclined at 90 ° with respect to the vertical, that is to say it is aligned horizontally, as a result of which a material cushion can form on the baffle plate.
  • the device for standardizing the flow of bulk material and / or the conveying means is / are connected to the chute and a drive device is provided, by means of which the parts connected to one another can be rotated together about the axis of rotation.
  • the impact surface has an angle of inclination of at least 20 ° with respect to the vertical.
  • the baffle surface at least partially has the shape of a funnel that unifies the material flow.
  • the baffle is provided as part of the funnel which unifies the material flow.
  • the funnel shape on the one hand ensures that the dropped bulk material is standardized and concentrated and can be fed to the subsequent conveying means.
  • an actuating device in particular an actuating rod, is provided in the region of the axis of rotation for actuating the angle-adjustable part of the chute.
  • the actuating device is designed as an actuating rod and is the rotatable one
  • the actuating rod is arranged in the region of the axis of rotation in such a way that the actuating rod can essentially rotate in a fixed position.
  • a rope and / or a chain and / or lever is used as the actuating device.
  • the chute has a pivot point at which the actuating device engages, as a result of which the inclination of the chute relative to the reactor axis can be adjusted via the movement of the actuating device, in particular via the translation of the actuating rod, preferably along the axis of rotation.
  • the actuating device is designed as an actuating rod, and a rotary bearing is provided in the region of the axis of rotation, in which the actuating rod is rotatably mounted.
  • the actuating rod is arranged in the region of the axis of rotation and is essentially rotatably mounted in a stationary manner
  • the actuating device can be mounted in a pivot bearing in the region of the axis of rotation, in particular in the axis of rotation.
  • the pivot bearing is arranged above the chute, in particular in the area of the unit for unifying.
  • an actuating device in particular a drive or a hydraulic and / or pneumatic cylinder, is provided, by means of which the actuating device can be moved, in particular in the direction along the axis of rotation.
  • the drive can be, for example, an electrical actuating device, for example a worm drive, by means of which an actuating lever can be actuated, for example, or which acts directly on the actuating device and moves it in the direction of the axis of rotation.
  • an actuating lever can be actuated, for example, or which acts directly on the actuating device and moves it in the direction of the axis of rotation.
  • one or more levers preferably a lever system consisting of at least two lever rods, are provided, by means of which the movement of the actuating device, for example the translation of the hydraulic cylinder, into one movement via one or more deflection points, in particular translation, the actuator is convertible.
  • the device for standardizing the bulk material flow and / or the conveying means and / or possibly the chute is arranged at least partially outside the reactor space, in particular in a nozzle on the reactor space.
  • Reactors in chemical and / or physical process engineering are often used to carry out thermal processes which generally require high temperatures. These temperatures, as they occur, for example, in a blast furnace or a smelting gasifier for the production of pig iron, represent a high thermal and thermomechanical load for the materials used inside the reactor.
  • bearings or moving machine elements can only be used to a limited extent or at high ambient temperatures very sensitive to use.
  • the present device according to the invention can be integrated in a correspondingly temperature-protected area at the upper end of a reactor, for example in the area of the upper limit of the reactor, due to the compactness of its construction and the resulting low space requirement, particularly in the vertical direction.
  • the charging device is at least partially integrated in the area of the dome and / or in a connection piece provided on the dome.
  • the charging device is at least partially protected from the aggressive ambient conditions, in particular from the high temperatures, inside the reactor and is therefore ready for use over a longer period of time even without complex and expensive maintenance work.
  • the inventive construction and arrangement of the charging device outside the primary reaction space ensures optimized and largely undisturbed operation of the respective reactor.
  • the charging device according to the invention is at least partially arranged in a particularly temperature-protected area of the reactor which is smaller in size than the reactor space, for example in a nozzle on the reactor, the decentralized arrangement of the chute according to the invention allows the charging angle to be increased.
  • the present invention is further characterized by a use according to claim 13.
  • the device for controlled loading is used for charging a carbon-containing feedstock, in particular a lumpy coal.
  • the present invention is further characterized by a use according to claim 15.
  • the charging device supplies the melting gasifier with the carbon-containing feed material via an opening arranged in the coupling area of the melting gasifier for supplying a carbon-containing feedstock, in particular a lumpy coal.
  • a melter gasifier is an aggregate for the production of pig iron and / or intermediate steel products, a fixed bed being formed in the reactor with the addition of pre-reduced iron ore, in particular sponge iron, and a carbon-containing feedstock, in particular lumpy coal, and the pre-reduced Iron ore, with the simultaneous generation of a CO and / or H 2 -containing reducing gas, is smelted to pig iron.
  • a melter gasifier has a lower part for collecting the molten pig iron and the slag, a middle part for receiving the fixed bed formed from the lumpy coal and an upper dome-shaped part for feeding in the coal, the DRI and any additives ,
  • oxygen and possibly dusts are blown in on the side of the melter gasifier.
  • the device for controlled loading is used to charge an insert containing ore, in particular an insert containing iron ore.
  • the invention is further characterized by a method according to claim 17.
  • the lumpy feedstock is set in rotation about the central axis of rotation upon and / or before it hits the angle-adjustable chute.
  • the center of gravity of the cross section of the bulk material flow defined by the conveying means on the chute in the area of the bulk material flow and at a normal position to the axis of rotation is at a normal distance z> 0, in particular at a distance that is at least half the diameter corresponds to the defined task cross-section, arranged from the central axis of rotation.
  • the bulk material flow is collected and / or standardized in a device for standardization before being introduced into the conveying means.
  • the bulk material is already set into a rotation about the central axis of rotation in the unit for standardization.
  • the bulk material flow meets a baffle surface or a material cushion to equalize the bulk material flow at the device for standardization.
  • FIG. 1 shows the central and decentralized arrangement of a rotary chute
  • Fig. 2 shows an embodiment of a loading device
  • Fig. 3 shows another embodiment of a loading device
  • Fig. 4 shows the use of the loading device in a device for producing pig iron and / or steel preliminary products
  • Fig. 5 is a schematic illustration of the operation of a loading device according to the invention
  • the loading device has two chutes 4 and 4 'which can be rotated about an axis of rotation 5. While the chute 4 (prior art) is arranged centrally in the connecting piece with respect to its point of application along the central axis of rotation 5, the chute 4 'is at a distance z from the axis of rotation 5 with respect to its point of application (auxiliary axis 6).
  • the maximum achievable charging angle is limited both in the prior art (chute 4) and in the device according to the invention (chute 4 ') by the structural conditions.
  • a significantly larger charging angle ⁇ ' can be achieved than the charging angle ⁇ (prior art).
  • the feed material can thus be charged closer to the outer boundary of the reactor space.
  • FIG. 2 shows two different views of a loading device according to a further embodiment of a loading device.
  • the loading device shown has a funnel-shaped device for standardization 7 with a baffle surface as well as an adjoining conveying means 8, and a movable, angle-adjustable chute 9.
  • the defined cross-section of the bulk material flow is determined by the expansion of the bulk material flow in the region of the transition of the conveying means into the chute.
  • the loading device also has an actuating rod 10 which is attached to the chute 9 on the one hand via a pivot point and a suitable device and on the other hand is connected to a lever 11 via a pivot bearing.
  • the lever 11 is connected via a shaft 15 mounted in a bearing 18 to a second lever 16 which can be actuated via a hydraulic cylinder 17.
  • the device for standardization 7, together with the conveying means 8 and the chute 9, is designed to be rotatable about the axis of rotation 12 via a suitable drive device (not shown).
  • a suitable rotary bearing 19 is provided for this purpose.
  • the charging device is arranged in a particularly protected section of the reactor, in particular in a nozzle 13 on the reactor 14.
  • FIG. 3 shows a further embodiment of a loading device. Compared to the embodiment shown in FIG. 2, the embodiment according to FIG. 3 differs in that the chute 9 'has been adjusted to the position shown by actuating the lever 11' and the actuating rod 10 '.
  • a melter gasifier 20 with a tap 21 for pig iron and / or slag is provided.
  • the melter gasifier 20 is loaded via a feed line 22 with iron ore, in particular pre-reduced iron ore (DRI), which is produced from iron ore 24 in a pre-reduction reactor 23 according to a particular embodiment.
  • the reducing gas 25 generated in the melter gasifier is used to supply the pre-reduction reactor 23.
  • the melter gasifier also has an opening 26 for supplying a carbon-containing feedstock, in particular a lumpy coal.
  • the charging device according to the invention is arranged in the opening 26 or at least partially in a connecting piece provided at the opening.
  • Fig. 5 the function of the loading device is shown schematically. It can be seen how the input material initially hits an area of the device for standardization 7 designed as a baffle plate 27 and reaches the conveying means 8 '. The bulk material then passes via the conveying means 8 'into the angle-adjustable chute 9', through which it is loaded precisely onto the locations of the reactor bed to be loaded.
  • a screw conveyor is provided above the chute as a conveyor system for conveying the feed material to the device for standardizing the bulk material flow.
  • a screw conveyor proves to be particularly advantageous in practice, since a particularly controlled way of conveying the feed material can be carried out with this device.
  • the chute attached below can be supplied in a particularly economical form with a controllable amount of feedstock continuously or discontinuously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chutes (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de charger de manière contrôlée une cuve de réacteur de la technologie des procédés industriels chimiques et/ou physiques, notamment de la technologie métallurgique, avec une charge en vrac. Ledit dispositif comprend un moyen d'acheminement (8) pouvant tourner autour d'un axe de rotation (12) sensiblement vertical, notamment fixe, pour assurer un guidage contrôlé du produit en vrac et une goulotte de déchargement (9) pouvant éventuellement tourner autour de l'axe de rotation (12), se raccordant au moyen d'acheminement (8) et à ajustement angulaire par rapport à la verticale, pour assurer un déchargement ciblé du produit en vrac. La goulotte (9) est définie par une surface extérieure disposée le long de son axe géométrique. L'invention concerne également les utilisations correspondantes. A cet effet, le moyen d'acheminement (8) présente dans la zone de chargement du produit en vrac au niveau de la goulotte, une section transversale d'acheminement de chargement définie, perpendiculaire à l'axe de rotation, pour délimiter le flux de produit en vrac lors du déchargement sur la goulotte. Entre le centre de gravité de la surface de la section transversale d'acheminement de chargement et l'axe de rotation (12), il est prévu un écart standard z > 0.
PCT/EP2004/000132 2003-01-14 2004-01-12 Dispositif de chargement controle d'une cuve de reacteur, utilisation et procede correspondants WO2004063397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA39/2003 2003-01-14
AT392003A AT412121B (de) 2003-01-14 2003-01-14 Vorrichtung zur kontrollierten beschickung eines reaktorgefässes

Publications (1)

Publication Number Publication Date
WO2004063397A1 true WO2004063397A1 (fr) 2004-07-29

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AT (1) AT412121B (fr)
WO (1) WO2004063397A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114480750A (zh) * 2021-12-31 2022-05-13 济南荣庆节能技术有限公司 能够实现小颗粒物料均匀布撒的方法及其布撒装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112708711A (zh) * 2019-10-25 2021-04-27 莱芜钢铁集团电子有限公司 高炉布料器溜槽的定位方法及***

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921831A (en) * 1973-10-12 1975-11-25 Ishikawajima Harima Heavy Ind Device for distributing raw materials into blast furnace
SU827549A1 (ru) * 1979-04-05 1981-05-07 Днепропетровский Завод Металлургическогооборудования Дзмо Распределитель шихты доменной печи
JPH0234710A (ja) * 1988-07-21 1990-02-05 Nippon Steel Corp 高炉原料装入装置のシュート駆動機構
US5799777A (en) * 1994-02-01 1998-09-01 Paul Wurth S.A. Device for the distribution of materials in bulk
WO2003050314A1 (fr) * 2001-12-13 2003-06-19 Paul Wurth S.A. Dispositif de chargement pourvu d'une goulotte rotative

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921831A (en) * 1973-10-12 1975-11-25 Ishikawajima Harima Heavy Ind Device for distributing raw materials into blast furnace
SU827549A1 (ru) * 1979-04-05 1981-05-07 Днепропетровский Завод Металлургическогооборудования Дзмо Распределитель шихты доменной печи
JPH0234710A (ja) * 1988-07-21 1990-02-05 Nippon Steel Corp 高炉原料装入装置のシュート駆動機構
US5799777A (en) * 1994-02-01 1998-09-01 Paul Wurth S.A. Device for the distribution of materials in bulk
WO2003050314A1 (fr) * 2001-12-13 2003-06-19 Paul Wurth S.A. Dispositif de chargement pourvu d'une goulotte rotative

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198208, Derwent World Patents Index; Class M24, AN 1982-15442E, XP002283592 *
PATENT ABSTRACTS OF JAPAN vol. 0141, no. 88 (C - 0710) 17 April 1990 (1990-04-17) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114480750A (zh) * 2021-12-31 2022-05-13 济南荣庆节能技术有限公司 能够实现小颗粒物料均匀布撒的方法及其布撒装置

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ATA392003A (de) 2004-02-15

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