[go: up one dir, main page]

EP1325160B1 - Procede et dispositif pour produire un lit fixe - Google Patents

Procede et dispositif pour produire un lit fixe Download PDF

Info

Publication number
EP1325160B1
EP1325160B1 EP01976153A EP01976153A EP1325160B1 EP 1325160 B1 EP1325160 B1 EP 1325160B1 EP 01976153 A EP01976153 A EP 01976153A EP 01976153 A EP01976153 A EP 01976153A EP 1325160 B1 EP1325160 B1 EP 1325160B1
Authority
EP
European Patent Office
Prior art keywords
bulk material
carbon
centring
containing constituents
fixed bed
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.)
Expired - Lifetime
Application number
EP01976153A
Other languages
German (de)
English (en)
Other versions
EP1325160A1 (fr
Inventor
Rainer-Walter Kastner
Reinhard Pum
Kurt Wieder
Johann Wurm
Hado Heckmann
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 and Co
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 and Co, Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH and Co
Publication of EP1325160A1 publication Critical patent/EP1325160A1/fr
Application granted granted Critical
Publication of EP1325160B1 publication Critical patent/EP1325160B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon
    • 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 specially adapted for furnaces of these types
    • F27B1/20—Arrangements of devices for charging

Definitions

  • the invention relates to a device and a method for producing a fixed bed in an aggregate of metallurgical technology, preferably for the production of pig iron or steel precursors of iron-containing feedstocks, especially in a melter gasifier, wherein a lumpy bulk material, which contains ore and carbonaceous ingredients, in particular prereduced, iron ore, preferably sponge iron, as well as, preferably particulate, contains carbon, is charged to a surface, and a, preferably uniform, mixing of the ore-containing and the carbonaceous constituent of the bulk material takes place.
  • the distribution of a lumpy bulk material on an extensive area is a problem known in the field of plant construction and in process engineering by experts.
  • great efforts are made to obtain an optimal for the respective process degree of distribution of the bulk material.
  • the incorrect loading of such a reactor can lead to a reduction in the quality of the product produced, excessive loss due to dust discharge, and to reduce the productivity of the entire system.
  • the material distribution is in particular an essential instrument for adjusting the gas distribution.
  • DE-C-19623246 describes in this regard an apparatus for the common central introduction of coal and sponge iron in a melter gasifier. Although a corresponding mixing of the substances is achieved, the central introduction of coal-sponge iron mixture for process-technical and economic reasons proves to be not advantageous.
  • JP 59153815 describes a device for introducing lumpy raw material into a furnace.
  • the disadvantage here is especially that different raw materials can be introduced only alternately or successively.
  • DE 478532 discloses a device for feeding a shaft furnace via vertically adjustable feeders.
  • the disadvantage is especially the necessary adjustment mechanism.
  • US 5,210,962 discloses a device for the entry of lumpy feedstock in a shaft reactor, with a piece size-dependent positioning of the feedstock is possible.
  • a disadvantage is that only one crop can be introduced at a time.
  • the present invention proves to be particularly advantageous when used in a melter gasifier, and is the most detailed documented in this regard.
  • the application of the invention is not limited to this embodiment, but the description of the processes in a melter gasifier is an exemplary explanation.
  • a melter gasifier as known from the prior art, is used for melting a largely prereduced iron ore (DRI), as well as the production of reducing gas, preferably coal.
  • DRI largely prereduced iron ore
  • the coal and the DRI are usually introduced into the same via the dome of the melter gasifier, wherein it has proven to be beneficial to introduce the coal centrally. Accordingly, the DRI is introduced into the melter gasifier via a plurality of decentrally located openings on the carburettor dome.
  • the invention is further characterized by a method for producing a fixed bed in a melter gasifier in which a particulate bulk material containing prereduced iron ore and carbonaceous constituents, preferably particulate coal, is charged onto a surface, the prereduced iron ore and the carbonaceous constituents being different Apertures are introduced into the melter gasifier, wherein the pre-reduced iron ore is charged by a plurality of decentralized openings, and wherein the carbonaceous constituents are charged centrally via a charging device, wherein the carbon-containing constituents by a means for radial distribution - as viewed from above - in radial, outwardly facing Direction are distributed, and wherein a, preferably uniform, mixing of the prereduced iron ore with the carbonaceous constituents is carried out, wherein the entire pre-reduced iron ore to a active peripheral region (edge region) of the fixed bed is charged, and the carbonaceous constituents are scattered on a means for scattering in the radial
  • the active peripheral region denotes that region of the fixed bed which has a uniform through-gasification sufficient for the production of pig iron or reduction gas.
  • a coarse fraction, in particular of the carbonaceous constituent, of the bulk material having a mean grain size greater than the mean grain size of the bulk material to be distributed, in particular the carbonaceous constituent is charged to the center of the surface, and produced in this way, preferably stationary, predefined grain size distribution.
  • the bulk material in particular the carbonaceous constituent of the bulk material, distributed via a charging device substantially rotationally symmetric to the surface, wherein on the center of the surface, by direct distribution less material than the average of the other points of the surface , between the center and the outer edge of the active peripheral region of the fixed bed, is applied.
  • the coarse-grained fraction, in particular of the carbonaceous constituent, of the bulk material, initially at a distance from the center is applied to the fixed bed in such a way that it is subsequently separated by indirect distribution, in particular segregation, on the center of the area, charged.
  • the particulate bulk material is charged via one or more stationary charging devices.
  • Charging can be direct or indirect.
  • direct charging is meant by definition that charging in which the bulk material in question during its introduction, in particular in a reactor or in a vessel, on a predetermined area of a surface, in particular on the center of a surface loaded.
  • indirect charging by definition, that charge is designated, in which the piece goods are indeed introduced by direct charging, but the resulting distribution on the surface is determined by further effects, in particular by segregation. In this way, it is possible to distribute and charge the bulk material in a specific area of the area, in particular on the center of the area, albeit indirectly by direct charging, or at least with little impact, for example by segregation, ie indirectly.
  • the expanded area is a gas-permeable, in particular actually gasified, area, process gas being guided in a targeted manner through this area.
  • a gasification is an essential feature of a corresponding method, for example, the gasification of the fixed bed of a shaft furnace or melter gasifier.
  • the center of the reaction bed is insufficiently perfumed during a loading according to the prior art.
  • the invention sets countermeasures that lead to a substantial improvement of the process.
  • melter gasifier is operated according to another method, wherein other feedstocks than it corresponds approximately to the blast furnace process, are used.
  • carbonaceous solid, in particular coal, and O 2 -containing gas are used as the energy carrier.
  • the coal is conveyed with one or more augers from a coal bunker and centrally fed, the coal thus falls in a narrow, concentrated beam through the gas space of the melter gasifier on the bed surface. It is also conceivable not to abandon the coal centrally but separated by several streams on the fixed bed.
  • the larger grain will move outward.
  • High local gas velocities up to fountain formation disturb the gas reactions in the gasification cupola and increase the dust discharge.
  • the volume of the active bed is thus reduced and the dead man in the center or in the hearth is mainly supplied with finer grain, which further worsens the drainage.
  • An object of the present invention is not to charge the coal to a point in the gasifier, but to deliberately scatter the coal, given its grain size, and in particular rotationally symmetrical, on the bed surface. It should also be noted that charcoal is charged into the center of the bed of lumpier coal than on the surrounding area, since this embodiment of the method proves to be particularly favorable.
  • This object is achieved by the uniform distribution of the carbon, or the carbon-enriched material of the bulk material, on the fixed bed, and thus by a more homogeneous mixing of the coal with the direct-reduced iron (DRI), in particular the area of the center
  • DRI direct-reduced iron
  • the mixing is carried out particularly efficiently in the case of a simultaneous and continuous charging of the lumpy coal and the prereduced iron ore, in particular the sponge iron, as in the loading of a melter gasifier.
  • less coal is applied by direct distribution to the center of the fixed bed, as is degraded over the dead man, so lowered the bed level and charged in this way lumpier coal by segregation, ie indirect distribution, to the center of the bed.
  • lumpier coal by segregation, ie indirect distribution, to the center of the bed.
  • the thus lower level, as well as the lumpier coal in the center of the fixed bed lead to a stronger medium fumigation, and thus to an increase in the active bed volume for the chemical or metallurgical processes of the melter gasifier.
  • the desired grain distribution at the bed of the melter gasifier can be realized not only by indirect but also by direct charging, whereby the particle size distribution over the fixed bed is targeted and directly influenced.
  • the particle size distribution over the fixed bed is targeted and directly influenced.
  • a stationary and stationary charging device Compared with the prior art, a stationary and stationary charging device according to the invention has various advantages:
  • a major advantage is the lower susceptibility of the device to mechanical and thermomechanical wear. Movable parts are only limited use at higher temperatures, as an adaptation requires a disproportionate effort.
  • moving devices generally require a drive, on the one hand in turn requires additional maintenance, and on the other hand to move a highly heat-resistant and robust, especially specially armored device, must also be dimensioned accordingly, and thus requires a lot of energy.
  • the scattering of the coal takes place by using a charging device in the falling coal jet, which ensures a substantially uniform, in particular rotationally symmetrical, charging over the Charbettober Assembly.
  • a charging device in the falling coal jet, which ensures a substantially uniform, in particular rotationally symmetrical, charging over the Charbettober Assembly.
  • the surface profile can be adjusted, whereby the gas and solid flow can be influenced in a fixed bed.
  • a charging device by dividing the bulk flow, are charged at several points.
  • the movable embodiment of a charging device according to the invention is conceivable, which targeted individual areas of the surface, in particular the fixed bed with, in particular presorted, bulk material are supplied.
  • a homogeneous material build-up on the charbett (bed of lumpy coal) is thereby ensured and thus in addition to the gas production and the slag and pig iron composition at the periphery (active bed area) evened out.
  • This homogenization brings about a more homogeneous slag guidance with improved drainage behavior. This in turn has a positive effect on the heat exchanger function in a fixed bed, as well as the pig iron quality.
  • the scattering of the coal on the bed surface reduces the formation of agglomerates, which disturb the flow of material in the gasifier, because there is no excessive accumulation of material, which is in the same pyrolysis stage.
  • the symmetrically uniformly distributed coal also has the advantage that it is homogeneously mixed with the DRI on the circumference. Uniform quantities of pig iron and slag and their almost constant composition on the circumference improve the metallurgical conditions in the plant
  • the coal in particular rotationally symmetric, distributed over a large area, wherein in the center of the carburetor no coal is charged.
  • the lumpy coal passes through segregation in the center and in the area of the dead man. This ensures that the dead man supplied with lumpy coal and thus the drainage is improved up to the tapping.
  • the gas flow and the outflow of the liquid phase can be influenced.
  • the conditions for the heat exchange in a fixed bed are improving, which reduces the energy requirement. Keeping away the gas flow from the wall protects the refractory lining.
  • the dead man By supplying the center of the fuselage gasifier fixed bed with coarse coal, the dead man is formed with a larger void volume, which makes it possible to transport heat enhanced by gas flow in this area and to give the liquid phase the opportunity to drain in this area and the disturbances above the Minimize gasification zone.
  • a homogenization of the gasification reduces the dust content in the process gas. This results in a lower dust load in the reduction shaft, a relief of the dust return and less sludge losses in the process.
  • the attachment of a charging device which divides the flow of bulk material into a plurality of sub-streams and thus charges lumped coal into the center or to another location predetermined by the method, in particular the melter gasifier, by direct or indirect distribution.
  • Combinations of charging devices that make use of direct and / or indirect distribution are further embodiments of the invention.
  • the invention is further characterized by a method according to the invention for distributing a particulate bulk material, in particular a lumpy coal, from a bulk material flow over an extensive area, in particular onto a fixed bed, this area preferably being located in a reactor or container of physical or chemical process engineering, in particular a reactor of a metallurgical plant for the production of pig iron or steel precursors, and the particulate bulk material is charged via a charging device, wherein it is distributed by a means for radial distribution - seen from above - in radial, outward-facing direction, further characterized the bulk material, before impinging on the means for Radialver?, on a means for scattering - seen from above - in the radial and tangential direction is scattered.
  • a particulate bulk material in particular a lumpy coal
  • the bulk material stream prior to the scattering of the bulk material, is centered in a, preferably first, step of the process by conveying the bulk material stream to a centering means and the bulk material through a number of centering openings of the centering agent flows, wherein an optionally occurring overflow of the bulk material flows through at least one means for discharging, in particular through a further opening.
  • the bulk material forms a bulk cone on the means for centering.
  • a coarse-grained portion of the bulk material which has an average grain size which is greater than the mean grain size of the entire distributed bulk material, to a predetermined area of the surface, in particular to a center of the Surface, charged, in this way a, preferably stationary, predefined grain size distribution is generated.
  • the grain size distribution is defined as the quantitative fraction of each grain fraction at one location, the total amount of grains at that location.
  • the existence of a grain size distribution approximately temporally approximately constant with respect to the respective location is defined. Furthermore, according to a further embodiment of the invention, the amount of grains of a fraction depending on the location of the surface in relation to the total amount of grains of the respective fraction of the surface, essentially, independent of time behavior.
  • the invention is further characterized by a device according to the invention for carrying out the method for producing a fixed bed in a melter gasifier according to one of claims 1 to 4 comprising a melter gasifier with a charging device which is centrally located, with a plurality of decentralized openings in the dome of the melter gasifier to the entry of Pre-reduced iron ore and the charging device for entry of the carbonaceous constituents of the bulk material, wherein the charging device comprises at least one means for radially distributing the bulk material in - viewed from above - radial, outwardly facing direction, further wherein the charging device before the means for radial distribution at least one , in the upper part of the reactor arranged, preferably fixed, means for scattering the bulk material, wherein at least a portion of the bulk material in - from the top - radial and tangential direction can be distributed u and the means for scattering the bulk material comprises a number of interconnected rod-shaped and / or planar elements, which together describe approximately the shape of
  • the bulk material is uniformly scattered in a first step, and distributed in a second step radially outward.
  • the radial distribution is characterized in that a certain surface part is shaded by the means for radial distribution and thus loaded with little bulk material.
  • a scattering cone known from the prior art causes not only a radial distribution, but also the shading of a predetermined area of a surface.
  • the means for radial distribution is designed as a fixed arranged below the means for scattering device.
  • convex and concave structures as well as substantially pyramidal body, and further combinations thereof are possible, as far as they cause the function of a radial distribution of the bulk material.
  • the optionally present rod-shaped part of the means for radial distribution also serves for fixing and positioning of the conical part.
  • the cone-shaped part causes a radial distribution of the bulk material by the bulk material from the lateral surface rebounds or slides along, and is thus subject to a specific distribution.
  • the part of the surface in particular the fixed bed surface, which is covered and shaded by the cone or, in the case of rebounding and sliding of the bulk material on the conical surface, by its extended imaginary lateral surface, loaded by direct distribution with less bulk than it corresponds to the average of the other part of the area.
  • the tapered part of the radial distribution means comprises at least one cone or truncated cone with an opening angle of the generatrix to the center line of less than 60 °, preferably in the range of 10-60 °.
  • the means for Radialver made of heat and wear resistant material and / or has so-called material padding on.
  • the cone or truncated cone has at its base a diameter of 50% of the diameter of the means for spreading or the task cross-section.
  • At least one means for centering the flow of bulk material is provided in front of the means for spreading.
  • the invention is characterized by a means for spreading, wherein the means for spreading comprises a number of interconnected rod-shaped and / or planar elements, which together approximate the shape of a counter to the direction of the bulk flow, tapered, in particular pyramidal, having a plurality of openings, Describe body.
  • the invention is characterized by a means for spreading, wherein the means for spreading comprises a number of rings, which together approximately the shape of one opposite to the direction of Schüttgutstromes tapered, in particular conical, having a plurality of openings, body, and are interconnected along at least one generatrix.
  • The, preferably bundled, bulk material flow is evenly, for example, on the Charbetts (bed of lumpy coal) of the melter gasifier, distributed or scattered.
  • the bulk material is subjected to scattering by, often repeated, deflection, wherein the special construction according to the invention achieves a significantly more uniform scattering of the bulk material than in the prior art.
  • a distribution of the bulk material wherein the bulk material in a plane normal to the direction of the bulk material flow, or - viewed from above - is distributed in the radial and tangential direction.
  • a scattering cone known in the art as in EP-A-0076472 on the other hand, the main effect is to distribute the bulk material in a radial direction within a narrow ring, viewed from above.
  • inventive means for spreading starting from the bulk material flow - seen from above - scatters not only radially outward, but also radially inwards. Due to the particular shape of the tapering, in particular pyramidal, body radial dispersion is effected according to the invention, although more material tends to be scattered outwards, in a larger radius, than inwards, into a small radius.
  • the means for spreading on a number of approximately annular bodies which describe approximately the shape of a counter to the direction of the bulk flow, the tapered, in particular conical, body.
  • the annular bodies are connected together along one or more generatrices.
  • the means for spreading must cover the entire cross section of the bulk material flow according to a further feature.
  • the openings on the means for spreading are at least as large as the maximum size of the material to be charged.
  • the rod, annular or planar elements are made according to an embodiment of the invention of wear and impact resistant, heat resistant materials, and / or preferably have a rectangular or triangular cross-section.
  • the invention is characterized by a means for centering a bulk material flow for use in a device according to claim 5, having at least one centering opening, wherein at least one means for discharging, preferably a further opening, is provided, whereby an optionally occurring during centering of the bulk material flow Overflow of bulk material is derivable.
  • the means for centering is designed as a centering, which has an annular metal plate with an inner and outer radius, from which at least a portion, in particular a circular segment or a circular ring sector has been removed.
  • the centering plate is designed such that was removed from the annular plate, a circular ring segment with a central angle of 180 °.
  • the centering in a charging device is used for concentration and centering of the bulk material flow or the bulk material itself, which is conveyed for example by screw conveyor from a bunker. Such a discharge always leads to a discharge curve that varies depending on the speed or capacity.
  • the centering plate is designed in such a way that it has at least one first opening, which aims the centering of the bulk material, and at least one means for discharging, preferably an opening for discharging an optionally occurring overflow.
  • a first opening which aims the centering of the bulk material
  • at least one means for discharging preferably an opening for discharging an optionally occurring overflow.
  • Such an overflow is formed when the first, bundling, opening according to the invention is misplaced or clogged.
  • this centering plate is designed such that at least one part, in particular at least one circular sector or circular segment has been removed from an annular metal sheet with an inner and outer radius.
  • Alternative embodiments have, for example, curved or funnel-shaped centering plates.
  • the centering opening of the Zentrierbleches presents in an annular formation, advantageously as the limited by the annulus centric opening of the sheet.
  • the other openings corresponding to the means for deriving may be provided so that they connect to the centering opening , and thus structurally indistinguishable from this. However, there is a functional separation, since these other openings serve to derive the overflow.
  • the centering of a charging device is arranged such that the conveying means, in particular said augers, the piece goods promotes the centering, and preferably does not load that part of the sheet, which means for discharging, for example, the additional additional openings for the flow of the material accumulates when laying the first centering opening on the centering.
  • a bulk cone forms on the centering plate in a particularly preferred manner, from which material flows through said first, centering, opening, and is centered in this way.
  • the embodiment of the centering plate according to the invention has at least one means for discharging the material in the event of an overflow.
  • the size of the bundling opening is according to one embodiment of the invention at least 6 to 10 times the maximum diameter of the conveyed bulk material.
  • the means of centering is also made of highly heat-resistant and highly wear-resistant materials.
  • a melter gasifier 1 the coal distribution in a melter gasifier 1 is schematically outlined.
  • the coal is introduced into the melter gasifier.
  • a DRI introduction 3 for example by means of a plurality of openings arranged concentrically with respect to the coal introduction, a dust return 4, an oxygen introduction 5, a slag and pig iron tap 15 and a gas discharge 6 are provided on the melter gasifier 1 .
  • the coal is evenly distributed over the rotationally symmetric bed 7 of the melter gasifier 1 , which is charged by the special design of the charging device 2 in the center no or at least little coal.
  • the distribution of the coal by direct introduction is shown schematically in FIG. 1 , wherein in particular a profile of the coal distribution 8 is sketched schematically. Accordingly, the mass flow per area in the region of half the radius is significantly higher than in the center of the bed.
  • FIG. 2 schematically shows a stationary charging device 2 according to the invention.
  • This charging device has a concentrating plate 10 , which serves to concentrate the bulk material flow, which in turn is conveyed by screw conveyors from a bunker.
  • this concentrating plate 10 is designed such that a symmetrical half part of an annular plate with respect to an outer diameter of the sheet was removed.
  • the concentrating plate has a bundling opening 11 , and an opening 12 for discharging the overflow.
  • a scattering means 13 in the case shown by a Kohleriffler, a special design of a deflector, evenly distributed in the free space, or on the surface of the Charbettes the melter gasifier.
  • the Kohleriffler 13 in this case has an approximately pyramidal shape, and thus allows a scattering of the bulk material.
  • a means for radial distribution 14 with a cone that prevents a charge of the center of the Charbettes or at least reduces the amount charged in this area of bulk material.
  • This cone can be attached to a cylindrical part, and in particular has an opening angle between the surface line and the center line of about 10-60 °. Particularly preferred is an opening angle of 30 ° to 45 °.
  • Such parts of the device shown here which experience has shown to be subject to a particular wear-related stress, are additionally protected by armor, for example by welding of highly wear-resistant metal sheets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (9)

  1. Procédé pour produire un lit fixe dans une unité de fusion-gazéification, dans lequel un matériau en morceaux en vrac, contenant du minerai de fer préréduit et des constituants contenant du carbone, de préférence du charbon en morceaux, est chargé sur une surface, le minerai de fer préréduit et les constituants contenant du carbone étant introduits dans l'unité de fusion-gazéification à travers différentes ouvertures, le minerai de fer préréduit étant chargé à travers une pluralité d'ouvertures excentrées et les constituants contenant du carbone étant chargés de manière centrale via un appareil de chargement, les constituants contenant du carbone étant répartis dans la direction radiale vers l'extérieur - en vue de dessus - par un moyen de répartition radiale et le minerai de fer préréduit étant mélangé, de préférence uniformément, aux constituants contenant du carbone, caractérisé en ce que la totalité du minerai de fer préréduit est chargée sur une région active circonférentielle (région périphérique) du lit fixe et en ce que les constituants contenant du carbone, avant d'entrer en contact avec le moyen de répartition radiale, sont dispersés au niveau d'un moyen de dispersion dans les directions radiale et tangentielle, en vue de dessus, et en ce qu'une fraction à gros grains des constituants contenant du carbone, présentant une taille de grains moyenne supérieure à la taille de grains moyenne des constituants contenant du carbone, est chargée sur le centre de la surface, produisant ainsi une répartition prédéfinie, de préférence stationnaire, de taille de grains.
  2. Procédé selon la revendication 1, caractérisé en ce que les constituants contenant du carbone sont répartis, via un appareil de chargement, d'une manière présentant sensiblement une symétrie de révolution sur la surface, la quantité de matériau appliquée au centre de la surface par répartition directe étant inférieure à la moyenne à d'autres endroits de la surface, entre le centre et le bord extérieur de la région active circonférentielle du lit fixe.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la fraction à gros grains des constituants contenant du carbone est pour le moment appliquée au lit fixe à une certaine distance du centre, le niveau du lit fixe chutant au centre, de telle manière qu'elle soit, en conséquence, automatiquement chargée sur le centre de la surface par répartition indirecte, en particulier par ségrégation.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que, avant la dispersion, le flux de matériau en vrac des constituants contenant du carbone est centré, du fait de son acheminement jusque sur un moyen de centrage et de l'écoulement du matériau en vrac à travers un certain nombre d'ouvertures de centrage du moyen de centrage, tout trop-plein de matériau en vrac pouvant survenir s'échappant par au moins un moyen d'évacuation, en particulier par une ouverture supplémentaire.
  5. Appareil pour la mise en oeuvre du procédé de production d'un lit fixe dans une unité de fusion-gazéification selon l'une des revendications 1 à 4, comportant une unité de fusion-gazéification munie d'un appareil de chargement disposé en position centrale, munie d'une pluralité d'ouvertures excentrées dans la coupole de l'unité de fusion-gazéification pour introduire le minerai de fer préréduit et dans l'appareil de chargement pour introduire les constituants contenant du carbone du matériau en vrac, dans laquelle l'appareil de chargement est muni d'au moins un moyen (14) de répartition radiale du matériau en vrac radialement vers l'extérieur - en vue de dessus -, caractérisé en ce que l'appareil de chargement est muni, en amont du moyen de répartition radiale, d'au moins un moyen (13) de dispersion du matériau en vrac, agencé dans la partie supérieure du réacteur et de préférence stationnaire, au moins une fraction du matériau en vrac pouvant être répartie dans les directions radiale et tangentielle, en vue de dessus, et le moyen (13) de dispersion du matériau en vrac étant doté d'un certain nombre d'éléments semblables à des barres et / ou à des tôles, reliés les uns aux autres et décrivant ensemble la forme approximative d'un corps qui s'effile dans la direction opposée à la direction d'écoulement du matériau en vrac, présente en particulier la forme d'une pyramide, et présente une pluralité d'ouvertures, ou étant doté d'une pluralité d'anneaux décrivant ensemble la forme approximative d'un corps qui s'effile dans la direction opposée à la direction d'écoulement du matériau en vrac, présente en particulier la forme d'un cône, et présente une pluralité d'ouvertures, lesdits anneaux étant reliés les uns aux autres au moins le long d'une ligne génératrice.
  6. Appareil selon la revendication 5, caractérisé en ce qu'au moins un moyen (10) de centrage du flux de matériau en vrac est installé en amont du moyen de dispersion.
  7. Appareil selon la revendication 6, caractérisé en ce que le moyen (10) de centrage présente au moins une ouverture (11) de centrage et en ce qu'au moins un moyen d'évacuation de l'excès de matériau en vrac, de préférence une ouverture supplémentaire, est prévu, avec pour conséquence qu'un excès de matériau en vrac pouvant survenir au cours du centrage du flux peut être évacué.
  8. Appareil selon la revendication 7, caractérisé en ce que le moyen (10) de centrage est conçu comme une tôle métallique de centrage dotée d'une tôle métallique annulaire présentant un rayon intérieur et un rayon extérieur, dont au moins une région partielle, en particulier un segment d'anneau ou un secteur d'anneau, a été supprimée.
  9. Appareil selon la revendication 8, caractérisé en ce que la tôle métallique de centrage est conçue de telle manière qu'un segment d'anneau présentant un angle au centre de 180° a été supprimé de la tôle métallique annulaire.
EP01976153A 2000-09-22 2001-08-27 Procede et dispositif pour produire un lit fixe Expired - Lifetime EP1325160B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT16132000 2000-09-22
AT0161300A AT409137B (de) 2000-09-22 2000-09-22 Verfahren und vorrichtung zur erzeugung eines festbettes
PCT/EP2001/009853 WO2002027043A1 (fr) 2000-09-22 2001-08-27 Procede et dispositif pour produire un lit fixe

Publications (2)

Publication Number Publication Date
EP1325160A1 EP1325160A1 (fr) 2003-07-09
EP1325160B1 true EP1325160B1 (fr) 2007-07-25

Family

ID=3688444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01976153A Expired - Lifetime EP1325160B1 (fr) 2000-09-22 2001-08-27 Procede et dispositif pour produire un lit fixe

Country Status (20)

Country Link
US (1) US7470310B2 (fr)
EP (1) EP1325160B1 (fr)
JP (1) JP5079968B2 (fr)
KR (1) KR100778181B1 (fr)
CN (1) CN1208476C (fr)
AT (2) AT409137B (fr)
AU (2) AU9551401A (fr)
BR (1) BR0114067B1 (fr)
CA (1) CA2420544C (fr)
CZ (1) CZ2003781A3 (fr)
DE (1) DE50112768D1 (fr)
ES (1) ES2288996T3 (fr)
MX (1) MXPA03002144A (fr)
PL (1) PL196171B1 (fr)
RU (1) RU2272077C2 (fr)
SK (1) SK2752003A3 (fr)
TW (1) TW565619B (fr)
UA (1) UA73610C2 (fr)
WO (1) WO2002027043A1 (fr)
ZA (1) ZA200301706B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117419566B (zh) * 2023-12-18 2024-03-15 河北睿阳稀有金属制品有限公司 一种海绵铪生产用还原装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE478532C (de) * 1929-06-27 Ernst Knoeringer Dipl Ing Beschickungsvorrichtung fuer Schachtoefen, mit der das feine Gut nach dem Rand des Ofens, das grobe sowie der Brennstoff unter Freilassung des Ofenrandes ueber den Schachtquerschnitt verteilt wird
FR2116298B1 (fr) * 1970-12-04 1974-05-24 Wieczorek Julien
US4087274A (en) * 1975-07-04 1978-05-02 Boliden Aktiebolag Method of producing a partially reduced product from finely-divided metal sulphides
US4074836A (en) * 1976-09-22 1978-02-21 Standard Oil Company (Indiana) Apparatus for distributing solid particles into a vertical vessel
DE2812788A1 (de) * 1978-03-23 1979-09-27 Paul Dr Ing Schmalfeld Verfahren und vorrichtung zum betreiben eines hochofens fuer die reduktion von eisenerzen
JPS59153815A (ja) 1983-02-21 1984-09-01 Kawasaki Steel Corp 溶融還元炉の炭材装入装置
DE3328209A1 (de) * 1983-08-04 1985-02-21 A. & C. Kosik GmbH, 8420 Kelheim Vorrichtung zum gleichmaessigen beschicken von zylindrischen schaechten
JPS61149409A (ja) * 1984-12-24 1986-07-08 Nippon Kokan Kk <Nkk> 原料粒度分布制御装置
DE3737271A1 (de) * 1986-12-23 1988-07-07 Korf Engineering Gmbh Einschmelzvergaser
JPH01219114A (ja) * 1988-02-15 1989-09-01 Pohang Iron & Steel Co Ltd 高炉装入物分配装置
JPH02115309A (ja) 1988-10-24 1990-04-27 Sumitomo Metal Ind Ltd 高炉の原料装入方法
US5210962A (en) * 1991-09-13 1993-05-18 Jones Jr John B Vertical shaft processor
TW303389B (fr) * 1994-10-17 1997-04-21 V0Est Alpine Industrieanlagenbau Gmbh
AT406482B (de) * 1995-07-19 2000-05-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder stahlvorprodukten und anlage zur durchführung des verfahrens
DE19623246C1 (de) 1996-05-30 1997-10-02 Voest Alpine Ind Anlagen Verfahren und Vorrichtung zur Beschickung eines Einschmelzvergasers mit Vergasungsmitteln und Eisenschwamm
AT407052B (de) * 1998-08-13 2000-12-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen
JP4394767B2 (ja) * 1999-02-25 2010-01-06 新日本製鐵株式会社 複合廃棄物の処理方法

Also Published As

Publication number Publication date
PL196171B1 (pl) 2007-12-31
CZ2003781A3 (cs) 2003-10-15
BR0114067B1 (pt) 2010-11-30
AU2001295514B2 (en) 2006-05-04
WO2002027043A1 (fr) 2002-04-04
CN1208476C (zh) 2005-06-29
ZA200301706B (en) 2004-03-01
MXPA03002144A (es) 2004-05-04
ATE368130T1 (de) 2007-08-15
CN1462311A (zh) 2003-12-17
RU2272077C2 (ru) 2006-03-20
BR0114067A (pt) 2003-07-22
ES2288996T3 (es) 2008-02-01
SK2752003A3 (en) 2003-11-04
JP5079968B2 (ja) 2012-11-21
US20040099094A1 (en) 2004-05-27
KR20030030026A (ko) 2003-04-16
KR100778181B1 (ko) 2007-11-22
US7470310B2 (en) 2008-12-30
TW565619B (en) 2003-12-11
AU9551401A (en) 2002-04-08
CA2420544C (fr) 2009-11-24
AT409137B (de) 2002-05-27
PL363515A1 (en) 2004-11-29
EP1325160A1 (fr) 2003-07-09
JP2004510055A (ja) 2004-04-02
ATA16132000A (de) 2001-10-15
CA2420544A1 (fr) 2003-03-04
DE50112768D1 (de) 2007-09-06
UA73610C2 (en) 2005-08-15

Similar Documents

Publication Publication Date Title
DE10260733A1 (de) Verfahren und Anlage zur Wärmebehandlung von eisenoxidhaltigen Feststoffen
DE3888096T2 (de) Verfahren und Vorrichtung zum Herstellen von Metall, das die Schmelzreduktion von Metalloxiden enthält.
DE4240197A1 (de) Verfahren zur Herstellung von Roheisen aus Eisenoxiden und Vorrichtung zur thermischen und/oder chemischen Behandlung eines leicht zerfallenden Materials oder zur Herstellung von Roheisen mittels dieses Verfahrens
DE10260738A1 (de) Verfahren und Anlage zur Förderung von feinkörnigen Feststoffen
EP1325160B1 (fr) Procede et dispositif pour produire un lit fixe
EP0914475B1 (fr) Procede de production de fonte brute liquide ou de precurseurs d&#39;acier liquides
DE2461402B2 (de) Vorrichtung zum Beschicken eines Schachtofens mit wenigstens zwei verschiedene TeilchengröOen aufweisenden Feststoffpartikeln
EP0670771A1 (fr) Procede de production de briquettes de fer spongieux a partir de fines de minerai.
DE69700267T2 (de) Verfahren zum Beschicken eines Kupolofens mit Schrott und Koks
EP2734649B1 (fr) Ensemble de réduction par fusion et procédé permettant de faire fonctionner un ensemble de réduction par fusion
EP2215418A1 (fr) Procédé de fabrication et de fusion de fonte brute liquide ou de demi-produits d&#39;acier liquide dans un gazéificateur de fusion
AT511797A4 (de) Vorrichtung zur zufuhr von energieträgern, eisenträgern sowie zusatzstoffen auf die oberfläche eines festbettes
EP1105544B1 (fr) Procede de production de zinc selon le procede imperial smelting dans une installation a four vertical pour imperial smelting
DE102004001708B4 (de) Verfahren und Vorrichtung zur kontinuierlichen Beschickung von Festbett-Druckvergasungsreaktoren
EP0516613B1 (fr) Installation comportant une cuve, en particulier four à cuve de réduction
AT409140B (de) Verfahren und vorrichtung zum verteilen eines stückigen schüttgutes
EP0321018B1 (fr) Procédé de réduction directe de matériaux ferreux dans un four rotatif
EP1941066B1 (fr) Procede de chargement de matieres de charge
DE3441082A1 (de) Schmelzanordnung
DE1531817A1 (de) Vorrichtung zur gleichzeitigen Beschickung eines Behaelters,insbesondere eines Bunkers,Silos oder Reaktors mit einem stueckigen und einem feinkoernigen Gut
DE1433359C (de) Verfahren und Vorrichtung zur kontinuierlichen Gewinnung von flüssigen, eisenhaltigen Metallegierungen in einem Drehrohrofen
WO2009071406A1 (fr) Dispositif pour charger un four
DE1266686B (de) Vorrichtung zum pneumatischen Foerdern von festem, fluidisierbarem Material
DE2164253A1 (de) Direktes Reduktionsverfahren zur Herstellung von Schwammeisen und hierzu geeignete Vorrichtung
DE10358450A1 (de) Verfahren zur Erzeugung von Metall aus Metallerzen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030226

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20050422

17Q First examination report despatched

Effective date: 20050422

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS VAI METALS TECHNOLOGIES GMBH & CO

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50112768

Country of ref document: DE

Date of ref document: 20070906

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070919

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070725

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071226

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2288996

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071026

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070831

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070831

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070725

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080428

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080911

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070725

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090821

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090813

Year of fee payment: 9

Ref country code: SE

Payment date: 20090811

Year of fee payment: 9

Ref country code: TR

Payment date: 20090731

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090819

Year of fee payment: 9

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090828

BERE Be: lapsed

Owner name: SIEMENS VAI METALS TECHNOLOGIES GMBH & CO

Effective date: 20100831

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100827

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100828

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20120824

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100827

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121019

Year of fee payment: 12

Ref country code: NL

Payment date: 20120806

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20120711

Year of fee payment: 12

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140301

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 368130

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140301

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130827

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50112768

Country of ref document: DE

Effective date: 20140301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130827

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20160825

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170827