EP3918262B1 - Tower structure of a pre-heating tower of a plant for thermally processing minerals, and method for constructing the pre-heating tower - Google Patents

Tower structure of a pre-heating tower of a plant for thermally processing minerals, and method for constructing the pre-heating tower Download PDF

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Publication number
EP3918262B1
EP3918262B1 EP20820156.6A EP20820156A EP3918262B1 EP 3918262 B1 EP3918262 B1 EP 3918262B1 EP 20820156 A EP20820156 A EP 20820156A EP 3918262 B1 EP3918262 B1 EP 3918262B1
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EP
European Patent Office
Prior art keywords
platform
tower
tower structure
cross
mounting position
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.)
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Application number
EP20820156.6A
Other languages
German (de)
French (fr)
Other versions
EP3918262A1 (en
Inventor
Michael MENNE
Reinhard Giesemann
Edib BEN TALEB
Thomas Rüther
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.)
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
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.)
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Publication date
Priority claimed from BE20195898A external-priority patent/BE1027848B1/en
Priority claimed from DE102019219499.0A external-priority patent/DE102019219499A1/en
Application filed by ThyssenKrupp AG, ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp AG
Publication of EP3918262A1 publication Critical patent/EP3918262A1/en
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Publication of EP3918262B1 publication Critical patent/EP3918262B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • 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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • 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
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements

Definitions

  • the invention relates to a tower structure of a preheating tower of a plant for thermal processing of minerals.
  • the invention also relates to a preheating tower with such a tower structure and a plurality of platforms, as well as a method for erecting the preheating tower.
  • multi-storey preheating towers are erected to preheat the raw meal before the meal is fed into the kiln.
  • a 6-stage preheater eight to nine platforms are usually provided, so that the building tower can reach a height of 160-170 m.
  • the construction time of the preheating tower is particularly time-consuming and usually takes 14 to 19 months.
  • the completion date of a cement plant is therefore essentially determined by the time required for erecting the preheating tower.
  • the preheating tower is made of concrete or steel, with the individual platforms being assembled one after the other from the bottom up and the machine equipment being lifted in with large heavy-duty cranes.
  • the profiles of the platforms are pulled up individually or in pre-assembled units and assembled to form the platforms. The same procedure is carried out with the components of the machine equipment.
  • the lining material required for certain components is transported to the respective platforms in the building tower, for example via a material lift and with the support of cable winches and large cranes, from where it is transported further manually and then installed.
  • a tower structure of a preheating tower of a plant for thermal processing of minerals comprising a plurality of support beams which extend vertically and parallel to one another and are connected to one another via cross beams, and a plurality of mounting positions each for attaching a platform to the tower structure.
  • the current method is time consuming and expensive due to the use of expensive jumbo cranes and many overhead hoists of steel and equipment into the building. These maneuvers are also associated with a non-negligible risk of accidents.
  • the invention is therefore based on the object of developing a preheating tower and a method for erecting such a preheating tower with which the construction and assembly time can be significantly reduced.
  • this object is achieved by a tower structure of a preheating tower having the features of independent device claim 1 and by a method for erecting a preheating tower having the features of independent method claim 7 9- .
  • a tower structure of a preheating tower of a plant for the thermal processing of minerals comprises a plurality of support beams which extend vertically and parallel to one another and are connected to one another via cross beams.
  • the support beams are, in particular, supports that extend exclusively in the vertical direction.
  • the tower structure comprises a plurality of assembly positions for respectively attaching a platform to the tower structure.
  • the cross-sectional profile of at least two of the girders varies over the height of the tower structure, particularly over the length of the girders.
  • the plant for the thermal processing of minerals is, for example, a cement production plant with a preheater, a subsequent kiln and a cooler for cooling the clinker emerging from the kiln.
  • a preheating tower preferably has a plurality of cyclones which are arranged one behind the other in, for example, five cyclone stages and separate solids and gas from these.
  • the cyclones are connected to each other via pipes for conducting raw meal and/or kiln exhaust gas.
  • raw meal such as mineral material such as limestone, passes through the individual cyclone stages from top to bottom and is preheated by the kiln exhaust gas in countercurrent.
  • the kiln exhaust gas enters the last or lowest cyclone stage in the preheater from below and flows from bottom to top through the individual cyclone stages, where it is cooled by the raw meal in the heat exchange.
  • a calciner is optionally arranged between the last and penultimate cyclone stage, which has a combustion device and ensures additional deacidification and calcination of the raw meal before it enters the kiln.
  • the tower structure is made of concrete and/or steel, for example, and preferably comprises only the structural elements of the building.
  • the support beams are preferably each formed in one piece, for example from steel and/or concrete, and in particular extend from the ground level to the top floor of the tower structure.
  • the support beams each have a cross-sectional profile that is H, T, L, I, O or U-shaped.
  • two adjacent girders have a cross-sectional profile that varies with the height of the tower structure.
  • the cross-sectional profiles of the two adjacent beams preferably change in an identical manner.
  • the support beams are preferably arranged at the corners of the tower structure and form the outer edges of the tower structure.
  • the assembly positions are to be understood as meaning the positions on the tower structure at which platforms can be attached, which, for example, form a complete or part of a floor of the preheating tower.
  • the mounting positions are preferably arranged to one another over the height, in particular spaced evenly.
  • the tower structure preferably includes fastening devices, such as bores or brackets, for fastening the platform to the tower structure.
  • the assembly positions correspond, in particular, to the positions of the respective levels/stories of the tower structure, in particular of the preheating tower, with the lowermost assembly position being the first assembly position and the assembly position above it being the second assembly position.
  • the crossbeams preferably each extend between two adjacent beams.
  • the crossbeams extend at least partially or completely horizontally, preferably orthogonally to the beams.
  • the assembly positions are preferably each arranged on a cross member or at the level of at least one cross member. This serves in particular to stiffen the tower structure.
  • a changing cross-sectional profile of at least two, in particular adjacent, beams offers the advantage that the distance between two beams on the The height of the tower structure varies without causing a significant weakening of the load-bearing capacity or increasing the complexity of the structure.
  • At least two carrier beams each have a first and a second cross-sectional profile, the first cross-sectional profile being formed on the lower end region of the carrier beam.
  • the two carrier beams preferably have only two cross-sectional profiles, namely a lower and an upper cross-sectional profile.
  • the first cross-sectional profile is formed below a first or second mounting position.
  • the first cross-sectional profile preferably merges into the second cross-sectional profile at the level of the first or second assembly position.
  • exclusively the first cross-sectional profile is formed below the first or second mounting position.
  • the first and the second assembly position is to be understood as meaning the position of the first and the second floor of the preheating tower.
  • the first cross-sectional profile of two adjacent support beams is designed in such a way that the distance between the support beams is greater below the first or second mounting position than above.
  • the distance forms an insertion area for inserting a platform, the distance corresponding approximately to the width of the platform.
  • the first and/or the second cross-sectional profile is an H, T, L, I, O or U.
  • the first cross-sectional profile is rotated about 90° to the second cross-sectional profile about the longitudinal axis of the beam.
  • the first cross-sectional profile has an angle profile with two legs, with one of the legs pointing outwards.
  • a removable cross member or no cross member is attached below the second assembly position between the support beams with cross-sectional profiles that change over the length.
  • At least two support beams preferably do not have a cross member below the second assembly position.
  • only three crossbeams are attached at the level of the first assembly position.
  • the tower structure is designed in such a way that the distance between the first and the second assembly position is greater than the height of the platform.
  • the distance between the first and the second assembly position is approximately 1 m to 6 m, preferably 2 m to 5 m, in particular 4 m.
  • the absence of one of the crossbeams allows an assembled platform to be slid into the tower structure, although the height of the platform exceeds the floor height.
  • the invention also includes a preheating tower of a plant for thermal processing of minerals with a tower structure as described above and a plurality of platforms, each platform having a bottom plate and at least one cyclone attached thereto and wherein each platform is attached to a mounting position of the tower structure.
  • the platform has, for example, at least one pipeline for conducting material and/or furnace exhaust air. When assembled, each platform preferably forms a complete or at least part of a floor of the preheating tower.
  • the height of the platform exceeds the vertical distance between two adjacent assembly positions of the tower structure.
  • the platform has a cross beam which is attached between the two beams with a cross-sectional profile that changes over the length.
  • the cross member is preferably attached to the platform and attached to the tower structure together with it.
  • Steps a to f are preferably carried out one after the other.
  • Step a preferably includes the complete erection of the tower structure so that the platforms can be assembled. Assembling the platform means connecting the platform to the tower structure.
  • the erection of the tower structure is preferably carried out using a slip construction and/or a climbing construction made of concrete and/or steel.
  • the construction of the platform according to method step (b) takes place by assembling profiles made of steel and/or concrete.
  • the platforms are lifted into their respective installation position in the tower structure, expediently by means of strand jacks and/or cable pulls and/or pneumatic and/or hydraulic lifting tools.
  • at least three, preferably at least four or more platforms are introduced into the building structure.
  • the tower structure can be erected with a height above the ground of at least 50 m, preferably at least 80 m and most preferably at least 100 m.
  • the assembly of the platform takes place at a level below the lowest assembly position, preferably at floor level.
  • the platform is assembled at ground level within the tower structure.
  • the main difference from previous practice when erecting a multi-storey building tower is that the individual platforms are set up at a level below their assembly position, in particular on the ground or on the assembly platforms provided on the ground, and then raised into their installation position in the tower structure, with the platforms are gradually introduced into the building structure, starting with an upper platform down to the lower platform. Since the platform is mainly set up on the ground, it is possible to set up several platforms at the same time. Since the construction of a platform takes more time than its installation, the assembly time is significantly reduced by working on several platforms in parallel.
  • the platforms are expediently equipped with machinery intended for the respective platform while they are still on the ground. They can also be fully or partially equipped with the necessary electrics and/or control technology. If individual machine parts are to be provided with a refractory lining, the platforms can be fully or partially equipped with a refractory lining required for the platform in question while they are still on the ground. The refractory lining can only be provided on the platform or installed directly in the corresponding machine parts.
  • the assembled platform is pushed laterally into the tower structure below the second assembly position, preferably below the first assembly position.
  • the first mounting position is preferably to be understood as the position of the first floor of the preheating tower, the usual way of counting buildings being used here and the first floor being the lowest floor above the ground floor.
  • a Cross members removed from the tower structure below the second mounting position.
  • the cross member fitted between the two support beams with the cross-sectional profile that changes over the height is removed.
  • the crossbeam is preferably reattached to its previous position.
  • the platform is assembled in such a way that the height of the platform exceeds the distance between two adjacent floors, in particular assembly positions, of the preheating tower.
  • the platform is raised within the tower structure, preferably completely within the tower structure and in particular after the respective platform has been completely assembled within the tower structure.
  • the advantage of this is that the platform can be lifted up into its installation position within the building structure, which completely eliminates the need for a large number of gravity cranes placed outside the building tower for lifting the platforms.
  • the building structure itself therefore takes over the function of the cranes. This measure can also significantly shorten the assembly time.
  • occupational safety is significantly improved, as the fully assembled platform on the ground only has to be pushed into the building structure and then lifted straight up into its installation position.
  • the assembly of at least one of the platforms comprises the mounting of at least one cyclone on a floor structure.
  • the tower structure is achieved by assembling profiles made of steel or concrete, so that the tower structure has a wider lateral insertion opening below the second assembly position, preferably below the first or second assembly position, than above the first or second assembly position.
  • Fig. 1 shows a preheating tower 10 which is, for example, part of a plant for the thermal treatment of materials, such as a cement production plant.
  • the preheating tower 10 has a plurality of cyclones 28 which are used to separate gas and material. Examples are in 1 four cyclone stages are shown through which the raw material passes.
  • the preheating tower 10 has, for example, a calciner 30, which is used for deacidifying and precalcining the material.
  • materials such as limestone, ores, clays or other mineral products are preheated and deacidified in countercurrent, with the heated exhaust gas being discharged a kiln, such as a rotary kiln, is introduced into the preheating tower from below and passes through a plurality of cyclones.
  • the material to be heated enters the preheating tower 10 at the top and passes through the plurality of cyclones countercurrent to the furnace off-gas.
  • the cyclones 28 and the calciner 30 are preferably connected to one another via pipelines 34 .
  • the material in particular the burned cement clinker, has a temperature of about 1150-1450°C, preferably 1400°C.
  • the preheating tower 10 includes a tower structure 12 and a plurality of platforms 14 attached to the tower structure 12 .
  • the preheating tower 10 has six platforms 14 which are spaced apart from one another at the height of the tower.
  • the platforms 14 are preferably aligned horizontally and parallel to one another and in particular are spaced apart from one another in a substantially uniform manner.
  • Each platform 14 preferably forms all or part of a floor of the preheating tower 10 .
  • the lowermost platform 14 includes a kiln outlet 32 through which the hot kiln off-gas enters the preheat tower 10 and the preheated material exits the preheat tower 10 and enters the kiln.
  • the tower structure 12 has, for example, four vertical support beams 16a-d, which extend parallel to one another and form the outer structural edges of the tower structure 12.
  • the support beams 16a-d are connected to one another via crossbeams 18-26.
  • the crossbeams 18-26 extend, for example, horizontally, substantially orthogonally to the beams 16a-d. It is also conceivable that the cross members 18-26 only extend with a partially horizontal component.
  • Each cross member 18-26 connects two adjacent beams 16a-d to each other.
  • the tower structure 12 of 2 has, for example, at a height level of a respective floor of the preheating tower 10, a crossbeam group ad each having a plurality of crossbeams 18-26a-d.
  • the tower structure 12 has a plurality of assembly positions, at each of which a platform 14 can be attached.
  • Fastening means arranged to fasten a respective platform 14 to the tower structure 12 in a respective mounting position.
  • the tower structure 12 has lateral openings whose width is limited by the distance between two adjacent support beams 16a-d.
  • the height of the respective opening is determined by the distance between two adjacent crossbeams 16-24, preferably two adjacent floors of the tower structure 12.
  • Tower structure 12 preferably has a square cross-section.
  • the carrier beams 16a-d each have, for example, an angle profile that has an angle with equal or unequal sides.
  • the support beams 16a-d are aligned with one another, for example, in such a way that, at least in the upper area of the tower structure 12, the angle profiles point outwards and form the outer corners of the tower structure 12 in each case.
  • FIG. 12 further shows a cross section of the tower structure 12 formed in a region above the second floor of the tower structure 12.
  • all support beams 16a-d above the second floor of the tower structure 12 have a constant cross-sectional profile.
  • the tower structure 12 does not have a cross member below the second floor on a side surface of the tower structure.
  • a cross member 18-26a-d is attached to each side surface, preferably at the same height level.
  • the lowest, first floor has, for example, only three crossbeams 18b-d.
  • 3 12 shows two embodiments of a cross-sectional profile of the tower structure 12 below the second floor.
  • Two of the support beams 16a and 16b each have, for example, a first cross-sectional profile and a second cross-sectional profile.
  • the first cross-sectional profile is arranged below the second floor and the second cross-sectional profile is arranged above the second floor of the tower structure 12 . That the first and the second cross-sectional profile of a respective support beam 16a-b have, for example, the same cross-sectional area.
  • the first cross-sectional profile is designed as an angle profile with unequal legs, the longer of the two legs pointing outwards and the shorter leg pointing in the direction of the adjacent support beam 16c or 16d.
  • the first cross-sectional profile of the adjacent support beams 16a and 16b each have a rectangular cross-sectional area which corresponds, for example, to a leg of the angle profile above the second floor of the tower structure 12.
  • the first cross-sectional profile of the adjacent support beams 16a and 16b is preferably formed and oriented in such a way that the spacing of the adjacent support beams 16a and 16 is greater below the second floor than above the second floor of the tower structure 12.
  • the first cross-sectional profile is compared to the second cross-sectional profile rotated 90° around the tip of the leg, for example.
  • the first cross-sectional profile merges into the second cross-sectional profile at the level of the second floor, so that the distance between the adjacent girders 16 and 16b above the second floor is smaller than below the second floor of the tower structure 12.
  • the second cross-sectional profile of the girders 16a and 16b is preferably designed as an isosceles angle profile.
  • FIG. 3 shows only two examples of cross-sectional profiles of the support beams 16 below the second floor of the tower structure 12, further embodiments being conceivable in which the lower cross-sectional profile of two adjacent support beams 16a and 16b is designed and aligned in such a way that the distance between the support beams 16a and 16b is greater is than above the second floor.
  • the platform 14 comprises, for example, a floor panel 36 which is designed, for example, as a grid floor or from a plurality of floor planks.
  • the base plate 36 preferably has one or a plurality of openings, in which components for material processing are mounted or through which, for example, pipes or cyclones of other platforms 14 extend.
  • the platform 14 further preferably includes components for processing or transporting material or air, such as a cyclone 28 or a plurality of ducts 34 that direct material to or from the cyclone 28.
  • the platform 14 includes at least one cyclone 28 and a bottom plate 36, with the cyclone 28 being attached to the bottom plate 36.
  • FIG 4 shows an example of the upper end of the calciner 30, the arrangement of the cyclone 28 and the part of the calciner 30 also in figure 5 is shown.
  • figure 5 shows the platform 14 of 4 in a top view.
  • the platforms 14 are assembled, for example, outside of the tower structure 12, for example a plurality of platforms 14 being assembled at the same time.
  • the platforms 14 are then successively pushed laterally into the tower structure 12 below the second floor.
  • the platforms 14 are preferably pushed into the tower structure 12 between the support beams 16a and 16b with the changed cross-sectional profile, since the opening between these support beams 16a and 16b is larger than between the other support beams 16 and, in particular, essentially corresponds to the width of the platform 14 .
  • the height of the assembled platforms with cyclones 28, pipelines 34, calciner 30 and/or kiln outlet 32 exceeds in particular the floor height of one floor of the preheating tower 10, preferably the vertical distance between two adjacent assembly positions of the tower structure 12.
  • the first of the plurality of platforms 14 is raised within the tower structure 14, preferably by means of a lifting device, such as a cable winch, to an upper, in particular the uppermost, assembly position and attached to it, so that the first platform is preferably an upper or the top floor of the Preheating tower 10 forms.
  • a lifting device such as a cable winch
  • further platforms 14 are gradually pushed into the tower structure 12 in the same way and raised up to the respective assembly position, with the following Mounting positions are arranged below the first mounting position and the order of mounting the platforms 14 on the tower structure 12 is from top to bottom.
  • one platform 14 is assembled within the tower structure 12 at ground level and then raised to the respective assembly position and fastened there, as described above. Another platform is then assembled at ground level within the tower structure 12 and secured at a mounting location below the previous mounting location.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Furnace Details (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Description

Die Erfindung betrifft eine Turmstruktur eines Vorwärmturms einer Anlage zur thermischen Bearbeitung von Mineralien. Die Erfindung betrifft auch einen Vorwärmturm mit einer solchen Turmstruktur und einer Mehrzahl von Plattformen, sowie ein Verfahren zum Errichten des Vorwärmturms.The invention relates to a tower structure of a preheating tower of a plant for thermal processing of minerals. The invention also relates to a preheating tower with such a tower structure and a plurality of platforms, as well as a method for erecting the preheating tower.

In der Zementindustrie werden mehrgeschossige Vorwärmtürme errichtet, um das Rohmehl vorzuwärmen, bevor das Mehl in den Ofen aufgegeben wird. Beispielsweise werden bei einem 6-stufigen Vorwärmer üblicherweise acht bis neun Plattformen vorgesehen, sodass der Gebäudeturm eine Höhe von 160 - 170 m erreichen kann. Die Aufbauzeit des Vorwärmturms ist besonders zeitintensiv und benötigt üblicherweise 14 bis 19 Monate. Der Fertigstellungstermin einer Zementanlage wird daher im Wesentlichen durch den für die Errichtung des Vorwärmturms erforderlichen Zeitraum bestimmt. Der Vorwärmturm wird nach heutigem Stand in Beton oder Stahl ausgeführt, wobei die einzelnen Plattformen nacheinander von unten nach oben montiert werden und die Maschinenausrüstung mit großen Schwerlastkränen eingehoben wird. Die Profile der Plattformen werden dabei einzeln oder in vormontierten Einheiten hochgezogen und zu den Plattformen montiert. Die gleiche Vorgehensweise erfolgt mit den Komponenten der Maschinenausrüstung. Das für bestimmte Komponenten erforderliche Ausmauerungsmaterial wird beispielsweise über einen Materiallift sowie mit Unterstützung von Seilwinden und Großkränen auf die jeweiligen Plattformen im Gebäudeturm transportiert, von wo ein manueller Weitertransport und der anschließende Einbau erfolgen.In the cement industry, multi-storey preheating towers are erected to preheat the raw meal before the meal is fed into the kiln. For example, with a 6-stage preheater, eight to nine platforms are usually provided, so that the building tower can reach a height of 160-170 m. The construction time of the preheating tower is particularly time-consuming and usually takes 14 to 19 months. The completion date of a cement plant is therefore essentially determined by the time required for erecting the preheating tower. According to the current state of the art, the preheating tower is made of concrete or steel, with the individual platforms being assembled one after the other from the bottom up and the machine equipment being lifted in with large heavy-duty cranes. The profiles of the platforms are pulled up individually or in pre-assembled units and assembled to form the platforms. The same procedure is carried out with the components of the machine equipment. The lining material required for certain components is transported to the respective platforms in the building tower, for example via a material lift and with the support of cable winches and large cranes, from where it is transported further manually and then installed.

Zum Beispiel offenbart EP0125973 eine Turmstruktur eines Vorwärmturms einer Anlage zur thermischen Bearbeitung von Mineralien aufweisend eine Mehrzahl von Trägerbalken, die sich vertikal und parallel zueinander erstrecken und über Querträger miteinander verbunden sind, und eine Mehrzahl von Montagepositionen jeweils zum Anbringen einer Plattform an der Turmstruktur.For example revealed EP0125973 a tower structure of a preheating tower of a plant for thermal processing of minerals comprising a plurality of support beams which extend vertically and parallel to one another and are connected to one another via cross beams, and a plurality of mounting positions each for attaching a platform to the tower structure.

Das derzeitige Verfahren ist durch den Einsatz teurer Großkräne sowie vieler Überkopf-Hebemanöver für Stahl und Ausrüstung in das Gebäude zeitaufwendig und teuer. Auch sind diese Manöver mit einer nicht zu vernachlässigenden Unfallgefahr verbunden.The current method is time consuming and expensive due to the use of expensive jumbo cranes and many overhead hoists of steel and equipment into the building. These maneuvers are also associated with a non-negligible risk of accidents.

Der Erfindung liegt daher die Aufgabe zugrunde einen Vorwärmturm und ein Verfahren zur Errichtung eines solchen Vorwärmturms zu entwickeln, mit dem sich die Bau- und Montagezeit erheblich verkürzen lässt.The invention is therefore based on the object of developing a preheating tower and a method for erecting such a preheating tower with which the construction and assembly time can be significantly reduced.

Diese Aufgabe wird erfindungsgemäß durch eine Turmstruktur eines Vorwärmturms mit den Merkmalen des unabhängigen Vorrichtungsanspruchs 1 und durch ein Verfahren zum Errichten eines Vorwärmturms mit den Merkmalen des unabhängigen Verfahrensanspruchs 7 9- gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.According to the invention, this object is achieved by a tower structure of a preheating tower having the features of independent device claim 1 and by a method for erecting a preheating tower having the features of independent method claim 7 9- . Advantageous developments result from the dependent claims.

Eine Turmstruktur eines Vorwärmturms einer Anlage zur thermischen Bearbeitung von Mineralien zum umfasst nach einem ersten Aspekt eine Mehrzahl von Trägerbalken, die sich vertikal und parallel zueinander erstrecken und über Querträger miteinander verbunden sind. Bei den Trägerbalken handelt es sich insbesondere um sich ausschließlich in vertikaler Richtung erstreckenden Stützen. Des Weiteren umfasst die Turmstruktur eine Mehrzahl von Montagepositionen zum jeweiligen Anbringen einer Plattform an der Turmstruktur. Das Querschnittsprofil von zumindest zwei der Trägerbalken ändert sich über die Höhe der Turmstruktur, insbesondere über die Länger der Trägerbalken.According to a first aspect, a tower structure of a preheating tower of a plant for the thermal processing of minerals comprises a plurality of support beams which extend vertically and parallel to one another and are connected to one another via cross beams. The support beams are, in particular, supports that extend exclusively in the vertical direction. Furthermore, the tower structure comprises a plurality of assembly positions for respectively attaching a platform to the tower structure. The cross-sectional profile of at least two of the girders varies over the height of the tower structure, particularly over the length of the girders.

Bei der Anlage zur thermischen Bearbeitung von Mineralien handelt es sich beispielsweise um eine Zementherstellungsanlage mit einem Vorwärmer, einem sich daran anschließenden Ofen und einem Kühler zum Kühlen des aus dem Ofen austretenden Klinkers. Ein Vorwärmturm weist vorzugsweise eine Mehrzahl von Zyklonen auf die in beispielsweise fünf Zyklonenstufen hintereinander angeordnet sind und der Trennung von Feststoff und Gas diesen. Die Zyklone sind miteinander über Rohrleitungen zum Leiten von Rohmehl und/ oder Ofenabgas verbunden. Im Betrieb des Vorwärmers wird Rohmehl in die oberste Zyklonstufe aufgegeben. Das Rohmehl, wie beispielsweise mineralisches Material, wie Kalkstein, durchläuft die einzelnen Zyklonstufen von oben nach unten und wird dabei von dem Ofenabgas im Gegenstrom vorgewärmt. Das Ofenabgas tritt von unten in die letzte, bzw. unterste Zyklonstufe in den Vorwärmer ein und strömt von unten nach oben durch die einzelnen Zyklonstufen, wobei es durch das Rohmehl im Wärmetausch abgekühlt wird. Zwischen der letzte und der vorletzten Zyklonstufe ist optional ein Kalzinator angeordnet, der eine Brenneinrichtung aufweist und für eine zusätzliche Entsäuerung und Kalzinierung des Rohmehls vor dem Eintreten in den Ofen sorgt.The plant for the thermal processing of minerals is, for example, a cement production plant with a preheater, a subsequent kiln and a cooler for cooling the clinker emerging from the kiln. A preheating tower preferably has a plurality of cyclones which are arranged one behind the other in, for example, five cyclone stages and separate solids and gas from these. The cyclones are connected to each other via pipes for conducting raw meal and/or kiln exhaust gas. When the preheater is in operation, raw meal is fed into the top cyclone stage. The raw meal, such as mineral material such as limestone, passes through the individual cyclone stages from top to bottom and is preheated by the kiln exhaust gas in countercurrent. The kiln exhaust gas enters the last or lowest cyclone stage in the preheater from below and flows from bottom to top through the individual cyclone stages, where it is cooled by the raw meal in the heat exchange. A calciner is optionally arranged between the last and penultimate cyclone stage, which has a combustion device and ensures additional deacidification and calcination of the raw meal before it enters the kiln.

Die Turmstruktur ist beispielsweise aus Beton und/ oder Stahl ausgebildet und umfasst vorzugsweise lediglich die Strukturelemente des Gebäudes. Die Trägerbalken sind vorzugsweise jeweils einstückig beispielsweise aus Stahl und/ oder Beton ausgebildet und erstrecken sich insbesondere von dem Bodenniveau bis zur obersten Etage der Turmstruktur. Beispielsweise weisen die Trägerbalken jeweils ein Querschnittsprofil auf, das H, T, L, I, O oder U-förmig ausgebildet ist. Vorzugsweise weisen zwei benachbarte Trägerbalken ein Querschnittsprofil auf, das sich mit der Höhe der Turmstruktur ändert. Die Querschnittsprofile der beiden benachbarten Trägerbalken ändern sich vorzugsweise auf identische Weise. Die Trägerbalken sind vorzugsweise an den Ecken der Turmstruktur angeordnet und bilden die äußeren Kanten der Turmstruktur aus.The tower structure is made of concrete and/or steel, for example, and preferably comprises only the structural elements of the building. The support beams are preferably each formed in one piece, for example from steel and/or concrete, and in particular extend from the ground level to the top floor of the tower structure. For example, the support beams each have a cross-sectional profile that is H, T, L, I, O or U-shaped. Preferably, two adjacent girders have a cross-sectional profile that varies with the height of the tower structure. The cross-sectional profiles of the two adjacent beams preferably change in an identical manner. The support beams are preferably arranged at the corners of the tower structure and form the outer edges of the tower structure.

Unter den Montagepositionen sind die Positionen an der Turmstruktur zu verstehen, an denen Plattformen anbringbar sind, die beispielsweise eine vollständige oder Teile einer Etage des Vorwärmturms ausbilden. Die Montagepositionen sind vorzugsweise über die Höhe zueinander, insbesondere gleichmäßig beabstandet angeordnet. Die Turmstruktur umfasst an ihren Montagepositionen vorzugweise jeweils Befestigungseinrichtungen, wie Bohrungen oder Halterungen, zum Befestigen der Plattform an der Turmstruktur. Die Montagepositionen entsprechen insbesondere den Positionen der jeweiligen Etagen/ Stockwerke der Turmstruktur, insbesondere des Vorwärmturms, wobei die unterste Montageposition die erste Montageposition und die darüber liegende Montageposition die zweite Montageposition ist.The assembly positions are to be understood as meaning the positions on the tower structure at which platforms can be attached, which, for example, form a complete or part of a floor of the preheating tower. The mounting positions are preferably arranged to one another over the height, in particular spaced evenly. At its assembly positions, the tower structure preferably includes fastening devices, such as bores or brackets, for fastening the platform to the tower structure. The assembly positions correspond, in particular, to the positions of the respective levels/stories of the tower structure, in particular of the preheating tower, with the lowermost assembly position being the first assembly position and the assembly position above it being the second assembly position.

Die Querträger erstrecken sich vorzugsweise jeweils zwischen zwei benachbarten Trägerbalken. Insbesondere erstrecken sich die Querträger zumindest teilweise oder vollständig horizontal, vorzugsweise orthogonal zu den Trägerbalken. Die Montagepositionen sind vorzugsweise jeweils an einem Querträger oder auf dem Höhenniveau zumindest eines Querträgers angeordnet. Dies dient insbesondere zum Versteifen der Turmstruktur.The crossbeams preferably each extend between two adjacent beams. In particular, the crossbeams extend at least partially or completely horizontally, preferably orthogonally to the beams. The assembly positions are preferably each arranged on a cross member or at the level of at least one cross member. This serves in particular to stiffen the tower structure.

Ein sich änderndes Querschnittsprofil von zumindest zwei, insbesondere benachbarten, Trägerbalken bietet den Vorteil, dass der Abstand zwischen zwei Trägerbalken über die Höhe der Turmstruktur variiert ohne eine signifikante Schwächung der Tragfähigkeit hervorzurufen oder die Komplexität der Konstruktion zu erhöhen.A changing cross-sectional profile of at least two, in particular adjacent, beams offers the advantage that the distance between two beams on the The height of the tower structure varies without causing a significant weakening of the load-bearing capacity or increasing the complexity of the structure.

Gemäß der Erfindung weisen zumindest zwei Trägerbalken jeweils ein erstes und ein zweites Querschnittsprofil auf, wobei das erste Querschnittsprofil an dem unteren Endbereich des Trägerbalkens ausgebildet ist. Vorzugsweise weisen die zwei Trägerbalken ausschließlich zwei Querschnittsprofile, nämlich ein unteres und ein oberes Querschnittsprofil auf.According to the invention, at least two carrier beams each have a first and a second cross-sectional profile, the first cross-sectional profile being formed on the lower end region of the carrier beam. The two carrier beams preferably have only two cross-sectional profiles, namely a lower and an upper cross-sectional profile.

Gemäß einer weiteren Ausführungsform ist das erste Querschnittsprofil unterhalb einer ersten oder zweiten Montageposition ausgebildet. Vorzugsweise geht das erste Querschnittsprofil auf der Höhe der ersten oder zweiten Montageposition in das zweite Querschnittsprofil über. Unterhalb der ersten oder zweiten Montageposition ist insbesondere ausschließlich das erste Querschnittsprofil ausgebildet. Unter der ersten bzw. der zweiten Montageposition ist die Position der ersten bzw. der zweiten Etage des Vorwärmturms zu verstehen.According to a further embodiment, the first cross-sectional profile is formed below a first or second mounting position. The first cross-sectional profile preferably merges into the second cross-sectional profile at the level of the first or second assembly position. In particular, exclusively the first cross-sectional profile is formed below the first or second mounting position. The first and the second assembly position is to be understood as meaning the position of the first and the second floor of the preheating tower.

Das erste Querschnittsprofil von zwei benachbarten Trägerbalken ist gemäß der Erfindung derart ausgebildet, dass der Abstand zwischen den Trägerbalken unterhalb der ersten oder zweiten Montageposition größer ist als oberhalb. Der Abstand bildet insbesondere einen Einschubbereich zum Einschieben einer Plattform, wobei der Abstand in etwa der Breite der Plattform entspricht. Ein vergrößerter Abstand der Trägerbalken bietet den Vorteil, eine vollständig montierte Plattform in die Turmstruktur von außen einschieben zu können. Eine Montage der Plattform innerhalb der Turmstruktur ist somit nicht mehr notwendig.According to the invention, the first cross-sectional profile of two adjacent support beams is designed in such a way that the distance between the support beams is greater below the first or second mounting position than above. In particular, the distance forms an insertion area for inserting a platform, the distance corresponding approximately to the width of the platform. An increased spacing of the support beams offers the advantage of being able to slide a fully assembled platform into the tower structure from the outside. An assembly of the platform within the tower structure is therefore no longer necessary.

Vorzugsweise ist das erste und/ oder das zweite Querschnittsprofil ein H, T, L, I, O oder U. Beispielweise ist das erste Querschnittsprofil um etwa 90° zu dem zweiten Querschnittsprofil um die Längsachse des Trägerbalkens gedreht. Beispielsweise weist das erste Querschnittsprofil ein Winkelprofil mit zwei Schenkeln auf, wobei einer der Schenkel nach außen weist.Preferably, the first and/or the second cross-sectional profile is an H, T, L, I, O or U. For example, the first cross-sectional profile is rotated about 90° to the second cross-sectional profile about the longitudinal axis of the beam. For example, the first cross-sectional profile has an angle profile with two legs, with one of the legs pointing outwards.

Gemäß einer weiteren Ausführungsform ist unterhalb der zweiten Montageposition zwischen den Trägerbalken mit sich über die Länge ändernden Querschnittsprofilen ein demontierbarer Querträger oder kein Querträger angebracht. Zumindest zwei Trägerbalken weisen vorzugsweise unterhalb der zweiten Montageposition keinen Querträger auf. Beispielsweise sind auf dem Höhenniveau der ersten Montageposition lediglich drei Querträger angebracht. Beispielsweise ist die Turmstruktur derart ausgebildet, dass der Abstand der ersten und der zweiten Montageposition größer ist als die Höhe der Plattform. Insbesondere ist Abstand der ersten und der zweiten Montageposition etwa 1m bis 6m, vorzugsweise 2m bis 5m, insbesondere 4m aufweist. Das Fehlen eines der Querträger ermöglicht das Einschieben einer montierten Plattform in die Turmstruktur, obwohl die Höhe der Plattform die Etagenhöhe übersteigt.According to a further embodiment, a removable cross member or no cross member is attached below the second assembly position between the support beams with cross-sectional profiles that change over the length. At least two support beams preferably do not have a cross member below the second assembly position. For example, only three crossbeams are attached at the level of the first assembly position. For example, the tower structure is designed in such a way that the distance between the first and the second assembly position is greater than the height of the platform. In particular, the distance between the first and the second assembly position is approximately 1 m to 6 m, preferably 2 m to 5 m, in particular 4 m. The absence of one of the crossbeams allows an assembled platform to be slid into the tower structure, although the height of the platform exceeds the floor height.

Die Erfindung umfasst auch einen Vorwärmturm einer Anlage zur thermischen Bearbeitung von Mineralien mit einer Turmstruktur wie vorangehend beschrieben und einer Mehrzahl von Plattformen, wobei jede Plattform eine Bodenplatte und zumindest einen daran angebrachten Zyklon aufweist und wobei jeweils eine Plattform an einer Montageposition der Turmstruktur angebracht ist. Die Plattform weist beispielsweise zumindest eine Rohrleitung zum Leiten von Material und/ oder Ofenabluft auf. Vorzugsweise bildet jede Plattform im montierten Zustand eine vollständige oder zumindest einen Teil einer Etage des Vorwärmturms aus.The invention also includes a preheating tower of a plant for thermal processing of minerals with a tower structure as described above and a plurality of platforms, each platform having a bottom plate and at least one cyclone attached thereto and wherein each platform is attached to a mounting position of the tower structure. The platform has, for example, at least one pipeline for conducting material and/or furnace exhaust air. When assembled, each platform preferably forms a complete or at least part of a floor of the preheating tower.

Gemäß einer Ausführungsform übersteigt die Höhe der Plattform den vertikalen Abstand zweier benachbarter Montagepositionen der Turmstruktur. Die Plattform weist gemäß einer weiteren Ausführungsform einen Querträger auf, der zwischen den beiden Trägerbalken mit sich über die Länge ändernden Querschnittsprofil angebracht ist. Der Querträger ist vorzugsweise an der Plattform befestigt und wird zusammen mit dieser an der Turmstruktur angebracht.According to one embodiment, the height of the platform exceeds the vertical distance between two adjacent assembly positions of the tower structure. According to a further embodiment, the platform has a cross beam which is attached between the two beams with a cross-sectional profile that changes over the length. The cross member is preferably attached to the platform and attached to the tower structure together with it.

Die Erfindung umfasst auch ein Verfahren zu Errichtung eines Vorwärmturms einer Anlage zur thermischen Bearbeitung von Mineralien wie vorangehend beschrieben aufweisend die Schritte:

  1. a. Errichtung oder Verwendung einer vorangehend beschriebenen Turmstruktur mit einer Mehrzahl von Montagepositionen zum Befestigen von Plattformen, die jeweils zumindest teilweise oder vollständig eine Etage des Vorwärmturms ausbilden,
  2. b. Zusammenbau zumindest einer Plattform unterhalb ihrer Montageposition,
  3. c. Anheben der zusammengebauten Plattform bis zu einer oberen Montageposition,
  4. d. Montieren der Plattform an einer oberen Montageposition, sodass die Plattform eine obere Etage des Vorwärmturms ausbildet,
  5. e. Anheben einer weiteren Plattform bis zu einer Montageposition unterhalb der in Schritt d. montierten Plattform und
  6. f. Montieren der weiteren Plattform an der Montageposition, sodass die weitere Plattform eine weitere Etage des Vorwärmturms ausbildet.
The invention also includes a method for constructing a preheating tower of a plant for the thermal processing of minerals as described above, comprising the steps:
  1. a. Erection or use of a tower structure as described above having a plurality of mounting positions for attachment of platforms, each of which at least partially or completely forms a floor of the preheating tower,
  2. b. assembly of at least one platform below its assembly position,
  3. c. raising the assembled platform to an upper mounting position,
  4. i.e. Assembling the platform at an upper assembly position so that the platform forms an upper floor of the preheating tower,
  5. e. raising another platform to a mounting position below that in step d. mounted platform and
  6. f. Assembling the further platform at the assembly position, so that the further platform forms a further floor of the preheating tower.

Die mit Bezug auf die Turmstruktur und den Vorwärmturm beschriebenen Vorteile und Ausführungen treffen in verfahrensmäßiger Entsprechung auch auf das Verfahren zu Errichtung eines Vorwärmturms einer Anlage zur thermischen Bearbeitung von Mineralien zu. Die Schritte a bis f erfolgen vorzugsweise hintereinander.The advantages and designs described with reference to the tower structure and the preheating tower also apply to the method for erecting a preheating tower of a plant for thermal processing of minerals in a procedural correspondence. Steps a to f are preferably carried out one after the other.

Der Schritt a umfasst vorzugweise das vollständige Errichten der Turmstruktur, sodass eine Montage der Plattformen möglich ist. Unter dem Montieren der Plattform das Verbinden der Plattform mit der Turmstruktur zu verstehen. Die Errichtung der Turmstruktur erfolgt vorzugsweise in Gleitbauweise und/oder in Kletterbauweise aus Beton und/oder in Stahl. Der Aufbau der Plattform gemäß dem Verfahrensschritt (b) erfolgt durch einen Zusammenbau von Profilen aus Stahl und/oder Beton.Step a preferably includes the complete erection of the tower structure so that the platforms can be assembled. Assembling the platform means connecting the platform to the tower structure. The erection of the tower structure is preferably carried out using a slip construction and/or a climbing construction made of concrete and/or steel. The construction of the platform according to method step (b) takes place by assembling profiles made of steel and/or concrete.

Das Anheben der Plattformen bis in ihre jeweilige Einbauposition in der Turmstruktur erfolgt gemäß dem Verfahrensschritt (e) zweckmäßigerweise mittels Litzenheber und/oder Seilzügen und/oder pneumatischen und/oder hydraulischen Hebewerkzeugen. Erfindungsgemäß ist des Weiteren vorgesehen, dass wenigstens drei, vorzugsweise wenigstens vier oder mehr Plattformen in die Gebäudestruktur eingebracht werden. Die Turmstruktur kann dabei mit einer Höhe über dem Boden von wenigstens 50 m, vorzugsweise von wenigstens 80 m und höchstvorzugsweise von wenigstens 100 m errichtet werden.According to method step (e), the platforms are lifted into their respective installation position in the tower structure, expediently by means of strand jacks and/or cable pulls and/or pneumatic and/or hydraulic lifting tools. According to the invention it is further provided that at least three, preferably at least four or more platforms are introduced into the building structure. The tower structure can be erected with a height above the ground of at least 50 m, preferably at least 80 m and most preferably at least 100 m.

Gemäß einer weiteren Ausführungsform erfolgt der insbesondere vollständige Zusammenbau der Plattform auf einem Niveau unterhalb der untersten Montageposition, vorzugsweise auf Bodenniveau. Der Zusammenbau der Plattform erfolgt gemäß einer weiteren Ausführungsform auf Bodenniveau innerhalb der Turmstruktur.According to a further embodiment, the assembly of the platform, in particular complete, takes place at a level below the lowest assembly position, preferably at floor level. According to a further embodiment, the platform is assembled at ground level within the tower structure.

Der wesentliche Unterschied zur bisherigen Praxis bei der Errichtung eines mehrgeschossigen Gebäudeturms besteht darin, dass die einzelnen Plattformen auf einen Niveau unterhalb ihrer Montageposition, insbesondere am Boden bzw. am Boden vorgesehenen Montagebühnen aufgebaut werden und anschließend bis in ihre Einbauposition in der Turmstruktur angehoben werden, wobei die Plattformen beginnend mit einer oberen Plattform bis zur unteren Plattform nach und nach in die Gebäudestruktur eingebracht werden. Da der Aufbau der Plattform im Wesentlichen auf dem Boden erfolgt, ist es möglich, mehrere Plattformen gleichzeitig aufzubauen. Da der Aufbau einer Plattform mehr Zeit benötigt, als deren Einbau verkürzt sich die Montagezeit durch das parallele Arbeiten an mehreren Plattformen erheblich.The main difference from previous practice when erecting a multi-storey building tower is that the individual platforms are set up at a level below their assembly position, in particular on the ground or on the assembly platforms provided on the ground, and then raised into their installation position in the tower structure, with the platforms are gradually introduced into the building structure, starting with an upper platform down to the lower platform. Since the platform is mainly set up on the ground, it is possible to set up several platforms at the same time. Since the construction of a platform takes more time than its installation, the assembly time is significantly reduced by working on several platforms in parallel.

Zur Beschleunigung der Montagezeiten und zur Erleichterung der Errichtung werden die Plattformen zweckmäßigerweise noch während sie sich am Boden befinden mit einer für die jeweilige Plattform vorgesehenen Maschinenausrüstung bestückt. Auch können sie mit der erforderlichen Elektrik und/oder Leittechnik ganz oder teilweise versehen werden. Sind einzelne Maschinenteile mit einer Feuerfestauskleidung zu versehen, können die Plattformen noch während sie sich am Boden befinden, mit einer für die jeweilige Plattform erforderliche Feuerfestauskleidung ganz oder teilweise bestückt werden. Dabei kann die Feuerfestauskleidung lediglich auf der Plattform bereitgestellt werden oder gleich in die entsprechenden Maschinenteile eingebaut werden.In order to speed up assembly times and to facilitate erection, the platforms are expediently equipped with machinery intended for the respective platform while they are still on the ground. They can also be fully or partially equipped with the necessary electrics and/or control technology. If individual machine parts are to be provided with a refractory lining, the platforms can be fully or partially equipped with a refractory lining required for the platform in question while they are still on the ground. The refractory lining can only be provided on the platform or installed directly in the corresponding machine parts.

Die zusammengebaute Plattform wird gemäß einer weiteren Ausführungsform unterhalb der zweiten Montageposition, vorzugsweise unterhalb der ersten Montageposition, seitlich in die Turmstruktur eingeschoben. Unter der ersten Montageposition ist vorzugsweise die Position der ersten Etage des Vorwärmturms zu verstehen, wobei hier die übliche Zählweise von Gebäuden verwendet wird und die erste Etage die unterste Etage oberhalb des Erdgeschosses ist. Optional wird vor dem Einschieben ein Querträger unterhalb der zweiten Montageposition von der Turmstruktur entfernt. Insbesondere wird der zwischen den beiden Trägerbalken mit dem sich über die Höhe änderndem Querschnittsprofil angebrachte Querträger entfernt. Nach der Montage der Plattformen an ihrer jeweiligen Montageposition wird der Querträger vorzugsweise wieder an seiner vorherigen Position angebracht. Beispielsweise wird die Plattform derart zusammengebaut, dass die Höhe der Plattform den Abstand zwischen zwei benachbarten Etagen, insbesondere Montagepositionen, des Vorwärmturms überschreitet.According to a further embodiment, the assembled platform is pushed laterally into the tower structure below the second assembly position, preferably below the first assembly position. The first mounting position is preferably to be understood as the position of the first floor of the preheating tower, the usual way of counting buildings being used here and the first floor being the lowest floor above the ground floor. Optionally, before inserting a Cross members removed from the tower structure below the second mounting position. In particular, the cross member fitted between the two support beams with the cross-sectional profile that changes over the height is removed. After the platforms have been assembled in their respective assembly positions, the crossbeam is preferably reattached to its previous position. For example, the platform is assembled in such a way that the height of the platform exceeds the distance between two adjacent floors, in particular assembly positions, of the preheating tower.

Das Anheben der Plattform erfolgt gemäß einer weiteren Ausführungsform innerhalb der Turmstruktur, vorzugsweise vollständig innerhalb der Turmstruktur und insbesondere nachdem die jeweilige Plattform vollständig innerhalb der Turmstruktur zusammengebaut wurde. Dies hat den Vorteil, dass die Plattform innerhalb der Gebäudestruktur nach oben in ihre Einbauposition angehoben werden kann, wodurch auf eine Vielzahl von außerhalb des Gebäudeturms platzierten Schwerkraftkränen für das Anheben der Plattformen völlig verzichtet werden kann. Die Gebäudestruktur selbst übernimmt daher die Funktion der Kräne. Auch durch diese Maßnahme kann die Montagezeit erheblich verkürzt werden. Darüber hinaus wird die Arbeitssicherheit deutlich verbessert, da die fertigaufgebaute Plattform am Boden lediglich in die Gebäudestruktur eingeschoben werden muss und dann auf geraden Weg nach oben bis in ihre Einbauposition angehoben wird.According to a further embodiment, the platform is raised within the tower structure, preferably completely within the tower structure and in particular after the respective platform has been completely assembled within the tower structure. The advantage of this is that the platform can be lifted up into its installation position within the building structure, which completely eliminates the need for a large number of gravity cranes placed outside the building tower for lifting the platforms. The building structure itself therefore takes over the function of the cranes. This measure can also significantly shorten the assembly time. In addition, occupational safety is significantly improved, as the fully assembled platform on the ground only has to be pushed into the building structure and then lifted straight up into its installation position.

Der Zusammenbau zumindest einer der Plattformen umfasst gemäß einer weiteren Ausführungsform das Montieren von zumindest einem Zyklon auf einer Bodenstruktur.According to a further embodiment, the assembly of at least one of the platforms comprises the mounting of at least one cyclone on a floor structure.

Die Turmstruktur erfolgt gemäß einer weiteren Ausführungsform durch einen Zusammenbau von Profilen aus Stahl oder Beton erfolgt, sodass die Turmstruktur unterhalb der zweiten Montageposition, vorzugsweise unterhalb der ersten oder zweiten Montageposition, eine breitere seitliche Einschuböffnung aufweist als oberhalb der ersten oder zweiten Montageposition.According to a further embodiment, the tower structure is achieved by assembling profiles made of steel or concrete, so that the tower structure has a wider lateral insertion opening below the second assembly position, preferably below the first or second assembly position, than above the first or second assembly position.

Beschreibung der ZeichnungenDescription of the drawings

Die Erfindung ist nachfolgend anhand mehrerer Ausführungsbeispiele mit Bezug auf die beiliegenden Figuren näher erläutert.

Fig. 1
zeigt eine schematische Darstellung eines Vorwärmturms mit einer Mehrzahl vom Plattform gemäß einem Ausführungsbeispiel.
Fig. 2
zeigt eine schematische Darstellung einer Turmstruktur eines Vorwärmturms in einer perspektivischen Ansicht gemäß einem Ausführungsbeispiel.
Fig. 3
zeigt in einer schematischen Darstellung zwei Ausführungsbeispiele einer Turmstruktur in einer Querschnittsansicht.
Fig. 4
zeigt in einer schematischen Darstellung eine Plattform zum Anbringen in einer Turmstruktur gemäß Fig. 3 in einer Seitenansicht gemäß einem Ausführungsbeispiel.
Fig. 5
zeigt eine schematische Darstellung der Plattform der Fig. 4 in einer Draufsicht gemäß eines Ausführungsbeispiels.
The invention is explained in more detail below on the basis of several exemplary embodiments with reference to the accompanying figures.
1
shows a schematic representation of a preheating tower with a plurality of platforms according to an embodiment.
2
shows a schematic representation of a tower structure of a preheating tower in a perspective view according to an embodiment.
3
shows a schematic representation of two exemplary embodiments of a tower structure in a cross-sectional view.
4
shows in a schematic representation a platform for mounting in a tower structure according to FIG 3 in a side view according to an embodiment.
figure 5
shows a schematic representation of the platform 4 in a plan view according to an embodiment.

Fig. 1 zeigt einen Vorwärmturm 10, der beispielsweise Teil einer Anlage zur thermischen Bearbeitung von Materialien ist, wie beispielsweise eine Zementherstellungsanlage. Der Vorwärmturm 10 weist eine Mehrzahl von Zyklonen 28 auf, die zur Trennung von Gas und Material dienen. Beispielhaft sind in Fig. 1 vier Zyklonstufen dargestellt, die von dem Rohmaterial durchlaufen werden. 1 Fig. 1 shows a preheating tower 10 which is, for example, part of a plant for the thermal treatment of materials, such as a cement production plant. The preheating tower 10 has a plurality of cyclones 28 which are used to separate gas and material. Examples are in 1 four cyclone stages are shown through which the raw material passes.

Des Weiteren weist der Vorwärmturm 10 beispielsweise einen Kalzinator 30 auf, der zur Entsäuerung und Vorkalzinierung des Materials dient. In dem Vorwärmturm 10 werden Materialien, wie beispielswiese Kalkstein, Erze, Tone oder anderen mineralischen Produkten im Gegenstrom vorgewärmt und entsäuert, wobei erwärmtes Abgas aus einem Ofen, wie beispielsweise einem Drehrohrofen, von unten in den Vorwärmturm eingeführt wird und eine Mehrzahl von Zyklonen durchläuft. Das zu erwärmende Material wird an dem oberen Ende in den Vorwärmturm 10 aufgegeben und durchläuft die Mehrzahl von Zyklonen im Gegenstrom zu dem Ofenabgas. Die Zyklone 28 und der Kalzinator 30 sind vorzugsweise über Rohrleitungen 34 miteinander verbunden. Am Ofenauslauf 32 weist das Material, insbesondere der gebrannte Zementklinker, eine Temperatur von etwa 1150 - 1450°C, vorzugsweise 1400°C auf.Furthermore, the preheating tower 10 has, for example, a calciner 30, which is used for deacidifying and precalcining the material. In the preheating tower 10, materials such as limestone, ores, clays or other mineral products are preheated and deacidified in countercurrent, with the heated exhaust gas being discharged a kiln, such as a rotary kiln, is introduced into the preheating tower from below and passes through a plurality of cyclones. The material to be heated enters the preheating tower 10 at the top and passes through the plurality of cyclones countercurrent to the furnace off-gas. The cyclones 28 and the calciner 30 are preferably connected to one another via pipelines 34 . At the kiln outlet 32, the material, in particular the burned cement clinker, has a temperature of about 1150-1450°C, preferably 1400°C.

Der Vorwärmturm 10 weist eine Turmstruktur 12 und eine Mehrzahl von Plattformen 14 auf, die an der Turmstruktur 12 angebracht sind. Beispielhaft weist der Vorwärmturm 10 sechs Plattformen 14 auf, die in der Höhe des Turms zueinander beabstandet angeordnet sind. Die Plattformen 14 sind vorzugsweise horizontal und parallel zueinander ausgerichtet und insbesondere im Wesentlichen gleichmäßig zueinander beabstandet. Jede Plattform 14 bildet vorzugsweise eine vollständige oder einen Teil einer Etage des Vorwärmturms 10 aus.The preheating tower 10 includes a tower structure 12 and a plurality of platforms 14 attached to the tower structure 12 . By way of example, the preheating tower 10 has six platforms 14 which are spaced apart from one another at the height of the tower. The platforms 14 are preferably aligned horizontally and parallel to one another and in particular are spaced apart from one another in a substantially uniform manner. Each platform 14 preferably forms all or part of a floor of the preheating tower 10 .

Die unterste Plattform 14 umfasst einen Ofenauslauf 32, durch welchen das heiße Ofenabgas in den Vorwärmturm 10 eintritt und das vorgewärmte Material den Vorwärmturm 10 verlässt und in den Ofen eintritt.The lowermost platform 14 includes a kiln outlet 32 through which the hot kiln off-gas enters the preheat tower 10 and the preheated material exits the preheat tower 10 and enters the kiln.

Fig. 2 zeigt die Turmstruktur 12 des Vorwärmturms 10 ohne Plattformen und Einbauten. Die Turmstruktur 12 weist beispielhaft vier vertikale Trägerbalken 16a-d auf, die sich parallel zueinander erstrecken und die äußeren Strukturkanten der Turmstruktur 12 ausbilden. Die Trägerbalken 16a-d sind über Querträger 18-26 miteinander verbunden. Die Querträger 18-26 erstrecken sich beispielhaft horizontal, im Wesentlichen orthogonal zu den Trägerbalken 16a-d. Es ist ebenfalls denkbar, dass sich die Querträger 18-26 lediglich mit einer teilweise horizontalen Komponente erstrecken. Jeder Querträger 18-26 verbindet jeweils zwei benachbarte Trägerbalken 16a-d miteinander. Die Turmstruktur 12 der Fig. 2 weist beispielhaft auf einem Höhenniveau einer jeweiligen Etage des Vorwärmturms 10 eine Querträgergruppe a-d mit jeweils einer Mehrzahl von Querträgern 18-26a-d auf. Die Turmstruktur 12 weist eine Mehrzahl von Montagepositionen auf, an denen jeweils eine Plattform 14 anbringbar ist. An den Querträgern 18-26 und/ oder den Trägerbalken 16a-d sind vorzugsweise Befestigungsmittel angeordnet zum Befestigen einer jeweiligen Plattform 14 an der Turmstruktur 12 in einer jeweiligen Montageposition. 2 shows the tower structure 12 of the preheating tower 10 without platforms and internals. The tower structure 12 has, for example, four vertical support beams 16a-d, which extend parallel to one another and form the outer structural edges of the tower structure 12. The support beams 16a-d are connected to one another via crossbeams 18-26. The crossbeams 18-26 extend, for example, horizontally, substantially orthogonally to the beams 16a-d. It is also conceivable that the cross members 18-26 only extend with a partially horizontal component. Each cross member 18-26 connects two adjacent beams 16a-d to each other. The tower structure 12 of 2 has, for example, at a height level of a respective floor of the preheating tower 10, a crossbeam group ad each having a plurality of crossbeams 18-26a-d. The tower structure 12 has a plurality of assembly positions, at each of which a platform 14 can be attached. On the crossbeams 18-26 and/or the beams 16a-d are preferably Fastening means arranged to fasten a respective platform 14 to the tower structure 12 in a respective mounting position.

Die Turmstruktur 12 weist seitliche Öffnungen auf, deren Breite durch den Abstand zweier benachbarter Trägerbalken 16a-d begrenzt ist. Die Höhe der jeweiligen Öffnung wird durch den Abstand zweier benachbarter Querträger 16-24, vorzugsweise zweier benachbarter Etagen der Turmstruktur 12, zueinander bestimmt. Die Turmstruktur 12 weist vorzugsweise einen viereckigen Querschnitt auf. Die Trägerbalken 16a-d weisen beispielhaft jeweils ein Winkelprofil auf, das einen gleichschenkligen oder ungleichschenkligen Winkel aufweist. Die Trägerbalken 16a-d sind beispielsweise derart zueinander ausgerichtet, dass, zumindest in dem oberen Bereich der Turmstruktur 12, die Winkelprofile nach außen weisen und jeweils die äußeren Ecken der Turmstruktur 12 ausbilden.The tower structure 12 has lateral openings whose width is limited by the distance between two adjacent support beams 16a-d. The height of the respective opening is determined by the distance between two adjacent crossbeams 16-24, preferably two adjacent floors of the tower structure 12. Tower structure 12 preferably has a square cross-section. The carrier beams 16a-d each have, for example, an angle profile that has an angle with equal or unequal sides. The support beams 16a-d are aligned with one another, for example, in such a way that, at least in the upper area of the tower structure 12, the angle profiles point outwards and form the outer corners of the tower structure 12 in each case.

Beispielhaft weisen zwei Trägerbalken 16c und 16d über ihre gesamte Läge ein konstantes Querschnittsprofil auf, wobei zwei Trägerbalken 16a und 16b ein Querschnittsprofil aufweisen, das sich über die Länge der Trägerbalken 16a und 16b ändert. Fig. 2 zeigt des Weiteren einen Querschnitt der Turmstruktur 12, der in einem Bereich oberhalb der zweiten Etage der Turmstruktur 12 ausgebildet ist. Vorzugsweise weisen alle Trägerbalken 16a-d oberhalb der zweiten Etage der Turmstruktur 12 ein konstantes Querschnittsprofil auf. Des Weiteren weist die Turmstruktur 12 beispielhaft unterhalb der zweiten Etage an einer Seitenfläche der Turmstruktur keinen Querträger auf. An den übrigen Montagepositionen und/oder Etagen der Turmstruktur 12 sind an jeder Seitenfläche jeweils ein Querträger 18-26a-d vorzugsweise auf dem gleichen Höhenniveau angebracht. Die unterste, erste Etage weist beispielhaft lediglich drei Querträger 18b-d auf.For example, two carrier bars 16c and 16d have a constant cross-sectional profile over their entire length, with two carrier bars 16a and 16b having a cross-sectional profile that changes over the length of the carrier bars 16a and 16b. 2 FIG. 12 further shows a cross section of the tower structure 12 formed in a region above the second floor of the tower structure 12. FIG. Preferably, all support beams 16a-d above the second floor of the tower structure 12 have a constant cross-sectional profile. Furthermore, the tower structure 12 does not have a cross member below the second floor on a side surface of the tower structure. At the other assembly positions and/or floors of the tower structure 12, a cross member 18-26a-d is attached to each side surface, preferably at the same height level. The lowest, first floor has, for example, only three crossbeams 18b-d.

Fig. 3 zeigt zwei Ausführungsformen eines Querschnittsprofils der Turmstruktur 12 unterhalb der zweiten Etage. Zwei der Trägerbalken 16a und 16b weisen beispielhaft jeweils ein erstes Querschnittsprofil und ein zweites Querschnittsprofil auf. Das erste Querschnittsprofil ist beispielsweise unterhalb der zweiten Etage und das zweite Querschnittsprofil oberhalb der zweiten Etage der Turmstruktur 12 angeordnet. Das erste und das zweite Querschnittsprofil eines jeweiligen Trägerbalkens 16a-b weisen beispielsweise die gleiche Querschnittsfläche auf. 3 12 shows two embodiments of a cross-sectional profile of the tower structure 12 below the second floor. Two of the support beams 16a and 16b each have, for example, a first cross-sectional profile and a second cross-sectional profile. For example, the first cross-sectional profile is arranged below the second floor and the second cross-sectional profile is arranged above the second floor of the tower structure 12 . That the first and the second cross-sectional profile of a respective support beam 16a-b have, for example, the same cross-sectional area.

Beispielsweise ist das erste Querschnittsprofil als ungleichschenkliges Winkelprofil ausgebildet, wobei beispielhaft der längere der beiden Schenkel nach außen weist und der kürzere Schenkel in Richtung des benachbarten Trägerbalkens 16c oder 16d. In dem zweiten Ausführungsbeispiel der Fig. 3 weist das erste Querschnittsprofil der benachbarten Trägerbalken 16a und 16b jeweils eine rechteckige Querschnittsfläche auf, die beispielsweise einem Schenkel des Winkelprofils oberhalb der zweiten Etage der Turmstruktur 12 entspricht. Das erste Querschnittsprofil der benachbarten Trägerbalken 16a und 16b ist vorzugsweise derart ausgebildet und ausgerichtet, dass der Abstand der benachbarten Trägerbalken 16a und 16 unterhalb der zweiten Etage größer ist als oberhalb der zweiten Etage der Turmstruktur 12. Beispielsweise ist das erste Querschnittsprofil verglichen mit dem zweiten Querschnittsprofil um 90° beispielsweise um die Schenkelspitze gedreht. Das erste Querschnittsprofil geht auf dem Höhenniveau der zweiten Etage in das zweite Querschnittsprofil über, sodass der Abstand zwischen den benachbarten Trägerbalken 16 und 16b oberhalb der zweiten Etage geringer ist als unterhalb der zweiten Etage der Turmstruktur 12. Das zweite Querschnittsprofil der Trägerbalken 16a und 16b ist vorzugsweise als gleichschenkliges Winkelprofil ausgebildet.For example, the first cross-sectional profile is designed as an angle profile with unequal legs, the longer of the two legs pointing outwards and the shorter leg pointing in the direction of the adjacent support beam 16c or 16d. In the second embodiment of the 3 the first cross-sectional profile of the adjacent support beams 16a and 16b each have a rectangular cross-sectional area which corresponds, for example, to a leg of the angle profile above the second floor of the tower structure 12. The first cross-sectional profile of the adjacent support beams 16a and 16b is preferably formed and oriented in such a way that the spacing of the adjacent support beams 16a and 16 is greater below the second floor than above the second floor of the tower structure 12. For example, the first cross-sectional profile is compared to the second cross-sectional profile rotated 90° around the tip of the leg, for example. The first cross-sectional profile merges into the second cross-sectional profile at the level of the second floor, so that the distance between the adjacent girders 16 and 16b above the second floor is smaller than below the second floor of the tower structure 12. The second cross-sectional profile of the girders 16a and 16b is preferably designed as an isosceles angle profile.

Fig. 3 zeigt lediglich zwei Beispiele von Querschnittsprofilen der Trägerbalken 16 unterhalb der zweiten Etage der Turmstruktur 12, wobei weitere Ausführungsformen denkbar sind, in denen das untere Querschnittsprofil zweier benachbarter Trägerbalken 16a und 16b derart ausgebildet und ausgerichtet ist, dass der Abstand der Trägerbalken 16a und 16b zueinander größer ist als oberhalb der zweiten Etage. 3 shows only two examples of cross-sectional profiles of the support beams 16 below the second floor of the tower structure 12, further embodiments being conceivable in which the lower cross-sectional profile of two adjacent support beams 16a and 16b is designed and aligned in such a way that the distance between the support beams 16a and 16b is greater is than above the second floor.

Fig. 4 zeigt eine Plattform 14 zum Anbringen an die Turmstruktur 12. Die Plattform 14 umfasst beispielhaft eine Bodenplatte 36, die beispielsweise als Gitterboden oder aus einer Mehrzahl von Bodenplanken ausgebildet ist. Die Bodenplatte 36 weist vorzugsweise eine oder eine Mehrzahl von Öffnungen auf, in welchen Komponenten zur Materialbearbeitung angebracht sind oder durch welche die Beispielsweise Rohrleitungen oder Zyklone anderer Plattformen 14 erstrecken. Die Plattform 14 umfasst des Weiteren vorzugsweise Komponenten zur Bearbeitung oder zum Transport von Material oder Luft, wie beispielweise ein Zyklon 28 oder eine Mehrzahl von Rohrleitungen 34, die Material zu in oder aus dem Zyklon 28 leiten. Vorzugsweise weist die Plattform 14 mindestens einen Zyklon 28 und eine Bodenplatte 36 auf, wobei der Zyklon 28 an der Bodenplatte 36 befestigt ist. 4 14 shows a platform 14 for attachment to the tower structure 12. The platform 14 comprises, for example, a floor panel 36 which is designed, for example, as a grid floor or from a plurality of floor planks. The base plate 36 preferably has one or a plurality of openings, in which components for material processing are mounted or through which, for example, pipes or cyclones of other platforms 14 extend. The platform 14 further preferably includes components for processing or transporting material or air, such as a cyclone 28 or a plurality of ducts 34 that direct material to or from the cyclone 28. Preferably, the platform 14 includes at least one cyclone 28 and a bottom plate 36, with the cyclone 28 being attached to the bottom plate 36.

Fig. 4 zeigt beispielhaft zusätzlich das obere Ende des Kalzinators 30, wobei die Anordnung des Zyklons 28 und des Teils des Kalzinators 30 ebenfalls in Fig. 5 dargestellt ist. Fig. 5 zeigt die Plattform 14 der Fig. 4 in einer Draufsicht. 4 shows an example of the upper end of the calciner 30, the arrangement of the cyclone 28 and the part of the calciner 30 also in figure 5 is shown. figure 5 shows the platform 14 of 4 in a top view.

Bei der Errichtung des Vorwärmturms 10 wird zumindest eine oder eine Mehrzahl von Plattformen 14 beispielsweise gemäß Fig. 4 und 5 zusammengebaut, sodass Zyklone 28, Rohrleitungen 34, Kalzinator 30 und/ oder Ofenauslauf 32 an einer Bodenplatte 36 angebracht sind. Der Zusammenbau der Plattformen 14 erfolgt beispielsweise außerhalb der Turmstruktur 12, wobei beispielsweise eine Mehrzahl von Plattformen 14 gleichzeitig zusammengebaut wird. Die Plattformen 14 werden anschließend nacheinander seitlich in die Turmstruktur 12 unterhalb der zweiten Etage eingeschoben. Vorzugsweise werden die Plattformen 14 jeweils zwischen den Trägerbalken 16a und 16b mit dem veränderten Querschnittsprofil hindurch in die Turmstruktur 12 eingeschoben, da die Öffnung zwischen diesen Trägerbalken 16a und 16b größer ist als zwischen den übrigen Trägerbalken 16 und insbesondere im Wesentlichen der Breite der Plattform 14 entspricht. Die Höhe der zusammengebauten Plattformen mit Zyklonen 28, Rohrleitungen 34, Kalzinator 30 und/ oder Ofenauslauf 32 übersteigt insbesondere die Etagenhöhe einer Etage des Vorwärmturms 10, vorzugsweise den vertikalen Abstand zweier benachbarter Montagepositionen der Turmstruktur 12.In the construction of the preheating tower 10, at least one or a plurality of platforms 14, for example, according to 4 and 5 assembled so that cyclones 28, pipes 34, calciner 30 and/or kiln outlet 32 are attached to a base plate 36. The platforms 14 are assembled, for example, outside of the tower structure 12, for example a plurality of platforms 14 being assembled at the same time. The platforms 14 are then successively pushed laterally into the tower structure 12 below the second floor. The platforms 14 are preferably pushed into the tower structure 12 between the support beams 16a and 16b with the changed cross-sectional profile, since the opening between these support beams 16a and 16b is larger than between the other support beams 16 and, in particular, essentially corresponds to the width of the platform 14 . The height of the assembled platforms with cyclones 28, pipelines 34, calciner 30 and/or kiln outlet 32 exceeds in particular the floor height of one floor of the preheating tower 10, preferably the vertical distance between two adjacent assembly positions of the tower structure 12.

Die erste der Mehrzahl von Plattformen 14 wird innerhalb der Turmstruktur 14 vorzugsweise mittels einer Hebevorrichtung, wie beispielsweise einem Seilzug, bis zu einer oberen, insbesondere der obersten, Montageposition angehoben und an dieser befestigt, sodass die erste Plattform vorzugsweise ein oberes oder das oberste Stockwerk des Vorwärmturms 10 ausbildet. Im Folgenden werden nach und nach weitere Plattformen 14 auf die gleiche Weise in die Turmstruktur 12 eingeschoben und bis zu der jeweiligen Montageposition angehoben, wobei die folgenden Montagepositionen unterhalb der ersten Montageposition angeordnet sind und die Reihenfolge der Montage der Plattformen 14 an der Turmstruktur 12 von oben nach unten erfolgt.The first of the plurality of platforms 14 is raised within the tower structure 14, preferably by means of a lifting device, such as a cable winch, to an upper, in particular the uppermost, assembly position and attached to it, so that the first platform is preferably an upper or the top floor of the Preheating tower 10 forms. In the following, further platforms 14 are gradually pushed into the tower structure 12 in the same way and raised up to the respective assembly position, with the following Mounting positions are arranged below the first mounting position and the order of mounting the platforms 14 on the tower structure 12 is from top to bottom.

Es ist ebenfalls denkbar, dass jeweils eine Plattform 14 innerhalb der Turmstruktur 12 auf Bodenniveau zusammengebaut wird und anschließend wie vorangehend beschrieben bis zu der jeweiligen Montageposition angehoben und dort befestigt wird. Anschließend wird eine weitere Plattform auf Bodenniveau innerhalb der Turmstruktur 12 zusammengebaut und an einer Montageposition unterhalb der vorangegangenen Montageposition befestigt.It is also conceivable that in each case one platform 14 is assembled within the tower structure 12 at ground level and then raised to the respective assembly position and fastened there, as described above. Another platform is then assembled at ground level within the tower structure 12 and secured at a mounting location below the previous mounting location.

Bezugszeichenlistereference list

1010
Vorwärmturmpreheating tower
1212
Turmstrukturtower structure
1414
Plattformplatform
1616
Trägerbalkensupport beam
18 -2618 -26
Querträgercross member
2828
Zykloncyclone
3030
Kalzinatorcalciner
3232
Ofenauslaufoven outlet
3434
Rohrleitungenpiping
3636
Bodenplattebottom plate

Claims (13)

  1. Tower structure (12) of a pre-heating tower (10) of a plant for thermally processing minerals, having a plurality of support beams (16), which extend vertically and parallel to one another and are connected to one another via cross beams (18-26),
    a plurality of mounting positions, in each case for fitting a platform (14) to the tower structure (12), characterized in that
    the cross-sectional profile of at least two of the support beams (16) changes over the height of the tower structure (12), wherein at least two support beams (16) each have a first and a second cross-sectional profile, and wherein the first cross-sectional profile is formed at the bottom end region of the support beam (16), and wherein the first cross-sectional profile of two adjacent support beams (16) is formed in such a way that the distance between the support beams (16) is greater below the first or second mounting position than above it.
  2. Tower structure (12) according to Claim 1, wherein the first cross-sectional profile is formed below a first or second mounting position for fitting a platform (14) to the tower structure (12).
  3. Tower structure (12) according to either of the preceding claims, wherein a dismountable cross beam (18-26) or no cross beam (18-26) is fitted below the second mounting position between the support beams (16) with a cross-sectional profile which changes over the length.
  4. Pre-heating tower (10) of a plant for thermally processing minerals, having a tower structure (12) according to one of Claims 1 to 3 and having a plurality of platforms (14), wherein each platform (14) has a base plate (36) and at least one cyclone (28) fitted thereon, and wherein in each case one platform (14) is fitted at a mounting position of the tower structure (12).
  5. Pre-heating tower (10) according to Claim 4, wherein the height of the platform (14) exceeds the vertical distance between two adjacent mounting positions of the tower structure (12).
  6. Pre-heating tower according to Claim 5, wherein the platform (14) has a cross beam (18-26) which is fitted between the two support beams (16a-b) with a cross-sectional profile which changes over the length.
  7. Method for erecting a pre-heating tower (10) according one of Claims 4 to 6 of a plant for thermally processing minerals, comprising the steps of:
    a. erecting or using a tower structure (12) according to one of Claims 1 to 3 having a plurality of mounting positions for the fastening of platforms (14), each of which at least partially or completely forms a floor of the pre-heating tower (10),
    b. assembling at least one platform (14) below its mounting position,
    c. raising the assembled platform (14) as far as an upper mounting position,
    d. mounting the platform (14) at an upper mounting position so that the platform (14) forms an upper floor of the pre-heating tower (10),
    e. raising a further platform (14) as far as a mounting position below the platform (14) mounted in step d., and
    f. mounting the further platform (14) at the mounting position so that the further platform (14) forms a further floor of the pre-heating tower (10).
  8. Method according to Claim 7, wherein the assembly of the platform (14) is realized at a level below the lowermost mounting position, preferably at base level.
  9. Method according to either of Claims 7 and 8, wherein the assembly of the platform (14) is realized at base level within the tower structure (12) .
  10. Method according to one of Claims 7 to 9, wherein the assembled platform (14) is pushed laterally into the tower structure (12) below the second mounting position, preferably below the first mounting position.
  11. Method according to one of Claims 7 to 10, wherein the raising of the platform (14) is realized within the tower structure (12).
  12. Method according to one of Claims 7 to 11, wherein the assembly of at least one of the platforms (14) comprises the mounting of at least one cyclone (28) on a base plate (36).
  13. Method according to one of Claims 7 to 12, wherein the tower structure (12) is realized by an assembly of profiles (16-26) composed of steel or concrete so that the tower structure (12) has a wider lateral push-in opening below the second mounting position, preferably below the first or second mounting position, than above the first or second mounting position.
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EP3918262A1 (en) 2021-12-08

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