EP2445638B1 - Broyeur à rouleaux transportable et installation de broyage transportable - Google Patents

Broyeur à rouleaux transportable et installation de broyage transportable Download PDF

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Publication number
EP2445638B1
EP2445638B1 EP10793147.9A EP10793147A EP2445638B1 EP 2445638 B1 EP2445638 B1 EP 2445638B1 EP 10793147 A EP10793147 A EP 10793147A EP 2445638 B1 EP2445638 B1 EP 2445638B1
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EP
European Patent Office
Prior art keywords
grinding
container
mill
transportable
roller
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.)
Not-in-force
Application number
EP10793147.9A
Other languages
German (de)
English (en)
Other versions
EP2445638A1 (fr
Inventor
Matthias Authenrieth
Christian Barczus
Jörg BETTENWORTH
Nigel Hendy
Wilhelm Kulagin
Holger Wulfert
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Loesche GmbH
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Loesche GmbH
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Filing date
Publication date
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Priority to PL10793147T priority Critical patent/PL2445638T3/pl
Publication of EP2445638A1 publication Critical patent/EP2445638A1/fr
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Publication of EP2445638B1 publication Critical patent/EP2445638B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/006—Ring or disc drive gear arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C19/186—Use of cold or heat for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B02C21/02—Transportable disintegrating plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a transportable roller mill for the comminution of solids, in particular of solid fuels.
  • Generic Wälzmühlen eg DE 3134601 C2 or DE 4202784 C2 , Have a mill housing, a grinding bowl, at least two grinding rollers, at least two rocker arm units, a grinding bowl drive, a transmission for the grinding bowl and a transmission housing. These components of a mill are also referred to as a mill assembly.
  • the at least two grinding rollers roll frictionally with the ground material on the grinding bowl or on the grinding table.
  • the material to be crushed forms a Mahlgutbett on the grinding bowl.
  • the grinding rollers as well as the mashing tables are arranged in the mill housing, wherein each grinding roller is associated with a rocker arm unit for storage, force application to the material to be ground and for swiveling.
  • the invention relates to a portable grinding plant for the comminution of solids, which has the rolling mill according to the invention.
  • coal In contrast to precious energy sources, for example, coal must first be treated to a greater extent.
  • lignite processing plants there are three large lignite processing plants in Germany for this purpose. In these processing plants, pre-dried lignite or lignite with low humidities is dried and ground to dust, which has better combustion properties and thus offers a higher energy yield. These brown coal preparation plants are used for dust production.
  • the plants are dimensioned so that they reach a brown coal throughput of about 50 to 90 tons per hour. Further processing of the produced dust takes place partly on site.
  • a transport of the dust in special vehicles within a radius of 1,000 km is made. This dust is delivered there to consumers who use the dust, for example in the context of asphalt mixing plants for the production of road surface or for generating steam for electricity generators.
  • the lignite mining plants used in Germany have a height of about 70 m. Although this achieves a high throughput, it is already not possible here to directly consume the produced dust, but it must, as mentioned, be distributed in special vehicles to other consumers. In this respect, there is the desire of the customers of the dust, this if possible to produce directly on site, in order to save the complex dust transport can. However, it should then be taken into account that consumers themselves only require smaller amounts of dust, so that the systems used there must be much smaller.
  • the invention has for its object to provide a roller mill and a grinding plant for the comminution of solid fuels, which is easy and effective to transport and install.
  • the object is achieved by a roller mill with the features of claim 1 and a grinding plant with the features of claim 11.
  • a generic roller mill is further formed such that the mill assembly is arranged both for transport and for operation in a container. Furthermore, the rocker arm units are each articulated on the mill housing. From the articulation of the rocker arm units props extend to the bottom and / or support frame of the container. Between the container floor and / or the container support frame and the supports vibration damper are provided.
  • a basic idea of the invention can be seen in arranging a roller mill, in particular the mill assembly of the roller mill, in a container.
  • the mill assembly should be arranged not only for transport in this container, but also during operation. This makes it possible to deliver the mill assembly of the roller mill in a container, to place the container with a customer of coal dust and to take it into operation directly in the container.
  • the invention is further based on the finding that it is not possible to take known mill assemblies in a container into operation. On the one hand, it has to be taken into account that only a limited space is available within the container. On the other hand, it is necessary to deviate from the conventional construction method with solid concrete foundations for the mill, since this is incompatible with operation within a container. But since there are no foundations for the derivation of the resulting during the grinding process forces, these forces must be derived or collected in other ways.
  • supports extend from the articulation of the rocker arm to the container floor and / or container support frame. Between the container floor or the container support frame and the supports vibration dampers are mounted. As a result, vibrations and vibrations that occur during the grinding process on the rollers or their rocker arms, not or only in very limited dimensions on the container itself.
  • container support frame the inner frame structure that carries the wall of the container.
  • the supports are connected in their upper region with the mill housing and in its lower region with the transmission housing.
  • a mill stand is used for partially receiving and carrying the grinding bowl.
  • the forces which act on the rolling mill on the grinding bed on the rotating grinding bowl derived in the foundation in generic roller mills.
  • the mill stand carries the essential weight of the mill housing and a possibly above a grinding chamber arranged classifier.
  • the weight of the grinding rollers and their oscillating lever units and the forces that are absorbed by these are derived by separate roll stand in another foundation, which is usually different to the foundation of the mill stand.
  • the transmission can be arranged for the grinding bowl.
  • the grinding bowl is driven by rotation.
  • a mill gear is provided.
  • the mill gear can be arranged below the grinding bowl.
  • An optional attachment of the mill drive, directly on the gear housing, makes it easier to form the roller mill so that it transmits no or very little vibration and forces on the container.
  • the mill assembly is carried by the supports, and that a clearance is provided between the transmission housing and the container floor and / or the container support frame.
  • the central idea here is that the complete mill assembly is supported by the supports, in particular exclusively by the supports. As described, the supports are mounted vibration-damping on the container floor and / or the container support frame.
  • the transmission housing has a distance from the container floor and / or the container support frame.
  • the mill housing itself can be designed as desired. It can be made, for example, from steel sheets or the like.
  • a transportable roller mill it is advantageous if the mill housing is cast. This can be achieved in a simple and cost-effective manner that standardized, nearly standard produced mill housing are designed as identical as possible.
  • a transportable roller mill can be further developed in that two oppositely arranged grinding rollers form a pair of grinding rollers. If this pair of grinding rollers hydraulically coupled with each other, can be achieved that transferred to the mill itself less vibration, which on the one hand a quieter running of the mill is achieved, which requires an increased throughput at lower energy costs. On the other hand, this in turn is an adaptation to the operation in a container, since it is not possible when operating in a container to divert forces into a foundation in the ground.
  • the hydraulic coupling may be implemented, for example, by means of at least one hydraulic suspension cylinder, which is articulated in each case to arms which are each fastened to a shaft of the rocker arm units.
  • Such a construction can also be carried out in confined space within a container when the hydraulic suspension cylinder extends directly between the respective arms.
  • the suspension cylinder is not mounted directly on the rocker arm units, but on arms which are fixed to the shaft of the rocker arm units, it is possible, the suspension cylinder outside provide the actual grinding chamber or the inner housing so that it is easier to access on the one hand for maintenance purposes and on the other hand is not located in the interior of the mill housing and therefore does not need to be specially sealed.
  • two hydraulic suspension cylinders are provided.
  • two arms can be mounted on a shaft of the rocker arm units in each case. Between each arm opposite a hydraulic suspension cylinder can be provided in each case.
  • the arms may be fixed to the shafts such that the two hydraulic suspension cylinders are arranged on two different sides of the mill housing.
  • roller pressure is understood as meaning, for example, the pressure with which the rollers press on the grinding bed of ground material.
  • the roller pressure can be adjusted for example via the at least one hydraulic suspension cylinder for coupling the two grinding rollers.
  • appropriate facilities for the provision of hydraulic fluid and for controlling the hydraulic suspension cylinder can be provided in a container.
  • At least one hydraulic suspension cylinder for swinging out a grinding roller directly or indirectly between an arm which is fixed to a shaft of a rocker arm unit, and one of the supports is attachable.
  • this hydraulic suspension cylinder By means of this hydraulic suspension cylinder, the roller can be swung out to an intermediate position of the mill housing.
  • the hydraulic suspension cylinder can in this case be controlled by provided in the container external hydraulic control devices. It is then possible, for example, to completely remove the grinding roller from the mill by means of a lifting tool provided in the container.
  • the vibration absorbers of the supports are in turn used to little or no To transmit vibrations and vibrations to the container or its support frame itself.
  • the suspension cylinder for swinging a grinding roller can be used as a spare part. This is particularly advantageous since it is envisaged to deploy the transportable roller mill not only in well-industrialized areas such as Europe, where sufficient infrastructure is available.
  • the roller mill is also suitable for use in emerging or developing countries, where the general infrastructure is often rudimentary.
  • the grinding assemblies of a roller mill are usually used together with a classifier for the classification of the ground material. It is therefore advantageous if a separator for the roller mill is provided in a further container and the separator is placed on the mill housing and designed to be fastened thereto. In this case, the sifter can be largely in operation in the other container during operation. Due to the structural height of Wälzmühlen it is difficult to arrange them in a container. Therefore, a second container is provided, in which the classifier is arranged. The container with the base or mill assembly of the roller mill and the other container with the separator for the roller mill can be transported separately. When setting up the roller mill, the container is placed with the separator for the roller mill on the first container in which the mill assembly of the roller mill is located.
  • flange connections can be used.
  • the container and the sifter is designed such that the sifter in operation can largely remain in the other container.
  • the separator is placed on the mill housing for the operation of the roller mill.
  • the classifier is arranged in a raised position for a transport position in the further container.
  • the sifter is secured by transport claws in the other container. The transport claws are attachable between the sifter and the container.
  • a hoist for example, on the upper support frame of the container, a hoist, so that the classifier from the operating position in which he sits on the mill housing, can be pulled up into his container. So that the sifter does not merely hang on the hoist during transport and possibly executes a pendulum movement, securing claws are provided which can be fastened between the sifter and the container floor or its supporting floor. As a result, a safe storage of the classifier is made possible during transport, the Sich ceremoniesspratzen for commissioning the classifier can be easily removed.
  • transport claws Another advantage of the use of transport claws is that they can be re-attached if the transportable roller mill is to be dismantled and set up in another location and put into operation.
  • the invention further relates to a portable grinding plant for the comminution of solids, in particular of solid fuels.
  • the portable grinding plant has at least one transportable roller mill with a mill assembly and a sifter, a hot gas generator, a dust filter, a dust dosing device as well as solid storage devices, solids feed devices and solids processing devices.
  • transportable grinding system or transportable roller mill can be understood to mean that the grinding system and the roller mill are easy and easy to transport.
  • the term portable may also be considered mobile or non-stationary. It is essential for this that the grinding plant and the roller mill can be dismantled without much effort compared to conventional grinding and rolling mills, can be transported to a new location and there rebuilt and put into operation.
  • the grinding plant can be used for the comminution of solid fuels, for example coal such as lignite or hard coal.
  • the raw coal is introduced into the solid storage facilities, for example by means of a front loader.
  • the solid storage devices can be designed, for example, as a raw coal bunker, which already allow a metered delivery of the raw coal.
  • From the solid storage facilities lead solid feeders the raw material, such as the raw coal to the roller mill.
  • the solid feed devices can be designed as conveyor belts, vertical conveyors or, for example, also as screw conveyors. During transport of the raw coal from the solids storage facilities to the roller mill, the raw coal can be pre-processed by solids processing facilities.
  • the raw material can be fed to a crusher so as to reduce the feed size to the roller mill. It is also possible to provide metal detectors, magnetic separators and / or two-way separators in order to separate out foreign substances from the raw material, for example the raw coal.
  • the mill fed raw material is ground in the mill and classified in a classifier.
  • millbase which has a desired particle size, further promoted, other millbase is passed back to the mill to be ground there again.
  • the desired, small ground millbase is referred to in this application as dust.
  • the dust can be passed through a stream of air to a dust filter where the dust is separated.
  • the separated dust is then fed to a dust dosing device.
  • the hot gas generator In order to dry the raw material, for example the raw coal, during the milling process, the hot gas generator is provided, which can also be operated with a portion of the generated dust. It generates a hot process gas, which can be used in the mill for drying and for other process engineering procedures. From the dust dosing device, the dust is then passed on to the customer, for example, directly by means of pipelines.
  • the customer can the dust, for example, in asphalt mixing plants for the production of road surface, for a steam generator for operating a steam turbine for Power generation, for a hot gas generator for the production of hot gases or for general dry processes use.
  • the dust filter and the dust dosing device for transport and operation in one or more containers are arranged and that at least a majority of the solids storage facilities, the solids supply facilities and the solids processing device for operation in one or more other containers are arranged.
  • the solids supply means may be provided between the individual containers to transport the solids from one facility of the grinding plant to another.
  • conduits for process gases with or without dust may extend between the individual containers.
  • the containers used are designed as ISO container with twenty and / or forty feet.
  • the container can have standard height or be designed as a high-cube container.
  • ISO containers represent a logistics standard. This ensures that a transport of the portable grinding plant is simplified, since standard supports for trailers and fasteners for these containers already exist and need not be brought to the field.
  • the container closable openings for performing solid feed, Mahlguttransport effeten, process gas lines and / or for parts of the grinding plant offer the advantage that the containers are substantially weather-resistant during transport so that the assemblies and components stored in them can be transported protected. After setting up or when setting up the container for the portable grinding plant, the openings are opened so that components or Mahlguttransport effet can be passed through the openings and so the flow of ground raw material as well as the already ground raw material between the containers is made possible to the individual modules , As already explained in connection with the sifter and the grinding assembly, it is also possible to provide individual assemblies that extend over several containers.
  • the individual modules or components of the portable grinding system can be arranged in any suitable containers. It has been found to be advantageous when the mill assembly and the hot generator are placed in operation in a first 40 foot container, and parts of the classifier and electrical and hydraulic equipment for the portable mill are also operating in a second 40 foot container.
  • the raw material bunker may be configured as a first 20 foot high cube container and the dust filter may be located in operation in a second 20 foot high cube container.
  • a raw material crusher and other solid feeders may be disposed in a first 20 foot container and at least portions of the dust dosing means in a second 20 foot container.
  • the division into the described container is therefore expedient, as must exist between individual modules direct connections, such as between the mill assembly and the hot gas generator. It is advantageous to arrange these connections within a container. On the other hand, there are advantages in arranging assemblies that produce a lot of dirt, such as the crusher or the raw material bunker, in a separate container, so that the other assemblies are not unnecessarily polluted and impaired.
  • the high-cube container in which the dust filter is provided is used high in operation to be able to place the dust filter in operation therein as well.
  • the path of the hot gas is very short. Depending on the hot gas generator used, this can lead to an uneven temperature profile with hot gas strands being present at the mill inlet. Therefore, it is advantageous to provide baffle plates in the path of the hot gas between the roller mill and the hot gas generator, which lead to a homogenization of the temperature profile.
  • one or more flow crosses may be provided to destroy swirls in the hot gas.
  • the container with the classifier on the container with the mill assembly.
  • the crushercontainer can also be the hydraulic station for the roller mill.
  • the memory for the hydraulic pressure or the hydraulic fluid itself can be accommodated in the mill container.
  • lines with quick coupling are used to connect the hydraulic station separably to the reservoirs.
  • Ball valves can be used for the lines between the hydraulic cabinet and spring cylinders, which can optionally be interrogated electrically.
  • a mill assembly 2 of a roller mill 1 according to the invention is shown in two different lateral views.
  • the grinding rollers 5 are indicated by the dashed lines.
  • the mill assembly 2 has a mill housing 3 and a transmission housing 9.
  • the grinding rollers 5 are held by swing lever units 6.
  • the rocker arm units 6 in turn have a shaft 16 on, which is rotatably mounted on the mill housing 3. This makes it possible to pivot the grinding rollers 5.
  • the grinding chamber is closed at the bottom by the not-indicated grinding bowl 4, which is also referred to as a grinding table.
  • a grinding bed is formed from material to be ground, on which the grinding rollers 5 roll. For this purpose, the grinding bowl 4 is driven rotatively.
  • a grinding bowl drive 7 is provided, which can be designed, for example, as an electric motor or geared motor.
  • the grinding bowl 4 is rotatably mounted on the gear housing 9 so that it can be rotated by a gear 8 in rotation.
  • the rocker arm units 6 are rotatably mounted on the mill housing 4 via the shaft 16.
  • large conventional roller mills for coal grinding separate rocker arm stands are provided.
  • the roller mill 1 Since in the container in which the mill assembly 2 of the roller mill 1 is arranged, also other other modules are located, and Containers on the container with the mill assembly 2 of the roller mill can be arranged, it should be avoided that the container is set in vibration or vibration. Therefore, the roller mill 1 is designed such that its entire weight is supported by the supports 11, which form the only contact points via the vibration dampers 13 with the container or its support frame 12. For this reason, the transmission housing 9 is also suspended from the supports 11 via transverse supports 18 or fastened thereto.
  • Fig. 3 is a section through the mill assembly 2 of the inventive roller mill 1 shown.
  • the grinding rollers 5 are indicated again.
  • the grinding rollers 5 are rotatably mounted in the respective rocking lever units 6.
  • the oscillating lever units 6 in turn have a shaft 16. To this shaft 16, the rocker arm units 6 can be pivoted.
  • the advantageous stator structure of the mill assembly 2 of the roller mill 1 according to the invention is explained below.
  • the supports 11 have transverse supports 18. On the lateral transverse supports 18, in turn, the transmission housing 9, in which the mill gear 8 is integrated, attached. Thus, the weight of the transmission housing 9 is passed over the transverse supports 18 on the supports 11.
  • the grinding bowl 4 is provided on the transmission 8.
  • the supports 11 are fixed to the housing 3 of the rolling mill assembly 2. Essentially in an imaginary extension of the supports 11 is the axis 16 of the rocker arm units. 6
  • the vibration dampers 13 are preferably designed such that they allow a good damping in the vibration resonance range of the mill.
  • various transport locks for the mill assembly 2 can be provided.
  • the grinding rollers 5 can be contracted for transport with straps or threaded rods. These can then be pressed against the stop buffer or on the grinding table.
  • Fig. 4 shows a side view of the mill assembly 2 of the inventive roller mill 1 with partially swung-out grinding roller.
  • Fig. 5 again shows a side view of the mill assembly 2, in which the grinding roller 5 is further swung.
  • the two opposing rollers 5 form a coupled grinding roller pair.
  • the coupling is made possible by two hydraulic suspension cylinders 21.
  • the pressure of the suspension cylinder 21 via a hydraulic control unit is adjustable.
  • a Ausschwenkvorgang be realized for a paint roller 5, for example, to replace them.
  • a second arm 26 can be attached to the arm 25.
  • the second suspension cylinder 22 which may also be designed hydraulically, extends to a detachable attachment 27 in the lower region of a support 11. It is advantageous if the suspension cylinder 22 is again attached to the roller mill 1 above the vibration damper because otherwise unwanted vibrations and vibrations can be transferred to the container.
  • the suspension cylinder 21 are first released from its attachment to the arm 25. You can then be placed in designated mounts on the mill housing 3.
  • the arm 25 and thus the rocker arm unit 6 can be pivoted to the rear to an intermediate position. If the grinding roller 5 is swung to the intermediate position, it can for example be hung in a hoist of a hoist, which is provided in the ceiling area or on the ceiling beams of the container. Subsequently, the suspension cylinder 22 can be removed, so that the grinding roller 5 can be completely swung out, as in Fig. 5 is shown. Now, the grinding roller 5 can be removed with the help of the hoist from its holder and a new grinding roller 5 are installed.
  • the suspension cylinder 21 and the suspension cylinder 22 may be of identical design, whereby the spare parts inventory is simplified.
  • the suspension cylinder 22 can also be used as a replacement cylinder for the suspension cylinder 21. Since the suspension cylinder 22 is used and grown only for Ausschwenkvorgang the rollers, it can normally be stored, for example in a hydraulic cabinet. If one of the suspension cylinders 21 now has a malfunction, then it is possible to use the suspension cylinder 22, which is not used in normal operation, as a replacement for the defective suspension cylinder 21.
  • Fig. 6 the roller mill 1 according to the invention is shown in the operating state.
  • a classifier 31 is applied to the mill assembly 2 and attached to this or the mill housing 3.
  • the mill assembly 2 is in a separate container. From this container, a ceiling portion 33 and a bottom portion 34 is shown.
  • the sifter 31 in turn is provided in a further container, of which also a ceiling area 35 and a floor area 36 are shown.
  • the classifier 31 can be placed on the mill housing and secured thereto. This can be done for example by flange-type fittings or positive and / or non-positive fastenings.
  • Fig. 7 the transport position of the classifier 31 is clarified.
  • the sifter 31 of the in Fig. 6 to transfer shown operating position in the transport position, the sifter is raised. This can be done for example via a lifting device attached to the ceiling 35 of the classifier container, such as a hoist or the like.
  • transport claws 41 are placed between the sifter 31 and the bottom of the container or its support structure, which stabilize the sifter and at least partially carry it as a weight.
  • the classifier container which stands on the container with the mill assembly, can be lifted off this.
  • the openings in the ceiling 33 of the container are closed with the mill group and in the bottom 36 of the container with the classifier 31, so that the assemblies located in the containers are protected during transport.
  • the sifter rotor which is not shown, during transport, it may be appropriate to support and secure the rotor by means of an auxiliary structure introduced from below into the raised sifter 31.
  • FIGS. 8 to 10 different modes of operation of a grinding system according to the invention are shown.
  • Fig. 8 is a process flow diagram for the operation of a grinding plant 100 according to the invention shown in air operation. In the following, the mode of operation and the individual modules are discussed in more detail.
  • coal is ground as a solid fuel.
  • solid storage 104 two raw coal bunkers 111 are used. In this the purchased or subsidized raw coal is abandoned by means of a front loader.
  • the raw coal should have a maximum particle size of 250 mm.
  • the solids storage device 104 can also be designed as a feed bunker. This can have two task units with two discharge belts and a hydraulically operated oversize sieve and be designed as a 20 foot high-cube container. Filling funnels can be unfolded on the top of the container after transport. Then the raw coal is over Solid transport means 105 conveyed in the form of conveyor belts 112 to a crusher 114. This crusher 114 is an example of a solids processing device 106.
  • the raw coal is broken down, for example, to a maximum grain size of approximately 30 mm.
  • the raw coal of the roller mill 1 according to the invention is supplied via further conveyor belts 112.
  • the crushed raw coal is examined for foreign materials, in particular metal. This can be done for example by means of a magnetic separator 115 or in conjunction with a metal detector 119 and a Zweiwegeabscheider 120.
  • a vertical conveyor 117 can also be used.
  • the broken raw coal is transported after the metal discharge into the inlet of the roller mill 1. This takes place for example via a rotary valve 121 and an entry screw 122. In the roller mill, the raw coal is ground to a fineness of 5% to 45% R to 90 ⁇ m and dried.
  • the coal dust after being classified in the classifier 31 of the roller mill 1, passes into a dust filter 102. There, the coal dust is separated.
  • the dust filter 102 may include a rotary valve. From the dust filter 102, the dust passes into a Staubdos réelles Anlagen 103, from which it can be supplied to the consumer. Between the dust filter 102 and the Staubdos réelles Rheins Rhein 103 may still be provided an intermediate bunker. However, the intermediate bunker can also be embodied integrated in the dust-dosing device 103.
  • the Staubdosier sensible 103 is advantageously designed to supply multiple consumers from a metering device.
  • hot process gas is produced by means of the hot gas generator 101, which is fed to the roller mill 1 for operation and drying of the broken raw coal.
  • the hot gas generator itself can be operated by means of liquid fuel but also by means of the generated coal dust.
  • Staubdosier Anlagen 103 which is designed to supply multiple consumers from a metering device, in addition to different Consumers also of the hot gas generator 101 are supplied with coal dust.
  • the roller mill 1 itself and the lines for the dust to the dust filter 102 are located in an ATEX zone 20. For this reason, this area should be designed either pressure-resistant or pressure shock resistant.
  • two pressure relief devices 141 are provided by way of example.
  • the pressure relief devices 141 are designed such that they preferably relieve vertical upward.
  • the pressure relief devices 141 are designed such that they preferably relieve vertical upward.
  • the resulting forces can be better derived in the container structure and in the soil.
  • this offers the advantage that in the positioning of the grinding system 100 little attention must be paid to outlet jets in the Ex case, and thus greater freedom of positioning exist.
  • Fig. 9 a further embodiment of the grinding plant 100 according to the invention is shown, which is designed for self-inert operation.
  • the storage and supply of the raw coal or the broken raw coal to the roller mill 1 is realized in the same manner as already described in relation to Fig. 8 has been described.
  • the plant off Fig. 9 differs essentially to the plant Fig. 8 in that after the volumetric flow measurement 125 and the process fan 126, a chimney with flaps 128 is provided. In addition, a return gas line is provided in which a return gas flap 129 and a fresh air supply 130 are located.
  • the self-inert mode of operation of the grinding plant 100 differs from the air mode of operation Fig. 8 in that first an inert atmosphere will be built up within the mill and its associated inlets and outlets, which is self-sustaining in operation.
  • the zone from the roller mill 1 to the dust filter 102 is to be regarded as the Atex zone 21.
  • appropriate design pressure reliefs are provided in this hazardous area, as previously described in relation to the air operation.
  • the system can be designed, for example, pressure shock resistant for a pressure of 3.5 bar.
  • the task of coal can be started as described.
  • the moisture can be obtained partly or even completely (depending on the coal moisture) from the abandoned coal.
  • the oxygen content is continuously measured after the dust filter 102 and before the roller mill 1 and can be adjusted by additional water injection. This allows a self-inert operation of the system.
  • this system is also suitable for air operation with recirculation.
  • Fig. 10 an extension of the grinding plant 100 for inert operation is shown.
  • the system is suitable for operation even in external operation become.
  • an external flue gas supply 131 is provided in the gas recirculation branch of the mill circuit.
  • Inert flue gases which are produced, for example, during steam generation or asphaltene production, can be supplied via this feed.
  • the grinding plant 100 according to the invention should be operated with an oxygen content of not more than 10%.
  • O 2 and / or CO measuring devices can be provided at various locations, for example in front of the roller mill 1 and / or after the dust filter 102. It is decided on the basis of the determined oxygen content, whether the system can continue to operate safely. Thus, with an oxygen content of 11%, an alarm must be issued and the system switched off when exceeding the oxygen content of 12%.
  • the evaluation of the CO measurements is used to check whether develop at standstill of the plant flue gases, such as a fire or the like.
  • N 2 or CO 2 batteries or tanks by means of which when determining an excessively high oxygen content of the mill circuit can be flooded with inert gases, so that the oxygen content is lowered and thus one potential explosion is prevented.
  • the resulting ash does not bake or sinter.
  • a hot gas generator When operating a hot gas generator with gas or oil it is operated with a ⁇ of 1.2 to 1.3. In this case, the ⁇ value represents the ratio of air to fuel in comparison to a stoichiometric mixture. At the stated ⁇ value of 1.2 to 1.3, a residual oxygen content of about 2.5 in the flue gas. This is unproblematic for the operation of Wälzmahlstrom 100.
  • the burner When using carbon as a fuel, however, the burner must be operated at a ⁇ of 1.6 to 1.8.
  • a mill described herein is sized to provide a throughput of about 2 to 4 tons of coal dust per hour. This results in the use of hard coal with a calorific value of about 30MJ / kg of dust as a fuel for a thermal output of 34 MW with a production of 4t of dust per hour. Accordingly, when using lignite with a calorific value of approximately 20MJ / kg, dust is generated as fuel for a thermal output of approximately 22 MW.
  • roller mill according to the invention and the grinding system according to the invention are therefore easy and effective to transport and require only a very short time for commissioning.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Crushing And Grinding (AREA)

Claims (15)

  1. Broyeur à rouleaux transportable (1) pour fragmenter des matières solides, en particulier des combustibles solides, avec un sous-ensemble broyeur (2), qui présente
    - un boîtier de broyeur (3),
    - un bac de broyage (4),
    - au moins deux rouleaux de broyage (5) qui roulent sur le bac de broyage (4),
    - dans lequel le bac de broyage (4) et les rouleaux de broyage (5) au nombre d'au moins deux sont placés dans le boîtier de broyeur (3),
    - au moins deux unités à levier oscillant (6), un rouleau de broyage (5) étant monté sur chaque unité à levier oscillant (6),
    - un entraînement de bac de broyage (7),
    - une transmission (8) pour le bac de broyage (4), et
    - un boîtier de transmission (9),
    caractérisé en ce que
    - le sous-ensemble broyeur (2) est agencé pour le transport et le fonctionnement dans un conteneur,
    - en ce que les unités à levier oscillant (6) sont articulés chacun au boîtier de broyeur (3),
    - en ce que des étais (11) sont prévus, depuis des zones d'articulation (15) de l'unité à levier oscillant (6) vers le fond et/ou le châssis porteur (12) du conteneur, et
    - en ce qu'entre le fond et/ou le châssis porteur (12) du conteneur et les étais (11) sont placés des amortisseurs (13) de vibrations.
  2. Broyeur à rouleaux transportable selon la revendication 1,
    caractérisé en ce que
    les étais (11) sont reliés dans leur partie supérieure au boîtier de broyeur (3) et en ce que les étais (11) sont reliés dans leur partie inférieure au boîtier de transmission (9).
  3. Broyeur à rouleaux transportable selon la revendication 1 ou 2,
    caractérisé en ce que
    le boîtier de transmission (9) est placé au moins partiellement sous le bac de broyage (3).
  4. Broyeur à rouleaux transportable selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le sous-ensemble broyeur (2) est porté par les étais (11) et
    en ce qu'un intervalle est prévu entre le boîtier de transmission (9) et le fond et/ou le châssis porteur (12) du conteneur.
  5. Broyeur à rouleaux transportable selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le boîtier de broyeur (3) est réalisé moulé.
  6. Broyeur à rouleaux transportable selon l'une des revendications 1 à 5,
    caractérisé en ce que
    deux rouleaux de broyage (5) en vis-à-vis forment une paire de rouleaux, et en ce que la paire de rouleaux est couplées mutuellement hydrauliquement, dans lequel le couplage hydraulique est réalisé au moyen d'au moins un vérin de suspension hydraulique (21), qui est articulé à chaque fois sur des bras (25) qui sont fixés chacun sur un arbre (16) des unités à levier oscillant (6).
  7. Broyeur à rouleaux transportable selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    au moins un vérin de suspension hydraulique (22) pour le pivotement d'un rouleau de broyage (5) peut être placé directement ou indirectement entre un bras (25), qui est fixé à un arbre (16) d'une unité à levier oscillant (6), et un étai (11).
  8. Broyeur à rouleaux transportable selon la revendication 5 et 7,
    caractérisé en ce que
    le vérin de suspension hydraulique (22) pour le pivotement d'un rouleau de broyage (5) et le vérin de suspension hydraulique (21) pour le couplage de la paire de rouleaux sont de construction identique.
  9. Broyeur à rouleaux transportable selon l'une des revendications 1 à 8,
    caractérisé en ce que
    dans un autre conteneur est prévu un classificateur (31) pour le broyeur à rouleaux (1),
    en ce que le classificateur (31) peut être rapporté sur le boîtier de broyeur (3) et
    est réalisé fixable sur celui-ci, et
    en ce que le classificateur (31) se trouve en service en majeure partie dans l'autre conteneur.
  10. Broyeur à rouleaux transportable selon la revendication 9,
    caractérisé en ce que
    le classificateur (31) peut être placé, pour une position de transport dans l'autre conteneur, dans une position surélevée, et
    en ce que le classificateur (31) peut être immobilisé dans l'autre conteneur au moyen de griffes de transport (41), qui peuvent être appliquées entre le classificateur (31) et le fond du conteneur.
  11. Installation de broyage transportable pour fragmenter des matières solides, en particulier des combustibles solides,
    caractérisée par
    un broyeur à rouleaux transportable (1) selon la revendication 9 ou 10,
    - avec un générateur de gaz chaud (101),
    - avec un filtre à poussières (102),
    - avec un dispositif (103) de dosage de poussières,
    - avec des dispositifs (104) d'alimentation en matière solide,
    - avec des dispositifs (105) de transport de matière solide, et
    - avec des dispositifs (106) de traitement de matière solide.
  12. Installation de broyage transportable selon la revendication 11,
    caractérisée en ce que
    le filtre à poussières (102) et le dispositif (103) de dosage de poussières sont placés pour le transport et le fonctionnement dans un ou plusieurs conteneurs, et
    en ce qu'au moins une grande partie des dispositifs (104) d'alimentation en matière solide, des dispositifs (105) de transport de matière solide et des dispositifs (106) de traitement de matière solide est placée pour le fonctionnement dans un ou plusieurs conteneurs.
  13. Installation de broyage transportable selon la revendication 11 ou 12,
    caractérisée en ce que
    le conteneur est réalisé en conteneur ISO de 20 et/ou 40 pieds d'une hauteur standard, ou comme conteneur High Cube.
  14. Installation de broyage transportable selon l'une des revendications 11 à 13,
    caractérisée en ce que
    les conteneur présentent des ouvertures pour faire passer des dispositifs (105) de transport de matière solide, des conduites de transport de produit broyé, des conduites de gaz de traitement et/ou des parties de l'installation de broyage.
  15. Installation de broyage transportable selon l'une des revendications 11 à 14,
    caractérisée en ce que
    - en service, le sous-ensemble broyeur (2) du broyeur à rouleaux transportable (1) et le générateur de gaz chaud (101) sont placés dans un premier conteneur de 40 pieds,
    - en ce qu'en service, des parties du classificateur (31) et des équipements électriques sont placés dans un deuxième conteneur de 40 pieds,
    - en ce qu'un silo à matière première (111) est conformé en premier conteneur High Cube de 20 pieds,
    - en ce qu'en service, un briseur (114) de matériau brut et un dispositif (105) de transport de matière solide sont placés dans un premier conteneur de 20 pieds,
    - en ce qu'en service, le filtre à poussières (102) est placé dans un deuxième conteneur High Cube de 20 pieds, et
    - en ce qu'en service, au moins des parties du dispositif (103) de dosage de poussières sont placées dans un deuxième conteneur de 20 pieds.
EP10793147.9A 2010-11-22 2010-11-22 Broyeur à rouleaux transportable et installation de broyage transportable Not-in-force EP2445638B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10793147T PL2445638T3 (pl) 2010-11-22 2010-11-22 Transportowalny młyn krążnikowy i transportowalna instalacja młyna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/007070 WO2011160665A1 (fr) 2010-11-22 2010-11-22 Broyeur à rouleaux transportable et installation de broyage transportable

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EP2445638A1 EP2445638A1 (fr) 2012-05-02
EP2445638B1 true EP2445638B1 (fr) 2013-06-05

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US (1) US20130082129A1 (fr)
EP (1) EP2445638B1 (fr)
CN (1) CN103260763B (fr)
CA (1) CA2792784A1 (fr)
DK (1) DK2445638T3 (fr)
EA (1) EA021592B1 (fr)
ES (1) ES2426681T3 (fr)
PL (1) PL2445638T3 (fr)
PT (1) PT2445638E (fr)
WO (1) WO2011160665A1 (fr)

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CN103071566A (zh) * 2013-01-14 2013-05-01 莱歇研磨机械制造(上海)有限公司 一种辊式磨机磨辊安装外壳的磨辊封头结构
CN106151782B (zh) * 2015-04-05 2019-07-05 南京凯盛国际工程有限公司 辊式破碎机整体移动用升降式行走轮装置
CN105478199B (zh) * 2016-01-08 2017-09-26 河南黎明重工科技股份有限公司 具有隔振结构的悬辊磨粉机
CN105750021A (zh) * 2016-03-03 2016-07-13 天津市帝标建材有限公司 一种水泥生产用立磨机
DE102017120043B3 (de) 2017-08-31 2018-12-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Anlage und Verfahren zur Herstellung von beleimten Pflanzenpartikeln
US20200189069A1 (en) * 2018-12-14 2020-06-18 Midwest Hardfacing Llc Grinding roll wheel with tungsten carbide
JP7423204B2 (ja) * 2019-06-28 2024-01-29 三菱重工業株式会社 粉砕装置及びボイラシステム並びに粉砕装置の運転方法
CN111530586B (zh) * 2020-05-11 2021-03-05 赵国丽 一种医疗护理用药剂研磨装置
CN112387392A (zh) * 2020-10-27 2021-02-23 宿州市超王面业有限责任公司 一种面粉生产加工用精细研磨装置及其研磨方法
CN112588346B (zh) * 2020-11-27 2021-11-26 浙江中医药大学 一种医学用高效的药物研磨装置

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DE3134601C2 (de) 1981-09-01 1985-10-31 Loesche GmbH, 4000 Düsseldorf Walzen-Schüsselmühle
AT370344B (de) * 1981-09-17 1983-03-25 Voest Alpine Ag Verfahren und vorrichtung zum trocknen und mahlen von mineralischem rohmaterial
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RU2234981C2 (ru) * 2001-12-05 2004-08-27 Открытое акционерное общество "Механобр-Техника" Конусная вибродробилка
DE102005040519B4 (de) * 2005-08-26 2009-12-31 Loesche Gmbh Verfahren und Vorrichtung zur Vermahlung von heißem und feuchtem Rohmaterial

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Publication number Publication date
DK2445638T3 (da) 2013-09-02
EA201201195A1 (ru) 2013-04-30
PL2445638T3 (pl) 2013-10-31
EP2445638A1 (fr) 2012-05-02
PT2445638E (pt) 2013-09-09
CN103260763A (zh) 2013-08-21
CN103260763B (zh) 2015-05-20
CA2792784A1 (fr) 2011-12-29
WO2011160665A1 (fr) 2011-12-29
US20130082129A1 (en) 2013-04-04
ES2426681T3 (es) 2013-10-24
EA021592B1 (ru) 2015-07-30

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