HK1110623B - Process and device for producing horizontally tamped coal cakes - Google Patents

Description

Device and method for producing a horizontally compacted coal cake

Technical Field

The invention relates to a device and a method for the horizontal production of pressed coal cakes for coking the coal cakes in a furnace chamber, wherein stationary pressing tools are used which operate horizontally and with a very limited stroke length.

Background

Devices and methods for compacting coal briquettes have been known for a long time from the prior art, and DE 557178 and DE 3145344 are listed here, for example. In the prior art, the tamped coal cake is produced so that it grows vertically upwards to full height.

DE 19807484 describes a tamping method. For this purpose, the tamping bar is raised above a loose bulk coal by means of a linear motor and can be dropped onto the bulk coal. A similar process is also described in DE 3533071 or DE 3910214. The tamping device must therefore be designed such that the rod is suitable for tamping a still very flat tamped coal cake exactly as a completely filled press chamber, with the same strength and uniformity as an almost finished tamped cake.

The tamping cake and thus the pressing chamber in which it is produced are generally 4m to 7m high in industrial coking plants, which has the disadvantage that a corresponding additional space above the pressing chamber must be provided for the tamping rod. It is also necessary to provide a filling device above the compaction chamber and to place the entire coal bulk at a level above the compaction chamber before it can be filled into the compaction chamber.

It is also known in the prior art that the tamping rod, and primarily the foot of the tamping rod, hinders the entry of bulk coal. For this purpose, DE 3145344 proposes that the foot of the tamping rod be designed such that it should be reversible, wherein the disadvantage is that the highly loaded foot of the tamping rod is provided with a movable element. In addition, the older document describes a height of 4m to 6m for the tamp cake.

In order to produce low, i.e. flat, tamped coal cakes, as is usually used in so-called "non-recovery coke ovens", DE 19803455 proposes tamping the cakes in known existing press moulds and forming the press moulds as part of a turning device, so that the press cakes can be set horizontally after production. The device is technically very complex.

US 3,912,091 discloses an apparatus in which a flat-laid tamp cake is made. During the filling process, the coal is pressed flat vertically from above in the cavity and is simultaneously compacted in the cavity. The operation of expensive conveyors and compacting devices in hot furnace chambers is technically particularly demanding, since the costly water cooling is necessary for the conveyor. In particular, vibrations through the compacting device are considered dangerous, since damage to the wall may be caused thereby. It is also disadvantageous that the pressing tool must be guided in a movable manner, so that it can be moved over the tamping cake.

DE 19545736 also discloses a flat-laid device for pressing coal briquettes, in which the bulk coal is filled outside the furnace into a so-called compaction box and subsequently compacted. The dimensions of the finished briquette are preferably 0.6m high, 3-5m wide and 10-20m long in DE 19545736. The means for compacting the flat coal cake are not described in this document.

Disclosure of Invention

The object of the present invention is therefore to eliminate the disadvantages of the prior art and to provide a device and a method for compacting coal which operate more economically in a compact design and have the same or better compaction characteristics than known tamping devices and tamping methods.

The invention solves this object by providing a composition comprising (A) a polymer) The coal material makes the compact coal cake used in the coking oven, use a hydraulic pressure to press the apparatus, the pressing apparatus includes a hydraulic pressure plunger at least, a pressing pattern, one is put into and pressed the removable cake supporting plate on the bottom of the pattern and a charging chute that is set up above the pressing pattern, characterized by that: the compacting mould is formed by a vehicle or slide comprising walls, a floor and a wall, above which a chute is arranged transversely to the direction of movement, and a hydraulic cylinder which is stationary and which pushes a cylinder head member in a horizontal direction, during propulsion, presses coal material coming from the chute against the wall transversely to and passing under the chute by means of the cylinder head member andthe flat press cake is pressed through the underside thereof, wherein the vehicle is braked by a force counter to the advancing direction of the hydraulic cylinder, and the press cake directly adjoining the charging chute and the cylinder head piece are oriented parallel to the charging chute.

In an advantageous embodiment, the cylinder head is formed by a vertical pressure plate and a horizontal closing plate, wherein the cylinder head does not retract the outlet of the charging chute in the rest position, which forms the first end position, while the closing plate of the cylinder head retracts the outlet of the charging chute in an advancing manner and completely closes the outlet of the charging chute in the maximum stroke, i.e., the second end position.

In a further advantageous embodiment of the device according to the invention, the cylinder head is divided transversely to the advancing direction into at least two partial parts.

A variant of the device according to the invention is likewise advantageous in which the press cake cover covers the press mold only partially in the direction of advancement of the coal cake, is adjustable in height and can be raised, in particular for removing the coal cake. In this case, it is advantageous if the press cake cover or its suspension device is designed in such a way that the bearing pressure on the coal cake can be varied.

In a further preferred embodiment, the press cake plate is segmented in the advancing direction of the hydraulic cylinder, so that the bearing pressure of the segments can be varied independently of one another.

An advantageous variant of the device provides that the braking force of the compression mold, which is formed as a vehicle or slide, is implemented such that it can be varied. It is thus possible to react to different coal qualities of the charge via a pressing force that can be varied horizontally and vertically and to ensure an optimized shaping of the coal cake.

It is desirable that the hydraulic cylinders, the charging chute and the press cake cover plate are arranged parallel to the narrow sides of the vehicle, so that the dimensions of the components of these devices can be made as small as possible.

The invention also includes an apparatus that employs a flat bath as a compression mold for the apparatus. A displaceable wall is arranged in the trough, a charging chute is arranged above and parallel to the wall, a hydraulic cylinder which is stationary and pushes a cylinder head in a horizontal direction presses the coal material coming from the charging chute against the wall by means of the cylinder head transversely to and through below the charging chute and presses it through below a flat cake cover when advancing, wherein the wall is braked by a force counter to the advancing direction of the hydraulic cylinder and the cake cover directly adjoining the charging chute and the cylinder head and the charging chute are oriented parallel.

In an improved embodiment of the device equipped with a tank, the cylinder head is formed by a vertical pressure plate and a horizontal closing plate, wherein the cylinder head does not retract the outlet of the charging chute in the rest position formed as the first end position, while the closing plate of the cylinder head retracts the outlet of the charging chute in an advancing manner and completely closes the outlet of the charging chute in the maximum stroke, i.e. the second end position.

In an advantageous variant of the device according to the invention, the braking force of the retaining wall can be varied.

Advantageously, the cylinder head is divided transversely to the advancing direction into at least two partial parts.

In a further advantageous embodiment of the device according to the invention, the cake cover only partially covers the tank in the direction of advancement of the coal cake. In addition, the device can be modified in such a way that the cake cover can be adjusted in height and can be raised, in particular for removing the coal cake, and an additional improvement consists in that the bearing pressure of the cake cover can be varied.

In a further embodiment, the press cake plate is segmented in the advancing direction of the hydraulic cylinder and the bearing pressures of the segments can be varied independently of one another. It is also generally advantageous to arrange the hydraulic cylinders, the charging chute and the press cake cover plate such that they are arranged parallel to the narrow sides of the tank, in order to keep the dimensions as small as possible.

The invention also relates to a method for producing briquettes, in which a hydraulic pressing device as described above is provided, wherein the pressing die can be formed as a slide, a vehicle or a trough, and wherein: the coal cake to be produced is formed by a plurality of horizontal pressing processes and the loose coal material is pressed to a high degree of compaction (Dichte) of up to 60%. The cylinder head or the pressure plate at one end of the cylinder head thereby experiences a stroke that remains substantially the same at all times, since the pressed coal cake is pushed back in the press mold or the press mold according to the size of the pressed coal cake to which it is formed.

Drawings

Fig. 1 shows an exemplary embodiment of the device according to the invention as a sketch, wherein the pressing device is designed as a vehicle; and in fig. 2 the device is constructed as a vehicle.

The list of reference numbers is as follows:

1 vehicle 11 closure Panel

2 bottom 12 pressed cake cover

3 Hold in palm cake board 13 suppression coal cake

4 baffle wall 3013 a pre-pressed coal

5 direction of wheel 14 braking force

6 charging chute 15 position line

7 scattered coal 16 tank

8 Hydraulic cylinder 17 wall (Movable)

9 direction of pressing force of fixing device 3518

10 pressing plate

Detailed Description

Fig. 1a) shows a compression mold in the form of a vehicle 1, which is formed essentially of a base 2, a cake support plate 3 which is placed on top and can be removed, a retaining wall 4 which is arranged at the front in the direction of movement, and rollers 5 which are arranged below the base 2. Above the vehicle 1, a charging chute 6 is provided, into which the bulk coal 7 is filled and which falls down onto the vehicle 1 or the cake support plate 3. Fig. 1a) also shows a hydraulic cylinder 8 which is fastened to a fastening device 9 and which extends parallel to the chute 6 and bridges the vehicle 1 located therebelow, so that the vehicle is displaced under the fastening bridge 9 through the hydraulic cylinder 8.

The cylinder head of the hydraulic cylinder 8 shown in fig. 1a) essentially comprises a vertical pressure plate 10 and a horizontally oriented closing plate 11 connected to the pressure plate. In fig. 1a) the press cake lid 12 is depicted in a raised position, so that the blocking wall 4 can be moved underneath the press cake lid, which is arranged above the vehicle 1 and extends horizontally relative to the cake support plate 3. It can be seen that the coal fines 7 fall down onto the cake support plate 3 in the region between the pressure plate 10 of the hydraulic cylinder 8, which is described here in the reset position, the retaining wall 4 and below the charging chute 6.

In fig. 1b) the hydraulic cylinder 8 is partly extended so that the closing plate 11 partly closes the outlet of the charging chute 6. In addition, a region 13a immediately before the platen is visible, which is indicated by simple hatching, and in which pre-compacted bulk coal is enclosed. A pressed coal cake 13 which has been produced by a plurality of pressing processes is formed between the retaining wall 4, the pressed cake cover 12 and the pressure plate 10 of the hydraulic cylinder 8. The direction of the pressing force pressing the wafer cover 12 is indicated by an arrow 17.

In order to apply a pressing force towards the retaining wall 4, the vehicle 1 must be braked. The direction of the braking force is indicated by the arrow 14, the particular braking device not being shown and being able to be designed in any way known to the skilled person. The vehicle 1 has been moved in fig. 1b) positively from an initial position described by a position line 15 indicated by a dashed line against the direction of the braking force and in the direction of propulsion of the hydraulic cylinder 8.

Fig. 1c) shows a completely finished pressed coal cake 13, in which the vehicle 1 likewise reaches the end position. The cake supporting plate 3 and the pressed coal cake 13 are ready to be removed.

Fig. 2 shows the device according to the invention, wherein the press form is designed as a trough 16 and the base 2 is essentially immobile. The retaining wall 4, which is not rigidly connected to the press mold, is braked analogously to the above-described device, so that the necessary pressure for producing the pressed coal cake 13 is reached. A pressed coal cake 13 is produced on the cake support plate 3 and is likewise formed between the retaining wall 4, the pressed cake cover 12 and the pressure plate 10 of the hydraulic cylinder 8. The direction of the pressing force pressing the wafer cover 12 is indicated by an arrow 17.

Claims (25)

1. Hydraulic press device for producing a compacted coal cake from loose coal material for use in a coke oven, comprising at least a hydraulic ram, a press mould, a removable cake support plate placed on the bottom of the press mould, a charging chute arranged above the press mould, characterized in that: the press mould is formed by a vehicle or slide comprising walls, a floor and a wall, above which a chute is arranged transversely to the direction of movement, a hydraulic cylinder which is stationary and pushes a cylinder head piece in the horizontal direction, with the aid of the cylinder head piece, presses coal material coming from the chute transversely to and passing under the chute against the wall and presses it while advancing, passing under a planar press cake cover, wherein the vehicle is braked with a force counter to the direction of advancement of the hydraulic cylinder and the press cake cover directly adjoining the chute and the cylinder head piece and chute are oriented parallel.

2. The apparatus of claim 1, wherein: the cylinder head part is formed by a vertical pressure plate and a horizontal closing plate, wherein the cylinder head part does not retract the outlet of the charging chute in a rest position forming a first end position, while the closing plate of the cylinder head part progressively retracts the outlet of the charging chute during the advancing process and completely closes the outlet of the charging chute in a maximum stroke, i.e. a second end position.

3. The apparatus of claim 1, wherein: the cylinder head is divided transversely to the advancing direction into at least two partial parts.

4. The apparatus of claim 2, wherein: the cylinder head is divided transversely to the advancing direction into at least two partial parts.

5. An apparatus according to any one of claims 1 to 4, characterized in that: the press cake cover only partially covers the press mold in the advancing direction of the coal cake.

6. An apparatus according to any one of claims 1 to 4, characterized in that: the pressed cake cover can be adjusted in height.

7. An apparatus according to claim 6, characterized in that: the pressed cake covers can be raised in order to remove the coal cake.

8. An apparatus according to any one of claims 1 to 4, characterized in that: the braking force of the vehicle can be changed.

9. An apparatus according to any one of claims 1 to 4, characterized in that: the supporting pressure of the pressed tortilla lid can be changed.

10. An apparatus according to claim 9, wherein: the press cake covers are segmented in the advancing direction of the hydraulic cylinder so that the supporting pressure of each segment can be changed independently of each other.

11. An apparatus according to any one of claims 1 to 4, characterized in that: the hydraulic cylinder, the charging chute and the pressed cake cover are arranged parallel to the narrow side of the vehicle.

12. Hydraulic press device for producing a compacted coal cake from loose coal material for use in a coke oven, comprising at least a hydraulic ram, a press mould, a removable cake support plate placed on the bottom of the press mould, a charging chute arranged above the press mould, characterized in that: the press mould is formed by a flat trough and a movable baffle wall is arranged in the trough, a charging trough is arranged above the trough and parallel to the baffle wall, a hydraulic cylinder which is stationary and pushes a cylinder head piece in the horizontal direction presses coal material from the charging trough against the baffle wall by means of the cylinder head piece transversely to and through under the charging trough and presses the coal material through the baffle wall and through under a plane type press cake cover when advancing, wherein the baffle wall is braked by a force opposite to the advancing direction of the hydraulic cylinder, and the press cake cover directly adjacent to the charging trough and the cylinder head piece and the charging trough are oriented in parallel.

13. An apparatus according to claim 12, wherein: the cylinder head part is formed by a vertical pressure plate and a horizontal closing plate, wherein the cylinder head part does not retract the outlet of the charging chute in a rest position formed as a first end position, while the closing plate of the cylinder head part retracts the outlet of the charging chute in an advancing manner during the advancing process and completely closes the outlet of the charging chute in a maximum stroke, i.e. a second end position.

14. An apparatus according to claim 12, wherein: the cylinder head is divided transversely to the advancing direction into at least two partial parts.

15. An apparatus according to claim 13, wherein: the cylinder head is divided transversely to the advancing direction into at least two partial parts.

16. An apparatus according to any one of claims 12 to 15, wherein: the pressed cake cover only partially covers the tank in the direction of advancement of the coal cake.

17. An apparatus according to any one of claims 12 to 15, wherein: the pressed cake cover can be adjusted in height.

18. An apparatus according to claim 17, wherein: the pressed cake covers can be raised in order to remove the coal cake.

19. An apparatus according to any one of claims 12 to 15, wherein: the braking force of the retaining wall can be varied.

20. An apparatus according to any one of claims 12 to 15, wherein: the supporting pressure of the pressed tortilla lid can be changed.

21. An apparatus according to claim 20, wherein: the press cake covers are segmented in the advancing direction of the hydraulic cylinder and the supporting pressure of each segment can be changed independently of each other.

22. An apparatus according to any one of claims 12 to 15, wherein: the hydraulic cylinder, the charging chute and the pressed cake cover are arranged parallel to the narrow side of the tank.

23. Method for producing briquettes using a device according to one of claims 1 to 11, characterized in that: the coal cake is made by multiple horizontal pressing processes and the loose coal material is pressed to a higher compaction of up to 60%.

24. Method for producing briquettes using a device according to one of claims 12 to 22, characterized in that: the coal cake is made by multiple horizontal pressing processes and the loose coal material is pressed to a higher compaction of up to 60%.

25. Method for producing briquettes using the device according to claim 23 or 24, characterized in that: the horizontal stroke of the hydraulic cylinder has a fixed and always remains the same length.